Multi-station step-pitch-adjustable stepping transferring device and method

Abstract

The invention relates to the technical field of material conveying devices, and discloses a multi-station step-pitch-adjustable stepping transferring device and method.The lifting mechanism comprises a supporting beam located at the top so that the supporting beam can ascend and descend; the sliding units comprise sliding rails arranged on the supporting beams, transferring units are arranged on the sliding rails in a sliding mode, the sliding rails are obliquely arranged, and the front ends of the sliding rails are lower than the rear ends of the sliding rails. An adjusting piece used for buffering and adjusting the low position is arranged at the front end of the interior of the sliding rail. Lateral guide wheels are arranged on the side surfaces of the transfer units; the return guide mechanism comprises a return guide rail correspondingly arranged on one side of the sliding rail, the supporting beam ascends and descends to drive the side guide wheels to move in the return guide rail, and the transfer unit at the low position of the sliding rail is guided to the high position of the sliding rail. Through the arrangement of structures such as the sliding track, the transferring unit and the adjusting piece, the requirements of a new technology for synchronous conveying such as step pitch adjustment, material section and translation can be met; and a new process can be quickly adapted by adjusting the stepping transfer distance of the sliding rail.

Description

Technical Field

[0001] The present invention relates to the technical field of material conveying devices, and in particular to a multi-station adjustable step-by-step conveying device and method. Background Art

[0002] Multi-station material conveying equipment is used to realize the simultaneous transfer of multi-station materials to adjacent stations between stations. Multi-station material conveying equipment is frequently used in the production of long products in the metallurgical industry. It mostly adopts centralized transmission step-by-step transfer equipment. Multiple lifting stations are arranged on the support beam or chain to realize the simultaneous transfer of steel between multiple stations without rotation and axial movement. Due to the limitations of centralized transmission and lifting station layout structure, the existing step-by-step transportation equipment cannot meet the requirements of new process layout spacing and the requirements of synchronous transmission of materials with non-equal step distance. For the bar and pipe production lines in the metallurgical industry, multi-station flaps or pallets are often used. The toothed structure of the pallet connecting the steel surface is used to complete the synchronous transmission of multiple multi-station tubes and bars by using the height difference between the stations formed by the toothed structure during the lifting process of the pallet. Although this method can meet the requirements for synchronous transmission of materials with non-equal step distance, there is also the possibility that the material will rotate along the tooth surface and throw the steel during the transmission process between stations. It cannot be used for materials with non-circular cross-sections, and it cannot meet the requirements of synchronous transmission of materials with horizontal movement. Summary of the invention

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a multi-station adjustable step transfer device and method, which can not only adjust the step distance on the basis of multi-station synchronous transfer, but also meet the requirements of new processes for synchronous transmission of material cross-section, step distance adjustment, translation, etc.

[0004] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0005] In a first aspect, a multi-station adjustable step-by-step conveying device comprises:

[0006] A lifting mechanism is provided at one side of the workstation between the process steps and arranged along the transfer direction, and the lifting mechanism includes a support beam located at the top to realize the lifting movement of the support beam;

[0007] Several sliding units, including sliding tracks arranged on the support beam, on which a transfer unit for supporting materials is slidingly arranged, the sliding tracks are arranged at an inclination and the front end is lower than the rear end, so that the transfer unit drives the materials to slide forward from a high position to a low position; an adjusting member for buffering and adjusting the low position is arranged at the front end of the sliding track to limit the sliding distance while completing the slow stop positioning of the materials; a side guide wheel is arranged on the side of the transfer unit;

[0008] The return guide mechanism comprises a return guide track correspondingly arranged on one side of the sliding track. The return guide track is U-shaped. The lifting and lowering of the support beam can drive the side guide wheel to move in the return guide track, so as to guide the transfer unit at the low position of the sliding track to the high position of the sliding track.

