CN113815201A - Buckle has demolding structure of two different angles - Google Patents
Buckle has demolding structure of two different angles Download PDFInfo
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- CN113815201A CN113815201A CN202110897338.1A CN202110897338A CN113815201A CN 113815201 A CN113815201 A CN 113815201A CN 202110897338 A CN202110897338 A CN 202110897338A CN 113815201 A CN113815201 A CN 113815201A
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- Prior art keywords
- ejector
- rod
- block
- plate
- sliding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
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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
- B29C45/40—Removing or ejecting moulded articles
- B29C45/44—Removing or ejecting moulded articles for undercut articles
- B29C2045/445—Removing or ejecting moulded articles for undercut articles using the movable undercut forming element for ejection of the moulded article
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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 mold stripping structure with two different angles for a buckle, which comprises: the device comprises an upper die, an upper die fixing plate, a lower die fixing plate, a first ejector plate, a second ejector plate, an ejector rod and a moving block. A first sliding block is arranged on the first ejector plate in a sliding manner, and an ejector block is arranged in the first ejector plate; a second sliding block is arranged on the second ejector plate in a sliding mode, a drag hook is arranged on the lower portion of the second ejector plate, and the drag hook hooks the ejector block when the ejector block is ejected out; the lower part of the lower die is provided with a limiting groove, the moving block is arranged in the limiting groove in a sliding manner, and the jacking block retracts when the moving block reaches the top of the limiting groove; the lower end of the first inclined rod is fixed on the first sliding block, and the upper end of the first inclined rod is fixed with a first inclined top; the lower end of the second diagonal rod is fixed on the second sliding block, and the upper end of the second diagonal rod is fixed with a second inclined top. The invention effectively combines the two inclined ejectors through a mechanical structure, so that the two inclined ejectors can not interfere with each other. The ejector rod of the injection molding machine only needs to be ejected once in the whole demolding process, so that the production efficiency is ensured, and unnecessary equipment loss is avoided.
Description
Technical Field
The invention relates to a mold stripping structure, in particular to a mold stripping structure with two different angles on a buckle.
Background
The invention is particularly applicable to an injection moulded product, the schematic diagram of which is shown in figure 1. The top of product has the inclined plane, then participates in the buckle that constitutes here profile and need the motion of below to the declivity just can the demolding, and product substructure needs and panel beating match simultaneously, then participates in the buckle that constitutes here profile and needs horizontal motion just can the demolding, so, need move in two directions when the buckle demolding of two profiles. Generally, utilize oblique top to make buckle demolding during design demolding structure, oblique top and buckle an organic whole are connected, under the straight line thrust effect of injection molding machine ejector rod, make oblique ejection demolding, but the buckle of this product need move in two directions when the demolding, if design two oblique tops simultaneously demolding, then must lead to the motion to interfere (as shown in figure 2), influence demolding effect, if the demolding with two oblique tops is cut apart into twice motion completely, then need injection molding machine ejector rod to divide twice ejecting two oblique tops, so can reduce production efficiency, increase the equipment loss.
Disclosure of Invention
The invention provides a mold stripping structure with two different angles for a buckle, which effectively combines two inclined lifters (the inclined lifters and the buckle are integrally connected) through a mechanical structure, so that the mold stripping of the two inclined lifters can be successively finished under the condition that an ejector rod of an injection molding machine is ejected once, the two inclined lifters do not interfere with each other during mold stripping, the production efficiency is ensured, and unnecessary equipment loss is avoided.
The technical scheme of the invention is as follows:
a release structure for a buckle having two different angles, comprising:
the upper die, the upper die fixing plate, the lower die and the lower die fixing plate;
further comprising:
the first ejector plate is positioned above the lower die fixing plate, and a first sliding block is arranged on the first ejector plate in a sliding manner; an ejector block is arranged in the first ejector plate; the first ejector plate is provided with an ejector rod hole, and the ejector rod hole penetrates through the first ejector plate and the lower die fixing plate;
the second ejector pin plate is positioned above the first ejector pin plate, and a second sliding block is arranged on the second ejector pin plate in a sliding manner; the lower part of the second ejector plate is provided with a draw hook, and the draw hook hooks the ejector block when the ejector block is ejected out;
the ejector rod is arranged at the lower part of the lower die and can retract the ejector block;
the lower part of the lower die is provided with a limiting groove, the moving block is arranged in the limiting groove in a sliding manner, and the jacking block retracts when the moving block reaches the top of the limiting groove;
the lower end of the first inclined rod is fixed on the first sliding block, a first inclined top is fixed at the upper end of the first inclined rod, a first limiting hole is formed in the upper part of the lower die, and the first inclined rod is matched in the first limiting hole;
the lower end of the second diagonal rod is fixed on the second sliding block, a second oblique top is fixed at the upper end of the second diagonal rod and located above the first oblique top, a second limiting hole is formed in the moving block, and the second diagonal rod is matched in the second limiting hole.
