CN212682356U - Blade-embedded nozzle ring sand core mold structure - Google Patents

Abstract

The utility model discloses an embedded nozzle cascade psammitolite mould structure of blade, compact structure, cooperation are reasonable, the delivery is convenient. The outer-inner-distance-retaining type blade clamping device comprises a chassis, an outer retaining ring, an inner retaining ring, an outer distance-retaining block, an inner distance-retaining block, an outer pressing ring and an inner pressing ring, wherein an annular table is arranged on the upper end face of the chassis, a first outer annular seam allowance is formed, a first inner annular seam allowance is formed, the outer retaining ring is positioned at the first outer annular seam allowance, the inner retaining ring is positioned at the first inner annular seam allowance, a second outer annular seam allowance is formed on the upper portion of the annular table, a second inner annular seam allowance is formed, the outer distance-retaining block is fixedly connected with the second outer annular seam allowance in an inserting mode, the outer distance-retaining ring is fixedly connected with the outer distance-retaining block in an inserting mode, the inner distance-retaining block is fixedly connected with the second inner annular seam allowance, the inner pressing ring is pressed on the outer distance-retaining ring, the inner distance-retaining block is pressed on the inner retaining ring, blade clamping and positioning spaces are formed between the adjacent outer distance-retaining blocks.

Description

Blade-embedded nozzle ring sand core mold structure

Technical Field

The utility model relates to a sand casting technical field especially relates to an embedded nozzle cascade psammitolite mould structure of blade. The mould structure is particularly suitable for manually making cores from tung oil sand and resin sand.

Background

The nozzle ring blade core making mold is the most critical part of sand casting, 20 blades are embedded into the core making mold, the inner and outer arc distance blocks, the chassis, the gap, the inner and outer retainer rings, the retainer ring, the mold taking sequence and the like of the blades need to be considered, a reasonable mold structure is vital to product quality and efficiency, the mold structure is simple and easy to learn to operate, and the problem that the blades are difficult to embed into the core is solved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a blade embedded nozzle ring psammitolite mould structure, compact structure, cooperation are reasonable, the drawing of patterns is convenient.

The purpose of the utility model is realized like this:

a sand core mould structure of a blade-embedded nozzle ring,

the nozzle ring comprises a chassis, an outer retaining ring, an inner retaining ring, an outer distance block, an inner distance block, an outer pressing ring and an inner pressing ring, wherein an annular table is arranged on the upper end face of the chassis, a first outer annular spigot and a first inner annular spigot are formed between the annular table and the upper end face of the chassis, the outer retaining ring is positioned at the first outer annular spigot, the inner retaining ring is positioned at the first inner annular spigot, the cross section of the annular table is in a shape like a Chinese character 'tu', a second outer annular spigot and a second inner annular spigot are formed at the upper part of the annular table, the number of the outer distance blocks corresponds to the number of blades of the nozzle ring, the outer distance blocks are fixedly inserted between the second outer annular spigot and the outer retaining ring and are uniformly distributed, the inner distance blocks are correspondingly arranged with the outer distance blocks, the inner distance blocks are fixedly inserted between the second inner annular spigot and the inner retaining ring and are uniformly distributed, and lower blade clamping grooves are formed on the annular table between the corresponding outer distance blocks and the inner distance blocks, the blade clamping and positioning device is used for embedding the lower end of a fixed blade, the shapes of the outer distance blocks and the inner distance blocks correspond to the shapes of outer arcs and inner arcs of the blade, and blade clamping and positioning spaces are formed between the adjacent outer distance blocks and between the adjacent inner distance blocks and are used for embedding the inner end and the outer end of the fixed blade;

the outer pressure ring is pressed on the outer check ring and the outer distance block to be positioned, the inner pressure ring is pressed on the inner check ring and the inner distance block to be positioned, and the inner pressure ring is further provided with an upper blade clamping groove used for being embedded into the embedded connecting part at the upper end of the fixed blade.

Preferably, the lower terminal surface of outer clamping ring is equipped with annular checkpost, the up end of outer retaining ring is equipped with ring groove and annular checkpost cooperation location.

Preferably, the inner distance block is lower than the inner retainer ring, the lower end face of the inner pressing ring is in a step shape and corresponds to the inner retainer ring and the inner distance block, and the upper blade clamping groove is formed in the lower end face of the inner pressing ring.

