CN210450817U

CN210450817U - New and old sand mixing arrangement of casting usefulness

Info

Publication number: CN210450817U
Application number: CN201921159741.9U
Authority: CN
Inventors: 何广全
Original assignee: Honda Foundry Foshan Co ltd
Current assignee: Honda Foundry Foshan Co ltd
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2020-05-05
Anticipated expiration: 2029-07-23

Abstract

The utility model discloses a new old sand mixing arrangement of casting usefulness, including frame, new sand box and the used sand case of setting in the frame, the below of new sand box and used sand case is provided with a sand mixing arrangement, the sand mixing arrangement includes the blanking fill that sets up vertically, sets up at the lid of blanking fill upside and a plurality of stabilizer blades that are used for supporting the blanking fill, be provided with the rabbling mechanism who is arranged in stirring the blanking fill molding sand on the lid, the bottom of blanking fill is provided with a sealing ring, is located and is provided with a connecting rod between two stabilizer blades of arbitrary one sand box below, be provided with a sack fixed establishment on the connecting rod. The new and old sand mixing device avoids the flying of molding sand through the obstruction of the cover body; and the molding sand is because collar and seal ring have fixed and sealed the sack when the bagging-off, and the staff need not handheld sack, avoids inhaling the molding sand, ensures staff's health and the operational environment in workshop.

Description

New and old sand mixing arrangement of casting usefulness

Technical Field

The utility model relates to a casting production technical field, in particular to new and old sand mixing arrangement of casting usefulness.

Background

Compared with other casting methods, the sand casting method has the advantages of low cost, simple production process and short production period, so the casting method is commonly used for manufacturing some automobile parts. In order to save the cost of sand, the foundry sand is recycled, and the foundry sand is called used sand. The used sand can reduce the performance and the quantity of the molding sand after being used, and can not be directly reused, and the used sand can be reused after being mixed with a part of new sand.

Some existing new and old sand mixing devices easily cause dust when mixing and stirring new and old sand, pollute the environment of a whole workshop, and easily cause pneumoconiosis after workers inhale for a long time. In addition, need the bagging-off to store after new and old sand mixes well to carry and take in the future, generally need the handheld sack of workman to aim at the sand outlet, intensity of labour is big, and the molding sand spills over easily from between sack and the sand outlet moreover, and the workman inhales the molding sand easily, harms healthily.

It is seen that improvements and enhancements to the prior art are needed.

SUMMERY OF THE UTILITY MODEL

In view of the foregoing prior art, an object of the present invention is to provide a new and used sand mixing device for casting, which is convenient for sand bagging, and avoids the sand overflow to cause flying.

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

a new sand and old sand mixing device for casting comprises a rack, a new sand box and an old sand box which are arranged on the rack, wherein a sand mixing device is arranged below the new sand box and the old sand box, the sand mixing device comprises a blanking hopper which is vertically arranged, a cover body which is arranged on the upper side of the blanking hopper and a plurality of support legs which are used for supporting the blanking hopper, a stirring mechanism which is used for stirring molding sand in the blanking hopper is arranged on the cover body, and the new sand box and the old sand box are respectively connected with the cover body through guide pipes; the bottom of blanking fill is provided with a sealing ring, is located and is provided with a connecting rod between two stabilizer blades of arbitrary sand box below, be provided with a sack fixed establishment on the connecting rod, sack fixed establishment is including branch, hold-down mechanism and collar, the one end and the connecting rod of branch are connected, are provided with hold-down mechanism on the other end, hold-down mechanism is used for driving the collar and removes along vertical direction, makes the collar support and presses on the sealing ring.

The supporting rod is rotatably connected with the connecting rod, the pressing mechanism comprises a guide block, a clamping block and a hand-screwed screw, a guide groove is vertically formed in the guide block, and the clamping block can vertically slide along the guide groove; the bottom of the guide block is provided with a threaded hole communicated with the guide groove, and the hand-screwed screw is screwed into the threaded hole and is pressed against the fixture block; the side part of the mounting ring is provided with a bulge, and the mounting ring is fixedly connected with the clamping block through the bulge.

The stirring mechanism comprises a bearing seat arranged on the upper surface of the cover body, a rotating shaft is arranged in the bearing seat, the bottom of the rotating shaft extends downwards into the blanking hopper and is connected with a stirrer, and a driving device used for driving the rotating shaft to rotate is further arranged on the cover body.

The driving device comprises a motor mounting frame and a driving motor arranged on the motor mounting frame, a main shaft of the driving motor faces downwards vertically and is sleeved with a first gear, a second gear is sleeved on the rotating shaft and is meshed with the first gear, and the diameter of a reference circle of the first gear is larger than that of the second gear.

The stirrer comprises a shaft sleeve and a plurality of blades fixed on the outer wall of the shaft sleeve; the shaft sleeve is sleeved on the rotating shaft and locked by the locking screw.

