An automatic hammer head stacking and stacking integrated device for cross wedge rolling shaft parts

Abstract

The application discloses an automatic hammer head stacking integrated device for wedge cross rolling shaft parts, which comprises a conveying mechanism installed at the discharge port of the wedge cross rolling machine, a stacking mechanism arranged at the tail end of the conveying mechanism, and an automatic head removing mechanism arranged at the middle part of the conveying mechanism. The automatic head removing mechanism comprises a fixed frame, a plurality of vertical tracks A arranged on the fixed frame, a lifting support commonly arranged on all the tracks A, an oil cylinder A arranged at the top end of the fixed frame, a piston rod of the oil cylinder A connected with the lifting support, a horizontal plate arranged at the bottom end of the lifting support, a hammer head arranged on each side of the horizontal plate, an anvil arranged below each of the two hammer heads and used for supporting the workpiece, an inductive switch arranged at the anvil and used for inducting the workpiece, and the inductive switch connected with the oil cylinder A and the conveying mechanism in signal mode. A centering mechanism is arranged on the conveying mechanism and used for aligning the excess material at the two ends of the workpiece with the hammer heads of the automatic head removing mechanism. The application realizes on-line head removing and automatic neat stacking, and improves the production efficiency.

Description

Technical Field

[0001] This invention relates to the field of shaft parts manufacturing technology, specifically an automatic hammer stacking integrated device for wedge cross-rolling shaft parts. Background Technology

[0002] The processing of shaft parts for automobiles requires multiple steps. First, the round steel material is heat-treated to a certain temperature and then fed into a wedge rolling mill to be rolled into a rolled piece. Then, it is machined into its final shape. The semi-finished rolled piece has excess material at both ends, which needs to be removed before machining. Currently, the excess material is usually removed offline by a press. This requires manual loading and unloading, and the workpieces after the material is removed are inconvenient to collect. Manually arranging them neatly is inefficient and labor-intensive. If the existing press is used online, the workpiece is cut directly on the conveyor mechanism. However, due to inaccurate workpiece positioning, the cutting position may deviate and damage the workpiece. Summary of the Invention

[0003] The purpose of this invention is to address the problems in existing cutting and stacking processes for shaft parts after wedge cross rolling, such as inaccurate online cutting position leading to workpiece damage, low offline cutting efficiency, and uneven and disorderly stacking. This invention provides an automatic hammer stacking integrated device for wedge cross rolling shaft parts, which improves production efficiency, reduces manual labor intensity, improves cutting accuracy, and automatically and neatly arranges the workpieces after removing the material head.

[0004] The specific solution of the present invention is: an automatic hammer stacking integrated device for wedge cross-rolled shaft parts, comprising a conveying mechanism installed at the discharge port of the wedge cross-roller, a stacking mechanism at the end of the conveying mechanism, and an automatic de-heading mechanism in the middle of the conveying mechanism. The automatic de-heading mechanism includes a fixed frame with several vertical rails A. A lifting bracket is mounted on all rails A. A hydraulic cylinder A is mounted at the top of the fixed frame, and the piston rod of the hydraulic cylinder A is connected to the lifting bracket. A horizontally arranged plate is provided at the bottom of the lifting bracket. A hammer is mounted on each side of the plate. An anvil for supporting the workpiece is provided below each of the two hammers. An induction switch for sensing the workpiece is installed at the anvil. The induction switch is signal-connected to the hydraulic cylinder A and the conveying mechanism. A centering mechanism is provided on the conveying mechanism to align the excess material at both ends of the workpiece with the hammers of the automatic de-heading mechanism.