The buckle of this scheme has the demolding structure of two different angles, goes up the mould and the major part die surface of lower mould formation product, and last fixed plate and lower mould fixed plate are used for fixed mould and lower mould respectively, and mould and last fixed plate put aside after the product shaping, the die sinking promptly. When the ejector rod is not acted on the ejector block, the ejector block is ejected out, the retractor hooks the ejector block, and the second ejector plate drives the first ejector plate to move upwards together. In the stage, the first diagonal rod and the first diagonal top as well as the second diagonal rod and the second diagonal top move upwards, and the motion of the second diagonal rod is not restricted by the second limiting hole because the motion block can slide along the limiting groove, so that the second diagonal rod and the second diagonal top only move upwards in the stage; because the lower die is fixed, the first limiting hole restricts the movement of the first inclined rod, so that the first inclined rod moves horizontally (in the sliding direction of the first sliding block) while moving upwards, and the first inclined ejector die is ejected. When the motion block reaches the top of the limiting groove, the ejector rod enables the ejector block to retract, the second ejector plate is separated from the first ejector plate, the motion of the first ejector plate stops, the first inclined ejection die is completed, the second ejector plate continues to move upwards under the action of the ejector rod of the injection molding machine, the motion block is clamped in the limiting groove and cannot move at the moment, the motion of the second inclined rod is constrained by the second limiting hole, the second inclined rod moves downwards (the sliding direction of the second sliding block) when the second inclined rod moves upwards, and the second inclined ejection die is enabled to move till the second inclined ejection die is completed.
The clamp of the scheme is provided with the mold stripping structures with two different angles, the first inclined ejector and the second inclined ejector move in two stages through the first ejector plate, the second ejector plate, the ejector rod, the ejector block and the drag hook, the first inclined ejector and the second inclined ejector move upwards in the first stage, and the moving block can slide along the limiting groove in the first stage, so that the second inclined ejector only moves upwards; and in the second stage, the second ejector plate is separated from the first ejector plate, the movement of the first ejector plate is stopped, the second ejector plate continues to move upwards, the moving block is clamped in the limiting groove and cannot move, the second limiting hole is restricted to the movement of the second inclined rod, and the second inclined ejector is ejected out of the mold in the stage. In the first stage, only the first inclined ejection die is ejected, the second inclined ejection die is static relative to the product, in the second stage, the first inclined ejection die is ejected, the second inclined ejection die is ejected, and the two inclined ejection dies are ejected step by step without mutual interference. The ejector rod of the injection molding machine only needs to be ejected once in the whole demolding process, so that the production efficiency is ensured, and unnecessary equipment loss is avoided.
The buckle of this scheme has the demolding structure of two different angles, and the product all keeps vertical direction motion under thimble (not drawn in the picture) supports in whole motion process, makes first oblique top and second push up to one side and can accomplish the demolding.
Preferably, the error of parallelism between the sliding plane of the first sliding block and the product contact surface of the first inclined top is 0.01-0.03 mm. In order to ensure the mold stripping quality and avoid the product from being damaged by pulling when the first inclined ejector is used for mold stripping, the parallelism error between the sliding plane of the first sliding block and the product contact surface of the first inclined ejector must be strictly controlled, the sliding plane of the first sliding block and the product contact surface of the first inclined ejector are horizontal planes, the processing difficulty is small, and the parallelism precision of the sliding plane of the first sliding block and the product contact surface of the first inclined ejector can be properly higher.
Preferably, the error of parallelism between the sliding plane of the second sliding block and the product contact surface of the second inclined top is 0.02-0.03 mm. In order to ensure the mold stripping quality and avoid the product from being damaged by pulling when the second inclined ejector is used for mold stripping, the parallelism error between the sliding plane of the second sliding block and the product contact surface of the second inclined ejector must be strictly controlled, the sliding plane of the second sliding block and the product contact surface of the second inclined ejector are inclined surfaces, the processing difficulty is high, and the parallelism precision of the sliding plane of the second sliding block and the product contact surface of the second inclined ejector can be properly lower.
