CN215998570U - Automatic opening and closing device of continuous sand mixer - Google Patents

Abstract

The utility model relates to the field of sand mixing equipment, and discloses an automatic opening and closing device of a continuous sand mixer, which comprises a fixed frame and an openable and closable casing which are arranged on a spiral conveyor on the sand mixer, wherein the casing comprises a fixed casing fixed on the frame and a rotary casing rotatably connected with the frame, and the fixed casing and the rotary casing are mutually hinged; a clamping hook is arranged on the fixed casing, one end of the clamping hook is rotationally connected with a rotating buckle, a fixed buckle is fixedly connected on the rotating casing, and a cam transmission mechanism for enabling the rotating buckle and the rotating casing to rotate is arranged on one side of the fixed casing; the cam mechanism comprises a disc cam rotationally connected with the rack, a first driven piece and a second driven piece, the first driven piece and the second driven piece are slidably connected with the rack, the first driven piece and the second driven piece are respectively positioned at two ends of the disc cam and are in contact with the disc cam, the first driven piece is provided with a first transmission device and a transmission rotation buckle, the second driven piece is provided with a second transmission device and a transmission rotation shell, and the rack is provided with a driving device of the disc cam. The utility model has the advantages of automatic opening and closing screw conveyor casing.

Description

Automatic opening and closing device of continuous sand mixer

Technical Field

The utility model relates to a sand mixing equipment technical field, in particular to automatic device that opens and shuts of continuous type roller mill.

Background

The continuous sand mixer is a sand mixer capable of continuously feeding and discharging materials, is commonly called a screw conveyor, is used for molding clay sand in casting production, has no limitation on usable time, and is usually used for mixing sand by a roller type intermittent sand mixer.

When the continuous sand mixer cleans the sand mixing residues in the spiral conveyor, the hasp on the conveyor shell needs to be opened manually, then the handrail on the shell is held to be opened slowly, but in the process, the residues are easy to fly out of the opened shell, constructors can suck a small amount of harmful substances, and the heavy shell is closed after cleaning is finished, so that time and labor are wasted, the situation that the shells are difficult to buckle is caused, and the use efficiency of the sand mixer is greatly reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an automatic device that opens and shuts of continuous type roller mill has the automatic effect of casing that opens and shuts.

The above technical purpose of the present invention can be achieved by the following technical solutions: an automatic opening and closing device of a continuous sand mixer comprises the continuous sand mixer, wherein a spiral conveyor is arranged on the continuous sand mixer, a fixed rack and a casing capable of being opened and closed are arranged on the spiral conveyor, the casing comprises a fixed casing and a rotating casing which are hinged with each other, the fixed casing is fixed on the rack, and the rotating casing is rotationally connected with the rack; a clamping hook is fixedly connected to the fixed casing, one end of the clamping hook is rotatably connected with a rotating buckle, and a fixed buckle is fixedly connected to the rotating casing; a cam transmission mechanism which enables the rotating buckle and the rotating shell to rotate is arranged on one side of the fixed shell, the cam mechanism comprises a disc cam which is connected with the rack in a rotating mode, a first driven piece and a second driven piece which are connected with the rack in a sliding mode, the first driven piece and the second driven piece are respectively located at two ends of the disc cam, and the end portions of the first driven piece and the second driven piece are in contact with the disc cam; one end, far away from the disc cam, of the first driven piece is provided with a first transmission device for transmitting the rotating buckle, one end, far away from the disc cam, of the second driven piece is provided with a second transmission device for transmitting the rotating shell, and the first transmission device and the second transmission device are respectively positioned on two sides of the disc cam; and the frame is provided with a driving device for driving the disc cam to rotate.

