CN109290409B - A corrugated sheet forming machine - Google Patents

Abstract

The invention relates to the technical field of transformer processing equipment, in particular to a corrugated sheet forming machine, which includes a frame, a front mold mechanism, a rear mold mechanism and an upper jack mechanism; the upper jack mechanism includes an upper jack mechanism bracket, a crank, a connecting rod, a top plate, Slideway and horizontal crank swing mechanism; there are two cranks, one end of the crank is pivotally connected with the support of the upper mechanism, the other end of the crank is pivotally connected with the connecting rod through a pivot, and the pivot point of the two cranks and the support of the upper mechanism is located at On the same vertical line, the upper mechanism bracket, crank and connecting rod form a parallelogram mechanism; the slideway is fixed on the frame, and the trajectory of the slideway is a quarter arc, and the center of the arc is located at the front mold mechanism The radius of the arc is equal to the length of the crank; the horizontal crank swing mechanism can make the crank in the horizontal state swing upward. The corrugated sheet bending machine of the present invention can guarantee the quality of the corrugated sheet, and has the advantages of simple structure, low cost, extremely low failure rate, and stable and reliable operation.

Description

A corrugated sheet forming machine

technical field

The invention relates to the technical field of transformer processing equipment, in particular to a corrugated sheet forming machine.

Background technique

Oil-immersed transformer is one of the important equipment in the power supply and distribution system of industrial and mining enterprises and civil buildings. It is mainly composed of iron core, winding and oil tank. The oil tank is used to dissipate heat from the iron core and windings. The structure of the oil tank is divided into tubular oil tank, flat oil tank and corrugated oil tank. At present, the best heat dissipation effect and the most widely used is the corrugated oil tank, which is made of corrugated sheets by stamping. Then the corrugated sheet is welded.

The invention patent with the application number of 201610168768.9 discloses a corrugated sheet forming machine, which includes a machine base. The machine base is provided with a front mold mechanism, an upper mold mechanism and a rear mold mechanism in sequence from front to back. The upper mold mechanism and the rear mold mechanism can be The sliding one is arranged on the machine base, and the distance between the upper top plate and the front mold mechanism and the rear mold mechanism is equal. The back mold mechanism is connected with the top mechanism through a linkage, so that the stroke of the back mold mechanism is twice that of the top mechanism. The top-up mechanism includes a slide plate, a fifth hydraulic cylinder and a top plate, and the fifth hydraulic cylinder is used to drive the top plate to move vertically. When working, the front mold mechanism and the rear mold mechanism respectively clamp the two ends of the sheet to be processed, and the rear mold mechanism and the upper top mechanism move to the front mold mechanism. The distance of the mechanism is always equal, at the same time, the fifth hydraulic cylinder pushes the top plate to lift up the sheet and bend the sheet. The disadvantages of this corrugated sheet forming machine are: (1) The bending force of the sheet is mainly exerted by the front mold mechanism and the rear mold mechanism, and the function of the top plate is to serve as a model at the middle position of the sheet to Position the bending point during the bending process. Since the movement track of the bending point is a curve, the corrugated sheet forming machine can make the horizontal position of the top plate the same as the bending point of the sheet through the linkage device, but in order to keep the upper end of the top plate The contact of the bending point must rely on the thrust of the fifth hydraulic cylinder to press the top plate on the sheet, which can easily cause the sheet to be deformed due to stretching and affect the quality of the corrugated sheet. (2) The structure of the hydraulic system is complex and the cost is high , The failure rate is high, resulting in a high shutdown rate and unstable work. For example, when the throttle valve of the hydraulic system is damaged, the top speed of the top plate slows down, and cannot keep up with the horizontal movement speed of the front die mechanism, and cannot keep up with the sheet. The bending points are in contact, resulting in irregular bending of the sheet.