[0005] The stacking mechanism of the present invention includes a trolley, with a track B arranged along the X-axis below the trolley. A drive mechanism A is provided at one end of the track B, and the output end of the drive mechanism A is connected to the trolley to drive the trolley to move along the track B. A fixed bracket is provided on the top of the trolley, and a slide rail arranged along the Z-axis is mounted on the fixed bracket. A lifting bracket is mounted on the slide rail, and a slider that cooperates with the slide rail is mounted on one side of the lifting bracket. The drive mechanism B is mounted on the fixed bracket, and the output end of the drive mechanism B is connected to the lifting bracket to drive the lifting bracket to move up and down along the slide rail. A support platform is provided on the other side of the lifting bracket, and a bracket is placed on the support platform. The bracket is used to load shaft-type rolled parts flowing out of the rolling mill.

[0006] The drive mechanism A of the present invention includes a servo motor A and a connecting block. The output end of the servo motor A is fixedly equipped with a lead screw A. The connecting block is fixedly installed on the bottom surface of the trolley, and the lead screw A is threadedly connected to the connecting block. The drive mechanism B includes a servo motor B. The output end of the servo motor B is equipped with a lead screw B. The lifting bracket is provided with a support frame that is threadedly connected to the lead screw B.

[0007] The conveying mechanism of this invention adopts a stepping beam conveying mechanism, including a stationary beam and a moving beam. A set of stepping drive mechanisms is installed at both ends of the bottom of the moving beam. The centering mechanism includes several sets of centering inclined blocks, which are arranged on the moving beam or the stationary beam along the conveying direction. Each set of centering inclined blocks includes two symmetrically arranged guide inclined blocks. The guide inclined blocks face the center line of the moving beam and are inclined upward. A distance L is provided between the tops of the two guide inclined blocks in the same set. The distance L gradually increases along the conveying direction to Lmax. Lmax matches the shoulder distance of the shaft part. The distance L of each subsequent set of guide inclined blocks is Lmax. The automatic head removal mechanism is set at the guide inclined block with a distance L of Lmax.

[0008] The stepper drive mechanism of the present invention includes a support rod fixedly connected to a moving beam, a sliding frame mounted at the bottom of the support rod, the top of the sliding frame fixedly connected to the bottom of the support rod, an eccentric wheel mounted inside the sliding frame, the outer circular surface of the eccentric wheel slidably connected to the inner frame of the sliding frame, bearing seats connected to both ends of the eccentric shaft of the eccentric wheel, and a drive motor connected to one end of the eccentric shaft.

[0009] In this invention, both the static beam and the moving beam are wavy, and the guide blocks are all located at the troughs of the moving beam or the static beam.

[0010] The stepping beam conveying mechanism of the present invention is equipped with a counting sensor, and the drive motor is a variable frequency motor. The counting sensor is connected to the variable frequency motor. When the counting sensor detects that the number of workpieces has reached the preset value of the stacking mechanism being fully loaded, the variable frequency motor reduces its frequency to reduce the conveying speed.

[0011] The guide block of the present invention is made of bent steel sheet, with one side of the bent steel sheet fitting against the side of the moving beam and the other side extending toward the center of the moving beam.

[0012] The plate described in this invention is equipped with a hydraulic cylinder B in the middle. The piston rod of the hydraulic cylinder B passes downward through the plate and is fitted with a pressure plate, which is used to press down the shaft-type rolled workpiece.

[0013] The plate described in this invention is equipped with a water-cooled box, which contains cooling water channels and is used to cool the plate.

[0014] Compared with the prior art, the present invention has the following advantages: 1. The workpiece head can be accurately removed online during the conveying process of the wedge cross rolling mill, eliminating the need for manual loading and unloading, thus improving production efficiency and reducing labor intensity; 2. The workpieces after head removal are collected by the stacker and automatically stacked neatly, facilitating subsequent operations and improving the utilization rate of the trays; 3. The stepping conveyor mechanism is equipped with an automatic centering mechanism to ensure accurate workpiece positioning and that the head of the workpiece is aligned with the hammer, avoiding damage to the workpiece; 4. By setting a counting sensor and a variable frequency motor, the conveying mechanism automatically reduces its conveying speed when the stacker is full of workpieces, giving workers enough time to move the trays and stacked workpieces; 5. A water-cooling box is provided on the lifting support to prevent deformation caused by excessive temperature. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention;