The paddles comprise two first paddles arranged at the upper part of the shaft sleeve and two second paddles arranged at the lower part of the shaft sleeve; in the projection on the horizontal plane, the included angle between the first paddle and the second paddle is 180 degrees.

The blanking hopper comprises a truncated cone part and a square barrel part which are connected with each other, the sealing ring is arranged at the outer bottom end of the square barrel part, and the mounting ring is matched with the sealing ring in shape.

The bottom of the new sand box and the bottom of the old sand box are both communicated and provided with discharge hoppers, the lower ends of the discharge hoppers are provided with discharge barrels, the discharge barrels are provided with proportional valves, and the discharge barrels are communicated with the cover body through the guide pipes.

Transparent glass is arranged on the discharging funnel, and scale marks are arranged on the transparent glass.

The new sand box and the old sand box are respectively connected with a feeding auger.

Has the advantages that:

the utility model provides a new and old sand mixing device for casting, compared with the prior art, the new and old sand avoids the flying of molding sand due to the separation of a cover body in the stirring and mixing process; and the molding sand is because collar and seal ring have fixed and sealed the sack when the bagging-off, and the staff need not handheld sack, avoids inhaling the molding sand, ensures staff's health and the operational environment in workshop.

Drawings

Fig. 1 is a perspective view of a new sand and old sand mixing device for casting according to the present invention.

Fig. 2 is a partially enlarged view of the region M in fig. 1.

Fig. 3 is the utility model provides a new and old sand mixing arrangement for casting, hold-down mechanism's schematic structure.

Fig. 4 is a front view of a new sand and used sand mixing device for casting according to the present invention.

Fig. 5 is a partially enlarged view of the region L in fig. 4.

Detailed Description

The utility model provides a new and old sand mixing arrangement of casting usefulness, for making the utility model discloses a purpose, technical scheme and effect are clearer, more clear and definite, and it is right that the following refers to the drawing and the embodiment is lifted the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of the invention.

Referring to fig. 1 to 5, the present invention provides a new sand and used sand mixing device for casting. The components within the drop hopper are drawn in phantom in fig. 4, indicating that they cannot be viewed directly from the outside. The drawings are only for explaining the structural principle of the stirring device and are not to scale with the actual product.

The new and old sand mixing device for casting comprises a frame 1, a new sand box 2 and an old sand box 3 which are arranged on the frame, wherein a sand mixing device 4 is arranged below the new sand box and the old sand box, the sand mixing device 4 comprises a blanking hopper 41 which is vertically arranged, a cover body 42 which is arranged on the upper side of the blanking hopper and a plurality of support legs 43 which are used for supporting the blanking hopper, a stirring mechanism 5 which is used for stirring the molding sand in the blanking hopper is arranged on the cover body 42, and the new sand box 2 and the old sand box 3 are respectively connected with the cover body 42 through guide pipes 6; the bottom end of the blanking hopper 41 is provided with a sealing ring 44, a connecting rod 45 is arranged between two support legs positioned below any one sand box, a bag opening fixing mechanism 7 is arranged on the connecting rod, the bag opening fixing mechanism 7 comprises a supporting rod 71, a pressing mechanism 72 and a mounting ring 73, one end of the supporting rod 71 is connected with the connecting rod 45, the other end of the supporting rod 71 is provided with the pressing mechanism 72, and the pressing mechanism 72 is used for driving the mounting ring 73 to move along the vertical direction so that the mounting ring 73 is pressed on the sealing ring 44 in a propping manner. In the present embodiment, the cross section of the blanking hopper 41 is rectangular, so that 4 support legs 43 are provided and are respectively provided at 4 corners of the blanking hopper; the tie rod 45 may be disposed between two legs 43 under the new sand box 2 or between two legs 43 under the used sand box 3 or between two legs 43 under the used sand box, since bagging is facilitated and tie rod interference is prevented. The cover 42 and the blanking hopper 41 may be connected by welding in order to prevent the molding sand from leaking through the gap between the cover and the blanking hopper.

During operation, firstly, the bag mouth flanging of the bag is sleeved on the mounting ring 73, and under the condition that the edge of the mounting ring is aligned with the edge of the sealing ring in the vertical projection direction, the pressing mechanism 72 drives the mounting ring to vertically move towards the direction of the sealing ring 44, so that the bag mouth is clamped between the mounting ring 73 and the sealing ring 44. Then the new sand box and the old sand box put the new sand and the old sand into the blanking hopper 41 according to a certain proportion, and the stirring mechanism stirs and mixes the molding sand in the blanking hopper and finally falls into the bag. Therefore, the new and old sand mixing device avoids the flying of the molding sand due to the obstruction of the cover body 42 during the stirring and mixing; and the molding sand is because collar and seal ring have fixed and sealed the sack when the bagging-off, and the staff need not handheld sack, avoids inhaling the molding sand, ensures staff's health and the operational environment in workshop. It should be noted that, because the bottom of the bag is against the ground, most of the weight of the bag is supported by the ground, and the bag opening fixing mechanism 7 mainly plays a role of assisting the bag to be vertically placed and not to be tilted sideways, so that the bag opening fixing mechanism cannot be damaged by the weight of the bagged bag.