By adopting the technical scheme, when the spiral conveyor of the continuous sand mixer needs to be opened for cleaning, the driving device drives the disc-shaped cam to rotate, the first driven piece and the second driven piece which are in contact with the disc-shaped cam can slide up and down in a clearance mode on the rack along with the rotation of the first driven piece and the second driven piece, the first driven piece transmits the sliding process to the rotating buckle on the fixed machine shell hook in a torque mode through the first transmission device, and the rotating buckle rotates in different directions to fix the fixed buckle on the rotating machine shell in the hook or release the fixed buckle; the second driven part transmits the sliding process to the rotating casing in a torque mode through the second transmission device, the second driven part and the fixed casing are connected and separated under the condition of being hinged with the fixed casing, the purpose of opening and closing the casing is achieved, the two driven parts share one disc-shaped cam, the two transmission devices are located on two sides of the disc-shaped cam and do not influence each other, therefore, the rotating buckle and the rotating casing work in a clearance mode, and a certain circulation process is achieved: when the shell is opened for cleaning, the rotating buckle starts to rotate, but the rotating shell is still, and when the rotating buckle loosens the fixed buckle, the rotating shell opens the shell in the opposite direction; when the casing closed, it is motionless to rotate the buckle, rotates the casing and begins to rotate toward closing the direction, closes the back completely until rotating the casing, rotates the buckle and begins to rotate toward opposite direction and detain the fixed buckle to the pothook in, makes whole casing be in the closed state of locking, guarantees mechanical function.

The utility model discloses a further set up to: the first driven piece comprises a first push rod which is connected with the rack in a sliding mode, a first rotatable roller is arranged at one end of the first push rod, the first roller is in contact with the disc cam, a first spring is sleeved on the first push rod, one end of the first spring is fixedly connected to the rack, and the other end of the first spring is fixedly connected to the first push rod.

By adopting the technical scheme, when the disc cam rotates, the first roller rotates and moves up and down in a reciprocating manner under the contact with the disc cam along with the change of the contour line of the cam, and the first push rod on the first roller can slide up and down on the rack. The spring on the first push rod clings the first roller to the disc-shaped cam, so that the first roller completes the track motion on the cam.

The utility model discloses a further set up to: the driven piece comprises a second push rod, two ends of the second push rod are provided with a second rotatable roller, the second roller is in contact with the disc cam, the second push rod is sleeved with a second spring, one end of the second spring is fixedly connected to the rack, and the other end of the second spring is fixedly connected to the first push rod.

By adopting the technical scheme, when the disc cam rotates, the first roller rotates and moves up and down in a reciprocating manner under the contact with the disc cam along with the change of the contour line of the cam, and the first push rod on the first roller can slide up and down on the rack. A spring on the first push rod tightly presses the first roller on the disc cam under the pressure of the frame, so that the first roller completes the track motion on the disc cam.

The utility model discloses a further set up to: the second driven part comprises a second push rod, one end of the second push rod is provided with a second rotatable roller, the second roller is in contact with the disc cam, the second push rod is sleeved with a second spring, one end of the second spring is fixedly connected to the frame, and the other end of the second spring is fixedly connected to the second push rod.

By adopting the technical scheme, when the disc cam rotates, the second roller rotates and moves up and down in a reciprocating manner under the contact with the disc cam along with the change of the contour line of the cam, and the second push rod on the second roller can slide up and down on the rack. And a second spring on the second push rod clings the second roller to the disc cam under the pressure of the frame, so that the second roller completes the track motion on the disc cam.

The utility model discloses a further set up to: the first transmission device comprises a first rack fixedly connected to the first push rod, a first rotating gear is fixedly sleeved at the joint of the rotating buckle and the clamping hook, and the first rack is meshed with the first rotating gear.

Through adopting above-mentioned technical scheme, when the push rod upwards moves, rack one also upwards drives a rotation gear and rotates, and rotation gear drives the direction rotation of rotating the buckle to fastening fixed buckle, just loosens fixed buckle direction otherwise and rotates.

The utility model discloses a further set up to: the second transmission device comprises a second rack fixedly connected to the second push rod, a second rotating gear is fixedly sleeved at the hinged position of the rotating machine shell, and the second rotating gear is meshed with the second rack.

By adopting the technical scheme. When the second push rod moves upwards, the second rack belt also drives the second rotating gear to rotate upwards, the second rotating gear drives the rotating casing to rotate towards the direction of closing the casing, and otherwise, the casing is opened to rotate.