[0016] Figure 2 This is a perspective view of the stacking mechanism of the present invention;

[0017] Figure 3 yes Figure 2 A sectional view;

[0018] Figure 4 This is a perspective view of the walking beam conveying mechanism according to Embodiment 1 of the present invention;

[0019] Figure 5 yes Figure 4 Top view;

[0020] Figure 6 yes Figure 5 AA view;

[0021] Figure 7 yes Figure 4 Side view;

[0022] Figure 8 yes Figure 7 A magnified view at point M;

[0023] Figure 9 This is a structural schematic diagram of a shaft-type rolled product;

[0024] Figure 10 This is a top view of the walking beam conveying mechanism according to Embodiment 2 of the present invention;

[0025] Figure 11 This is a perspective view of the automatic head removal mechanism of the present invention;

[0026] Figure 12 yes Figure 11 The main view;

[0027] Figure 13 yes Figure 12 AA view;

[0028] Figure 14 yes Figure 12 BB view;

[0029] Figure 15 yes Figure 14 CC view;

[0030] In the diagram: 1. Wedge cross rolling mill; 2. Walking beam conveyor mechanism; 201. Sliding frame; 202. Static beam; 203. Moving beam; 204. Connecting beam; 205. Guide block; 206. Support rod; 207. Support wheel; 208. Eccentric wheel; 209. Drive motor; 3. Anvil; 4. Automatic head removal mechanism; 401. Fixed frame; 402. Track A; 403. Lifting bracket; 404. Hydraulic cylinder A; 405. Water cooling box; 406. Flat plate. 407. Hammer head; 408. Waist-shaped hole; 409. Hydraulic cylinder B; 410. Pressure plate; 5. Stacking mechanism; 501. Rail B; 502. Trolley; 521. Connecting block; 503. Lead screw A; 504. Lifting bracket; 505. Fixed bracket; 506. Slider; 507. Slide rail; 508. Bracket; 509. Servo motor A; 510. Servo motor B; 511. Lead screw B; 512. Support frame; 6. Shaft rolled parts; 7. Shaft shoulder. Detailed Implementation

[0031] Example 1

[0032] See Figures 1-3 , Figures 11-15This embodiment is an automatic hammer stacking integrated device for wedge cross-rolled shaft parts. It includes a conveying mechanism installed at the discharge port of the wedge cross-roller, a stacking mechanism 5 at the end of the conveying mechanism, and an automatic head-removing mechanism 4 in the middle of the conveying mechanism. The automatic head-removing mechanism 4 includes a fixed frame 401 with several vertical rails A402. A lifting bracket 403 is mounted on all rails A402. A hydraulic cylinder A404 is mounted at the top of the fixed frame 401. The piston rod is connected to the lifting bracket 403. The bottom end of the lifting bracket 403 is provided with a horizontally arranged plate 406. A hammer head 407 is installed on each side of the plate 406. Below each hammer head 407 is an anvil seat 3 for supporting the workpiece. An induction switch for sensing the workpiece is installed at the anvil seat 3. The induction switch is connected to the oil cylinder A404 and the conveying mechanism. The conveying mechanism is provided with a centering mechanism, which is used to align the excess material at both ends of the workpiece with the hammer head 407 of the automatic de-heading mechanism 4.

[0033] Further, see Figure 2 , Figure 3 The stacking mechanism 5 includes a trolley 502. Below the trolley 502 is a track B501 arranged along the X-axis. One end of the track B501 is equipped with a drive mechanism A. The output end of the drive mechanism A is connected to the trolley 502 to drive the trolley 502 to move along the track B501. The top of the trolley 502 is equipped with a fixed bracket 505. The fixed bracket 505 is equipped with a slide rail 507 arranged along the Z-axis. The slide rail 507 is equipped with a lifting bracket 504. One side of the lifting bracket 504 is equipped with a slider 506 that cooperates with the slide rail 507. The fixed bracket 505 is equipped with a drive mechanism B. The output end of the drive mechanism B is connected to the lifting bracket 504 to drive the lifting bracket 504 to move up and down along the slide rail 507. The other side of the lifting bracket 504 is equipped with a support platform. A bracket 508 is placed on the support platform. The bracket 508 is used to load shaft-type rolled pieces 6.