Preferably, the included angle between the axis of the first inclined rod and the horizontal plane is 70-80 degrees, and the included angle between the axis of the second inclined rod and the horizontal plane is 70-80 degrees. The larger the included angle between the axis of the first diagonal rod and the horizontal plane is, the smaller the resistance borne by the first diagonal rod during movement is, the lower the abrasion is, the smaller the included angle between the axis of the first diagonal rod and the horizontal plane is, the smaller the vertical displacement of the ejector rod of the injection molding machine is, the shorter the production period is, and the less the space is occupied, so that the properly large value of the included angle between the axis of the first diagonal rod and the horizontal plane can be obtained according to the requirement, and the same principle as the above is adopted for the included angle between the axis of the second diagonal rod and the horizontal plane.
Preferably, four corners of the horizontal section of the motion block are all round corners. Thus, the assembly of the motion block is facilitated, and the resistance borne by the motion block due to machining errors during motion is reduced.
Preferably, the lower end of the ejector rod is provided with an inclined surface for extruding the ejector block. The inclined plane has simple structure, and is convenient for processing and controlling the movement of the jacking block.
Preferably, the included angle between the inclined plane at the lower end of the ejector rod and the horizontal plane is 50-70 degrees. The larger the included angle between the inclined surface at the lower end of the ejector rod and the horizontal plane is, the smaller the resistance force borne by the ejector rod when the ejector rod extrudes the ejector block is, the lower the abrasion is, the smaller the included angle between the inclined surface at the lower end of the ejector rod and the horizontal plane is, the smaller the vertical displacement required for separating the first ejector pin plate from the second ejector pin plate is, so that the included angle between the inclined surface at the lower end of the ejector rod and the horizontal plane needs to be properly taken as required, and the first inclined ejector die is completed when the first ejector pin plate and the second ejector pin plate are separated.
Preferably, the contact surface of the first inclined top and the second inclined top is an inclined surface. So can reduce the resistance that receives when the first oblique ejection goes out the mould, be favorable to first oblique ejection mould. It should be understood that in order to allow the first lifter to be smoothly ejected, the inclination direction of the contact surface of the first lifter and the second lifter is determined, which would otherwise cause the first lifter to interfere with the second lifter when the first lifter is ejected.
The invention has the beneficial effects that: the two pitched roofs are effectively combined through a mechanical structure, so that the demolding of the two pitched roofs is divided into two stages to be carried out, during the first stage, only the first pitched roof is used for demolding, the second pitched roof is static relative to a product, during the second stage, the demolding of the first pitched roof is completed, the demolding of the second pitched roof is completed, and the demolding of the two pitched roofs is completed step by step without mutual interference. The ejector rod of the injection molding machine only needs to be ejected once in the whole demolding process, so that the production efficiency is ensured, and unnecessary equipment loss is avoided.
Drawings
Fig. 1 is a schematic view of a product according to the present invention.
FIG. 2 is a schematic view of the direction of movement of the product clasp as it is being ejected.
Fig. 3 is a left side view of the present invention.
Fig. 4 is a cross-sectional view taken along the plane a-a in fig. 3.
Fig. 5 is a cross-sectional view taken along the plane B-B in fig. 3.
Fig. 6 is a schematic view showing the completion of the first angle ejection die.
Fig. 7 is a schematic view showing completion of the second angle ejection die.
In the figure:
an upper die 1;
an upper die fixing plate 2;
a lower die 3;
a lower die fixing plate 4;
a first ejector plate 5;
a first slider 6;
a top block 7;
a top stick hole 8;
a second ejector plate 9;
a second slider 10;
a draw hook 11;
a top rod 12;
a motion block 13;
a limiting groove 14;
a first diagonal 15;
a first pitched roof 16;
a first stopper hole 17;
a second diagonal 18;
a second pitched roof 19;
a second limiting hole 20.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly explained and illustrated below with reference to the accompanying drawings, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.
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 by referring to the drawings are exemplary only for explaining the present scheme, and are not construed as limiting the scheme of the present invention.