Contents of the invention

The object of the present invention is to solve the above-mentioned deficiencies in the prior art, and to provide a corrugated sheet forming machine. By setting the top mechanism linked with the rear mold mechanism, the trajectory of the top of the top plate is the same as the bending point of the sheet, preventing the sheet from The material is stretched and deformed by the upper force.

The technical problem to be solved by the present invention is achieved by the following technical solutions: a corrugated sheet forming machine, including a frame, a front mold mechanism, a rear mold mechanism and an upper top mechanism, the front mold mechanism is fixedly installed on the frame, and the The rear mold mechanism can be horizontally slidably installed on the frame; the upper jack mechanism includes an upper jack mechanism bracket, a crank, a connecting rod, a top plate, a slideway and a horizontal crank swing mechanism; the upper jack mechanism bracket and the rear mold mechanism Fixedly connected, the crank is provided with two, one end of the crank is pivotally connected with the support of the upper mechanism, the other end of the crank is pivotally connected with the connecting rod through a pivot, and the two cranks are connected with the support of the upper mechanism. The pivot points are located on the same vertical line, the upper mechanism support, the crank and the connecting rod form a parallelogram mechanism, and the top plate is fixedly connected with the connecting rod; the slideway is fixedly arranged on the frame, and the The track is a quarter arc, the center of the arc is located directly below the front die mechanism, and the radius of the arc is equal to the length of the crank; When the rear lower end of the crank is in a horizontal state; the horizontal crank swing mechanism can make the crank in the horizontal state swing upwards.

The technical solution of the present invention also includes: the horizontal crank swing mechanism includes a roller and a roller driving motor, the roller is installed on the frame, and when the crank is in a horizontal state, the pivot is in contact with the roller. When the rear mold mechanism starts to move forward, the roller drive motor swings up a small angle through the roller drive pivot to make the crank cross the dead point, and then the forward force of the upper mechanism bracket can generate torque to the crank.

The technical solution of the present invention also includes: a friction roller is fixed on the pivot, and when the crank is in a horizontal state, the pivot is in contact with the friction roller. By adopting the technical scheme, the friction roller can increase the force between the pivot shaft and the roller to prevent slipping.

The technical solution of the present invention also includes: the horizontal crank swing mechanism includes a jacking pin, a spring and an electromagnet, the frame is provided with a jacking pin hole, and the jacking pin hole is located at the rear lower end of the slideway, and the jacking pin The spring can be vertically slidably installed in the ejector pin hole, the spring is located in the ejector pin hole and produces a vertical upward force on the ejector pin, and the electromagnet is installed on the frame and used for attracting and releasing the ejector pin. When the rear mold mechanism starts to move forward, the electromagnet releases the ejector pin, and under the action of the spring, the ejector pin pushes the pivot upward, making the crank swing a small angle to cross the dead point, and then the upper ejection mechanism bracket moves forward The force can generate torque on the crank.

The technical solution of the present invention also includes: the pivot is provided with a roller matching the slideway. By adopting the technical scheme, the friction force between the pivot shaft and the slideway can be reduced, and the wear of the pivot shaft and the slideway can be prevented.

The technical scheme of the present invention also has: the front mold mechanism includes a front mold gantry, a front mold and a front mold driving hydraulic cylinder, the front mold gantry is fixedly installed on the frame, and the front mold driving hydraulic cylinder is installed on the The front mold gantry is used to drive the front mold to move vertically; the rear mold mechanism includes a rear mold gantry, a rear mold, a rear mold driving hydraulic cylinder and a horizontal hydraulic cylinder, and the rear mold gantry is slidably installed on the machine On the frame, the horizontal hydraulic cylinder is installed on the frame and is used to drive the rear mold gantry to move horizontally, and the rear mold driving hydraulic cylinder is installed on the rear mold gantry and is used to drive the rear mold to move vertically.

