CN209614134U - A kind of internal core-pulling mechanism and cold box die - Google Patents

Abstract

The utility model relates to a kind of internal core-pulling mechanism and cold box dies, including upper loose piece, lower loose piece, upper sliding track mechanism, downslide rail mechanism, upper pulling mechanism and lower pulling mechanism；The lateral surface of the lateral surface of the upper loose piece and the lower loose piece, which cooperates, is collectively formed the medial surface of sand core；It is oppositely arranged between the upper sliding track mechanism and the downslide rail mechanism；The upper pulling mechanism and lower pulling mechanism are separately positioned on the top of sliding track mechanism and the lower section of downslide rail mechanism, and the upper pulling mechanism and lower pulling mechanism drive the upper loose piece and lower loose piece to be slidably arranged in the upper sliding track mechanism and downslide rail mechanism respectively.The utility model interior pumping loose piece when sand core demoulds can take out convenient and efficient to contract, sand core, to solve the problems, such as the sand core demoulding taking-up that there is muscle in inside.

Description

An inner core-pulling mechanism and a cold box mold

technical field

The utility model relates to the technical field of casting castings, in particular to an inner core-pulling mechanism and a cold box mold.

Background technique

In the casting process of industrial castings, the inner side of the sand core is usually divided into two types: smooth and ribbed. Wherein, when the inner side of the sand core is a smooth surface structure, the sand core can be ejected smoothly by simply setting a certain draft angle. However, when there is a rib structure inside the sand core, it is impossible to normally set a certain draft angle to pull the mold, and the core box must be pulled out to remove the sand core.

Utility model content

Based on this, the purpose of this utility model is to overcome the deficiencies of the prior art, and provide an inner core-pulling mechanism, which can shrink the inner core-pulling block inwardly when the sand core is demoulded, and the sand core can be taken out conveniently and efficiently, thus solving the problem of inner core-pulling mechanism. There is a problem with removing the ribbed sand core from the mold.

In order to achieve the above object, the technical solution adopted by the utility model is:

An inner core-pulling mechanism, comprising an upper movable block, a lower movable block, an upper slide rail mechanism, a lower rail mechanism, an upper drawing mechanism and a lower drawing mechanism; the outer surface of the upper movable block and the outer surface of the lower movable block Cooperate with each other to form the inner surface of the sand core; the upper slide rail mechanism and the lower slide rail mechanism are arranged oppositely; the upper draw mechanism and the lower draw mechanism are respectively arranged above the upper slide rail mechanism and at the below, and the upper drawer mechanism and the lower drawer mechanism respectively drive the upper movable block and the lower movable block to slide and are arranged in the upper slide rail mechanism and the lower slide rail mechanism.

In order to achieve a better technical effect, the further technical improvement also includes that the side wall of the upper movable block is arranged in close contact with the side wall of the lower movable block, and the side wall of the upper movable block is opposite to that of the upper movable block. The middle part is arranged obliquely outward, and the side wall of the lower movable block is arranged obliquely inwardly relative to the middle part of the lower movable block.

In order to achieve a better technical effect, the further technical improvement also includes that the side wall of the upper movable block is arranged in close contact with the side wall of the lower movable block, and the side wall of the upper movable block is opposite to that of the upper movable block. The middle part is arranged obliquely inwardly, and the side wall of the lower movable block is arranged obliquely outward relative to the middle part of the lower movable block.

In order to achieve better technical effects, the further technical improvement also includes that the upper slide mechanism includes an upper guide rail seat and an upper guide rail, the upper guide rail is slidably arranged on the upper guide rail seat, and one end of the upper guide rail is connected to the upper guide rail The movable block is fixedly connected.

In order to achieve better technical effects, further technical improvements include that the lower rail mechanism includes a lower rail seat and a lower rail, the lower rail is slidably arranged on the lower rail seat, and one end of the lower rail is connected to the lower movable block Fixed connection.

In order to achieve better technical effects, the further technical improvement also includes that the upper pumping mechanism includes an upper support, an upper connecting plate, an upper connecting rod and an upper cylinder; the upper support is fixed on the upper slide rail mechanism, so The upper connecting plate is movably sleeved on the upper support, the two ends of the upper connecting rod are respectively connected to the upper movable block and the upper connecting plate in rotation, the upper cylinder is connected to the top of the upper connecting plate, and drives the upper connecting plate Do lifts.

