CN215151388U

CN215151388U - Die assembly buffering die

Info

Publication number: CN215151388U
Application number: CN202121544744.1U
Authority: CN
Inventors: 何智敏; 陈军华; 何建铭
Original assignee: Foshan Nanhai Huada Takagi Mold Co ltd
Current assignee: Foshan Nanhai Huada Takagi Mold Co ltd
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2021-12-14
Anticipated expiration: 2031-07-07

Abstract

The application discloses a die assembly buffering die which comprises a movable die plate, square iron, a bottom plate, a return spring, an ejector plate, a surface plate, a return rod and a buffering piece, wherein the movable die plate is fixed on the bottom plate; an ejector plate and a surface needle plate are sequentially arranged above the bottom plate, square irons are arranged on two sides of the bottom plate, the bottom surfaces of the square irons are fixedly connected with the bottom plate, and movable templates are arranged on the top surfaces of the square irons; the return rod is arranged on the surface needle plate and penetrates through the movable template, and the return spring is sleeved on the return rod; the ejector pin plate is provided with a buffer groove, the buffer piece is arranged in the buffer groove and connected with the bottom end of the return rod, and the height of the buffer piece is higher than that of the buffer groove; when the mould is opened, the top end surface of the return rod is higher than the parting surface of the movable mould plate under the action of the buffer piece, so that the technical problem that the application of mould closing force is not scientific enough, the quality and the service life of the mould are reduced in repeated mould opening and closing actions of the mould, the quality of an injection-molded product is influenced, and the mould is easy to damage, so that the production cost and the maintenance cost are increased is solved.

Description

Die assembly buffering die

Technical Field

The application relates to the technical field of dies and related equipment thereof, in particular to a die for die assembly buffering.

Background

After the mold is opened, the product is pushed away from the mold core by the pushing mechanism, the mold is closed after the product is reset, and the next injection molding action is continued.

In the prior art, in order to ensure the quality of a product, the requirement on the precision of the fit tolerance of the tail end of a return rod and a parting surface is high, and red lead is required to be used for verification during die matching; when the die is closed, under the action of a closing force, the speed of pushing the ejector plate and driving the ejector pins, the straight ejector and the inclined ejector to reset cannot be reduced, but can be increased, under the condition, some abnormal conditions may occur at the moment of final complete die closing, such as instant resetting of the straight ejector and the inclined ejector, which causes unsatisfactory matching degree, and if the instant acting force is not damaged, the materials of the straight ejector, the inclined ejector and the B plate which are used are required to have good impact property and wear resistance; or after the needle plate returns, the straight ejector rod and the inclined ejector rod cannot return completely due to incomplete length adjustment of the straight ejector rod and the inclined ejector rod or due to rebound of impact force, and when the height of the bulge exceeds the thickness of an injection-molded product, the cavity part is damaged; the straight top or the inclined top has a part belonging to a parting surface, and even if the height of the bulge is a little more than that of the parting surface, the parting surface at the cavity side can be damaged because the straight top or the inclined top cannot be completely restored. The application of the mold closing force is not scientific enough, when the mold is repeatedly opened and closed on an injection molding machine, the quality and the service life of the mold are reduced, the quality of an injection molded product is influenced, and the mold is easy to damage, so that the production and maintenance cost is increased.

SUMMERY OF THE UTILITY MODEL

The application provides a mould of compound die buffering for solve the not enough science of compound die power application, the mould is in the mould action that opens and shuts repeatedly, and the quality and the life of mould descend, influence the product quality that moulds plastics, and the mould is fragile, thereby has increased production and cost of maintenance's technical problem.

The application provides a die assembly buffering die which comprises a movable die plate, square iron, a bottom plate, a return spring, an ejector plate, a surface plate, a return rod and a buffering piece; an ejector plate and a surface needle plate are sequentially arranged above the bottom plate, the square iron is arranged on two sides of the bottom plate, the bottom surface of the square iron is fixedly connected with the bottom plate, and the movable template is arranged on the top surface of the square iron; the return rod is arranged on the surface needle plate and penetrates through the movable template, and the return spring is sleeved on the return rod; the ejector pin plate is provided with a buffer groove, the buffer piece is arranged in the buffer groove and connected with the bottom end of the return rod, and the height of the buffer piece is higher than that of the buffer groove; and in the die opening state, the top end surface of the return rod is higher than the parting surface of the movable die plate under the action of the buffer piece.