[0009] As a further implementation method, multiple groups of inter-process workstations are arranged along the transfer direction, and the sliding length of the sliding track is adapted to the spacing between two adjacent inter-process workstations through an adjustment member. The transfer unit is a support block structure, and the shape of the support surface at its top matches the cross-sectional shape of the material.

[0010] As a further implementation method, a groove is provided at the top of the sliding track, and a roller is provided at the bottom of the transfer unit. The roller and the groove are rollingly matched. A threaded hole is provided at the bottom end of the sliding track. One end of the adjusting member cooperates with the threaded hole and extends into the groove. A buffer block is provided at the end of the adjusting member for buffering the transfer unit. The relative position of the buffer block in the groove can be adjusted by rotating the adjusting member.

[0011] As a further implementation method, each group of workstations between process steps corresponds to a group of lifting mechanisms, the support beam is connected to the driving mechanism, the output end of the driving mechanism is connected to the transmission shaft, the transmission shaft runs through each group of lifting mechanisms, the transmission shaft is hinged to the connecting rod through a transmission rod, the connecting rod is hinged to the support beam through a connecting rod, and the transmission shaft rotates to realize the lifting and lowering of the support beam; a column is provided near the end of the support beam, and a lifting guide wheel is provided at the end of the support beam, and the lifting guide wheel rolls with the internal track of the column.

[0012] As a further implementation method, the return guide mechanism includes a support column, a mounting plate is provided at the top of the support column, a return guide track is provided on the side of the mounting plate close to the support beam, the return guide track is composed of two groups of U-shaped plates, and a sliding channel for the lateral guide wheel is formed between the two U-shaped plates. The sliding channel includes vertical sliding channels located at both ends and an intermediate sliding channel between the vertical sliding channels, and the front end of the intermediate sliding channel is higher than the rear end.

[0013] As a further implementation method, a check block is provided at the bottom end of the vertical sliding channel near the rear end position, one end of the check block is hinged on the inner U-shaped plate, and the other end extends to the inner side surface of the outer U-shaped plate. The check block only allows the lateral guide wheel to move from front to rear.

[0014] As a further implementation method, the sliding rails are fixed on both sides of the support beam through a supporting structure, and the sliding rails on both sides are staggered along the length direction of the support beam, and the low position of each sliding rail corresponds to a workstation between process steps.

[0015] As a further implementation method, the support structure is arranged at a first group of hinge points between the front end of the sliding track and the support beam, and also includes an inclination adjustment structure. The upper and lower ends of the inclination adjustment structure are respectively connected to the rear end of the sliding track and the support beam through a second group of hinge points. The inclination adjustment structure includes two threaded rods with opposite thread rotation directions that are rotatably connected to the second group of hinge points. The two threaded rods are connected by a threaded sleeve, and the inclination of the sliding track is adjusted by adjusting the distance between the two threaded rods through the threaded sleeve.

[0016] As a further implementation, the return guide rail is detachably mounted on the mounting plate.

[0017] In a second aspect, a multi-station adjustable step-by-step transfer method is provided, using any of the multi-station adjustable step-by-step transfer devices described above, comprising the following steps:

[0018] The support beam rises and drives the transfer unit to receive the material at the high position of the sliding track. The support beam continues to rise and drives the lateral guide wheel to disengage from the return guide track. The transfer unit drives the material to slide down along the transfer track to the low position at the front end, and transports the material forward one workstation. Then the support beam descends. During the descent, the lateral guide wheel cooperates with the return guide track. The return guide track pulls the lateral guide wheel back to the high position, completing a stepping cycle. As the support beam continues to rise and fall, the stepping transfer of the material is completed.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. The present invention can meet the requirements of new processes for synchronous transmission such as step adjustment, material cross-section, and translation on the basis of multi-station synchronous transfer by setting structures such as sliding rails, transfer units, and adjustment parts; the new process can be quickly adapted by adjusting the step transfer distance of the sliding rails.

