CN216729479U

CN216729479U - Die-casting mold core structure of cylinder body

Info

Publication number: CN216729479U
Application number: CN202123053656.4U
Authority: CN
Inventors: 蒲兵; 周军; 刘祥云; 胡九城; 金海涛
Original assignee: Ningbo Sibei Technology Co ltd
Current assignee: Ningbo Sibei Technology Co ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-06-14
Anticipated expiration: 2031-12-07

Abstract

The utility model relates to a die-casting mold core structure of cylinder body, loose core including last mold core, lower mold core and preceding, last mold core and lower mold core be and stack and arrange, form the die cavity between the two, last mold core and lower mold core between the front and back install respectively and loose core before loosing core and the back is loosed core, last mold core and lower mold core between about the part do not install the left side and loose core and the right side is loosed core, preceding loose core insert one of die cavity serve be provided with towards the sky protrusion of keeping away that extends backward, keep away the end middle part of empty convex end and be provided with the indent, the back loose core be close to die cavity one end and be provided with the bolt pole that extends forward, the end of bolt pole matches with the convex indent of keeping away, and the marginal laminating of the end lower part curved surface of bolt pole and indent, the one end that the left side is close to the die cavity be provided with the mold insert of loosing core. The utility model has the characteristics of reduction in production cost, make things convenient for the cylinder body drawing of patterns, improve cylinder body quality etc.

Description

Die-casting mold core structure of cylinder body

Technical Field

The utility model relates to a motorcycle cylinder body technical field especially relates to a die-casting mold core structure of cylinder body.

Background

The conventional motorcycle cylinder body is not only required to ensure the molding of an inner cavity in the machining process, but also required to ensure that the whole weight of the cylinder body does not exceed the design requirement, in the conventional design, in order to reduce the weight of the cylinder body, the volume of the cylinder body and the edge of a heat dissipation blade are reduced, and meanwhile, the cylinder body is cut and thinned at an unnecessary position.

Disclosure of Invention

The utility model aims to solve the technical problem that a die-casting mold core structure of cylinder body is provided, under the condition that does not change the cylinder body performance, subtract heavy operation to the cylinder body, have reduction in production cost, make things convenient for the cylinder body drawing of patterns, improve characteristics such as cylinder body quality.

The utility model provides a technical scheme that its technical problem adopted is: the die-casting mold core structure comprises an upper mold core, a lower mold core and a front loose core, wherein the upper mold core and the lower mold core are arranged in a stacked mode, a mold cavity is formed between the upper mold core and the lower mold core, the front loose core and the rear loose core are respectively arranged at the front part and the rear part between the upper mold core and the lower mold core, the left loose core and the right loose core are respectively arranged at the left part and the right part between the upper mold core and the lower mold core, a backward extending clearance protrusion is arranged at one end, inserted into the mold cavity, of the front loose core, an inner concave is arranged in the middle of the end of the clearance protrusion, a forward extending bolt rod is arranged at one end, close to the mold cavity, of the rear loose core, the end of the bolt rod is matched with the inner concave, the curved surface of the lower part of the end of the bolt rod is attached to the edge of the inner concave, a hole position insert is arranged at one end, close to the mold cavity, a clearance insert attached to the rear side of the hole position insert is arranged at the rear side of the hole position, the left loose core is provided with an auxiliary runner extending into the die cavity at the upper side of one end close to the die cavity, the auxiliary runner is positioned on the upper die core, and a circle of extending edge is arranged at the edge of one end extending into the die cavity.

As a supplement to the technical scheme, the middle part of the lower end face of the upper die core is provided with an end part forming table, and the extending edge is flush with the end face of the end part forming table.

As a supplement to the technical scheme, a raised platform is arranged in the middle of the upper end face of the lower die core and close to the rear side of the clearance insert, and the front side of the raised platform is attached to the rear side of the clearance insert.

As a supplement to the technical scheme, the front end surface of the front core pulling is provided with a pouring gate installation groove.

As a supplement to the technical scheme, the front end of the lower end face of the upper mold core is provided with a main runner groove, the left side of the root of the main runner groove is provided with a left runner extending to the auxiliary runner, the rear end of the main runner groove is provided with a middle runner extending to the front end of the mold cavity, and the right side of the main runner groove is provided with a right runner extending to the upper part of the right core.