In order to achieve better technical effects, the further technical improvement also includes that the lower drawing mechanism includes a lower support, a lower connecting plate, a lower connecting rod and a lower cylinder; the lower support is fixed at the bottom of the lower rail mechanism, and the The lower connecting plate is movably sleeved on the lower support, the two ends of the lower connecting rod are respectively connected to the lower movable block and the lower connecting plate in rotation, the lower cylinder is connected to the top of the lower connecting plate, and drives the lower connecting plate to lift sports.

In addition, another object of the present utility model is to provide a cold box mold, which includes the inner core-pulling mechanism described in any one of the above, and also includes a cold box upper mold, a cold box lower mold and a ejector rod mechanism, The upper mold of the cold box, the lower film of the cold box and the inner core-pulling mechanism jointly form a sand core cavity, and the ejector mechanism is arranged at the bottom of the sand core cavity.

In order to achieve a better technical effect, the further technical improvement also includes that the upper mold of the cold box is provided with a nozzle, and the nozzle communicates with the upper part of the cavity of the sand core.

In order to achieve a better technical effect, the further technical improvement also includes that the ejector mechanism includes a core support rod, a lower top plate, a lower ejector rod and a guide post, the lower top plate is arranged on the core support rod, The lower end of the lower ejector rod is fixed on the lower top plate, and its upper end presses against the bottom of the sand core cavity, the top end of the guide post is fixed on the bottom of the cold box lower mold, and its lower end passes through the Lower the top plate and extend it downwards.

Therefore, the inner core-pulling mechanism described in the utility model, when the sand core is formed, its outer surface matches the inner side of the sand core, and when the sand core is demolded, the upper and lower pumping mechanisms drive the upper and lower cores respectively. The movable block and the lower movable block slide in the upper and lower rail mechanisms, thereby sequentially driving the upper movable block and the lower movable block to shrink to the center, thereby separating from the inner side of the sand core, and the removal of the sand core is convenient and efficient, which solves the problem of sand with ribs on the inner side. Core stripping problem. Furthermore, the cold box mold described in the utility model forms a sand core cavity through the cooperation between the cold box upper mold, the cold box lower mold and the inner core-pulling mechanism, and forms a sand core cavity after the sand is shot through the core making machine. The core, under the action of the ejector mechanism, can quickly and effectively eject the sand core, so that the production of the sand core with the inner rib structure is efficient and convenient, and the production efficiency is improved.

Description of drawings

Fig. 1 is the structural representation of the inner core-pulling mechanism of the present utility model;

Fig. 2 is an exploded schematic view of the inner core-pulling mechanism of the present invention;

Fig. 3 is the structural representation of the cold box mold of the utility model;

Fig. 4 is a schematic cross-sectional view of the cold box mold of the present invention.

Detailed ways

In order to further illustrate various embodiments, the utility model provides accompanying drawings. These drawings are part of the disclosure content of the present invention, which are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementations and advantages of the present utility model.

As shown in Figures 1 and 2, the inner core-pulling mechanism of the present invention includes an upper movable block 10, a lower movable block 20, an upper slide rail mechanism 30, a lower rail mechanism 40, an upper pumping mechanism 50 and a lower pumping mechanism 60; The outer surface of the upper movable block 10 cooperates with the outer surface of the lower movable block 20 to jointly form the inner surface of the sand core; the upper slide rail mechanism 30 is arranged opposite to the lower slide rail mechanism 40; the The upper drawer mechanism 50 and the lower drawer mechanism 60 are respectively arranged above the upper slide rail mechanism 30 and below the lower slide rail mechanism 40, and the upper drawer mechanism 50 and the lower drawer mechanism 60 drive the upper movable block 10 and the lower movable block respectively. The block 20 is slidably disposed in the upper slide rail mechanism 30 and the lower slide rail mechanism 40 .

There are mainly two ways in which the side wall of the upper movable block 10 and the side wall of the lower movable block 20 of the present utility model are fitted together. The outer setting, the side wall of the lower movable block 20 is inclined inwardly relative to the middle part of the lower movable block 20; The side wall is arranged obliquely outward relative to the middle part of the lower movable block 20 . Its main difference is that when adopting the first design, the lower movable block 20 shrinks at first, and then shrinks the upper movable block 10; But no matter which order is adopted, its structure is consistent, but the order of closing the mold is different.

In addition, in this embodiment, preferably, the number of the upper movable blocks 10 is four, and the number of the lower movable blocks 20 is four, which are respectively arranged alternately and evenly in sequence.