[0021] 2. The shape of the supporting surface on the top of the mobile unit of the present invention matches the cross-sectional shape of the material, which can meet the needs of translational transfer of most long strip materials. The mobile base is detachably connected to the supporting block on its top, and the required supporting block can be quickly replaced according to different needs.

[0022] 3. The present invention can adjust the slope of the sliding track through the supporting structure, and utilize the height difference between workstations generated by the inclined surface to enable the transfer unit to automatically complete the transfer between workstations along the inclined surface. Different movement speeds correspond to different inclinations, thereby realizing the adjustment of the transfer speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0024] Figure 11 is a schematic diagram of a high-position state of a multi-station adjustable step-pitch stepping transfer device according to an embodiment of the present invention;

[0025] Figure 2 It is a multi-station adjustable step-distance stepping conveying device in an embodiment of the present invention;

[0026] Figure 3 is a schematic structural diagram of a driving mechanism in an embodiment of the present invention;

[0027] Figure 4 is a schematic diagram of a partial structure of a sliding track in an embodiment of the present invention;

[0028] Figure 5 is a schematic structural diagram of a transfer unit part in an embodiment of the present invention;

[0029] Figure 6 1 is a schematic diagram of a low-position state of a multi-station adjustable step-pitch stepping transfer device according to an embodiment of the present invention;

[0030] Figure 7 Schematic diagram of the support structure in an embodiment of the present invention.

[0031] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0032] Wherein: 1. base, 2. lifting mechanism, 3. support beam, 31. lifting guide wheel; 4. transmission shaft, 5. sliding unit, 6. transfer unit, 7. return guide mechanism, 8. workstation between processes, 9. material, 10. column; 21. connecting rod, 22. connecting rod, 41. mounting seat, 42. transmission rod; 51. sliding track, 52. adjustment part, 53. buffer block, 54. support plate, 55. support block, 56. hinge support, 57. threaded sleeve, 58. threaded rod, 59. connecting block; 61. roller, 62. lateral guide wheel, 63. transfer base, 64. V-shaped support block, 71. support column, 72. mounting plate, 73. return guide track, 74. check block. DETAILED DESCRIPTION

[0033] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0034] Embodiment 1

[0035] In a typical embodiment of the present invention, reference is made to Figure 1-Figure 7 As shown, a multi-station adjustable step-pitch stepping transfer device includes a base 1, a lifting mechanism 2, a support beam 3, a driving mechanism, a sliding unit 5, a transfer unit 6, a return guide mechanism 7, and a column 10.

[0036] like Figure 1 As shown, multiple groups of inter-process workstations 8 are arranged according to the length of the material 9 to be transferred. Each group of inter-process workstations 8 is provided with multiple workstations and arranged along the same straight line (horizontally). Each workstation includes a support column and a support block on the top of the support column. In the longitudinal direction, each workstation of the multiple groups of inter-process workstations 8 can support the same material 9.

[0037] like Figure 1 As shown, the lifting mechanism is arranged at one side of each group of process station 8 and arranged along the transfer direction (lateral direction), and the lifting mechanism 2 includes a support beam 3 located at the top to realize the lifting movement of the support beam.

[0038] A sliding unit 5 is provided on each support beam 3, and the sliding unit 5 includes a sliding track 51 arranged on the support beam, and a transfer unit 6 for supporting the material 9 is slidably provided on the sliding track 51. The sliding track 51 is inclined and the front end is lower than the rear end, so that the transfer unit 6 drives the material 10 to slide forward from a high position to a low position; a buffer and an adjusting member 52 for adjusting the low position are provided at the internal front end of the sliding track 51 to limit the sliding distance while completing the slow stop positioning of the material; a side guide wheel 62 is provided on the side of the transfer unit 6.