The technical solution of the present invention also includes a feeding mechanism, the feeding mechanism is arranged behind the rear mold mechanism, and the feeding mechanism includes a roller table, a feed roller bracket, a feed roller, and a feed roller drive motor and pressing the hydraulic cylinder, the roller table is installed on the frame, the feed roller bracket is vertically slidable installed on the frame and is located above the roller table, and the feed roller is installed on the feed roller bracket Above, the feed roller driving motor is installed on the feed roller bracket and connected with the feed roller, and the pressing hydraulic cylinder is installed on the frame and connected with the feed roller bracket. The pressing hydraulic cylinder drives the feed roller to press the sheet on the roller table, and the feed roller drives the motor to drive the feed roller to rotate to realize the feeding of the sheet.

Compared with the prior art, the beneficial effects of the corrugated sheet forming machine of the present invention are as follows: (1) The upper top mechanism and the rear mold mechanism are linked to keep the upper end of the top plate in contact with the bending point of the sheet. Therefore, the top plate can be used as a sheet. The middle profiling when the material is bent, will not produce excessive force on the sheet, prevent the sheet from stretching and deformation, and ensure the quality of the corrugated sheet; (2) Compared with the prior art that uses a hydraulic system to drive the top plate Mode, the lifting mechanism of the present invention has the advantages of simple structure, low cost, extremely low failure rate, and stable and reliable operation.

Description of drawings

Fig. 1 is a front view (crank horizontal state) of the corrugated sheet forming machine of the first embodiment.

Fig. 2 is a partial enlarged view of part A in Fig. 1 .

Fig. 3 is a top view of the corrugated sheet forming machine of Embodiment 1 (the crank is in a horizontal state).

Fig. 4 is a front view of the corrugated sheet forming machine of Embodiment 1 (the state where the crank is at an angle of 45°).

FIG. 5 is a partially enlarged view of part B in FIG. 4 .

Fig. 6 is a schematic structural view of the jacking mechanism of the first embodiment.

Fig. 7 is a front view (crank horizontal state) of the corrugated sheet forming machine of the second embodiment.

FIG. 8 is a partially enlarged view of part C in FIG. 7 .

In the figure: 1, frame, 2, upper mechanism bracket, 3, crank, 4, connecting rod, 5, top plate, 6, slideway, 7, pivot, 8, roller, 9, roller driving motor, 10, Friction roller, 11, ejector pin, 12, spring, 13, electromagnet, 14, roller, 15, front mold gantry, 16, front mold, 17, front mold driving hydraulic cylinder, 18, rear mold gantry, 19, Rear mold, 20, rear mold drive hydraulic cylinder, 21, horizontal hydraulic cylinder, 22, roller table, 23, feed roller bracket, 24, feed roller, 25, feed roller drive motor, 26, compression hydraulic cylinder, 27. Sheet.

Detailed ways

In order to clearly illustrate the technical features of this solution, the specific implementation of the present invention will be further described below according to the accompanying drawings.

Figures 1 to 6 show Embodiment 1 of the present invention. As shown in the figures, a corrugated sheet forming machine includes a frame 1, a front mold mechanism, a rear mold mechanism, a top mechanism and a feeding mechanism.

Front mold mechanism comprises front mold gantry 15, front mold 16 and front mold driving hydraulic cylinder 17, and front mold gantry 15 is fixedly installed on the frame 1, and front mold driving hydraulic cylinder 17 is installed on the front mold gantry 15 and is used for The front mold 16 is driven to move vertically. The rear mold mechanism includes a rear mold gantry 18, a rear mold 19, a rear mold drive hydraulic cylinder 20 and a horizontal hydraulic cylinder 21. The rear mold gantry 18 is slidably installed on the frame 1, and the horizontal hydraulic cylinder 21 is installed on the frame 1. and be used to drive the back mold gantry 18 to move horizontally, and the back mold drive hydraulic cylinder 20 is installed on the back mold gantry 18 and is used to drive the back mold 19 to move vertically.

