CN115111924A - Feeding mechanism of stepping furnace - Google Patents

Abstract

The invention relates to the field of industrial furnaces, in particular to a feeding mechanism of a stepping furnace, which comprises a furnace body and two fixed material racks, wherein the two fixed material racks are respectively and fixedly connected to the front side and the rear side of the top of the furnace body, the front inner wall and the rear inner wall of the furnace body are both fixedly connected with guide rails, the left inner wall of the furnace body is connected with one end of a horizontal pushing hydraulic cylinder through a pin shaft, a slide seat capable of sliding left and right is inserted into an inner cavity of the guide rails, the left end of the slide seat is connected with the other end of the horizontal pushing hydraulic cylinder through a pin shaft, the left end and the right end of the front side and the rear side of the slide seat are both fixedly connected with sliding sleeves, and the front end and the rear end of the lower surface of the slide seat are both provided with lifting hydraulic cylinders. The workpiece lifting device has the function of early warning the distance between workpieces, so that the workpieces are reasonably placed, the heating quantity of the workpieces is increased, the heating efficiency is high, the workpieces in different shapes can be stably lifted, the stability of the workpieces during movement is further improved, the workpiece loading and unloading time period is short, the loading and unloading efficiency is high, and the requirement of workpiece heating is met.

Description

Feeding mechanism of stepping furnace

Technical Field

The invention relates to the technical field of industrial furnaces, in particular to a feeding mechanism of a stepping furnace.

Background

The pusher furnace refers to a furnace that periodically pushes the burden or material tray placed on the track into the furnace or out of the furnace by means of a pusher. The workpiece is kept in a relatively static state for a certain time when being heated in the furnace; when the furnace is taken out for quenching, some charging trays are automatically inclined and then the furnace burden is poured into a quenching medium, and some charging trays and the furnace burden enter the quenching medium together for cooling. The furnace has strong adaptability to different heat treatment processes, so that the furnace is convenient for forming a production line and is widely applied to heat treatment procedures such as quenching, normalizing, annealing, tempering, carburizing, nitriding, carbonitriding and the like;

fixed beams are arranged on two sides of the top in the furnace, the movable beams are driven to move through the lifting frame device, and the movable beams move workpieces to be heated to the fixed beams so that the workpieces are heated in the furnace. In order to meet the use requirements, the space in the furnace is large, usually a plurality of workpieces are heated on a fixed beam at the same time, at present, the distance between the workpieces placed on the fixed beam is manually controlled, the visual field is lacked, the temperature in the furnace is high, the distance between the workpieces is not easy to master, the workpieces cannot be placed to the maximum extent, the heating efficiency is low, the shapes of the workpieces are different, the shape of the movable beam cannot be adjusted according to the appearance of the workpieces at present, the workpieces are not stable enough when being dragged to move, the workpieces can only be moved by adopting a mode of reducing the moving speed, the time period for loading and unloading the workpieces is long, the loading and unloading efficiency is low, and the requirement for heating the workpieces is difficult to meet.

Disclosure of Invention

The embodiment of the invention aims to provide a stepping furnace feeding mechanism to solve the problems that the heating quantity of workpieces in a single furnace cannot be maximized and the workpieces are time-consuming and labor-consuming in feeding and discharging in the background technology.

In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:

a feeding mechanism of a stepping furnace comprises a furnace body and two fixed material racks which are respectively and fixedly connected with the front side and the rear side of the top of the furnace body, the front and back inner walls of the furnace body are fixedly connected with guide rails, the left inner wall of the furnace body is connected with one end of a horizontal pushing hydraulic cylinder through a pin shaft, a sliding seat capable of sliding left and right is inserted in the inner cavity of the guide rails, the left end of the sliding seat is connected with the other end of the horizontal pushing hydraulic cylinder through a pin shaft, the left and right ends of the front and back sides of the sliding seat are fixedly connected with sliding sleeves, the front end and the rear end of the lower surface of the sliding seat are respectively provided with a lifting hydraulic cylinder, the inner cavity of the sliding sleeve is inserted with a sliding rod capable of sliding up and down, the two sliding rods are connected through a reinforcing rib, the bottom of strengthening rib is connected with hydraulic cylinder's output, the upper surface central point of slide puts and installs range finding mechanism, two sets of both sides around movable work or material rest is all installed on the top of slide bar.

As a further scheme of the invention: and a limiting block is arranged at the bottom end of the sliding rod.