The utility model discloses a further set up to: the driving device comprises a motor fixed on the rack, the output end of the motor is connected with a worm gear reducer, and the output end of the worm gear reducer is fixedly connected with the disc cam in an inserting mode.

Through adopting above-mentioned technical scheme, the motor passes through worm gear reduction gear, and transmission torque gives the disc cam, and worm gear reduction gear not only greatly reduces the original speed of motor, still plays the effect of auto-lock, prevents that the disc cam from rotating under the pressure of push rod one and push rod two by oneself.

The utility model has the advantages that: through this mechanical structure, realized the automation of auger delivery device casing and opened and shut, alleviateed the trouble that the constructor was manually opened and shut at clean in-process, avoided the incomplete error of casing closure that artificially leads to simultaneously, greatly improved continuous roller mill's efficiency. The automatic process also makes the constructor need not be too close to the job site that has the raise dust, guarantees constructor safety.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of the present embodiment;

FIG. 2 is a schematic structural view of a cam gear mechanism of the present embodiment;

FIG. 3 is a schematic structural diagram of a first driven member and a second driven member in the present embodiment;

fig. 4 is a schematic structural diagram of the first transmission device and the second transmission device of the present embodiment.

In the figure, 1, a continuous sand mixer; 2. a screw conveyor; 3. a frame; 4. a housing; 41. fixing the shell; 411. a hook; 412. rotating the buckle; 42. rotating the housing; 421. fixing the buckle; 5. a cam drive mechanism; 51. a disc cam; 52. a first driven part; 521. a first push rod; 522. a first roller; 523. a first spring; 53. a driven part II; 531. a second push rod; 532. a second roller; 533. a second spring; 6. a first transmission device; 61. a first rack; 62. rotating the first gear; 7. a second transmission device; 71. a second rack; 72. rotating a second gear; 8. a drive device; 81. a motor; 82. worm gear reducer.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the specific embodiments. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

A continuous sand mixer comprises a continuous sand mixer 1 as shown in figures 1, 2 and 3, wherein a spiral conveyor 2 is arranged on the continuous sand mixer 1, a fixed frame 3 and a casing 4 capable of being opened and closed are arranged on the spiral conveyor 2, the casing 4 comprises a pair of fixed casing 41 and a rotating casing 42 which are hinged with each other, the fixed casing 41 is fixed on the frame 3, and the rotating casing 42 rotates to form the state that the casing 4 can be opened and closed; a hook 411 is fixedly connected to the fixed housing 41, one end of the hook 411 is rotatably connected to a rotating buckle 412, a fixed buckle 421 is fixedly connected to the rotating housing 42, the fixed buckle 421 is fastened by the hook 411 and the rotating buckle 412, and the rotating state of the rotating housing 42 is limited.

The fixed housing 41 is provided with a cam transmission mechanism 5 which enables the rotating buckle 412 and the rotating housing 42 to rotate at one side, the cam mechanism comprises a disc cam 51 which is rotatably connected with the frame 3, a first follower 52 and a second follower 53 which are slidably connected with the frame 3, the first follower 52 and the second follower 53 are respectively positioned at two ends of the disc cam 51, the first follower 52 comprises a first push rod 521 which is slidably connected with the frame 3, the end of the first push rod 521 is provided with a first rotating roller 522, the first roller 522 is mutually contacted with the disc cam 51, the first push rod 521 is sleeved with a first spring 523, one end of the first spring 523 is fixedly connected with the frame 3, the other end of the first spring 523 is fixedly connected with the first push rod 521, when the disc cam 51 rotates, the first roller 522 is contacted with the disc cam 51, and rotates and reciprocates up and down along with the change of the contour line of the cam, the first push rod 521 on the first roller 522 can slide up and down on the frame 3, the first spring 523 on the first push rod 521 clings the first roller 522 to the disc cam 51 to make the first roller complete the track motion on the cam, and because the first end 521 of the first push rod 521 is provided with the first transmission device 6 for transmitting the rotating buckle 412, the up-and-down sliding process of the first push rod 521 is transmitted to the rotating buckle 412 on the hook 411 of the fixed case 41 in a torque mode through the first transmission device 6.