These and other aspects of embodiments of the invention will be apparent with reference to the following description and attached drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the ways in which the principles of the embodiments of the invention may be practiced, but it is understood that the scope of the embodiments of the invention is not limited thereby. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "several" means one or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections, either mechanical or electrical, or communicating with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The first embodiment is as follows: as shown in fig. 3 to 7, a mold stripping structure of a buckle with two different angles includes:
the device comprises an upper die 1, an upper die fixing plate 2, a lower die 3 and a lower die fixing plate 4;
further comprising:
the first ejector plate 5 is positioned above the lower die fixing plate 4, and a first sliding block 6 is arranged on the first ejector plate 5 in a sliding manner; an ejector block 7 is arranged in the first ejector plate 5; the first ejector plate 5 is provided with an ejector rod hole 8, and the ejector rod hole 8 penetrates through the first ejector plate 5 and the lower die fixing plate 4;
the second ejector pin plate 9 is positioned above the first ejector pin plate 5, and a second sliding block 10 is arranged on the second ejector pin plate 9 in a sliding manner; the lower part of the second ejector plate 9 is provided with a draw hook 11, and the draw hook 11 hooks the ejector block 7 when the ejector block 7 is ejected;
the ejector rod 12, the ejector rod 12 is set up in the inferior part of the lower die 3, the ejector rod 12 can make the ejector block 7 retract;
a limiting groove 14 is formed in the lower portion of the moving block 13 and the lower portion of the lower die 3, the moving block 13 is arranged in the limiting groove 14 in a sliding mode, and the jacking block 7 retracts when the moving block 13 reaches the top of the limiting groove 14;
the lower end of the first inclined rod 15 is fixed on the first sliding block 6, a first inclined top 16 is fixed at the upper end of the first inclined rod 15, a first limiting hole 17 is formed in the upper part of the lower die 3, and the first inclined rod 15 is matched in the first limiting hole 17;
the lower end of the second diagonal rod 18 is fixed on the second sliding block 10, the upper end of the second diagonal rod 18 is fixed with a second slanted ejecting part 19, the second slanted ejecting part 19 is positioned above the first slanted ejecting part 16, a second limiting hole 20 is arranged in the moving block 13, and the second diagonal rod 18 is matched in the second limiting hole 20.
The buckle of this embodiment has the demolding structure of two different angles, goes up mould 1 and the most die surface of 3 formation products of lower mould, goes up mould fixed plate 2 and lower mould fixed plate 4 and is used for fixed mould 1 and lower mould 3 respectively, goes up mould 1 and last mould fixed plate 2 after the product shaping and moves away, opens the mould promptly. When the injection molding machine is demoulded, the ejector rod of the injection molding machine penetrates through the ejector rod hole 8 and jacks up the second ejector plate 9 from bottom to top, when the ejector rod 12 does not act on the ejector block 7, the ejector block 7 is ejected out, the drag hook 11 hooks the ejector block 7, and the second ejector plate 9 drives the first ejector plate 5 to move upwards together. In the stage, the first inclined rod 15 and the first inclined top 16, the second inclined rod 18 and the second inclined top 19 all move upwards, and the motion of the second inclined rod 18 is not restricted by the second limiting hole 20 because the motion block 13 can slide along the limiting groove 14, so that the second inclined rod 18 and the second inclined top 19 only move upwards; because the lower die 3 is fixed, the first limit hole 17 restricts the movement of the first diagonal rod 15, so that the first diagonal rod moves horizontally (in the sliding direction of the first sliding block 6) while moving upwards, and the first diagonal ejector 16 is ejected out of the die. When the motion block 13 reaches the top of the limit groove 14, the ejector rod 12 retracts the ejector block 7, the second ejector plate 9 is separated from the first ejector plate 5, the motion of the first ejector plate 5 stops, the first inclined ejector 16 finishes mold stripping, the second ejector plate 9 continues to move upwards under the action of an ejector rod of the injection molding machine, the motion block 13 is clamped in the limit groove 14 and cannot move, the second limit hole 20 restrains the motion of the second inclined rod 18, the second inclined ejector 18 moves obliquely downwards (the sliding direction of the second sliding block 10) while moving upwards, and the second inclined ejector 19 finishes mold stripping until the second inclined ejector 19 finishes mold stripping.
