CN104057037B - Hand moulding apperance pattern drawing machine - Google Patents

Abstract

The invention discloses a kind of hand moulding apperance pattern drawing machine, comprise: support, cylinder body, piston, pattern drawing bracket, suspension hook, guide pillar and correction base plate, outer wall of cylinder block is fixed on support, cylinder side wall top and the bottom respectively have oil out port, oil-feed interface, cylinder body built-in piston, piston is inverted T-shaped, and lower end and the inboard wall of cylinder block of piston are sealed and matched, and the sliding scale of piston is between oil-feed interface and oil out port; Outer wall of cylinder block forms protuberance, and this protuberance has guide hole; Cylinder body sealing suitable for reading covers cylinder cap, and piston upper end is slidably through cylinder cap; The affixed pattern drawing bracket in piston outer end, pattern drawing bracket is on cylinder cap; The hinged suspension hook of pattern drawing bracket, pattern drawing bracket also forms pilot hole, and the guide hole of this pilot hole and cylinder body protuberance is in same vertical lines, and the guide pillar that stretches through slidably, guide pillar lower end connects correction base plate.The present invention can ensure the pattern drawing mechanism of apperance lifting force perpendicular to die joint, and it can ensure that apperance moves perpendicular to die joint.

Description

Manual molding machine

technical field

The invention belongs to the technical field of casting equipment manufacturing, and in particular relates to a casting manual molding ejection mechanism, which can ensure that the pattern is stable and the moving direction is perpendicular to the mold parting surface when the molding sand is hardened and the pattern is ejected accurately.

Background technique

Manual ordinary molding is the most widely used method for making cavity in casting production. The process operation is to make the casting pattern first. When molding (see Figure 1), the pattern 2' is placed on the molding plate, which is the mold bottom plate 4'. Put on the sand box 1', put the molding sand 3' in the sand box, pound the sand tightly, the sand will be bonded into a whole after chemical or physical changes in the sand box, and then turn the box to lift the mold (see Figure 2). To form a sand mold, the process operation is shown in Figures 1 and 2.

See Figure 2, the surface quality and precision of the cavity 5' affect the surface quality and precision of the casting. It can be seen from the operation process of the molding that the main factors affecting the surface quality of the cavity are the quality of the molding sand, the precision of the pattern, the surface quality and the operation process of the mold . At present, due to the small batch of products in general manual molding, the sand box and tooling for manual molding are simple, and there is no special mechanism for mold removal. The molder beats the shape left and right to loosen it, and then directly lifts the shape out of the cavity by relying on the mold itself. , During the mold lifting process, due to the unstable lifting, it is difficult to ensure that the shape is separated from the parting surface in the vertical direction, which will cause the side of the cavity to collide with the mold, resulting in possible damage to the working surface of the cavity and the surface of the mold.

Modern sand casting technology increasingly uses chemical binder sand molds such as sodium silicate sand and resin sand. This kind of molding sand has higher molding precision due to its high strength, but the molding sand's holding force to the pattern is also much stronger than that of traditional clay sand. Large, which brings the problem of heavy repair work after the cavity is damaged during the mold drawing process, which is a technical problem in modern casting molding production.

Contents of the invention

According to the practical difficulties encountered in the above-mentioned existing manual molding operations, the present invention provides a mold lifting mechanism that ensures that the lifting force of the pattern is perpendicular to the parting surface, and the mold lifting mechanism can ensure that the pattern moves perpendicular to the parting surface; The mechanism is universal to the pattern structure and size within the set size range, and is not affected by the pattern structure and size. In addition, the mold ejection mechanism can also ensure that the pattern ejection process is stable, and the pattern has no side impact on the mold surface.

The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a hand-molded model drawing machine, comprising: a support, a cylinder body, a piston, a drawing bracket, a hook, a guide post and a correction base plate, the outer wall of the cylinder is fixed on the support, and the cylinder The upper and lower parts of the side wall of the body are respectively provided with an oil outlet port and an oil inlet port. The piston is built into the cylinder body, and the piston is in an inverted T shape. Between; the outer wall of the cylinder forms a convex part, and the convex part is opened with a guide hole; the sealing cover of the upper opening of the cylinder body is closed with the cylinder cover, and the upper end of the piston slides through the cylinder cover; On the cylinder head; the lifting bracket is hinged to the hook, and the lifting bracket also forms a guide hole, which is in the same vertical line as the guide hole of the convex part of the cylinder body, and slides through the guide post, and the lower end of the guide post is connected Correct base plate.