The second driven member 53 comprises a second push rod 531 slidably connected to the frame 3, a second rotatable roller 532 is arranged at one end of the second push rod 531, the second roller 532 is in contact with the disc cam 51, a second spring 533 is sleeved on the second push rod 531, one end of the second spring 533 is fixedly connected to the frame 3, and the other end of the second spring 533 is fixedly connected to the first push rod 521. When the disc cam 51 rotates, the second roller 532 rotates and translates up and down in a reciprocating manner under the contact with the disc cam 51 and along with the change of the contour line of the cam, the second push rod 531 on the second roller 532 slides up and down on the rack 3, the second spring 533 on the second push rod 531 tightly presses the second roller 532 on the disc cam 51 under the pressure of the rack 3, so that the second roller 532 completes the track motion on the disc cam 51, and because one end of the second push rod 531 is provided with the second transmission device 7 for transmitting the rotating shell 42, the up and down sliding process of the second push rod 531 is transmitted to the rotating shell 42 in a torque manner through the second transmission device 7.

Since the two followers share one disc cam 51 and the transmission devices of the two followers are located on both sides of the disc cam, the mutual clearance type work between the rotating buckle 412 and the rotating shell 42 realizes a certain cycle process and a certain cycle operation: when the screw conveyor 2 of the continuous sand mixer 1 needs to be opened for cleaning, the driving device 8 drives the disc-shaped cam 51 to rotate, the roller I522 in the follower I52 rotates and translates downwards along with the change of the contour line of the cam under the contact with the disc-shaped cam 51, the push rod I521 on the roller I522 slides downwards on the rack 3, the rotating buckle 412 is rotated through the transmission device I6, but the rotating shell 42 is in a static state at the moment, when the rotating buckle 412 releases the fixed buckle 421, the roller II 532 in the follower II 53 rotates and translates downwards along with the change of the contour line of the cam under the contact with the disc-shaped cam 51, the push rod II 531 on the roller II 532 slides downwards on the rack 3, and the shell 42 is rotated and opened by the rotation opposite to the rotating buckle 412 through the transmission device II 7; when the housing 4 needs to be closed, similarly, the rotating buckle 412 is not moved at this time, the rotating housing 42 starts to rotate in the closing direction, until the rotating housing 42 is completely closed, the rotating buckle 412 starts to rotate in the direction opposite to the rotating housing 42, and the fixing buckle 421 is fastened into the hook 411, so that the whole housing 4 is in a locked and closed state, and the mechanical operation is ensured.

As shown in fig. 2 and 4, the first transmission device 6 includes a first rack 61 fixedly connected to the first push rod 521, the rotating buckle 412 is fixedly sleeved with a first rotating gear 63 at a connection position with the hook 411, the first rack 61 and the first rotating gear 63 are engaged with each other, when the first push rod 521 moves upwards, the first rack 61 also drives the first rotating gear 63 to rotate upwards, the first rotating gear 63 drives the rotating buckle 412 to rotate in a direction of fastening the fixing buckle 421, and otherwise, the fixing buckle 421 is released to rotate. The second transmission device 7 comprises a second rack 71 fixedly connected to the second push rod 531, a second rotating gear 72 is fixedly sleeved at the hinged position of the second rotating machine shell 42, the second rotating gear 72 is meshed with the second rack 71, when the second push rod 531 moves upwards, the second rack 71 drives the second rotating gear 72 to rotate upwards, the second rotating gear 72 drives the second rotating machine shell 42 to rotate towards the direction of closing the machine shell 4, and otherwise, the second rotating machine shell 4 is opened to rotate.