[0034] Furthermore, the drive mechanism A includes a servo motor A509 and a connecting block 521. The output end of the servo motor A509 is fixedly equipped with a lead screw A503. The connecting block 521 is fixedly installed on the bottom surface of the trolley 502, and the lead screw A503 is threadedly connected to the connecting block 521. The drive mechanism B includes a servo motor B510. The output end of the servo motor B510 is equipped with a lead screw B511. The lifting bracket 504 is provided with a support frame 512 that is threadedly connected to the lead screw B511.

[0035] Further, see Figures 4-9The conveying mechanism adopts a stepping beam conveying mechanism 2, including a stationary beam 202 and a moving beam 203. A set of stepping drive mechanisms is installed at both the front and rear ends of the bottom of the moving beam 203. The centering mechanism includes several sets of centering inclined blocks, which are arranged on the moving beam 203 along the conveying direction. Each set of centering inclined blocks includes two symmetrically arranged guide inclined blocks 205. The guide inclined blocks 205 face the center line of the moving beam 203 and are inclined upward. There is a distance L between the tops of the two guide inclined blocks 205 in the same set. The distance L gradually increases along the conveying direction to Lmax. Lmax matches the distance of the shoulder 7 of the shaft rolled piece 6. The distance L of each subsequent set of guide inclined blocks 205 is Lmax. The automatic head removal mechanism 4 is set at one of the guide inclined blocks 205 with a distance L of Lmax.

[0036] Furthermore, the stepping drive mechanism includes a support rod 206 fixedly connected to the moving beam 203. A sliding frame 201 is mounted at the bottom of the support rod 206, and the top of the sliding frame 201 is fixedly connected to the bottom of the support rod 206. An eccentric wheel 208 is installed inside the sliding frame 201. Bearing seats are connected to both ends of the eccentric shaft of the eccentric wheel 208, and a drive motor 209 is connected to one end of the eccentric shaft. Two support wheels 207 are mounted on the upper part of the sliding frame 201. The central axis of the support wheels 207 is rotatably connected to the sliding frame 201, and the outer surfaces of the two support wheels 207 simultaneously contact the outer surfaces of the eccentric wheels 208. The two drive motors 209 synchronously drive the two eccentric wheels 208 to rotate. The eccentric wheels 208 drive the moving beam 203 to move along an elliptical trajectory through the sliding frame 201, thereby achieving the purpose of stepping conveying of the shaft-type rolled piece 6.

[0037] Furthermore, both the static beam 202 and the moving beam 203 are wavy, and the guide blocks 205 are all located at the troughs of the moving beam 203, so that the shaft-type rolled piece 6 automatically rolls onto the guide blocks 205.

[0038] Furthermore, the stepping beam conveying mechanism 2 is equipped with a counting sensor, and the drive motor 209 is a variable frequency motor. The counting sensor is connected to the variable frequency motor signal. When the counting sensor detects that the number of workpieces has reached the preset value of the stacking mechanism 5 being fully loaded, the variable frequency motor reduces its frequency to reduce the conveying speed.

[0039] Furthermore, the guide block 205 is made of bent steel sheet, with one side of the bent steel sheet fitting against the side of the moving beam and the other side extending toward the center of the moving beam.

[0040] Furthermore, a hydraulic cylinder B409 is installed in the middle of the plate 406. The piston rod of the hydraulic cylinder B409 passes downward through the plate 406 and is equipped with a pressure plate 410. The pressure plate 410 is used to press down the shaft-type rolled workpiece 6. Before the hammer 407 presses down, it first presses the workpiece through the pressure plate 410 to increase the stability of the workpiece when removing the material head.