As a supplement to the technical scheme, a plurality of introduction grooves butted with a right runner are formed in the upper side of one end, close to the mold cavity, of the right loose core.

As a supplement to the technical scheme, a middle insert is arranged in the middle of the lower end surface of the upper mold core, a first butt pin butted with the end of the plug pin rod is arranged at the rear part of the lower end surface of the middle insert, and a second butt pin butted with the end of the hole position insert is arranged on the left side of the first butt pin.

Has the advantages that: the utility model relates to a die-casting mold core structure of cylinder body keeps away the sky protrusion through setting up for appearing on the cylinder body product rather than subtracting of corresponding to subtract heavy sky, make the whole weight of product descend, the structure at the inner chamber position of product does not have the change simultaneously, also do not influence arranging of cylinder body surface fan heat portion, so can not receive the change to cylinder body wholeness ability, make things convenient for cylinder body and frame to assemble, thereby alleviate the whole weight of frame, have reduction in production cost, make things convenient for the cylinder body drawing of patterns, improve characteristics such as cylinder body quality.

Drawings

Fig. 1 is a top view of the present invention;

fig. 2 is a front view of the present invention;

fig. 3 is a top view of the lower mold core of the present invention;

fig. 4 is a structural view of the hole site insert of the present invention;

fig. 5 is a bottom view of the upper mold core of the present invention;

fig. 6 is a structural view of the raised platform of the present invention;

fig. 7 is a structural view of the lead-in groove of the present invention.

The figure is as follows: 1. the mold comprises an upper mold core, 2, a lower mold core, 3, a front core pulling, 4, a left core pulling, 5, a rear core pulling, 6, a right core pulling, 7, a pouring gate installation groove, 8, a clearance protrusion, 9, a bolt rod, 10, a hole position insert, 11, a clearance insert, 12, an auxiliary runner, 13, an extending edge, 14, a main runner groove, 15, a left runner, 16, a middle runner, 17, a right runner, 18, a middle insert, 19, a first butt pin, 20, a second butt pin, 21, a protruding platform, 22, an introduction groove, 23 and an inner recess.

Detailed Description

The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.

The utility model relates to a die-casting mold core structure of cylinder body, as shown in fig. 1-4, including upper mold core 1, lower mold core 2 and preceding loose core 3, upper mold core 1 and lower mold core 2 be the stack arrangement, form the die cavity between the two, the front and back portion between upper mold core 1 and lower mold core 2 install preceding loose core 3 respectively and back loose core 5, the left and right portions between upper mold core 1 and lower mold core 2 install respectively and loose core 4 and right loose core 6 of left side, preceding loose core 3 insert the die cavity on one end be provided with the evacuation protrusion 8 that extends backward, the end middle part of evacuation protrusion 8 is provided with indent 23, back loose core 5 be close to die cavity one end and be provided with the bolt pole 9 that extends forward, the end of bolt pole 9 matches with the indent 23 of evacuation protrusion 8, and bolt pole 9 end lower part curved surface is laminated with the edge of indent 23, the one end of left loose core 4 be close to the die cavity is provided with mold insert 10, the rear side of the hole position insert 10 is provided with a clearance-avoiding insert 11 attached to the rear side of the hole position insert, the upper side of one end, close to the mold cavity, of the left loose core 4 is provided with an auxiliary runner 12 extending into the mold cavity, the auxiliary runner 12 is positioned on the upper mold core 1, and the edge of one end, extending into the mold cavity, of the auxiliary runner is provided with a circle of extending edge 13.

Through setting up the keep away empty protrusion 8 among this technical scheme for appearing on the cylinder body product rather than the weight that corresponds leaks empty, make the whole weight of product descend, the structure at the inner chamber position of product does not have the change simultaneously, does not also influence arranging of cylinder body surface heat of fan portion position, so can not receive the change to cylinder body wholeness ability, makes things convenient for cylinder body and frame to assemble, thereby alleviates the whole weight of frame.