As shown in fig. 1 and 2, the driving device 8 includes a motor 81 fixed on the frame 3, an output end of the motor 81 is connected to a worm gear reducer 82, an output end of the worm gear reducer 82 is fixedly connected to the disc cam 51, the motor 81 transmits torque to the disc cam 51 through the worm gear reducer 82, and the worm gear reducer 82 not only greatly reduces the original speed of the motor 81, but also plays a self-locking role to prevent the disc cam 51 from rotating under the pressure of springs on the first push rod 521 and the second push rod 531.

Claims (6)

1. The utility model provides an automatic device that opens and shuts of continuous type roller mill, includes continuous roller mill (1), be equipped with screw conveyer (2) on continuous roller mill (1), its characterized in that: the spiral conveyor (2) is provided with a fixed rack (3) and a foldable shell (4), the shell (4) comprises a pair of fixed shell (41) and a rotary shell (42) which are hinged with each other, the fixed shell (41) is fixed on the rack (3), and the rotary shell (42) is rotatably connected with the rack (3); a hook (411) is fixedly connected to the fixed casing (41), one end of the hook (411) is rotatably connected with a rotating buckle (412), and a fixed buckle (421) is fixedly connected to the rotating casing (42); a cam transmission mechanism (5) which enables the rotating buckle (412) and the rotating shell (42) to rotate is arranged on one side of the fixed shell (41), the cam transmission mechanism (5) comprises a disc-shaped cam (51) which is rotatably connected with the rack (3), a first driven piece (52) and a second driven piece (53) which are connected with the rack (3) in a sliding mode, the first driven piece (52) and the second driven piece (53) are respectively positioned at two ends of the disc-shaped cam (51), and the end portions of the first driven piece (52) and the second driven piece (53) are in contact with the disc-shaped cam (51); one end, far away from the disc-shaped cam (51), of the first driven piece (52) is provided with a first transmission device (6) for transmitting the rotating buckle (412), one end, far away from the disc-shaped cam (51), of the second driven piece (53) is provided with a second transmission device (7) for transmitting the rotating shell (42), and the first transmission device (6) and the second transmission device (7) are respectively positioned on two sides of the disc-shaped cam (51); and a driving device (8) for driving the disc cam (51) to rotate is arranged on the frame (3).

2. The automatic opening and closing device of the continuous sand mixer according to claim 1, characterized in that: the first driven part (52) comprises a first push rod (521) which is in sliding connection with the rack (3), a first rotatable roller (522) is arranged at the end of the first push rod (521), the first roller (522) is in mutual contact with the disc cam (51), a first spring (523) is sleeved on the first push rod (521), one end of the first spring (523) is fixedly connected to the rack (3), and the other end of the first spring (523) is fixedly connected to the first push rod (521).

3. The automatic opening and closing device of the continuous sand mixer according to claim 1, characterized in that: the second driven part (53) comprises a second push rod (531) which is slidably connected with the rack (3), one end of the second push rod (531) is provided with a second rotatable roller (532), the second roller (532) and the disc cam (51) are in mutual contact, a second spring (533) is sleeved on the second push rod (531), one end of the second spring (533) is fixedly connected with the rack (3), and the other end of the second spring (533) is fixedly connected with the first push rod (521).

4. The automatic opening and closing device of the continuous sand mixer according to claim 3, characterized in that: the first transmission device (6) comprises a first rack (61) fixedly connected to the first push rod (521), a first rotating gear (63) is fixedly sleeved at the joint of the rotating buckle (412) and the clamping hook (411), and the first rack (61) and the first rotating gear (63) are meshed with each other.

5. The automatic opening and closing device of the continuous sand mixer as claimed in claim 4, wherein: the second transmission device (7) comprises a second rack (71) fixedly connected to the second push rod (531), a second rotating gear (72) is fixedly sleeved at the hinged position of the rotating machine shell (42), and the second rotating gear (72) is meshed with the second rack (71).

6. The automatic opening and closing device of the continuous sand mixer as claimed in claim 5, wherein: the driving device (8) comprises a motor (81) fixed on the rack (3), the output end of the motor (81) is connected with a worm gear reducer (82), and the output end of the worm gear reducer (82) is fixedly connected with the disc cam (51).

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