Specifically, referring to fig. 1 and 3, the rod 71 is rotatably connected to the rod 45. Here, the strut is pivotally connected to the middle of the link for ease of installation. The pressing mechanism 72 comprises a guide block 72.1, a fixture block 72.2 and a hand screw 72.3, wherein a guide groove 72.4 is vertically formed in the guide block 72.1, and the fixture block 72.2 can vertically slide along the guide groove 72.4; the bottom of the guide block 72.1 is provided with a threaded hole (not visible in the figure) communicated with the guide groove, and the hand-screwed screw 72.3 is screwed into the threaded hole and is pressed against the clamping block 72.2; the side of the mounting ring is provided with a protrusion 75, and the mounting ring 73 is fixedly connected with the latch 72.2 through the protrusion 75. In this embodiment, the sliding grooves 72.5 are disposed on two sides of the fixture block 72.2, the guide grooves are provided with the guide rails 72.6, the sliding grooves 72.5 on two sides of the fixture block 72.2 are slidably sleeved on the corresponding guide rails 72.6, the guide rails 72.6 can guide the movement of the fixture block and also can limit the fixture block 72.2, so that the fixture block 72.2 cannot be separated from the sliding grooves 72.4.

During operation, in order to facilitate the bag opening flanging to be sleeved on the mounting ring 73, the supporting rod 71 is rotated to enable the mounting ring to move out of the position opposite to the sealing ring; after the bag is sleeved, the support rod 71 is rotated to enable the mounting ring to be located at the position opposite to the sealing ring 44 and ensure that the edges of the mounting ring 73 and the sealing ring 44 are aligned, then the hand-screwed screw 72.3 is rotated to push the clamping block to drive the mounting block to vertically move towards the direction of the sealing block, and then the bag opening formed in the mounting ring is clamped between the mounting block 73 and the sealing block 44, so that the bag opening can be fixed, and the sand mullion can be prevented from leaking from the bag opening when being bagged.

Further, referring to fig. 2, the stirring mechanism 5 includes a bearing seat 51 disposed on the upper surface of the cover, a rotating shaft 52 is disposed in the bearing seat, the bottom of the rotating shaft extends downward into the interior of the blanking hopper and is connected to a stirrer 53, and a driving device 54 for driving the rotating shaft to rotate is disposed on the cover 42. It is visible, rabbling mechanism simple structure uses reliably, can not cause the molding sand to reveal.

Preferably, referring to fig. 2, the driving device 54 includes a motor mounting bracket 54.1, and a driving motor 54.2 disposed on the motor mounting bracket, the main shaft of the driving motor faces downward vertically and is sleeved with a first gear 54.3, the rotating shaft is sleeved with a second gear 54.4, the first gear is engaged with the second gear, and the pitch circle diameter of the first gear is larger than that of the second gear. The motor rotates the transmission through first gear and second gear promptly, drives the pivot and rotates, because gear drive stability is higher, the pivot can rotate steadily.

Further, referring to fig. 4 and 5, the stirrer 53 includes a shaft sleeve 53.1 and a plurality of blades 53.2 fixed on the outer wall of the shaft sleeve; the shaft sleeve is sleeved on the rotating shaft and locked through a locking screw 53.3. The detachable connection between the stirrer and the rotating shaft is convenient due to the arrangement, and the stirrer is convenient to replace even if damaged.

Further, the paddle 53.2 comprises two first paddles 53.2a arranged at the upper part of the shaft sleeve, and two second paddles 53.2b arranged at the lower part of the shaft sleeve; in the projection on the horizontal plane, the included angle between the first paddle and the second paddle is 180 degrees. The arrangement is such that the agitator is simple in structure, and four blades are provided in total in the height direction of the boss, so that the coverage of the agitator in the height direction is improved even if the total number of the blades is small. In addition, because first paddle and second paddle set up relatively for during normal operating, the moment of torsion that the paddle received is balanced, has guaranteed that the agitator rotates steadily, and the mulling is effectual.

For the convenience of manufacturing, the blanking hopper 41 comprises a truncated cone portion 41a and a square cylinder portion 41b which are connected with each other, the sealing ring 44 is arranged at the outer bottom end of the square cylinder portion 41b, and the mounting ring is matched with the shape of the sealing ring. Here, the mounting ring and the seal ring are preferably square rings.