The top mechanism comprises a top mechanism support 2, a crank 3, a connecting rod 4, a top plate 5, a slideway 6 and a horizontal crank swing mechanism. The upper top mechanism support 2 is fixedly connected with the rear mold gantry 18, two cranks 3 are provided, one end of the crank 3 is pivotally connected with the upper top mechanism support 2, and the other end of the crank 3 is pivotally connected with the connecting rod 4 through the pivot 7, The pivot points of two cranks 3 and the upper top mechanism support 2 are located on the same vertical line. The upper top mechanism support 2, crank 3 and connecting rod 4 form a parallelogram mechanism, and the top plate 5 is fixedly connected with the connecting rod 4. Slideway 6 is fixedly arranged on the frame 1, and the track of slideway 6 is a quarter arc, and the center of this arc is positioned directly below the front mold mechanism, and the radius of this arc is equal to the length of crank 3. A roller 14 matched with the slideway 6 is provided on the pivot 7. When the pivot 7 was positioned at the rear lower end of the slideway 6, the crank 3 was in a horizontal state.

The horizontal crank swing mechanism can make the crank 3 in the horizontal state swing upwards. Specifically, as shown in Figure 2, Figure 5 and Figure 6, the horizontal crank swing mechanism includes a roller 8 and a roller drive motor 9, and the roller 8 is installed on the frame 1 A friction roller 10 is fixed on the pivot 7, and when the crank 3 is in a horizontal state, the pivot 7 is in contact with the friction roller 10.

The feeding mechanism is arranged at the rear of the back mold mechanism, and the feeding mechanism includes a roller table 22, a feed roller bracket 23, a feed roller 24, a feed roller drive motor 25 and a pressing hydraulic cylinder 26, and the roller table 22 is installed on the frame 1, the feed roller bracket 23 can be vertically slidably installed on the frame 1 and is located above the roller table 22, the feed roller 24 is installed on the feed roller bracket 23, and the feed roller drive motor 25 is installed on the feed roller The roller bracket 23 is connected with the feed roller 24 , and the pressing hydraulic cylinder 26 is installed on the frame 1 and connected with the feed roller bracket 23 .

The working process of the corrugated sheet forming machine of the present invention: in the initial state, the front mold mechanism and the rear mold mechanism press the two ends of the sheet 27 respectively, the crank 3 is in a horizontal state, and the distance between the front mold mechanism and the rear mold mechanism is crank 3 twice the length. Then the horizontal hydraulic cylinder 21 and the roller drive motor 9 start simultaneously, and the roller drive motor 9 drives the roller 8 to rotate counterclockwise, and the friction roller 10 drives the crank 3 to swing upwards at a small angle, so that the crank 3 crosses the dead point (the crank 3 and the slideway 6 The position where the centers of the trajectories coincide, the horizontal force cannot generate torque to the crank 3 at this moment). Then, the rear mold mechanism moves forward, and at the same time, the roller 14 moves along the slideway 6, so that the upper end of the top plate 5 is always in contact with the bending point of the sheet 27, as shown in Figure 5 and Figure 6, this moment is The crank is at a 45° angle.

Fig. 7 and Fig. 8 show the second embodiment of the present invention. As shown in the figure, a corrugated sheet forming machine includes a frame 1, a front mold mechanism, a rear mold mechanism, a top mechanism and a feeding mechanism.

Front mold mechanism comprises front mold gantry 15, front mold 16 and front mold driving hydraulic cylinder 17, and front mold gantry 15 is fixedly installed on the frame 1, and front mold driving hydraulic cylinder 17 is installed on the front mold gantry 15 and is used for The front mold 16 is driven to move vertically. The rear mold mechanism includes a rear mold gantry 18, a rear mold 19, a rear mold drive hydraulic cylinder 20 and a horizontal hydraulic cylinder 21. The rear mold gantry 18 is slidably installed on the frame 1, and the horizontal hydraulic cylinder 21 is installed on the frame 1. and be used to drive the back mold gantry 18 to move horizontally, and the back mold drive hydraulic cylinder 20 is installed on the back mold gantry 18 and is used to drive the back mold 19 to move vertically.