[0039] Specifically, Figure 1 As shown, each group of transversely arranged inter-process stations 8 corresponds to a group of lifting mechanisms 2, and the transversely arranged support beams 3 are connected to the driving mechanism. In this embodiment, three groups of inter-process stations 8 are arranged in total, and three groups of lifting mechanisms 2 are arranged correspondingly. The driving mechanism is arranged at the position of the inter-process station 8 near the middle group, and the output end of the driving mechanism is connected to the transmission shaft 4, which runs through each group of lifting mechanisms 2.

[0040] The form of the driving mechanism is not limited, and electric, pneumatic, etc. can be used through a synchronous shaft or a synchronous device. In this embodiment, the transmission shaft drives multiple groups of stepping transfer devices to work synchronously at the same time to complete the synchronous stepping of long materials.

[0041] like Figure 3 As shown, mounting seats 41 can be arranged in pairs on the ground, the end of the transmission shaft 4 extends to the swivel seat 41 and cooperates with the mounting seat 41 through a bearing, the bottom end of the transmission rod 42 is fixedly connected to the transmission shaft 4 between the mounting seats 41, and the top end of the transmission rod 42 is hinged to the connecting rod 21.

[0042] like Figure 2 As shown, the bottom end of the connecting rod 22 is also hinged on the ground through the top of the base 1, and the top of the connecting rod 22 is hinged to the corresponding position of the connecting rod 21, and the hinged position is also hinged to the support beam 3 through a connecting rod. Multiple groups of bases and connecting rods can be set correspondingly. Through this hinged relationship, when the driving mechanism drives the transmission shaft 4 to rotate, the support beam 3 can be lifted and lowered through the transmission rod 42 and under the action of the connecting rod 22.

[0043] like Figure 1 and Figure 2 As shown, in order to ensure that the support beam 3 can be stably lifted and lowered, a column 10 is set at the end of the support beam 3, a track is provided on the inner side of the column 10, and a lifting guide wheel 31 is provided at the end of the support beam 3. The lifting guide wheel 31 rolls with the inner track of the column 10 to ensure that the support beam 3 can be lifted vertically.

[0044] It can be understood that the transmission shaft 4 is arranged at a lateral middle position, and a group of driving mechanisms and the transmission shaft 4 are used to drive multiple lifting mechanisms.

[0045] like Figure 4-Figure 6 As shown, the sliding rails 51 are fixed on both sides of the support beam 3 through a supporting structure, and the sliding rails 51 on both sides are staggered along the length direction of the support beam 3. Two adjacent sliding rails 51 are set on different sides of the support beam 3, and the low position of each sliding rail corresponds to the workstation between process steps.

[0046] like Figure 4 As shown, the sliding track 51 is tilted, and its rear end is higher than the front end. A groove is provided on the top of the sliding track 51, and the transfer unit 6 is slidably provided in the groove. Rollers 61 are provided on both sides of the bottom of the transfer unit 6, and the groove extends to both sides to form a channel for the rollers 61 to roll, so that the transfer unit 6 can slide along the groove on the sliding track 51 through the rollers 61. When the transfer unit 6 is at a high position at the rear end of the sliding track 51, the inclined sliding track 51 can be used to drive the material 9 to slide to the low position at the front end of the sliding track 51, completing a step transfer action.

[0047] It can be understood that, due to the height difference between the two ends of the sliding track 51, the transfer unit supports the material 9, and the friction of the material 9 on the transfer unit 6 enables the transfer unit 6 to support the material 9 to slide down along the sliding track 51. Therefore, in the same longitudinal direction, the sliding of the transfer unit 6 supporting the same material 9 is synchronous.

[0048] The transfer unit 6 of this embodiment is used to lift the material and cooperate with the track to complete the material transfer and return to zero between workstations. The transfer unit 6 is a block support structure, and the shape of the support surface at the top matches the cross-sectional shape of the material. The support surface at the top of the transfer unit 6 of this embodiment is V-shaped. It can meet the requirements of receiving and delivering materials with different cross-sections. The material is a long strip material, such as bars, steel, etc.