Preferably, the support includes two sets of movable supports, and the two sets of movable supports are symmetrically arranged on both sides. Each set of movable supports includes a supporting connecting rod, two adjusting bolts and two supporting blocks. The adjusting bolt is vertically installed, and the locking nut is screwed on the adjusting bolt; the upper section of the adjusting bolt passes through one end of the supporting connecting rod, and the two are slidably fitted, and the end of the supporting connecting rod rests on the locking nut.

Further preferably, the supporting connecting rods on both sides are parallel, and the four supporting blocks are arranged in a rectangular shape.

Further preferably, two base chutes are established, and the base chute forms a guide groove along the length direction, and each supporting connecting rod vertically crosses the guide groove of a base chute, and can slide in the guide groove; The inner ends are all fixedly connected to the outer wall of the cylinder body.

Preferably, a sealing ring is installed between the upper port of the cylinder body and the cylinder head.

Preferably, the cylinder head is fixedly connected to the cylinder body through a bolt connection assembly.

Preferably, the contact portion between the piston and the inner wall of the cylinder is equipped with a second sealing ring.

Preferably, the guide hole of the ejector bracket is fitted into a sliding guide sleeve, and the sliding guide sleeve is slidably matched with the guide post.

Preferably, the guide hole of the cylinder body is fitted into the second sliding guide sleeve, and the second sliding guide sleeve is slidably matched with the guide post.

Preferably, the ejector bracket is connected to the hook through a hinge.

Preferably, there may be one, two or more than two correction mechanisms composed of the guide post and the correction base plate.

The manual molding machine of the present invention includes a mold lifting bracket, a guide correction block and a movable support. The movable support slides in the base chute through the support connecting rod to form a movable connection support, so as to be suitable for casting patterns in different shapes and within a certain size range. . The mold lifting bracket and the oil cylinder slide up and down with the guide post of the guide correction block through the sliding guide sleeve respectively, and the correction bottom plate of the guide correction block is closely connected with the parting surface of the pattern. Since the guide post of the guide correction bottom plate is perpendicular to the correction bottom surface, When the mold machine is working, the cast pattern is connected to the ejector frame through the hook and other tools, so that when the mold is ejected, the ejector frame drives the pattern to move along the guide pillars of the guiding and correcting bottom plate, and the bottom surface of the guiding and correcting bottom plate is corrected. It can also ensure that the pattern is at the overall level, and the pattern will not shake due to the unbalanced force during the ejection process, and ensure that the pattern is smoothly separated from the tightly held molding sand in the direction perpendicular to the parting surface of the pattern during the ejection process, so that the mold ejection process is not smooth. The purpose of damaging the sand surface of the cavity and the pattern, at the same time, due to the precise and vertical upward movement of the ejection process, the drafting slope of the pattern can be reduced, thereby improving the precision of the casting.

Description of drawings

Fig. 1 is the molding drawing of prior art manual modeling.

Fig. 2 is the box-turning-out drawing of manual molding in the prior art.

In Figures 1 and 2, 1'-flask, 2'-pattern, 3'-sand, 4'-mold bottom plate, 5'-cavity.

Fig. 3 is the three-dimensional structural view of the hand-molded model drawing machine of the present invention.

Fig. 4 is a top view structural view of the hand-molded pattern ejector of the present invention.

Fig. 5 is a cross-sectional view along line A-A of Fig. 4 .

Fig. 6 is a B-B sectional view of Fig. 4 .

In Figure 3-6, 1-drawing bracket, 2-cylinder head, 3-sealing device, 4-bolt connection assembly, 5-cylinder body, 6-piston, 7-hook, 8-hook hinge, 9- Guide pillar, 10-guide sleeve, 11-guide sleeve, 12-correction base plate, 13-pattern, 14-molding sand, 15-support platform, 16-support block, 17-adjusting bolt, 18-lock nut, 19-slide Groove rod, 20-support connecting rod.

detailed description

The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Referring to Fig. 3-6, present embodiment's hand-molded pattern lifting machine, its structure is as follows:

It has two sets of movable supports to form four stable support points. The two sets of movable supports are symmetrically arranged on both sides. Each set of movable supports includes a supporting connecting rod 20, two adjusting bolts 17 and two supporting blocks 16. The supporting blocks 16 is in the shape of a cube, which is placed on the support platform 15, and the bolt 17 is vertically installed on the support block 16, and the lock nut 18 is screwed on the bolt 17. The upper section of the bolt 17 passes through one end of the supporting connecting rod 20, and the two are slidingly fitted. This end of the supporting connecting rod 20 rests on the locking nut 18, and the height of the supporting connecting rod 20 is adjusted by adjusting the height of the locking nut 18. high. The supporting connecting rods 20 on both sides are parallel, and the four supporting blocks 16 are arranged in a rectangular shape.