The top mechanism comprises a top mechanism support 2, a crank 3, a connecting rod 4, a top plate 5, a slideway 6 and a horizontal crank swing mechanism. The upper top mechanism support 2 is fixedly connected with the rear mold gantry 18, two cranks 3 are provided, one end of the crank 3 is pivotally connected with the upper top mechanism support 2, and the other end of the crank 3 is pivotally connected with the connecting rod 4 through the pivot 7, The pivot points of two cranks 3 and the upper top mechanism support 2 are located on the same vertical line. The upper top mechanism support 2, crank 3 and connecting rod 4 form a parallelogram mechanism, and the top plate 5 is fixedly connected with the connecting rod 4. Slideway 6 is fixedly arranged on the frame 1, and the track of slideway 6 is a quarter arc, and the center of this arc is positioned directly below the front mold mechanism, and the radius of this arc is equal to the length of crank 3. A roller 14 matched with the slideway 6 is provided on the pivot 7. When the pivot 7 was positioned at the rear lower end of the slideway 6, the crank 3 was in a horizontal state.

The horizontal crank swing mechanism can make the crank 3 in the horizontal state swing upwards. Specifically, as shown in Figure 8, the horizontal crank swing mechanism includes a top pin 11, a spring 12 and an electromagnet 13. The frame 1 is provided with a top pin hole, and the top pin The pin hole is located at the rear lower end of the slideway 6, and the ejector pin 11 can be vertically slidably installed in the ejector pin hole. The spring 12 is located in the ejector pin hole and produces a vertical upward force on the ejector pin 11. The electromagnet 13 is installed in on the frame 1 and is used to attract and release the ejector pin 11.

The feeding mechanism is arranged at the rear of the back mold mechanism, and the feeding mechanism includes a roller table 22, a feed roller bracket 23, a feed roller 24, a feed roller drive motor 25 and a pressing hydraulic cylinder 26, and the roller table 22 is installed on the frame 1, the feed roller bracket 23 can be vertically slidably installed on the frame 1 and is located above the roller table 22, the feed roller 24 is installed on the feed roller bracket 23, and the feed roller drive motor 25 is installed on the feed roller The roller bracket 23 is connected with the feed roller 24 , and the pressing hydraulic cylinder 26 is installed on the frame 1 and connected with the feed roller bracket 23 .

The working process of the corrugated sheet forming machine of the present invention: in the initial state, the front mold mechanism and the rear mold mechanism press the two ends of the sheet 27 respectively, the crank 3 is in a horizontal state, and the distance between the front mold mechanism and the rear mold mechanism is crank 3 times the length, the electromagnet 13 is in an electrified state, attracting the ejector pin 11. Then the horizontal hydraulic cylinder 21 starts, and the electromagnet 13 is powered off. Under the action of the spring 12, the ejector pin 11 upwards pops up and the crank 3 swings upwards at a small angle, so that the crank 3 crosses the dead center (the crank 3 and the slideway 6 track The position where the centers of circles coincide, and the horizontal force cannot produce torque to the crank 3 at this moment). Then, the back mold mechanism moves forward, and at the same time, the roller 14 moves along the slideway 6, so that the upper end of the top plate 5 is kept in contact with the bending point of the sheet 27 all the time.

The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and can also be made without departing from the gist of the present invention within the scope of knowledge of those of ordinary skill in the art. Variations.