[0041] Furthermore, the plate 406 is equipped with a water-cooled box 405, which has a cooling water channel. The water-cooled box 405 is used to cool the plate 406. Circulating cooling water is continuously introduced into the water-cooled box 405 to cool the plate 406 and the entire lifting bracket 403, so as to prevent deformation caused by prolonged exposure to the heat radiation of the high-temperature workpiece.

[0042] Furthermore, the hammer head 407 has a threaded hole in the middle, and the plate 406 has a waist-shaped hole 408 corresponding to the hammer head 407. A locking bolt is installed in the waist-shaped hole 408, and the hammer head 407 is fixed to the bottom surface of the plate 406 by the locking bolt. By setting the waist-shaped hole 408 and the locking bolt, the axial position of the hammer head 407 relative to the shaft-type rolled piece 6 can be adjusted, thereby adapting to workpieces of different lengths. The working principle of this embodiment is as follows: The workpiece exiting from the wedge mill 1 automatically falls onto the walking beam conveyor 2. During the forward conveying of the workpiece by the walking beam conveyor 2, the workpiece is gradually positioned by the guiding action of each set of centering inclined blocks. The shoulder 7 contacts the guide inclined block 205. Through the guiding action of the inclined surface of the guide inclined block 205, the shaft-type rolled piece 6, which is off-center, is gradually aligned with the center by its own weight. When the spacing L of a certain set of centering inclined blocks is Lmax, the two shoulders 7 of the shaft-type rolled piece 6 straddle the two guide inclined blocks 205 respectively. At this time, the shaft-type rolled piece 6 can no longer move along the axial direction. At this time, the middle part of the shaft-type rolled piece 6 is aligned with the center line of the moving beam, thus completing the automatic centering. When the workpiece is conveyed to the anvil 3, the inductive switch detects the workpiece and sends a signal to the walking beam conveyor. The drive mechanism of structure 2 pauses, and at the same time sends a signal to the automatic head removal mechanism 4, causing the piston rods of cylinders A404 and B409 to extend downwards. The hammer 407 presses down with the lifting bracket 403 to remove the material heads at both ends of the shaft-type rolled piece 6. Then the conveying mechanism continues to convey the workpiece forward to the stacking mechanism 5. The bracket 508 of the stacking mechanism 5 is lifted by the servo motor B510 to the height closest to the end of the conveying mechanism. Each time a workpiece is received, the servo motor A509 drives the trolley 502 to move backward a certain distance. After the bottom row is full, the bracket 508 drops a certain height and then receives the second row until the bracket 508 is full of workpieces. When the stepping conveyor mechanism is full, the variable frequency motor decelerates and reduces the conveying speed to wait for the bracket 508 and the workpieces to be lifted away. Then the stacking mechanism 5 resets to the starting receiving position to prepare to receive the next batch of workpieces.

[0043] Example 2

[0044] This embodiment is basically the same in structure as Embodiment 1, except that, see [link / reference] Figure 10 The aforementioned sets of centering inclined blocks are arranged on the static beam 202 along the conveying direction. The purpose of this arrangement is to accommodate rolled pieces with long shoulder spacing 7. The automatic centering technology principle is the same as that in Embodiment 1.