The base chute 19 forms a guide groove 19-1 along the length direction, and the support connecting rod 20 vertically traverses the guide groove 19-1 of the base chute 19, and can slide in the guide groove, so that the support point position and the support distance can be adjusted.

Through the movement of the movable support, the position of the support can be adjusted arbitrarily within a certain range to suit different mold structures and production environments.

The inner ends of the base chute 19 on both sides are all fixedly connected to the outer wall of the cylinder body 5 (in this embodiment, the base chute 19 on both sides is integrated with the cylinder body 15), and the cylinder body 5 is built with an oil cylinder piston capable of sliding up and down. 6. The piston of the oil cylinder is in an inverted T shape. The lower end of the piston 6 of the oil cylinder is liquid-tightly matched with the inner wall of the cylinder body 5. The sliding range of the lower end is between the oil inlet interface and the oil outlet interface of the cylinder body 5, and the piston 6 of the oil cylinder and the inner wall of the cylinder body 5 The inner wall contact part can be equipped with a sealing ring. The lower opening of the cylinder block 5 is closed, and the upper opening is sealed to cover the cylinder head 2, and a sealing ring 3 is installed at the assembly place of the two. The cylinder head 2 is fixedly connected with the cylinder body 5 through the bolt connection assembly 4 , and the upper end of the oil tank piston 6 slides through the cylinder head 5 , and the two are in sealing fit. The upper end of the oil cylinder piston 6 is fixedly connected to the ejector bracket 1 (in this embodiment, the oil cylinder piston 6 and the ejector bracket 1 are in one shape). The upper end of the ejector bracket 1 is on the cylinder head 2 (ie outside the cylinder body 5).

The side wall of the oil cylinder 5 is also provided with an oil inlet interface 5-1 and an oil outlet interface 5-2, the oil inlet interface 5-1 is at the bottom, the oil outlet interface 5-2 is at the top, and the up and down sliding range of the oil tank piston 6 lower end is The distance between the two interfaces.

The side wall of oil cylinder 5 also protrudes outwards to form a guide portion 5-3, and this guide portion has a vertical hole, and slide guide sleeve 11 is packed in the hole.

The opposite two ends 1-1, 1-2 of the lifting bracket 1 are equipped with movable hook 7, sliding guide sleeve 10 respectively, and one end 1-1 is connected with movable hook 7 by hinge 8, and the other end 1-2 is provided with a Hole, the hole is loaded into the sliding guide sleeve 10, the sliding guide sleeve 10 is above the sliding guide sleeve 11, and both guide holes are in the same vertical straight line.

The two sliding guide sleeves 10, 11 extend through the guide post 9, and the guide post 9 forms a sliding connection with the two guide sleeves 11. The lower end of guide post 9 is connected with correction base plate 12. During manufacture, it should be ensured that the correction base plate and guide post have a higher verticality, so that the ejection support slides perpendicular to the direction of the guide correction base plate when the mold is pulled.

When in use, move the movable support connecting rod, place the support block on the edge of the sand box or other support surface, adjust the height of the support block through the adjustment bolt and lock nut on the support block, so that the four support points are on the same plane. When the hook is in a tensioned state, the lifting bracket is at the lowest position.

The oil inlet port of the cylinder body 5 is connected with the oil outlet pipe of the manual plunger fuel pump (not shown in the figure, can be purchased or self-made) through the high-pressure oil pipe, and the oil outlet port of the cylinder body 5 is connected with the fuel tank of the fuel pump. The mold ejection power is provided by a manual plunger pump to form a hydraulic mold ejector. The bottom surface of the correction base plate 12 is attached to the parting surface of the pattern 13 . Suspension hook 7 links to each other with pattern 13 by wire rope.

Hand crank the oil pump rocker, the piston is under the pressure of the high-pressure oil, and then the mold lifting bracket is driven by the hook to move the pattern 13 upwards along the guide post through the guide sleeve to complete the mold lifting. Under the action of the correction base plate, the pattern is always perpendicular to the guide column, which can ensure that the resultant force of pattern ejection is perpendicular to the parting surface of the pattern, and the moving direction of the pattern is perpendicular to the parting surface of the pattern. The mold does not shake or shake during the pattern ejection process, and the ejection is stable , does not damage the sand mold 14, can reduce the drafting angle of the pattern, thereby improving the precision of the casting. After the pattern is separated from the molding sand, the mold can be left from the cavity with other tools.

The manual molding pattern ejecting mechanism of the present invention may form a series of products aiming at patterns of different sizes by changing the size.