As a further scheme of the invention: the range finding mechanism is including installing the base that puts at slide upper surface central point, the motor is installed to the right-hand member of base, the one end of screw rod is installed to the output of motor, and the other end of screw rod passes through the bearing with the left inner wall of base and be connected, the outer wall spiro union of screw rod has the movable block, and the movable block pegs graft with base inner chamber looks adaptation, the one end of support is installed on the top of movable block, the photoelectric switch is installed to the other end of support, the distancer is installed on the top right side of base.

As a further scheme of the invention: the support and the range finder are located on the same straight line.

As a further scheme of the invention: the distance measuring instrument and the center line of the movable material rack are on the same straight line.

As a further scheme of the invention: the movable material rack comprises a supporting plate arranged at the top end of a sliding rod, a traction hydraulic cylinder is arranged at the center of the lower surface of the supporting plate, a push-pull plate is arranged at the output end of the traction hydraulic cylinder, the left end and the right end of the push-pull plate are both connected with one end of a connecting rod through a pin shaft, the top end of the supporting plate is fixedly connected with a rack, a first supporting plate is arranged at the top end of the rack, the left end and the right end of the first supporting plate are both connected with a second supporting plate through a pin shaft, and the bottom end of the second supporting plate is connected with the other end of the connecting rod through a pin shaft.

As a further scheme of the invention: the connecting rod is arc-shaped.

Compared with the prior art, the embodiment of the invention has the beneficial effects that:

1. according to the invention, the motor drives the screw to rotate clockwise or anticlockwise, the screw thread rotating force drives the moving block to move leftwards or rightwards, the distance meter detects the moving distance of the support until the distance from the photoelectric switch to the movable material rack is greater than the width of a workpiece, and in the process of transferring the workpiece to the fixed material rack, the distance between the workpieces has an early warning function, so that the workpieces are reasonably placed, the heating quantity of the workpieces is increased, and the heating efficiency is high;

2. the push-pull plate is driven to move upwards or downwards by the traction hydraulic cylinder, so that the connecting rod is driven to pull the second supporting plate to swing upwards or downwards, and the lifting forms of the first supporting plate and the second supporting plate are changed, therefore, workpieces in different shapes can be stably lifted, the stability of the workpieces during moving is improved, the workpiece loading and unloading time period is short, the loading and unloading efficiency is high, and the requirement of workpiece heating is met.

Drawings

FIG. 1 is a front sectional view of the present invention;

FIG. 2 is a top view of the slider of the present invention;

FIG. 3 is a front sectional view of the distance measuring mechanism of the present invention;

fig. 4 is a front view and a cross-sectional view of the movable rack of the present invention.

In the figure: 1-furnace body, 2-fixed material rack, 3-guide rail, 4-horizontal pushing hydraulic cylinder, 5-sliding seat, 6-sliding sleeve, 7-lifting hydraulic cylinder, 8-sliding rod, 9-reinforcing rib, 10-distance measuring mechanism, 11-movable material rack, 101-base, 102-motor, 103-screw rod, 104-moving block, 105-bracket, 106-photoelectric switch, 107-distance measuring instrument, 111-supporting plate, 112-traction hydraulic cylinder, 113-push-pull plate, 114-connecting rod, 115-frame, 116-first supporting plate and 117-second supporting plate.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

Example 1

Referring to fig. 1-2, in the embodiment of the present invention, a feeding mechanism of a stepping furnace comprises a furnace body 1 and two fixed material racks 2, wherein the two fixed material racks 2 are respectively and fixedly connected to the front side and the rear side of the top of the furnace body 1, the fixed material racks 2 are used for storing workpieces to be heated, the front inner wall and the rear inner wall of the furnace body 1 are both fixedly connected with guide rails 3, a slide carriage 5 can transversely slide left and right by means of the guide rails 3, the left inner wall of the furnace body 1 is connected with one end of a horizontal pushing hydraulic cylinder 4 through a pin shaft, the horizontal pushing hydraulic cylinder 4 is a multi-stage hydraulic cylinder and provides traction force for the left and right movement of a slide carriage 55, a slide carriage 5 capable of sliding left and right is inserted into an inner cavity of the guide rails 3, the left end of the slide carriage 5 is connected with the other end of the horizontal pushing hydraulic cylinder 4 through a pin shaft, the left and right ends of the front side and rear side of the slide carriage 5 are both fixedly connected with slide sleeves 6, and rear ends of the front surface of the slide carriage 6 are both provided with lifting hydraulic cylinders 7, through 7 drive activity work or material rest 11 of hydraulic cylinder and reciprocate, the inner chamber of sliding sleeve 6 is pegged graft and is had gliding slide bar 8 from top to bottom, promote the stability that activity work or material rest 11 reciprocated through sliding sleeve 6 and slide bar 8's cooperation, connect through strengthening rib 9 between two slide bars 8, the bottom of strengthening rib 9 is connected with hydraulic cylinder 7's output, ranging mechanism 10 is installed to the upper surface central point of slide 5, movable work or material rest 11 is all installed on the top of the two sets of slide bars 8 of both sides around.