Claims

1. An automatic hammer stacking integrated device for wedge cross-rolled shaft parts, comprising a conveying mechanism installed at the discharge port of the wedge cross-roller, a stacking mechanism at the end of the conveying mechanism, and an automatic hammer removal mechanism in the middle of the conveying mechanism, characterized in that: The automatic de-heading mechanism includes a fixed frame with several vertical tracks A. A lifting bracket is mounted on all tracks A. A hydraulic cylinder A is mounted at the top of the fixed frame, and the piston rod of the hydraulic cylinder A is connected to the lifting bracket. A horizontally arranged plate is mounted at the bottom of the lifting bracket. A hammer is mounted on each side of the plate. Below each hammer is an anvil for supporting the workpiece. An induction switch for sensing the workpiece is mounted at the anvil. The induction switch is connected to the hydraulic cylinder A and the conveying mechanism. The conveying mechanism is equipped with a centering mechanism for aligning the excess material at both ends of the workpiece with the hammers of the automatic de-heading mechanism. The conveying mechanism adopts a stepping beam conveying mechanism, including a stationary beam and a moving beam. A set of stepping drive mechanisms is installed at both the front and rear ends of the bottom of the moving beam. The centering mechanism includes several sets of centering inclined blocks, which are arranged along the conveying direction on the moving or stationary beam. Each set of centering inclined blocks includes two symmetrically arranged guide inclined blocks, which face the centerline of the moving beam and are inclined upwards. A distance L is provided between the tops of the two guide inclined blocks in the same set. The distance L gradually increases along the conveying direction to Lmax, and Lmax matches the shoulder spacing of the shaft parts. The distance L of subsequent sets of guide inclined blocks is also Lmax. The automatic head-removing mechanism is located at the guide inclined block with a distance L of Lmax. Both the static beam and the moving beam are wavy, and the guide blocks are all set at the troughs of the moving beam or the static beam. The guide block is made of bent steel sheet, with one side of the bent steel sheet fitting against the side of the moving beam and the other side extending towards the center of the moving beam.

2. The automatic hammer stacking integrated device for wedge-rolled shaft parts according to claim 1, characterized in that: The stacking mechanism includes a trolley with a track B arranged along the X-axis below it. One end of the track B is equipped with a drive mechanism A, the output of which is connected to the trolley to drive it to move along the track B. A fixed bracket is mounted on the top of the trolley, and a slide rail arranged along the Z-axis is mounted on the fixed bracket. A lifting bracket is mounted on the slide rail, and a slider that cooperates with the slide rail is mounted on one side of the lifting bracket. The drive mechanism B is mounted on the fixed bracket, and the output of which is connected to the lifting bracket to drive it to move up and down along the slide rail. A support platform is provided on the other side of the lifting bracket, and a bracket is placed on the support platform for loading shaft-type rolled parts flowing out of the rolling mill.

3. The automatic hammer stacking integrated device for wedge-rolled shaft parts according to claim 2, characterized in that: The drive mechanism A includes a servo motor A and a connecting block. The output end of the servo motor A is fixedly equipped with a lead screw A. The connecting block is fixedly installed on the bottom surface of the trolley, and the lead screw A is threadedly connected to the connecting block. The drive mechanism B includes a servo motor B. The output end of the servo motor B is equipped with a lead screw B. The lifting bracket is provided with a support frame that is threadedly connected to the lead screw B.

4. The automatic hammer stacking integrated device for wedge-rolled shaft parts according to claim 1, characterized in that: The stepper drive mechanism includes a support rod fixedly connected to the moving beam, a sliding frame mounted at the bottom of the support rod, the top of the sliding frame fixedly connected to the bottom of the support rod, an eccentric wheel mounted inside the sliding frame, the outer circular surface of the eccentric wheel slidably connected to the inner frame of the sliding frame, bearing seats connected to both ends of the eccentric shaft of the eccentric wheel, and a drive motor connected to one end of the eccentric shaft.

5. An automatic hammer stacking integrated device for wedge-rolled shaft parts according to claim 4, characterized in that: The stepping beam conveying mechanism is equipped with a counting sensor, and the drive motor is a variable frequency motor. The counting sensor is connected to the variable frequency motor. When the counting sensor detects that the number of workpieces has reached the preset value of the stacking mechanism being fully loaded, the variable frequency motor reduces its frequency to reduce the conveying speed.

6. The automatic hammer stacking integrated device for wedge-rolled shaft parts according to claim 1, characterized in that: A hydraulic cylinder B is installed in the middle of the plate. The piston rod of the hydraulic cylinder B passes downward through the plate and is fitted with a pressure plate, which is used to press down the shaft-type rolled parts.

7. An automatic hammer stacking integrated device for wedge-rolled shaft parts according to claim 1, characterized in that: The plate is equipped with a water-cooled box, which contains cooling water channels and is used to cool the plate.

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