Preferably, the number of the upper blade clamping grooves and the lower blade clamping grooves corresponds to the number of the blades of the nozzle ring.

Preferably, the lower end surface of the chassis is provided with an annular reinforcing rib.

Preferably, an annular lightening groove is formed in the peripheral wall of the outer retainer ring along the circumferential direction.

Preferably, the outer clamping ring is divided into two half-rings.

A core making method of a sand core die for a blade-embedded nozzle ring comprises the following steps:

the blade is embedded and fixed:

placing an inner retainer ring and an outer retainer ring on a chassis, then placing each inner distance block and each outer distance block, placing the lower end of each blade into a lower blade clamping groove on the chassis, positioning the inner end of each blade between two corresponding inner distance blocks, positioning the outer end of each blade between two corresponding outer distance blocks, finally placing the inner pressure ring, clamping an embedded connecting part at the upper end of each blade into an upper blade clamping groove, and then placing an outer pressure ring;

core making:

filling the mixed tung oil sand into all spaces between the outer spacing block and the inner spacing block, compacting, and scraping out the tung oil sand which overflows from the die by using a scraper; get the interior ring of pressing off, two piece box cushion blocks that turn over on the cushion, the reuse turns over the flat board of case and covers the upset of mould upper end and come, get the bottom plate along vertical direction, sheathe in core head outer lane and core head inner circle, fill the tung oil sand and the compaction between core head outer lane and core head inner circle, get core head outer lane and core head inner circle along vertical direction, retreat outer retaining ring along vertical direction, get each outer distance piece again, get the interior retaining ring along vertical direction, withdraw from each interior distance piece again, withdraw from the outer pressure ring, take out the box cushion block that turns over, the system core is ended.

Preferably, the two box turning cushion blocks are arc plates in an inferior arc shape, so that the two box turning cushion blocks can be horizontally and inwardly taken out.

Preferably, the lower end of the outer core print ring is matched and positioned with the outer retainer ring and the outer distance block, the lower end of the inner core print ring is matched and positioned with the inner retainer ring and the inner distance block, a tapered space with a small upper part and a large lower part is formed between the outer core print ring and the inner core print ring, and the lower end of the tapered space corresponds to the blade.

Since the technical scheme is used, the utility model discloses following beneficial effect has:

the utility model discloses an inside and outside distance piece (arc) of blade picture and foundry goods picture design, the distance piece needs the chassis distance, gets the inside and outside distance piece in proper order after having made the core and fall, makes the blade expose, has solved inside and outside distance piece location, blade clearance, mould direction and sequence problem.

The utility model is simple in operation, easy learning have solved the difficult problem of blade embedding psammitolite.

Drawings

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

FIG. 2 is a schematic top view of the chassis;

FIG. 3 is a schematic sectional view A-A of FIG. 2;

FIG. 4 is a schematic view of the installation of a blade;

FIG. 5 is a schematic view of a core making process;

FIG. 6 is a schematic structural view of an inner pressing ring;

fig. 7 is a schematic sectional view B-B of fig. 6.

Detailed Description

The embedded nozzle cascade of blade, with blade embedding core before need casting, then casting nozzle cascade (the inboard direction of core), blade (the embedding connecting portion of blade upper end) embedding nozzle cascade on making the core, the utility model discloses the psammitolite (core) of preparation can cooperate with the casting mould of nozzle cascade, make the cast nozzle cascade fixed with the direct embedding of blade. Therefore, the utility model provides a preparation mould, method of this core.

Referring to fig. 1, the die material of the blade-embedded nozzle ring sand core die structure is cast aluminum, so that the die structure is light and reasonable.