Preferably, referring to fig. 1, the new sand box 2 and the used sand box 3 are both provided with a discharging hopper 81 in communication at the bottom, the discharging hopper is provided with a discharging barrel 82 at the lower end, the discharging barrel is provided with a proportional valve 83, and the discharging barrel 82 is communicated with the cover body 42 through the conduit 6. The worker can accurately control the feeding ratio of new and old sand each time by controlling the proportional valve 83, thereby ensuring that the mixed sand can meet the performance requirement of sand casting.

Preferably, the discharging funnel is provided with transparent glass 9, and the transparent glass is provided with scale marks. Through setting up transparent glass and scale mark, the staff of can being convenient for observes the raw materials surplus in new sand box and the used sand case.

Preferably, the new sand box and the old sand box are respectively connected with a feeding auger (not shown in the figure). Through the feeding flood dragon, workers can correspondingly convey new sand and old sand to the new sand box and the old sand box which are positioned at the high positions on the ground through the feeding flood dragon; the carrying labor intensity of workers is reduced.

It is understood that equivalent substitutions or changes can be made by those skilled in the art according to the technical solution of the present invention and the inventive concept thereof, and all such changes or substitutions shall fall within the scope of the present invention.

Claims

1. A new sand and old sand mixing device for casting comprises a frame, a new sand box and an old sand box which are arranged on the frame, and is characterized in that a sand mixing device is arranged below the new sand box and the old sand box, the sand mixing device comprises a blanking hopper which is vertically arranged, a cover body which is arranged on the upper side of the blanking hopper and a plurality of support legs which are used for supporting the blanking hopper, a stirring mechanism which is used for stirring molding sand in the blanking hopper is arranged on the cover body, and the new sand box and the old sand box are respectively connected with the cover body through guide pipes; the bottom of blanking fill is provided with a sealing ring, is located and is provided with a connecting rod between two stabilizer blades of arbitrary sand box below, be provided with a sack fixed establishment on the connecting rod, sack fixed establishment is including branch, hold-down mechanism and collar, the one end and the connecting rod of branch are connected, are provided with hold-down mechanism on the other end, hold-down mechanism is used for driving the collar and removes along vertical direction, makes the collar support and presses on the sealing ring.

2. The new and old sand mixing device for casting according to claim 1, wherein the strut is rotatably connected with a connecting rod, the compressing mechanism comprises a guide block, a clamping block and a hand screw, a guide groove is vertically formed on the guide block, and the clamping block can vertically slide along the guide groove; the bottom of the guide block is provided with a threaded hole communicated with the guide groove, and the hand-screwed screw is screwed into the threaded hole and is pressed against the fixture block; the side part of the mounting ring is provided with a bulge, and the mounting ring is fixedly connected with the clamping block through the bulge.

3. The new and used sand mixing device for casting according to claim 1, wherein the stirring mechanism comprises a bearing seat arranged on the upper surface of the cover body, a rotating shaft is arranged in the bearing seat, the bottom of the rotating shaft extends downwards into the interior of the blanking hopper and is connected with a stirrer, and a driving device for driving the rotating shaft to rotate is further arranged on the cover body.

4. The new and used sand mixing device for casting according to claim 3, wherein the driving device comprises a motor mounting frame, and a driving motor arranged on the motor mounting frame, a main shaft of the driving motor faces downwards vertically and is sleeved with a first gear, a second gear is sleeved on the rotating shaft, the first gear is meshed with the second gear, and the pitch circle diameter of the first gear is larger than that of the second gear.

5. The new and used foundry sand mixing apparatus as set forth in claim 3, wherein said agitator comprises a hub and a plurality of paddles fixed to an outer wall of the hub; the shaft sleeve is sleeved on the rotating shaft and locked by the locking screw.

6. The new and used sand mixing device for casting according to claim 5, wherein the paddles comprise two first paddles disposed at an upper portion of the shaft sleeve, and two second paddles disposed at a lower portion of the shaft sleeve; in the projection on the horizontal plane, the included angle between the first paddle and the second paddle is 180 degrees.

7. The new and used sand mixing device for casting according to claim 1, wherein the drop hopper comprises a truncated cone portion and a square cylinder portion which are connected with each other, the sealing ring is arranged at the outer bottom end of the square cylinder portion, and the mounting ring is matched with the shape of the sealing ring.

8. The new and old sand mixing device for casting according to claim 1, wherein the bottom of the new sand box and the bottom of the old sand box are both communicated with a discharge hopper, the lower end of the discharge hopper is provided with a discharge barrel, the discharge barrel is provided with a proportional valve, and the discharge barrel is communicated with the cover body through the guide pipe.

9. The new and old sand mixing device for casting of claim 8, wherein the discharging funnel is provided with transparent glass, and the transparent glass is provided with scale marks.

10. The new and used sand mixing device for casting according to claim 1, wherein the new sand box and the used sand box are respectively connected with a feeding auger.