[0049] The support part of the transfer unit 6 is divided into two parts: a transfer base 63 and a support block. In this embodiment, a V-shaped support block 64 can be detachably installed on the top of the transfer base 63. Figure 5The transfer base 63 is a cubic structure, and its top surface cooperates with the bottom surface of the V-shaped support block 64. At least two groups of blind holes are provided on the top surface of the transfer base 63. A positioning shaft (not shown in the figure) is vertically arranged corresponding to the bottom surface of the V-shaped support block 64. The V-shaped support block 64 is inserted into the blind hole through the positioning shaft to achieve fixed cooperation between the V-shaped support block 64 and the transfer base 63.

[0050] In another optional manner, at least two groups of through holes can be set on the V-shaped support block 64, and corresponding threaded holes can be set on the transfer base 63. The V-shaped support block 64 and the transfer base 63 can be detachably connected by fixing parts such as bolts and gaskets.

[0051] In this embodiment, the V-shaped support block 64 is preferably plugged and matched with the transfer base 63 through the positioning shaft. The shape of the support surface of the support block on the top of the transfer base 63 is not limited. When transferring other materials, a support block structure with a corresponding support surface shape can be used to plug and match the transfer base 63, such as an inverted trapezoid. In this way, the support block on the transfer base 63 can be quickly replaced to meet the transfer requirements of different types of materials, and after the support block is worn, a new V-shaped support block 64 can be quickly replaced without disassembling the transfer base 63.

[0052] like Figure 4 As shown, a threaded hole is provided at the front end (bottom end) of the sliding track 51, one end of the adjusting member 52 cooperates with the threaded hole and extends into the interior of the groove, a buffer block 53 is provided at the end of the adjusting member 52 for buffering the transfer unit to achieve slow stop positioning of the material, the adjusting member 52 is a threaded rod structure, the other end of which is located outside the sliding track 51, and the rear end of the adjusting member 52 can be rotatably connected with the buffer block 53 through a bearing, and when the stepping distance needs to be adjusted, the relative position of the buffer block 53 in the groove can be adjusted by rotating the adjusting member 52 to adapt to the workstations 8 between processes with different spacings. In this embodiment, the sliding length on the sliding track 51 is adapted to the spacing between the workstations of two adjacent processes through the adjusting member 52, and multi-station stepping transmission of materials with different spacings can be achieved.

[0053] This embodiment can change the stepping distance of different sliding rails 51 by adjusting the sliding lengths on different sliding rails 51, so as to adapt to the stepping transfer requirements of new processes. For example, when a new inspection station is added at the corresponding inter-process station 8, the sliding length of the corresponding sliding rail 51 can be adjusted to quickly adapt to the new process. Of course, the adjustment can also be achieved by disassembling sliding rails 51 of different lengths.

[0054] The support structure is arranged at a first set of hinge points between the front end of the sliding track 51 and the support beam 3, and also includes a slope adjustment structure, the upper and lower ends of which are respectively connected to the rear end of the sliding track 51 and the support beam through a second set of hinge points.

[0055] like Figure 7 As shown, the first set of hinge points and the second set of hinge points have the same structure, both including a hinge support 56, a connecting block 59 and a rotating shaft, and the connecting block 59 and the hinge support 56 are hinged through the rotating shaft. A support plate 54 is provided at the end of the side of the support beam 3 corresponding to the sliding track 51, and the top of the support plate 54 at the front end is hinged to the bottom of the front end of the sliding track through a supporting block 55 and the first set of hinge points, and the connecting block 59 of the first set of hinge points is provided at the bottom of the front end of the sliding track.

[0056] The top of the support plate 54 at the rear end is connected to a second set of hinge points, and the bottom of the rear end of the sliding track 51 is also provided with a second set of hinge points, wherein the support plate 54 corresponding to the rear end of the sliding track 51 and the bottom of the rear end of the sliding track 51 are both provided with connecting blocks 59, and a set of hinge supports 56 are each provided on one side of the two sets of connecting blocks 59 located at the rear end close to each other.