The utility model discloses a chassis 1, outer retainer ring 2, interior retaining ring 7, outer distance piece 4, interior distance piece 5, outer pressure ring 3, interior pressure ring 6, chassis 1's lower terminal surface is equipped with annular strengthening rib. Be equipped with annular platform on the up end of chassis 1, form first outer annular tang, first interior annular tang between annular platform and the up end of chassis 1, outer retaining ring 2 is located first outer annular tang, be equipped with along circumference on the periphery wall of outer retaining ring 2 and be annular and subtract heavy groove. The inner check ring 7 is positioned at the first inner annular spigot, the cross section of the annular table is in a shape like a Chinese character 'tu', the upper part of the annular table forms a second outer annular spigot and a second inner annular spigot, the number of the outer distance blocks corresponds to the number of the blades of the nozzle ring, in the embodiment, the number of the outer distance blocks is 20, the outer distance blocks 4 are fixedly inserted between the second outer annular spigot and the outer check ring 2 and are uniformly distributed, the inner distance blocks 5 are correspondingly arranged with the outer distance blocks 4, the inner distance blocks 5 are fixedly inserted between the second inner annular spigot and the inner check ring 7 and are uniformly distributed, the outer distance blocks 4 and the inner distance blocks 5 are respectively matched with the inner end part and the outer end part of each blade 8 and are spliced into a ring, and the shapes of the outer distance blocks 4 and the inner distance blocks 5 correspond to the shapes of the blades.

The outer pressing ring 3 is pressed on the outer retainer ring 2 and the outer distance block 4 to be positioned, the outer edge and the inner edge of the outer pressing ring 3 are respectively flushed with the outer retainer ring 2 and the outer distance block 4, the lower end face of the outer pressing ring 3 is provided with an annular clamp, and the upper end face of the outer retainer ring 2 is provided with an annular clamping groove to be matched and positioned with the annular clamp. The outer pressing ring 3 is divided into two half rings, the bottom is arranged at the back of the mold turnover, and the outer pressing ring 3 is withdrawn from the side surface after the outer ring 2 is taken off so as to be convenient for mold withdrawal.

The inner pressing ring 6 is pressed on the inner retainer ring 7 and the inner distance block 5 for positioning, and the outer edge of the inner pressing ring 6 is flush with the outer edge of the inner distance block 5. The inner distance block 5 is lower than the inner retainer ring 7, and the lower end face of the inner pressing ring 6 is in a step shape and corresponds to the inner retainer ring 7 and the inner distance block 5. The function of clamping ring is to guarantee the position of distance piece.

And a lower blade clamping groove 13 is formed in an annular table between the corresponding outer distance block and the inner distance block and used for being embedded into the lower end of the fixed blade, and a blade clamping and positioning space is formed between the adjacent outer distance blocks and between the adjacent inner distance blocks and used for being embedded into the inner end and the outer end of the fixed blade, namely, the distance between the blades is limited (see fig. 4). The inner and outer arcs of the blade are tightly attached by the two inner spacing blocks and the two outer spacing blocks, so that stable positioning is formed. And an upper blade clamping groove 14 is also formed in the inner ring and used for being embedded into the embedded connecting part at the upper end of the fixed blade. The upper blade clamping groove 14 is arranged on the lower end face of the inner pressing ring. The number of the upper blade clamping grooves and the number of the lower blade clamping grooves correspond to the number of the blades of the nozzle ring. In this embodiment, the number of the upper blade clamping grooves and the number of the lower blade clamping grooves are 20.

A core making method of a sand core die for a blade-embedded nozzle ring comprises the following steps:

the blade is embedded and fixed:

an inner retainer ring 7 and an outer retainer ring 2 are placed on a chassis, an inner distance block 5 is placed by the inner retainer ring 7, an outer distance block 4 is placed by the outer retainer ring 2, the lower end (straight edge) of a blade is placed in a lower blade clamping groove on the chassis 1, the inner end and the outer end of the blade are positioned at the inner distance block 5 and the outer distance block 4, the inner distance block 5 and the outer distance block 4 are tightly close to the blade, 20 blades are fully placed by analogy, finally, an inner pressure ring 6 is placed, an embedded connecting part at the upper end of the blade is clamped into an upper blade clamping groove, and an outer pressure ring 3 is placed;

core making:

