CN214456186U

CN214456186U - Combined core for casting

Info

Publication number: CN214456186U
Application number: CN202023334500.9U
Authority: CN
Inventors: 吴志强; 曹承均
Original assignee: Guangdong Fuhua Casting Co ltd
Current assignee: Guangdong Fuhua Casting Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-10-22
Anticipated expiration: 2030-12-31

Abstract

A combined core for casting comprises at least two core units which are arranged in a stacked mode and a clamping assembly; clamping component includes the cushion, two at least lead screws, and the briquetting, the below of the core unit of bottommost is arranged in to the cushion, and the upper surface of cushion forms the holding surface that supports in the core unit below of bottommost, the lead screw extends along the direction of height, and lead screw bottom portion spiro union is on the cushion, the briquetting includes the hoist and mount crossbeam, and be located two at least sleeves on the hoist and mount crossbeam, the cover of sleeve one-to-one is established on the lead screw, sleeve bottom face forms one and presses the face that compresses tightly of locating the core unit top of topmost, the top portion of lead screw is worn out by telescopic top, and the spiro union of top portion of lead screw has the lock nut who locates sleeve top face. The utility model discloses a novel core of combination is when lower core, and usable hook is hung on the hoist and mount crossbeam, and a plurality of core units are in tightly clamped state, avoid lifting hook and core unit contact, ensure that the combination core has higher integrality.

Description

Combined core for casting

Technical Field

The utility model relates to a casting technical field, concretely relates to combination core is used in casting.

Background

The core is also called mud core, when casting, the core is placed in the casting cavity, and the iron casting is formed between the outer surface of the core and the inner wall of the casting cavity; for some iron castings with relatively simple structures, the iron castings can be machined and molded only by adopting a single core; when the comparatively complicated ironcasting of shaping structure, need be in the same place the polylith core combination usually, then put into the casting die cavity with the polylith core that makes up wholly, current way is placed in the casting die cavity after snatching the polylith core that makes up through the manipulator, when snatching through the manipulator, can cause the damage to the core usually, influences the quality of ironcasting.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a combination core is used in casting, when going down the core to the casting die cavity, can avoid causing the damage to the core to guarantee that the ironcasting has the quality of preferred.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a combined core for casting comprises at least two core units which are arranged in a stacked mode and a clamping assembly;

clamping component includes the cushion, two at least lead screws, and the briquetting, the below of the core unit of bottommost is arranged in to the cushion, and the upper surface of cushion forms the holding surface that supports in the core unit below of bottommost, the lead screw extends along the direction of height, and lead screw bottom portion spiro union is on the cushion, the briquetting includes the hoist and mount crossbeam, and be located two at least sleeves on the hoist and mount crossbeam, the cover of sleeve one-to-one is established on the lead screw, sleeve bottom face forms one and presses the face that compresses tightly of locating the core unit top of topmost, the top portion of lead screw is worn out by telescopic top, and the spiro union of top portion of lead screw has the lock nut who locates sleeve top face.

The cushion is platelike, and the upper surface at the cushion is provided with the bellied fixing base that makes progress, sets up the screw hole that supplies the lead screw to penetrate on the fixing base.

The lower surface of the bottommost core unit is provided with a concave position for accommodating the cushion block and the fixing seat, and after the cushion block and the fixing seat are arranged in the concave position, the lower surface of the cushion block is flush with the lower surface of the bottommost core unit.

A gap is formed between the hoisting beam and the topmost core unit.

The lower surface of the hoisting beam is a horizontal plane.

The side of hoist and mount crossbeam is provided with the protruding portion, and the lower surface of protruding portion and the lower surface parallel and level of hoist and mount crossbeam.

Each core unit is provided with a through hole for the screw to pass through. The beneficial effects of the utility model reside in that:

the utility model discloses a novel core of combination is when lower core, and usable hook is hung on the hoist and mount crossbeam, because a plurality of core units are in by the tight state of clamp, and it keeps relative quiescent condition when lower core, simultaneously, articulates the hoist and mount crossbeam through the lifting hook and accomplishes the action of lower core, avoids contacting with the core unit to can not cause the damage to the core unit, ensure that the combination core has higher integrality, improved the shaping precision of ironcasting.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view of the present invention;

fig. 3 is a schematic structural view of the clamping assembly of fig. 1.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments:

as shown in fig. 1, 2, and 3, for the combined core for casting of the present invention, it includes a plurality of core units and clamping assemblies, specifically, the combined core includes a core unit 11, a core unit 12, a core unit 13, a core unit 14, and a core unit 15, which are stacked and sequentially arranged from bottom to top, the clamping assemblies include a spacer 21, two screws 22, and a pressing block 23, wherein the spacer 21 is disposed below the bottommost core unit 11, and an upper surface of the spacer 21 is attached to a lower surface of the core unit 11 to form a supporting surface for supporting the core unit 11, an extending direction of the screws 22 is the same as a height direction, bottom end portions of the two screws 22 are respectively screwed to both ends of the spacer 21, the pressing block 23 includes a hoisting beam 232 and two sleeves 231, the two sleeves 231 are respectively fixed at both ends of the hoisting beam 232, an inner diameter of the sleeves 231 is slightly larger than an outer diameter of the screws 22, the two sleeves 231 are sleeved on the screw rods 22 in a one-to-one correspondence manner, the bottom end surfaces of the sleeves 231 are pressed on the upper surface of the topmost core unit 15 to form a pressing surface for pressing the core unit 15, the top end portions of the screw rods 22 penetrate out of the tops of the sleeves 231, locking nuts (not shown) are screwed on the portions, penetrating out of the sleeves 231, of the top end portions of the screw rods 22, after the locking nuts are screwed, the sleeves 231 can be pressed downwards, the pressing surfaces at the bottoms of the sleeves 231 press the core unit 15, meanwhile, the screw rods 22 are tightened upwards by screwing the locking nuts, the cushion blocks 21 are tightened upwards, the supporting surfaces on the cushion blocks 21 press the core unit 11, and therefore the core unit 11, the core unit 12, the core unit 13, the core unit 14 and the core unit 15 are clamped to form a whole.