In the application, a movable template of a mold is supported by square irons arranged on two sides of a bottom plate, the action of pushing out a product after injection molding is finished is mainly finished through an ejector plate, a return rod and a return spring, the product is reset under the spring force action of the return spring after being pushed out, the mold is in a mold opening state after the action of pushing out the product is finished, under the action of a buffer piece arranged at the bottom end of the return rod, the top end surface of the return rod is higher than the parting surface of the movable template, the buffer piece is arranged in a buffer groove, the buffer groove is formed in the ejector plate, the installation is facilitated while the strength of the ejector plate is not influenced, and when the mold is closed, due to the buffer action of the buffer piece, the top end surface of the return rod and the parting surface have a height difference, the return rod is enabled to be reset in a relaxing mode when the mold is closed finally, and all structures are driven to reset in a relaxing mode; at the last moment of die assembly, the die assembly speed is reduced, the impact force of die assembly on each part of the die is reduced, the die assembly force is scientifically applied, each part of the die is effectively protected, the service life of each part of the die is prolonged, the possibility that the die cannot be completely reset or reset rebounds under the action of a return spring is avoided, and the technical problems that the die assembly force is not scientifically applied, the quality and the service life of the die are reduced in repeated die opening and closing actions, the quality of an injection molded product is influenced, the die is easy to damage, and the production and maintenance cost is increased are solved.

Optionally, the height difference range of the top end surface of the return rod higher than the parting surface of the movable die plate is 1mm to 4 mm. The proper height difference is used, so that the normal use of the die after die assembly is ensured, and the quality of an injection molding product is not influenced.

Optionally, the buffer is a mechanical spring or a rubber spring. The mechanical spring and the rubber spring can both realize the buffer effect after die assembly, and are easy to implement, and the cost is saved.

Optionally, the contact surface of the thimble plate with the thimble plate is provided with a limit step, and the bottom end of the return rod is embedded with the limit step.

Optionally, a cushion block is arranged below the ejector plate, and the cushion block is located between the ejector plate and the bottom plate.

Drawings

Fig. 1 is a schematic structural diagram of a mold opening state of a mold with mold closing buffering provided by the present invention;

fig. 2 is an enlarged schematic structural diagram of a position a in the mold opening state provided by the present invention;

fig. 3 is an enlarged schematic structural diagram of a position B in the mold opening state provided by the present invention;

fig. 4 is a schematic structural diagram of a mold closing state of a mold with a buffering mold for mold closing according to the present invention;

fig. 5 is an enlarged schematic structural diagram of a position C in a mold closing state according to the present invention.

Detailed Description

The embodiment of the application provides a mould of compound die buffering for solve the not enough science of compound die power application, the mould is in the mould action of opening and shutting repeatedly, and the quality and the life of mould descend, influence the product quality of moulding plastics, and the mould is fragile, thereby has increased production and cost of maintenance's technical problem.

In order to make the objects, features and advantages of the present invention more apparent and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the embodiments described below are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1 to 5, an embodiment of the present application provides a mold for mold closing buffering, including a movable mold plate 1, a square iron 2, a bottom plate 3, a return spring 4, an ejector plate 5, a face plate 6, a return rod 7 and a buffer 8, the ejector plate 5 and the face plate 6 are sequentially disposed above the bottom plate 1, the square iron 2 is disposed on two sides of the bottom plate 3, a bottom surface of the square iron 2 is fixedly connected with the bottom plate 3, the movable mold plate 1 is mounted on a top surface of the square iron 2, the return rod 7 is disposed on the face plate 6 and penetrates through the movable mold plate 1, the return spring 4 is sleeved on the return rod 7, the ejector plate 5 is provided with a buffer groove 51, the buffer 8 is disposed in the buffer 51 and connected with a bottom end of the return rod 7, the buffer 8 is higher than the height of the buffer groove, and in a mold opening state, a top end surface of the return rod 7 is higher than a parting surface of the movable mold plate 1 under an effect of the return rod 8.

After injection molding is finished in the mold, opening the mold, and pushing out a product through a pushing-out mechanism; when the push-out is carried out, the ejector pin plate 5 and the dough pin plate 6 move towards the direction of the movable template 1, and then the return spring 4 is compressed, when the return is carried out, the spring force of the return spring 4 plays a role, the ejector pin plate 5 and the dough pin plate 6 return to the original position, the mold is in a mold opening state, the buffer piece 8 arranged in the buffer groove 51 is connected with the bottom end of the return rod 7, and under the action of the buffer piece 8, the top end surface of the return rod 7 is higher than the parting surface of the movable template 1; in order to ensure the quality of injection molding finished products and the normal operation of injection molding when other molds are in a mold opening state under normal conditions, the top end surface of the return rod needs to be flush with the parting surface of the movable mold plate, the requirement on the height tolerance between the top end surface and the parting surface is higher, and the mold matching is usually carried out by using red lead for verification; the buffer groove 51 is arranged on the ejector plate 5, so that the installation is convenient while the strength of the ejector plate is not influenced; when the die is closed, at the last moment of closing the die, when the die is closed to the top end surface of the return rod 7 higher than the parting surface, the buffer member 8 has elasticity, and under the buffer action force of the buffer member 8, the buffer return of the return rod 7 is ensured, and each part of the pushing mechanism of the die is driven to be reset slowly until the parts are reset completely; after the compound die, return stroke pole 7 is through suppressing bolster 8 and down reset, bolster 8 is compressed, the top face of return stroke pole 7 returns to the die joint parallel and level, guarantee the normal operating of the work of moulding plastics, because the cushioning effect that bolster 8 brought, make the last in the twinkling of an eye of compound die, great compound die force obtains the buffering, slow down the impact force to each part of mould, the life of each part has been prolonged, and the compound die force that obtains the buffering makes the noise decline of compound die, the possibility that can not completely playback or playback rebound under the reset spring 4 effect has also been avoided.