filling the mixed tung oil sand into all spaces between each outer distance block 4 and the corresponding inner distance block 5 in sequence and compacting, wherein the filling height of the tung oil sand is flush with the upper end of the inner pressure ring, and then scraping out the tung oil sand which is blown out of the die by a scraper to form a sand scraping plane; the box turnover cushion blocks 9 and 10 are arc-shaped plates, the summary of the embodiment is 60 degrees, and the box turnover cushion blocks are convenient to take out from the inner side. Get interior pressing ring 6 and fall, two piece box cushion 9, 10 that turn over on the cushion, reuse turns over the case flat board (a whole board, cover whole mould upper end) and covers the quick upset of the plane of scraping of tung oil sand, get bottom plate 1 along vertical direction, sheathe in core head outer lane and inner circle 11, 12, it flushes with the compaction (fill-in height and core head outer lane and inner circle upper end) in proper order to fill in at blade department, the slope can guarantee the connection in later stage, and be convenient for take out, get core head inner circle 11 and outer lane 12 along vertical direction, get outer retaining ring 2 along vertical direction, withdraw outer distance piece 4 in proper order, get inner retaining ring 7 along vertical direction, then withdraw inner distance piece 5 in proper order, then withdraw outer pressing ring 3 respectively (two half-arc circles), take out the box cushion that turns over, the core making finishes.

Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.

Claims (7)

1. The utility model provides an embedded nozzle ring psammitolite mould structure of blade which characterized in that:

the novel nozzle ring comprises a chassis (1), an outer retainer ring (2), an inner retainer ring (7), an outer distance block (4), an inner distance block (5), an outer pressing ring (3) and an inner pressing ring (6), wherein an annular table is arranged on the upper end face of the chassis (1), a first outer annular spigot and a first inner annular spigot are formed between the annular table and the upper end face of the chassis (1), the outer retainer ring (2) is positioned on the first outer annular spigot, the inner retainer ring (7) is positioned on the first inner annular spigot, the cross section of the annular table is in a shape like a Chinese character 'tu', the upper part of the annular table forms a second outer annular spigot and a second inner annular spigot, the number of the outer distance blocks (4) corresponds to the number of blades of the nozzle ring, the outer distance blocks (4) are spliced and fixed between the second outer annular spigot and the outer retainer ring (2) and are uniformly distributed, and the inner distance blocks (5) and the outer distance blocks (4) are correspondingly arranged, the inner distance blocks (5) are inserted and fixed between the second inner annular spigot and the inner retainer ring (7) and are uniformly distributed, lower blade clamping grooves (13) are formed in the annular platforms between the corresponding outer distance blocks (4) and the inner distance blocks (5) and are used for embedding the lower ends of the fixed blades, the shapes of the outer distance blocks (4) and the inner distance blocks (5) correspond to the shapes of outer arcs and inner arcs of the blades, and blade clamping and positioning spaces are formed between the adjacent outer distance blocks (4) and between the adjacent inner distance blocks (5) and are used for embedding the inner ends and the outer ends of the fixed blades;

the outer pressing ring (3) is pressed on the outer check ring (2) and the outer distance block (4) to be positioned, the inner pressing ring (6) is pressed on the inner check ring (7) and the inner distance block (5) to be positioned, and an upper blade clamping groove is further formed in the inner pressing ring (6) and used for being embedded into the embedded connecting portion at the upper end of the fixed blade.

2. The sand core die structure of the blade-embedded nozzle ring of claim 1, wherein: the lower terminal surface of outer clamping ring (3) is equipped with annular checkpost, the up end of outer retaining ring (2) is equipped with annular clamping groove and annular checkpost cooperation location.

3. The sand core die structure of the blade-embedded nozzle ring of claim 1, wherein: interior distance piece (5) are less than interior retaining ring (7), the notch cuttype is personally submitted to the lower extreme of interior clamping ring (6), and corresponds with interior retaining ring (7), interior distance piece (5), go up the lower terminal surface of blade draw-in groove setting including on clamping ring (6).

4. The sand core die structure of the blade-embedded nozzle ring of claim 1, wherein: the number of the upper blade clamping grooves and the number of the lower blade clamping grooves correspond to the number of the blades of the nozzle ring.

5. The sand core die structure of the blade-embedded nozzle ring of claim 1, wherein: the lower end face of the chassis (1) is provided with an annular reinforcing rib.

6. The sand core die structure of the blade-embedded nozzle ring of claim 1, wherein: and an annular weight reduction groove is formed in the peripheral wall of the outer retainer ring (2) along the circumferential direction.

7. The sand core die structure of the blade-embedded nozzle ring of claim 1, wherein: the outer pressing ring (3) is divided into two half rings.

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