Operating Instructions:

Adopt above-mentioned embodiment ejecting machine, its ejecting process is:

1. The pattern 13 is connected with the hook 7 on the mold lifting bracket through a tool, or the mold is directly connected with the hook 7 through a hook.

2. Place the mold pulling machine on the parting surface of the pattern 13 (see Figure 6), and the guide correction base plate 12 is attached to the mold parting surface, so as to ensure that the correction base plate 12 of the guide correction block is always in line with the pattern parting surface during the mold lifting process. The mold surface is in contact to ensure that the shape and the parting direction are in a vertical state.

3. Move the movable supporting connecting rod 20 to place the four supporting blocks 16 on an appropriate supporting platform 15 .

4. Adjust the adjusting bolt 17 of the movable support, adjust the supporting height of the supporting block 16, make the lifting hook 7 in a tensioned state, and at the same time place the four supporting points in a plane, at this time, the moving mechanism of the lifting mold is separated from the pattern. The profiles are vertical.

5. Operate the manual plunger fuel pump to move the guide sleeve 10 on the ejection bracket upward along the guide post of the guide correction block, so that the pattern 13 is separated from the molding sand 14 to complete the ejection.

The preferred embodiments of the present invention have been described in detail above. For those of ordinary skill in the art, according to the ideas provided by the present invention, there will be changes in the specific implementation, and these changes should also be regarded as protection of the present invention. scope.

Claims (10)

1. hand moulding apperance pattern drawing machine, it is characterized in that comprising: support, cylinder body, piston, pattern drawing bracket, suspension hook, guide pillar and correction base plate, outer wall of cylinder block is fixed on support, cylinder side wall top and the bottom respectively have oil out port, oil-feed interface, cylinder body built-in piston, piston is inverted T-shaped, and lower end and the inboard wall of cylinder block of piston are sealed and matched, and the sliding scale of piston is between oil-feed interface and oil out port; Outer wall of cylinder block forms protuberance, and this protuberance has guide hole; Cylinder body sealing suitable for reading covers cylinder cap, and piston upper end is slidably through cylinder cap; The affixed pattern drawing bracket in piston outer end, pattern drawing bracket is on cylinder cap; The hinged suspension hook of pattern drawing bracket, pattern drawing bracket also forms pilot hole, and the guide hole of this pilot hole and cylinder body protuberance is in same vertical lines, and the guide pillar that stretches through slidably, guide pillar lower end connects correction base plate.

2. hand moulding apperance pattern drawing machine as claimed in claim 1, it is characterized in that: described support comprises two cover movable supporting, two cover movable supporting are laid in both sides symmetrically, often overlap movable supporting and comprise supporting linkage, two adjusting bolts and two back-up blocks, back-up block is Fang Tizhuan, at right angle setting adjusting bolt on back-up block, adjusting bolt spins locking nut; The epimere of adjusting bolt passes wherein one end of supporting linkage, and be slidably matched between the two, this end of supporting linkage is held on locking nut.

3. hand moulding apperance pattern drawing machine as claimed in claim 2, is characterized in that: the supporting linkage of both sides parallels, and the rectangular shape of four back-up blocks is laid.

4. hand moulding apperance pattern drawing machine as claimed in claim 2 or claim 3, is characterized in that: establish two chute of bases, chute of base forms guide groove along its length, and each supporting linkage vertically crosses the guide groove of a chute of base, and can slide in guide groove; The inner of two chute of bases is all fixedly connected on the outer wall of cylinder body.

5. hand moulding apperance pattern drawing machine as claimed in claim 1, is characterized in that: between the suitable for reading and cylinder cap of cylinder body, sealing ring is housed.

6. the hand moulding apperance pattern drawing machine as described in claim 1 or 5, is characterized in that: cylinder cap is bolted assembly and is fixedly connected with cylinder body.

7. the hand moulding apperance pattern drawing machine as described in claim 1 or 5, is characterized in that: the second sealing ring is assembled in the contact internal walls portion of piston and cylinder body.

8. hand moulding apperance pattern drawing machine as claimed in claim 1, is characterized in that: the pilot hole of pattern drawing bracket loads slide-and-guide cover, and slide-and-guide cover is slidably matched with guide pillar.

9. the hand moulding apperance pattern drawing machine as described in claim 1 or 8, is characterized in that: the guide hole of cylinder body loads the second slide-and-guide cover, and the second slide-and-guide cover is slidably matched with guide pillar.

10. the hand moulding apperance pattern drawing machine as described in claim 1 or 8, is characterized in that: pattern drawing bracket is connected with suspension hook by hinge.