The buckle of the embodiment has two mold stripping structures with different angles, the movement of a first inclined ejector 16 and a second inclined ejector 19 is divided into two stages by a first ejector plate 5, a second ejector plate 9, an ejector rod 12, an ejector block 7 and a draw hook 11, the first inclined ejector 16 and the second inclined ejector 19 both move upwards in the first stage, and a movement block 13 in the first stage can slide along a limit groove 14, so that the second inclined ejector 19 only moves upwards, and the first inclined ejector 16 is subjected to mold stripping in the stage because the movement of a first inclined rod 15 is restricted by a first limit hole 17; in the second stage, the second ejector plate 9 is separated from the first ejector plate 5, the movement of the first ejector plate 5 stops, the second ejector plate 9 continues to move upwards, the moving block 13 is clamped in the limiting groove 14 and cannot move, the second limiting hole 20 restricts the movement of the second inclined rod 18, and the second inclined ejector 19 is ejected from the die in the stage. In the first stage, only the first lifter 16 is demoulded, the second lifter 19 is static relative to the product, in the second stage, the first lifter 16 is demoulded, the second lifter 19 is demoulded, and the two lifters are demoulded step by step without mutual interference. The ejector rod of the injection molding machine only needs to be ejected once in the whole demolding process, so that the production efficiency is ensured, and unnecessary equipment loss is avoided.
The buckle of the embodiment has two mold stripping structures with different angles, and the product keeps moving in the vertical direction under the support of the ejector pin (not shown in the figure) in the whole moving process, so that the first inclined top 16 and the second inclined top 19 can complete mold stripping. As shown in fig. 4 and 5, in order to avoid interference at the time of assembly and demolding, cavities are opened at necessary positions in the first ejector plate 5, the moving block 13, and the lower mold 3.
Furthermore, the error of the parallelism between the sliding plane of the first sliding block 6 and the product contact surface of the first inclined top 16 is 0.01 mm-0.03 mm. In order to ensure the mold stripping quality and avoid the product from being damaged by pulling when the first lifter 16 is subjected to mold stripping, the parallelism error between the sliding plane of the first sliding block 6 and the product contact surface of the first lifter 16 must be strictly controlled, the sliding plane of the first sliding block 6 and the product contact surface of the first lifter 16 are horizontal planes, the processing difficulty is small, and the parallelism precision of the sliding plane and the product contact surface of the first lifter 16 can be properly higher.
Furthermore, the error of the parallelism between the sliding plane of the second sliding block 10 and the product contact surface of the second inclined top 19 is 0.02 mm-0.03 mm. In order to ensure the mold stripping quality and avoid the product from being damaged by pulling when the second lifter 19 is subjected to mold stripping, the parallelism error between the sliding plane of the second slider 10 and the product contact surface of the second lifter 19 must be strictly controlled, the sliding plane of the second slider 10 and the product contact surface of the second lifter 19 are inclined surfaces, the processing difficulty is high, and the parallelism precision of the two surfaces can be properly reduced.
Further, the included angle between the axis of the first inclined rod 15 and the horizontal plane is 70-80 degrees, and the included angle between the axis of the second inclined rod 18 and the horizontal plane is 70-80 degrees. The larger the included angle between the axis of the first diagonal rod 15 and the horizontal plane is, the smaller the resistance force borne by the first diagonal rod 15 during the movement is, the lower the abrasion is, the smaller the included angle between the axis of the first diagonal rod 15 and the horizontal plane is, the smaller the vertical displacement of the ejector rod of the injection molding machine is, the shorter the production period is, and the less the space is occupied, so that the included angle between the axis of the first diagonal rod 15 and the horizontal plane should be a properly large value as required, and the included angle between the axis of the second diagonal rod 18 and the horizontal plane is the same as the above.
Furthermore, four corners of the horizontal section of the moving block 13 are all rounded corners. Thus, the assembly of the moving block 13 is facilitated, and the resistance borne by the moving block 13 during the movement caused by machining errors is reduced.
Further, the lower end of the ejector rod 12 is provided with an inclined surface for extruding the ejector block 7. The inclined plane has simple structure, and is convenient for processing and controlling the movement of the jacking block 7. In other embodiments, a circular arc surface or a rolling pulley can be arranged at the lower end of the top rod 12.