[0057] The inclination adjustment structure includes two threaded rods 58 with opposite thread rotation directions that are rotatably connected to the second group of hinge points, and are divided into an upper threaded rod and a lower threaded rod. The top end of the upper threaded rod is rotatably connected to a hinge support 56 at the rear end of the sliding track, and the bottom end of the lower threaded rod is rotatably connected to the hinge support 56 on the support plate 54 corresponding to the rear end of the sliding track. The two threaded rods 58 are close to each other at one end and cooperate with each other through a threaded sleeve 57. Since the threads of the two threaded rods 58 are in opposite directions, the distance between the two threaded rods 58 can be adjusted by rotating the threaded sleeve 57, thereby realizing the height of the rear end of the sliding track and realizing the inclination adjustment of the sliding track 51.

[0058] like Figure 1 As shown, the return guide mechanism 7 includes a return guide track 73 correspondingly arranged on one side of the sliding track. Each set of return guide mechanisms is arranged correspondingly to each set of sliding tracks 51 and is located outside the sliding track 51.

[0059] like Figure 2 As shown, each set of return guide mechanism 7 includes two support columns 71, a mounting plate 72 is provided between the inner side surfaces of the top ends of the two support columns 71, a return guide track 73 is provided on the side of the mounting plate 72 close to the support beam 3, and a check block 74 is provided on the return guide track 73.

[0060] The return guide track 73 is U-shaped and is composed of two U-shaped plates. A sliding channel for the lateral guide wheel 62 is formed between the two U-shaped plates. The sliding channel includes vertical sliding channels at both ends and an intermediate sliding channel between the vertical sliding channels. The front end of the intermediate sliding channel is higher than the rear end. The structural diagram is shown in FIG. Figure 2 shown.

[0061] like Figure 4 As shown, the lateral guide wheel 62 provided on the side of the transfer unit 6 extends to the return guide track 73, as shown in FIG. Figure 4, the transfer unit 6 slides along the groove to the lower position (front end) of the sliding track 51, and at this time, the lateral guide wheel 62 corresponds to the top of the vertical sliding channel at the front end of the middle sliding channel. When the support beam descends, the sliding track 51 can drive the lateral guide wheel to move in the return guide track. As the sliding track 51 descends, the transfer unit 6 can be pushed to the vertical sliding channel at the rear end of the middle sliding channel under the cooperation of the lateral guide wheel 62 and the return guide track 73, so as to guide the transfer unit 6 at the lower position of the sliding track 51 to the higher position of the sliding track 51.

[0062] A check block is provided at the bottom end of the vertical sliding channel at the rear end of the middle sliding channel, and the check block is installed on the inner U-shaped plate. Specifically, one end of the check block is hinged on the inner U-shaped plate, and the other end extends to the inner side surface of the outer U-shaped plate, so that the check block only allows the lateral guide wheel to move from front to rear.

[0063] It can be understood that the corners of the U-shaped plate are configured as arc-shaped transitions, so that the lateral guide wheel moves more smoothly.

[0064] After the lateral guide wheel 62 passes the check block 74, as the support beam 3 continues to rise, the lateral guide wheel 62 is driven to rise along the vertical sliding channel at the rear end. When the lateral guide wheel 62 is upwardly separated from the vertical sliding channel, a stepping cycle is completed. At this time, the transfer unit 6 lifts up the next material 9 to be transferred. As the transfer unit 6 slides to the low position of the sliding track 51 in the next step, the next step transfer is completed, and the material is transferred to the next station. The transfer unit 6 of this embodiment realizes that the lateral guide wheel 62 enters the return guide track 73 during the descent process, and the transfer unit 6 returns from the low position to the high position during the descent process.