Specifically, the upper sliding rail mechanism 30 and the lower sliding rail mechanism 40 are relatively arranged in a hollow structure enclosed by the upper movable block 10 and the lower movable block 20 . Wherein, the upper slide mechanism 30 includes an upper guide rail seat 31 and an upper guide rail 32 , the upper guide rail 32 is slidably disposed on the upper guide rail seat 31 , and one end of the upper guide rail 32 is fixedly connected with the upper movable block 10 . In addition, the lower rail mechanism 40 includes a lower rail seat 41 and a lower rail 42 , the lower rail 42 is slidably disposed on the lower rail seat 41 , and one end of the lower rail 42 is fixedly connected to the lower movable block 20 .

And the drawing mechanism 50 of the present utility model is installed on the top of the upper slide rail mechanism 30, and the drawing mechanism 60 is installed below the lower rail mechanism 40. Wherein, the upper pumping mechanism 50 includes an upper support 51, an upper connection plate 52, an upper connecting rod 53 and an upper cylinder 54; the upper support 51 is fixed on the upper slide rail mechanism 30, and the upper connection plate 52 is movably sleeved On the upper support 51, the two ends of the upper connecting rod 53 are rotatably connected with the upper movable block 10 and the upper connecting plate 52 respectively, and the upper cylinder 54 is connected with the top of the upper connecting plate 52 and drives the upper connecting plate 52 Do lifts. In addition, the lower pumping mechanism 60 includes a lower support 61, a lower connection plate 62, a lower connecting rod 63 and a lower cylinder 64; the lower support 61 is fixed on the bottom of the lower rail mechanism 40, and the lower connection plate 62 is movable Set on the lower support 61, the two ends of the lower connecting rod 63 are respectively rotatably connected with the lower movable block 20 and the lower connecting plate 62, and the lower cylinder 64 is connected with the top of the lower connecting plate 62, and drives the lower connecting plate 62 Do lifts.

As shown in Figures 3 and 4, the cold box mold of the present utility model includes the above-mentioned core pulling device, and also includes a cold box upper mold 70, a cold box lower mold 80 and a push rod mechanism 90, and the cold box The core box upper mold 70 , the cold core box lower film 80 and the inner core-pulling mechanism jointly form a sand core cavity 100 , and the ejector mechanism 90 is arranged at the bottom of the sand core cavity 100 . Wherein, the cold box upper mold 70 is provided with a nozzle 71 , and the nozzle 71 communicates with the upper part of the sand core cavity 100 .

And described push rod mechanism 90 comprises push core support rod 91, lower top plate 92, lower push rod 93 and guide column 94, and described lower top plate 92 is arranged on the described push core support rod 91, and the lower push rod 93 of described The lower end is fixed on the lower top plate 92, its upper end is pressed against the bottom of the sand core cavity 100, the top of the guide post 94 is fixed on the bottom of the cold box lower mold 80, and its lower end passes through the lower top plate 92 and extend downwards.

The working principle of the patent of the utility model is illustrated below:

When adopting the cold box mold of the present utility model, at first the core sand is injected into the sand core cavity 100 from the nozzle 71 through the core making machine and blown and solidified, so that the sand core in the sand core cavity 100 is formed; The core machine removes the cold core box upper die 70.

Then drive the upper cylinder 54 to drive the upper connecting plate 52 to move upward, and the upper connecting rod 53 connected to the upper connecting plate 52 moves obliquely upwards, and the upper connecting rod 53 drives the upper movable block 10 to pass through the upper guide rail 32 on the upper guide rail seat 31. Move inward, thereby completing the inward core-pulling action of the upper movable block 10; then drive the lower cylinder 64 to drive the lower connecting plate 62 to move downward, and the lower connecting rod 63 connected with the lower connecting plate 62 moves obliquely downward, and the lower connecting rod 63 Drive the lower movable block 20 to move inwards in parallel on the lower guide rail seat 41 by the lower guide rail 42, and complete the inward core-pulling action of the lower movable block 20.

After the inward core-pulling action of the upper movable block 10 and the lower movable block 20 is completed, the top core is moved upward through the top core support rod 91, and the lower top plate 92 and the lower ejector rod 93 move the top core upward along the guide post 94 to complete the top core. action.

And the clamping action of the present utility model is just opposite to above-mentioned steps.