When the combined core unit is used, a plurality of core units are stacked to form an assembly, the cushion block 21 is arranged below the assembly, the bottom end part of the screw rod 22 is fixed on the cushion block 21, the pressing block 23 is arranged above the assembly, the top end part of the screw rod 22 penetrates into the sleeve 231, the cushion block 21 and the pressing block 23 are used for clamping the core units by screwing the locking nut, the lifting hook is hung on the lifting cross beam 232 during core setting, the core units are kept in a relatively static state during core setting due to the fact that the core units are in the clamped state, meanwhile, the lifting cross beam 232 is hung for core setting through the lifting hook, contact with the core units is avoided, accordingly, damage to the core units is avoided, high integrity of the combined core is guaranteed, and forming accuracy of cast iron parts is improved; after the combined core is placed in a casting cavity, the locking nut is disassembled, then the screw rod 22 and the pressing block 23 are disassembled, the cushion block 21 is kept in the casting cavity, and after the iron casting is taken out of the box, the cushion block 21 is taken out, and a clamping assembly formed by the cushion block 21, the screw rod 22 and the pressing block 23 can be repeatedly used.

In a preferred embodiment, in order to enable the cushion block 21 to provide better support for the bottommost core unit 11, the cushion block 21 is configured to be a plate-shaped structure, meanwhile, in order to enable the screw rod 22 to be detachably fixed with the cushion block 21 through threaded fit, an upward protruding fixing seat 211 is arranged on the upper surface of the cushion block 21, a threaded hole 212 is formed in the fixing seat 211 for the screw rod 22 to penetrate through, by arranging the fixing seat 211, the part, matched with the screw rod 22, of the cushion block 21 is thickened, the threaded hole 212 is made to have a relatively long axial dimension, the screw rod 22 is fixed with the cushion block 21 through more screw threads, and meanwhile, the verticality of the screw rod 22 is ensured. In addition, the lower surface of the bottommost core unit 11 is provided with a concave position for accommodating the cushion block 21 and the upper fixing seat 211 of the cushion block 21, and after the cushion block 21 and the fixing seat 211 are placed in the concave position, the lower surface of the cushion block 21 is flush with the lower surface of the bottommost core unit 11, so that the cushion block 21 is prevented from influencing the molding of the iron casting after the combined core is placed in the casting cavity.

In another preferred embodiment, a gap is formed between the lifting beam 232 and the topmost core unit 15, and the sleeve 231 may be of sufficient height dimension to allow the gap to be penetrated by a hook, while avoiding the hook contacting the upper surface of the core unit 15 to damage the core unit 15. The lower surface of the hoisting beam 232 is a horizontal plane, so that the hoisting beam 232 can be well matched with a lifting hook, in addition, the side surface of the hoisting beam 232 is provided with the protruding part 233, the width of the part of the hoisting beam 232, which is provided with the protruding part 233, is larger, namely the part of the hoisting beam 232 is widened, the lower surface of the protruding part 233 is flush with the lower surface of the hoisting beam 232, the part of the hoisting beam 232 is widened through the protruding part 233, when the lifting hook is matched with the hoisting beam 232, the gravity center position of the combined core can be obtained through calculation, the intersection point of a vertical straight line passing through the gravity center and the lower surface of the hoisting beam 232 is the optimal hanging point, after the lifting hook is hung on the optimal hanging point, the combined core can be prevented from deflecting in the core unloading process, namely, the combined core is kept in a horizontal state all the time.

The utility model discloses in, all be provided with the through-hole that supplies lead screw 22 to pass on each core unit, after lead screw 22 passed a plurality of core units in proper order when the equipment, its bottom spiro union is on cushion 21, so, plays limiting displacement to a plurality of core units through lead screw 22, avoids it to produce horizontal relative displacement each other.

It should be noted here that the present invention includes at least two core units, the number of the core units is determined according to the complexity of the iron castings, and at least two lead screws 22 are included, for some core units with larger volume, a relatively larger number of lead screws 22 can be provided, and the number of the sleeves 231 provided on the pressing block 23 is determined according to the number of the lead screws.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still make modifications to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some technical features, and these modifications or substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A combined core for casting is characterized by comprising at least two core units which are arranged in a stacked mode and a clamping assembly;

2. The combined core for casting as claimed in claim 1, wherein the spacer has a plate shape, and a fixing seat protruded upwardly is provided on an upper surface of the spacer, and a screw hole for a screw to pass through is formed in the fixing seat.

3. The combined core for casting as claimed in claim 2, wherein the lower surface of the bottommost core unit is provided with a recessed portion for receiving the pad block and the fixing seat, and after the pad block and the fixing seat are placed in the recessed portion, the lower surface of the pad block is flush with the lower surface of the bottommost core unit.

4. A combined core for casting as claimed in claim 1, wherein the lifting beam forms a gap with the topmost core unit.

5. A combined core for casting as claimed in claim 4, wherein the lower surface of the lifting beam is a horizontal surface.

6. A combined core for casting as claimed in claim 5, wherein the side surfaces of the lifting beam are provided with projections, the lower surfaces of which are flush with the lower surface of the lifting beam.

7. A combined core for casting as set forth in claim 1, wherein each of the core units is provided with a through-hole through which a wire rod passes.