[0065] The return guide rail 73 of this embodiment is detachably mounted on the mounting plate 72 to adapt to the stepping transfer distance of the sliding rail 51 .

[0066] This embodiment can realize the synchronous transmission of materials between multiple stations. During the transmission process, the materials will not roll or parabolically move. The V-shaped support surface on the top of the transfer unit 6 can complete the multi-station step-by-step transmission of non-circular cross-section materials. By adjusting the position of the buffer block, multi-station step-by-step transmission of materials with different spacings can be achieved. The structure is simple and compact, and it is easy to install and maintain. It is particularly suitable for adjusting the spacing of step-by-step material transmission between stations in the renovation project process, ensuring the accuracy of material transfer while reducing costs.

[0067] Embodiment 2

[0068] In a typical embodiment of the present invention, reference is made to Figure 1-Figure 7 As shown, a multi-station adjustable step-by-step conveying method, using the multi-station adjustable step-by-step conveying device as described in Example 1, includes the following steps:

[0069] The driving mechanism drives the transmission shaft 4 to rotate, and drives the connecting rod 21 through the transmission rod 42. Under the action of the connecting rod 22, the support beam 3 is lifted up, so that the support beam 3 rises. The lifting of the support beam 3 drives the transfer unit 6 to receive the material 9 at the high position of the sliding track 51. As the support beam 3 continues to rise, it drives the lateral guide wheel 62 to completely detach from the return guide track, and lifts the material 9 from the inter-process station 8. Then the transfer unit 6 drives the material to slide down along the transfer track 51 to the front low position. When the transfer unit 6 slides to the low position, it is buffered by the buffer block 53 to realize the forward conveyance of the material by one station. At this time, the state is as follows: Figure 4 shown.

[0070] After that, the support beam 3 descends, and the material 9 falls on the workstation after the transfer. As the support beam 3 continues to descend, the lateral guide wheel 62 enters the vertical sliding channel at the front end. As the support beam 3 continues to descend, the transfer unit 6 can be pushed to the vertical sliding channel at the rear end of the middle sliding channel under the cooperation of the lateral guide wheel 62 and the return guide track 73, so that the return guide track pulls the lateral guide wheel back to the high position, and then completes a stepping cycle. As the support beam continues to rise and fall, the stepping transfer of the material is completed. By setting the check block 74, it can be ensured that the transfer unit moves along the correct path.

[0071] When the spacing between the workstations 8 changes, the relative position of the buffer block 53 on the sliding track 51 is adjusted by rotating the adjusting member 52, thereby changing the sliding length of the transfer unit 6 on the sliding track 51 to adapt to the workstations with different spacings. Correspondingly, the U-shaped plate needs to be removed and replaced with a corresponding length so that the adjusted low position of the lateral guide wheel always corresponds to the corresponding position of the return guide track 73.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-station adjustable step-by-step conveying device, characterized in that: include: A lifting mechanism is provided at one side of the workstation between the process steps and arranged along the transfer direction, and the lifting mechanism includes a support beam located at the top to realize the lifting movement of the support beam; Several sliding units, including sliding tracks arranged on the support beam, on which a transfer unit for supporting materials is slidingly arranged, the sliding tracks are arranged at an inclination and the front end is lower than the rear end, so that the transfer unit drives the materials to slide forward from a high position to a low position; an adjusting member for buffering and adjusting the low position is arranged at the front end of the sliding track to limit the sliding distance while completing the slow stop positioning of the materials; a side guide wheel is arranged on the side of the transfer unit; The return guide mechanism comprises a return guide track correspondingly arranged on one side of the sliding track. The return guide track is U-shaped. The lifting and lowering of the support beam can drive the side guide wheel to move in the return guide track, so as to guide the transfer unit at the low position of the sliding track to the high position of the sliding track.