Claims (7)

1. The utility model provides a corrugated sheet make-up machine, includes frame (1), preceding mode mechanism, back mode mechanism and pushes up the mechanism, preceding mode mechanism fixed mounting is in frame (1), but back mode mechanism horizontal slip installs in frame (1), its characterized in that: the upper ejection mechanism comprises an upper ejection mechanism bracket (2), a crank (3), a connecting rod (4), a top plate (5), a slide way (6) and a horizontal crank swing mechanism; the upper ejection mechanism support (2) is fixedly connected with the rear die mechanism, two cranks (3) are arranged, one end of each crank (3) is pivoted with the upper ejection mechanism support (2), the other end of each crank (3) is pivoted with the connecting rod (4) through a pivot (7), the pivoting points of the two cranks (3) and the upper ejection mechanism support (2) are located on the same vertical line, the upper ejection mechanism support (2), the cranks (3) and the connecting rods (4) form a parallelogram mechanism, and the top plate (5) is fixedly connected with the connecting rods (4); the slide way (6) is fixedly arranged on the rack (1), the track of the slide way (6) is a quarter of circular arc, the center of the circular arc is positioned right below the front die mechanism, and the radius of the circular arc is equal to the length of the crank (3); the pivot (7) is in sliding fit with the slideway (6), and when the pivot (7) is positioned at the rear lower end of the slideway (6), the crank (3) is in a horizontal state; the horizontal crank swing mechanism can enable the crank (3) in a horizontal state to swing upwards.

2. The corrugated sheet forming machine according to claim 1, wherein: the horizontal crank swinging mechanism comprises a roller (8) and a roller driving motor (9), the roller (8) is installed on the rack (1), and when the crank (3) is in a horizontal state, the pivot (7) is in contact with the roller (8).

3. The corrugated sheet forming machine according to claim 2, wherein: and a friction roller (10) is fixedly arranged on the pivot (7), and when the crank (3) is in a horizontal state, the pivot (7) is in contact with the friction roller (10).

4. The corrugated sheet forming machine according to claim 1, wherein: horizontal crank swing mechanism includes knock pin (11), spring (12) and electro-magnet (13), be equipped with the knock pin hole on frame (1), the knock pin hole is located the back lower extreme of slide (6), but knock pin (11) vertical slidable installs in the knock pin hole, spring (12) are arranged in the knock pin hole and produce vertical ascending effort to knock pin (11), electro-magnet (13) are installed on frame (1) and are used for attracting and release knock pin (11).

5. The corrugated sheet forming machine according to any one of claims 1 to 4, characterized in that: and the pivot (7) is provided with a roller (14) matched with the slide way (6).

6. The corrugated sheet forming machine according to any one of claims 1 to 4, characterized in that: the front mold mechanism comprises a front mold portal frame (15), a front mold (16) and a front mold driving hydraulic cylinder (17), the front mold portal frame (15) is fixedly installed on the rack (1), and the front mold driving hydraulic cylinder (17) is installed on the front mold portal frame (15) and is used for driving the front mold (16) to vertically move; the rear die mechanism comprises a rear die portal frame (18), a rear die (19), a rear die driving hydraulic cylinder (20) and a horizontal hydraulic cylinder (21), the rear die portal frame (18) is slidably mounted on the rack (1), the horizontal hydraulic cylinder (21) is mounted on the rack (1) and used for driving the rear die portal frame (18) to horizontally move, and the rear die driving hydraulic cylinder (20) is mounted on the rear die portal frame (18) and used for driving the rear die (19) to vertically move.

7. The corrugated sheet forming machine according to any one of claims 1 to 4, characterized in that: still include feed mechanism, feed mechanism establishes the rear of back mould mechanism, feed mechanism includes roll table (22), feed roller support (23), feed roller (24), feed roller driving motor (25) and compresses tightly pneumatic cylinder (26), roll table (22) are installed in frame (1), but feed roller support (23) vertical sliding install in frame (1) and lie in the top of roll table (22), install on feed roller support (23) feed roller (24), feed roller driving motor (25) are installed on feed roller support (23) and are connected with feed roller (24), compress tightly pneumatic cylinder (26) and install in frame (1) and be connected with feed roller support (23).