Through setting up bolt pole 9 and indent 23 for form a face of blockking after both match, aluminium liquid need walk around both can down flow, make the heavy sky of losing of this portion leak and can be shaped, through setting up keep away empty mold insert 11, come to subtract the weight to the left rear portion of product, simultaneously because the left anterior structure of product becomes complicated after setting up keep away empty mold insert 11, the product lower part can't be filled fast to aluminium liquid, thereby influence the cylinder body quality, so set up supplementary runner 12 at this position and supply, through setting up the limit 13 of extending, make things convenient for supplementary runner 12 to separate with the product simultaneously.

As a supplement to the technical scheme, an end forming table is arranged in the middle of the lower end face of the upper die core 1, and the extending edge 13 is flush with the end face of the end forming table.

The edge 13 that prolongs among this technical scheme flushes with the terminal surface of tip forming table, can effectual imitative version aluminium liquid flow in die cavity, ensures aluminium liquid to form steady pressure in the die cavity simultaneously, prolongs edge 13 simultaneously and can make things convenient for to form obvious interface between auxiliary flow way 12 and the product, after the convenient drawing of patterns, the product breaks away from once only with the remaining of auxiliary flow way 12.

As shown in fig. 6, as a supplement to the present embodiment, a raised platform 21 is disposed at a position close to the rear side of the clearance insert 11 in the middle of the upper end surface of the lower mold core 2, and the front side of the raised platform 21 is attached to the rear side of the clearance insert 11.

According to the technical scheme, the raised platform 21 and the clearance insert 11 form a rear step bulge, so that a clearance indent is formed at the rear part of the product, and the weight of the product is integrally reduced.

As a supplement to the technical scheme, a sprue mounting groove 7 is arranged on the front end surface of the front core pulling 3.

The installation of the gate structure is facilitated by providing the gate installation groove 7.

As shown in fig. 5, as a supplement to the present technical solution, the front end of the lower end surface of the upper mold core 1 is provided with a main runner groove 14, the left side of the root of the main runner groove 14 is provided with a left runner 15 extending to the auxiliary runner 12, the rear end of the main runner groove 14 is provided with a middle runner 16 extending to the front end of the mold cavity, and the right side of the main runner groove 14 is provided with a right runner 17 extending to the upper portion of the right loose core 6.

According to the technical scheme, the main runner groove 14, the left runner 15, the middle runner 16 and the right runner 17 are arranged, so that the injection amount is greatly increased, the molten aluminum is quickly filled, the production efficiency of products is improved, and the structural quality of the products is ensured.

As shown in fig. 7, as a supplement to this solution, the upper side of one end of the right loose core 6 close to the mold cavity is provided with a plurality of lead-in grooves 22 butted with the right runner 17.

Through setting up and introducing groove 22, make things convenient for aluminium liquid to enter into the die cavity, introduce groove 22 simultaneously and can form the injection node, make things convenient for material handle and product separation.

As a supplement to the technical solution, a middle insert 18 is disposed in the middle of the lower end surface of the upper mold core 1, a first docking pin 19 that docks with the end of the plug pin 9 is disposed at the rear of the lower end surface of the middle insert 18, and a second docking pin 20 that docks with the end of the hole site insert 10 is disposed at the left side of the first docking pin 19.

The first docking pin 19 and the middle insert 18 dock to form a first bore of the cylinder, and the bore insert 10 and the second docking pin 20 form a second bore.

Examples

When the technical scheme is used for production, firstly, the upper mold core 1 and the lower mold core 2 are matched, meanwhile, the front core pulling 3, the left core pulling 4, the rear core pulling 5 and the right core pulling 6 are all required to be inserted between the upper mold core 1 and the lower mold core 2, so as to ensure the formation of a mold cavity, then aluminum liquid is injected into a main runner groove 14 on the upper mold core through a pouring gate structure, the aluminum liquid enters a left runner 15, a middle runner 16 and a right runner 17 through the main runner groove 14, the aluminum liquid in the left runner 15, the middle runner 16 and the right runner 17 is filled into the mold cavity, meanwhile, in order to ensure the weight reduction, air leakage and air avoidance, air avoidance and concave avoidance of a product are formed, the bolt rod 9 and the concave 23 are jointed to form a blocking block, so that the structure cannot be filled by the aluminum liquid, meanwhile, the front side of the raised platform 21 is jointed with the rear side of the air avoidance insert 11, the blocking effect on the aluminum liquid is also achieved, and after the mold cavity is completely filled, cooling is carried out, hot gas can be discharged along with the exhaust slag ladle during cooling, the shrinkage cavity is avoided appearing in the product, later on the mold core 1 is opened, and take out and loose core 3 before loosing core, left side 4, loose core 5 and right 6 of loosing core after, the overall structure and the inner chamber of product still have the vacancy and all do not have the change, but appear on the cylinder body and subtract heavy leak vacancy and keep away the empty indent, greatly reduced the weight of product, improve the cylinder body and motorcycle frame's adaptation scope, simplify the cylinder body equipment.