2. A multi-station adjustable step-by-step conveying device according to claim 1, characterized in that: Multiple groups of inter-process workstations are arranged along the transfer direction, and the sliding length of the sliding track is adapted to the spacing between two adjacent inter-process workstations through an adjusting member. The transfer unit is a support block structure, and the shape of the support surface at its top matches the cross-sectional shape of the material.

3. The multi-station adjustable step-by-step conveying device according to claim 2, characterized in that: A groove is provided at the top of the sliding track, and a roller is provided at the bottom of the transfer unit. The roller and the groove are rollingly matched. A threaded hole is provided at the bottom end of the sliding track. One end of the adjusting member cooperates with the threaded hole and extends into the groove. A buffer block is provided at the end of the adjusting member for buffering the transfer unit. The relative position of the buffer block in the groove can be adjusted by rotating the adjusting member.

4. The multi-station adjustable step-by-step conveying device according to claim 2, characterized in that: Each set of workstations between process steps corresponds to a set of lifting mechanisms. The support beam is connected to the driving mechanism. The output end of the driving mechanism is connected to the transmission shaft. The transmission shaft runs through each set of lifting mechanisms. The transmission shaft is hinged to the connecting rod through a transmission rod. The connecting rod is hinged to the support beam through a connecting rod. The transmission shaft rotates to realize the lifting and lowering of the support beam. A column is provided near the end of the support beam, and a lifting guide wheel is provided at the end of the support beam. The lifting guide wheel rolls with the internal track of the column.

5. The multi-station adjustable step-by-step conveying device according to claim 1, characterized in that: The return guide mechanism includes a support column, a mounting plate is provided at the top of the support column, a return guide track is provided on the side of the mounting plate close to the support beam, the return guide track is composed of two groups of U-shaped plates, a sliding channel for the lateral guide wheel is formed between the two U-shaped plates, the sliding channel includes vertical sliding channels at both ends and an intermediate sliding channel between the vertical sliding channels, and the front end of the intermediate sliding channel is higher than the rear end.

6. The multi-station adjustable step-by-step conveying device according to claim 5, characterized in that: A check block is provided at the bottom end of the vertical sliding channel near the rear end position, one end of the check block is hinged on the inner U-shaped plate, and the other end extends to the inner side surface of the outer U-shaped plate. The check block only allows the lateral guide wheel to move from front to rear.

7. The multi-station adjustable step-by-step conveying device according to claim 1, characterized in that: The sliding tracks are fixed on both sides of the support beam through a supporting structure. The sliding tracks on both sides are arranged alternately along the length direction of the support beam. The low position of each sliding track corresponds to a workstation between process steps.

8. The multi-station adjustable step-by-step conveying device according to claim 7, characterized in that: The support structure is arranged at a first set of hinge points between the front end of the sliding track and the support beam, and also includes an inclination adjustment structure. The upper and lower ends of the inclination adjustment structure are respectively connected to the rear end of the sliding track and the support beam through a second set of hinge points. The inclination adjustment structure includes two threaded rods with opposite threads that are rotatably connected to the second set of hinge points. The two threaded rods are connected by a threaded sleeve. The inclination of the sliding track can be adjusted by adjusting the distance between the two threaded rods through the threaded sleeve.

9. The multi-station adjustable step-by-step conveying device according to claim 5, characterized in that: The return guide rail is detachably mounted on the mounting plate.

10. A multi-station adjustable step-by-step transfer method, characterized in that: The multi-station adjustable step-by-step conveying device according to any one of claims 1 to 9 comprises the following steps: The support beam rises and drives the transfer unit to receive the material at the high position of the sliding track. The support beam continues to rise and drives the lateral guide wheel to disengage from the return guide track. The transfer unit drives the material to slide down along the transfer track to the low position at the front end, and transports the material forward one workstation. Then the support beam descends. During the descent, the lateral guide wheel cooperates with the return guide track. The return guide track pulls the lateral guide wheel back to the high position, completing a stepping cycle. As the support beam continues to rise and fall, the stepping transfer of the material is completed.

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