In this embodiment, the top end face of the return rod 7 is higher than the parting surface of the movable mold plate 1, the height difference range is 1mm to 4mm, the normal use of the mold after mold closing is ensured through a proper height difference, the mold closing state is realized, the return rod 7 needs to be flush with the parting surface of the movable mold plate 1 under the pressing of the mold closing parting surface, the buffer member 8 is compressed at the moment, the height difference range is 1mm to 4mm, and the normal operation of mold closing action is ensured. In this embodiment, the buffer member 8 may be preferably a mechanical spring or a rubber spring, and of course, any buffer member that can be realized within the required spring force range may be selected, and the mechanical spring or the rubber spring has a simple structure, is easy to implement, and requires less cost.

On the thimble board 6 was located to return stroke pole 7, the contact surface with thimble board 5 on the thimble board 6 was equipped with spacing step 61, and spacing step 61 is inlayed and is located to the bottom of return stroke pole 7, and the bottom of spacing return stroke pole 7 of spacing step 61 is mutually supported, guarantees the normal clear of release action, and spacing step 61 has restricted the distance that return stroke pole 7 moved up, and on the other hand makes the bolster 8 of locating return stroke pole 7 bottom exert cushioning effect better. A cushion block 52 is arranged below the ejector plate 5, the cushion block 52 is positioned between the ejector plate 5 and the bottom plate 3, the cushion block 52 can reduce the contact area between the ejector plate 5 and the bottom plate 3, and the phenomenon that the mold closing is not in place due to the fact that garbage and dust fall and accumulate on the ejector plate 5 and the bottom plate 3 is avoided.

In the embodiment, at the last moment of die assembly of the die, the die assembly speed is influenced by the top end face of the return rod 7 higher than the parting surface and is reduced, the die assembly force is buffered under the action of the buffer piece 8, the die assembly force is scientifically applied, the die assembly speed is reduced, the impact force brought to each part is reduced, each part is effectively protected, the whole service life of the die is prolonged, the implementation mode is simple and easy to implement, and the technical problems that the application of the die assembly force is not scientific enough, the quality and the service life of the die are reduced in repeated die opening and closing actions of the die, the quality of an injection-molded product is influenced, and the die is easy to damage are solved, so that the production and maintenance cost is increased.

In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, unless otherwise explicitly stated or limited. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.

The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A die for die assembly buffering is characterized by comprising a movable die plate, square iron, a bottom plate, a return spring, an ejector plate, a surface plate, a return rod and a buffering piece;

an ejector plate and a surface needle plate are sequentially arranged above the bottom plate, the square iron is arranged on two sides of the bottom plate, the bottom surface of the square iron is fixedly connected with the bottom plate, and the movable template is arranged on the top surface of the square iron; the return rod is arranged on the surface needle plate and penetrates through the movable template, and the return spring is sleeved on the return rod; the ejector pin plate is provided with a buffer groove, the buffer piece is arranged in the buffer groove and connected with the bottom end of the return rod, and the height of the buffer piece is higher than that of the buffer groove; and in the die opening state, the top end surface of the return rod is higher than the parting surface of the movable die plate under the action of the buffer piece.

2. The clamping buffering mold as claimed in claim 1, wherein the difference of the height of the top end surface of the return rod above the parting surface of the movable mold plate is 1mm to 4 mm.

3. The matched-die buffered mold of claim 1, wherein the buffer is a mechanical spring or a rubber spring.

4. The mold for mold closing buffering as claimed in claim 1, wherein the contact surface of the surface needle plate and the ejector plate is provided with a limit step, and the bottom end of the return rod is embedded in the limit step.

5. The clamp cushion mold of claim 1, wherein a spacer is provided below said ejector plate, said spacer being located between said ejector plate and said base plate.