Meanwhile, a circle of extending edge 13 is arranged at the end of the auxiliary flow channel 12 in the technical scheme, and the extending edge 13 enables an obvious interface to be formed between the auxiliary flow channel 12 and a product, so that a residual material handle of the auxiliary flow channel 12 can be conveniently cut off.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms do not have special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The die-casting mold core structure of the cylinder body provided by the present application is introduced in detail, and the principle and the implementation of the present application are explained by applying specific examples, and the description of the above embodiments is only used to help understanding the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. The utility model provides a die-casting mold core structure of cylinder body, includes mold core (1), lower mold core (2) and preceding (3) of loosing core, last mold core (1) and lower mold core (2) be and stack and arrange, form the die cavity between the two, last mold core (1) and lower mold core (2) between around the portion install respectively before loose core (3) and loose core (5) after loose core, last mold core (1) and lower mold core (2) between about the portion install respectively that left side is loosed core (4) and right side is loosed core (6), its characterized in that: one end of the front loose core (3) inserted into the die cavity is provided with a clearance protrusion (8) extending backwards, the middle part of the tail end of the clearance protrusion (8) is provided with an inner recess (23), one end of the rear loose core (5) close to the mold cavity is provided with a bolt rod (9) extending forwards, the end of the bolt rod (9) is matched with the inner recess (23) of the clearance protrusion (8), and the curved surface at the lower part of the end of the bolt rod (9) is jointed with the edge of the inner recess (23), a hole position insert (10) is arranged at one end of the left loose core (4) close to the die cavity, a clearance insert (11) attached to the rear side of the hole site insert (10) is arranged at the rear side of the hole site insert, an auxiliary runner (12) extending into the die cavity is arranged at the upper side of one end of the left loose core (4) close to the die cavity, the auxiliary runner (12) is positioned on the upper mold core (1), and a circle of extending edge (13) is arranged at the edge of one end of the auxiliary runner extending into the mold cavity.

2. The die-casting die core structure of a cylinder block according to claim 1, characterized in that: an end part forming table is arranged in the middle of the lower end face of the upper mold core (1), and the extending edge (13) is flush with the end face of the end part forming table.

3. The die-casting die core structure of a cylinder block according to claim 1, characterized in that: a raised platform (21) is arranged in the middle of the upper end face of the lower mold core (2) and close to the rear side of the void-avoiding insert (11), and the front side of the raised platform (21) is attached to the rear side of the void-avoiding insert (11).

4. The die-casting die core structure of a cylinder block according to claim 1, characterized in that: the front end surface of the front loose core (3) is provided with a pouring gate installation groove (7).

5. The die-casting die core structure of a cylinder block according to claim 1, characterized in that: the lower terminal surface front end of going up mold core (1) be provided with main runner groove (14), the root left side of main runner groove (14) be provided with left side runner (15) that extend to auxiliary runner (12), the rear end of main runner groove (14) be provided with middle part runner (16) that extend to the die cavity front end, the right side of main runner groove (14) be provided with right side runner (17) that extend to right side (6) upper portion of loosing core.

6. The die-casting core structure of a cylinder block according to claim 5, characterized in that: and a plurality of lead-in grooves (22) butted with the right runner (17) are formed in the upper side of one end, close to the die cavity, of the right loose core (6).

7. The die-casting die core structure of a cylinder block according to claim 1, characterized in that: the middle part of the lower end face of the upper mold core (1) is provided with a middle insert (18), the rear part of the lower end face of the middle insert (18) is provided with a first butt pin (19) butted with the end part of the plug pin rod (9), and the left side of the first butt pin (19) is provided with a second butt pin (20) butted with the end part of the hole site insert (10).