Compared with the prior art, the cold box mold described in the utility model, when the sand core is formed, its outer surface matches the inner side of the sand core; The mechanism respectively drives the upper movable block and the lower movable block to slide in the upper and lower rail mechanisms, thereby sequentially driving the upper movable block and the lower movable block to shrink to the center, thereby separating from the inner side of the sand core, and the removal of the sand core is convenient and efficient. There is a problem with removing the ribbed sand core from the mold. Furthermore, the cold box mold described in the utility model forms a sand core cavity through the cooperation between the cold box upper mold, the cold box lower mold and the inner core-pulling mechanism, and forms a sand core cavity after the sand is shot through the core making machine. The core, under the action of the ejector mechanism, can quickly and effectively eject the sand core, so that the production of the sand core with the inner rib structure is efficient and convenient, and the production efficiency is improved.

The above-mentioned embodiments only express several implementation modes of the utility model, and the description thereof is relatively specific and detailed, but it should not be understood as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims (10)

1. a kind of internal core-pulling mechanism, it is characterised in that: including upper loose piece, lower loose piece, upper sliding track mechanism, downslide rail mechanism, upper pumping Mechanism and lower pulling mechanism；The interior of sand core is collectively formed in the lateral surface of the upper loose piece and the lateral surface mutual cooperation of the lower loose piece Side；It is oppositely arranged between the upper sliding track mechanism and the downslide rail mechanism；The upper pulling mechanism and lower pulling mechanism are set respectively The top in upper sliding track mechanism and the lower section of downslide rail mechanism are set, and the upper pulling mechanism and lower pulling mechanism drive on described respectively Loose piece and lower loose piece are slidably arranged in the upper sliding track mechanism and downslide rail mechanism.

2. internal core-pulling mechanism according to claim 1, it is characterised in that: the side wall of the upper loose piece and the lower loose piece Side wall fitting setting, and outer setting, the side wall of the lower loose piece are tilted towards in the middle part of the relatively upper loose piece of the side wall of the upper loose piece The inwardly angled setting in the middle part of loose piece is descended relatively.

3. internal core-pulling mechanism according to claim 1, it is characterised in that: the side wall of the upper loose piece and the lower loose piece Side wall fitting setting, and the inwardly angled setting in middle part of the relatively upper loose piece of the side wall of the upper loose piece, the side wall of the lower loose piece It is descended in the middle part of loose piece relatively and is tilted towards outer setting.

4. internal core-pulling mechanism according to claim 1, it is characterised in that: the upper sliding track mechanism includes upper rail seat and upper Guide rail, the upper rail are slidably arranged on upper rail seat, and one end of upper rail is fixedly connected with the upper loose piece.

5. internal core-pulling mechanism according to claim 1, it is characterised in that: the downslide rail mechanism includes lower guideway seat under Guide rail, the lower guideway are slidably arranged on lower guideway seat, and one end of lower guideway is fixedly connected with the lower loose piece.

6. internal core-pulling mechanism according to claim 1, it is characterised in that: the upper pulling mechanism includes upper bracket, upper connection Disk, upper connecting rod and upper cylinder；The upper bracket is fixed on sliding track mechanism, and the upper terminal pad is movably set in upper bracket On, the upper connecting rod both ends are rotatablely connected with the upper loose piece and upper terminal pad respectively, at the top of the upper cylinder and upper terminal pad Connection, and upper terminal pad is driven to move up and down.

7. internal core-pulling mechanism according to claim 1, it is characterised in that: the lower pulling mechanism includes undersetting, lower connection Disk, lower link and lower cylinder；The undersetting is fixed on glidepath actuator base, and the lower terminal pad is movably set in undersetting On, the lower link both ends are rotatablely connected with the lower loose piece and lower terminal pad respectively, at the top of the lower cylinder and lower terminal pad Connection, and lower terminal pad is driven to move up and down.

8. a kind of cold box die, it is characterised in that: including internal core-pulling mechanism described in any of the above-described claim, further include Cold-box upper mold, cold-box lower die and post rod mechanism, it is common between the cold-box upper mold, cold-box lower film and internal core-pulling mechanism Sand core type chamber is formed, the bottom of the sand core type chamber is arranged in the post rod mechanism.

9. cold box die according to claim 8, it is characterised in that: the cold-box upper mold is equipped with nozzle, the nozzle It is connected to the top of the sand core type chamber.

10. cold box die according to claim 8, it is characterised in that: the post rod mechanism include plunger tip support rod, under Top plate, lower push rod and guide post, the lower roof plate are arranged on the plunger tip support rod, and the lower end of the lower push rod is fixed on lower top On plate, the upper end presses against the bottom of the sand core type chamber, and the top of the guide post is fixed on the bottom of the cold-box lower die, Its lower end passes through the lower roof plate and extends downwardly away.