Furthermore, the included angle between the inclined plane at the lower end of the ejector rod 12 and the horizontal plane is 50-70 degrees. The larger the included angle between the inclined plane at the lower end of the ejector rod 12 and the horizontal plane is, the smaller the resistance borne by the ejector rod 12 when the ejector block 7 is extruded, the lower the abrasion is, the smaller the included angle between the inclined plane at the lower end of the ejector rod 12 and the horizontal plane is, the smaller the vertical displacement required for separating the first ejector pin plate 5 from the second ejector pin plate 9 is, so that the included angle between the inclined plane at the lower end of the ejector rod 12 and the horizontal plane should be properly taken as required, but the mold stripping of the first lifter 16 is completed when the first ejector pin plate 5 and the second ejector pin plate 9 are separated.
Further, the contact surface of the first slanted ejecting part 16 and the second slanted ejecting part 19 is a slanted surface. Therefore, the resistance borne by the first lifter 16 during mold stripping can be reduced, and the mold stripping of the first lifter 16 is facilitated. It should be understood that in order to facilitate the mold ejection of the first lifter 16, the contact surface between the first lifter 16 and the second lifter 19 is inclined in a certain direction, which would otherwise cause the first lifter 16 to interfere with the second lifter 19 during the mold ejection, as shown in fig. 4 and 6.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (8)
1. A release structure for a buckle having two different angles, comprising:
the device comprises an upper die (1), an upper die fixing plate (2), a lower die (3) and a lower die fixing plate (4);
it is characterized by also comprising:
the first ejector pin plate (5), the first ejector pin plate (5) is located above the lower die fixing plate (4), and a first sliding block (6) is arranged on the first ejector pin plate (5) in a sliding mode; an ejector block (7) is arranged in the first ejector plate (5); the first ejector pin plate (5) is provided with an ejector pin hole (8), and the ejector pin hole (8) penetrates through the first ejector pin plate (5) and the lower die fixing plate (4);
the second ejector pin plate (9), the second ejector pin plate (9) is located above the first ejector pin plate (5), and a second sliding block (10) is arranged on the second ejector pin plate (9) in a sliding mode; a draw hook (11) is arranged at the lower part of the second ejector plate (9), and the draw hook (11) hooks the ejector block (7) when the ejector block (7) is ejected;
the ejector rod (12), the ejector rod (12) is set up in the inferior part of the lower die (3), the ejector rod (12) can make the kicking block (7) retract;
the lower part of the lower die (3) is provided with a limiting groove (14), the moving block (13) is arranged in the limiting groove (14) in a sliding manner, and the jacking block (7) retracts when the moving block (13) reaches the top of the limiting groove (14);
the lower end of the first inclined rod (15) is fixed on the first sliding block (6), a first inclined top (16) is fixed at the upper end of the first inclined rod (15), a first limiting hole (17) is formed in the upper part of the lower die (3), and the first inclined rod (15) is matched in the first limiting hole (17);
the lower end of the second diagonal rod (18) is fixed on the second sliding block (10), the upper end of the second diagonal rod (18) is fixed with a second diagonal top (19), the second diagonal top (19) is positioned above the first diagonal top (16), a second limiting hole (20) is formed in the motion block (13), and the second diagonal rod (18) is matched in the second limiting hole (20).
2. The demolding structure for the snap fastener with two different angles as claimed in claim 1, wherein the error of parallelism between the sliding plane of the first sliding block (6) and the product contact surface of the first inclined top (16) is 0.01 mm-0.03 mm.
3. The demolding structure for the snap fastener with two different angles as claimed in claim 1 or 2, wherein the error of parallelism between the sliding plane of the second sliding block (10) and the product contact surface of the second inclined top (19) is 0.02 mm-0.03 mm.
4. The demolding structure with the buckle having two different angles according to claim 1, wherein an included angle between an axis of the first inclined rod (15) and a horizontal plane is 70-80 degrees, and an included angle between an axis of the second inclined rod (18) and the horizontal plane is 70-80 degrees.
5. A draw structure for a clasp with two different angles according to claim 1, wherein the four corners of the horizontal section of the moving block (13) are rounded.
6. A die-stripping structure for a snap fastener with two different angles as claimed in claim 1, characterized in that the lower end of the ejector rod (12) is provided with a bevel for pressing the ejector block (7).
7. The clip has two different angle stripping structures according to claim 6, wherein the angle between the inclined plane of the lower end of the ejector rod (12) and the horizontal plane is 50-70 °.
8. A release mechanism for a snap fastener having two different angles, as claimed in claim 1, wherein the contact surfaces of said first (16) and second (19) domes are beveled.
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| CN113815201B (en) | 2023-07-18 |
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