Furthermore, the bottom end of the slide bar 8 is provided with a limiting block to prevent the slide bar 8 from moving upwards to exceed the limit.

Further, as shown in fig. 3, the distance measuring mechanism 10 includes a base 101 installed at a central position of the upper surface of the slide 5, a motor 102 installed at a right end of the base 101, for driving the screw 103 to rotate clockwise or counterclockwise, the output end of the motor 102 is provided with one end of the screw 103, and the other end of the screw 103 is connected with the left inner wall of the base 101 through a bearing, the screw thread rotating force of the screw 103 can drive the moving block 104 to move leftwards or rightwards, the moving block 104 is screwed on the outer wall of the screw 103, and the moving block 104 is inserted in the inner cavity of the base 101 to prevent the moving block 104 from rotating, one end of a bracket 105 is installed at the top end of the moving block 104, a photoelectric switch 106 is installed at the other end of the bracket 105, when the photoelectric switch 106 is shielded by a workpiece, the photoelectric switch 106 is triggered to play a role in early warning the distance between workpieces, and a distance meter 107 is installed on the right side of the top end of the base 101.

Further, the support 105 is aligned with the distance meter 107, so that the distance meter 107 measures the moving distance of the support 105.

Furthermore, the distance measuring instrument 107 and the center line of the movable rack 11 are on the same straight line, and the distance measuring instrument 107 measures the distance from the movable rack 11 to the support 105, so that the reasonable placing distance between the workpieces can be calculated conveniently.

Further, as shown in fig. 4, the movable material frame 11 includes a support plate 111 installed at the top end of the sliding rod 8, a traction hydraulic cylinder 112 is installed at the center of the lower surface of the support plate 111 and is used for driving the push-pull plate 113 to move up and down, the push-pull plate 113 is installed at the output end of the traction hydraulic cylinder 112, when the push-pull plate 113 moves up and down, the connecting rod 114 can pull the second support plate 117 to swing up and down, so as to change the angle between the first support plate 116 and the second support plate 117, the left end and the right end of the push-pull plate 113 are both connected with one end of the connecting rod 114 through a pin shaft, the top end of the support plate 111 is fixedly connected with a machine frame 115, the top end of the machine frame 115 is installed with a first support plate 116, the left end and the right end of the first support plate 116 are both connected with the second support plate 117 through a pin shaft, and the bottom end of the second support plate 117 is connected with the other end of the connecting rod 114 through a pin shaft.

Further, the shape of the connecting rod 114 is arc-shaped, so that when the connecting rod 114 pushes the second support plate 117 to swing upwards, the connecting rod 114 is prevented from colliding with the first support plate 116 to block the movement of the second support plate 117.

Principle of operation

Firstly, a workpiece conveying roller is positioned at the top end of the right side of a furnace body 1, a screw 103 is driven to rotate clockwise or anticlockwise through a motor 102, the thread rotating force of the screw 103 drives a moving block 104 to move leftwards or rightwards, a support 105 drives a photoelectric switch 106 to move leftwards and rightwards, a distance meter 107 measures the distance of the support 105, the distance is just larger than the width or diameter of one workpiece according to the width or diameter of the workpiece, and the adjustment of workpiece distance early warning is realized;

step two, when the movable rack 11 needs to be controlled to move transversely, the sliding seat 5 can slide leftwards or rightwards along the guide rail 3 through the driving of the horizontal pushing hydraulic cylinder 4, the transverse position of the movable rack 11 is changed, when the movable rack 11 needs to be controlled to move longitudinally, the lifting hydraulic cylinder 7 can drive the movable rack 11 to ascend or descend under the matching of the sliding sleeve 6 and the sliding rod 8, therefore, the movable rack 11 moves to the position right below the conveying roller to support the workpiece conveyed by the conveying roller and then is conveyed into the furnace body 1 through the left side, after the movable rack 11 descends, the workpiece falls on the fixed rack 2, when the first workpiece is put in, along with the continuous adding of the second workpiece and the third workpiece, the photoelectric switch 106 is triggered by the blocking of the left workpiece, the workpiece interval is sent out early warning, the horizontal pushing hydraulic cylinder 4 stops working, the movable rack 11 does not move transversely, and the lifting hydraulic cylinder 7 enables the movable rack 11 to descend, the workpieces fall on the fixed material rack 2, so that the distance between the workpieces is regulated, the workpieces are reasonably placed on the fixed material rack 2, and the workpiece placing amount is increased;

and step three, when the lifting stability is required to be improved according to the shape of the workpiece, the pull-push plate 113 is driven to move upwards or downwards by the traction hydraulic cylinder 112, so that the connecting rod 114 can pull the second supporting plate 117 to swing upwards or downwards, the angle between the first supporting plate 116 and the second supporting plate 117 is changed, the second supporting plate 117 plays a limiting role, bar workpieces with different diameters can be lifted conveniently, the contact area between the first supporting plate 116 and the second supporting plate 117 is increased when the first supporting plate 116 and the second supporting plate 117 are flattened, the lifting stability of the plate workpieces is improved, therefore, the lifting form can be changed for workpieces with different shapes, and the workpiece stability during moving is high.

The above are only preferred embodiments of the present invention, and it should be noted that, for those skilled in the art, it can make several changes and modifications without departing from the concept of the present invention, and these should also be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims (7)

1. The utility model provides a step-by-step furnace feed mechanism, includes furnace body (1) and two fixed work or material rest (2), both sides around the top of furnace body (1), its characterized in that are fixed connection respectively to two fixed work or material rest (2): the furnace comprises a furnace body (1), a guide rail (3) is fixedly connected with the front inner wall and the rear inner wall of the furnace body (1), the left inner wall of the furnace body (1) is connected with one end of a horizontal pushing hydraulic cylinder (4) through a pin shaft, a slide seat (5) capable of sliding left and right is inserted into an inner cavity of the guide rail (3), the left end of the slide seat (5) is connected with the other end of the horizontal pushing hydraulic cylinder (4) through a pin shaft, slide sleeves (6) are fixedly connected with the left end and the right end of the front side and the rear side of the slide seat (5), lifting hydraulic cylinders (7) are installed at the front end and the rear end of the lower surface of the slide seat (6), slide rods (8) capable of sliding up and down are inserted into an inner cavity of the slide sleeve (6), the two slide rods (8) are connected through reinforcing ribs (9), the bottom ends of the reinforcing ribs (9) are connected with the output end of the lifting hydraulic cylinder (7), and a distance measuring mechanism (10) is installed at the center position of the upper surface of the slide seat (5), the top ends of the two groups of the sliding rods (8) on the front side and the rear side are respectively provided with a movable material rack (11).

2. The stepping furnace feeding mechanism according to claim 1, wherein: and a limiting block is arranged at the bottom end of the sliding rod (8).

3. The stepping furnace feeding mechanism according to claim 1, wherein: the distance measuring mechanism (10) comprises a base (101) installed at the center of the upper surface of a sliding seat (5), a motor (102) is installed at the right end of the base (101), one end of a screw rod (103) is installed at the output end of the motor (102), the other end of the screw rod (103) is connected with the left inner wall of the base (101) through a bearing, a moving block (104) is connected to the outer wall of the screw rod (103) in a threaded mode, the moving block (104) is connected with the inner cavity of the base (101) in an adaptive mode in a plug-in mode, one end of a support (105) is installed at the top end of the moving block (104), a photoelectric switch (106) is installed at the other end of the support (105), and a distance measuring instrument (107) is installed on the right side of the top end of the base (101).

4. The stepping furnace feeding mechanism according to claim 1, wherein: the support (105) and the range finder (107) are positioned on the same straight line.

5. The stepping furnace feeding mechanism according to claim 1, wherein: the distance measuring instrument (107) and the center line of the movable material rack (11) are on the same straight line.

6. The stepping furnace feeding mechanism according to claim 1, wherein: the movable material rack (11) comprises a supporting plate (111) arranged on the top end of a sliding rod (8), a traction hydraulic cylinder (112) is arranged at the center of the lower surface of the supporting plate (111), a push-pull plate (113) is arranged at the output end of the traction hydraulic cylinder (112), the left end and the right end of the push-pull plate (113) are connected with one end of a connecting rod (114) through pin shafts, the top end of the supporting plate (111) is fixedly connected with a rack (115), a first supporting plate (116) is arranged on the top end of the rack (115), the left end and the right end of the first supporting plate (116) are connected with a second supporting plate (117) through pin shafts, and the bottom end of the second supporting plate (117) is connected with the other end of the connecting rod (114) through pin shafts.

7. The stepping furnace feeding mechanism according to claim 1, wherein: the connecting rod (114) is arc-shaped.

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