Hydraulic oil cylinder piston rod assembling device

Abstract

The hydraulic oil cylinder piston rod assembling device comprises a rod fixing assembly, a rod moving assembly and a rod assembling assembly, the rod fixing assembly comprises a vertically-arranged fixing plate, a rod fixing clamp is arranged at the top end of the fixing plate, the rod moving assembly comprises a lifting plate and a transverse moving plate, and the lifting plate and the transverse moving plate are parallel to the fixing plate. A rod moving clamp is arranged at the top end of the transverse moving plate; the rod moving clamp is driven to the position where the central positioning axis of the rod moving clamp and the central positioning axis of the rod fixing clamp are collinear in the lifting and transverse moving process so as to transfer the clamped piston rod; the rod assembling assembly is used for assembling the piston rod clamped on the rod fixing clamp. According to the device, the assembly operation can be efficiently completed, the operations of transferring, centering, assembling, drilling and the like of the piston rod can be synchronously completed in the assembly operation, and the requirements of automatic line production and high-efficiency operation are met.

Description

Technical Field

[0001] The invention relates to a piston rod assembly line, in particular to a hydraulic cylinder piston rod assembly device. Background Art

[0002] In the coal mining industry, hydraulic supports are supporting equipment used underground in coal mines to control the mine pressure of the coal mining face. Their power accessories use hydraulic cylinders. The piston rods and related accessories of the hydraulic cylinders are generally large in size. The piston rods are assembled in a discrete and floor-to-ceiling manner using a mechanically assisted manual method. This assembly method has low assembly efficiency and is not easy to control the alignment of the piston, guide sleeve and piston rod during assembly, resulting in low assembly accuracy, which is now unable to meet assembly requirements.

[0003] For example, a hydraulic cylinder piston rod assembly device disclosed in Chinese utility model patent CN201020196145.0 is equipped with a chain plate conveyor line and many assembly stations are set on the conveyor line for centralized assembly. However, the assembly of the guide sleeve, piston, and drilling holes as well as the centering and alignment during the assembly process still rely mainly on manual labor.

[0004] For example, the automatic assembly equipment for the rear shock absorber piston rod disclosed in Chinese utility model patent CN202420184342.2 adopts a circular workbench and is provided with a rotating mechanism on the workbench. The workbench in the circumferential direction of the rotating mechanism is provided with a tightening mechanism, a riveting mechanism, a piston ring installation mechanism, a flipping mechanism, a spring installation mechanism, a guide seat installation mechanism, and an oil seal installation mechanism in sequence, which can realize the automatic assembly operation of the rear shock absorber piston rod; however, the equipment in the public document is obviously not suitable for the automatic assembly of large hydraulic cylinders.

[0005] For example, a piston rod assembly machine disclosed in Chinese invention patent CN201810426412.X is specially used for assembling the piston rod of the hydraulic cylinder used for the hydraulic support. It adopts vertical assembly, and it is easy to control the centering of the piston, guide sleeve and piston rod during assembly. The assembly precision is high, which is conducive to improving the assembly quality, and can replace manual operation to improve the efficiency of piston rod assembly. However, the piston rod needs to be lifted for loading and unloading, and the loading and unloading efficiency is low. Moreover, only a single piston rod can be assembled at a time, and only one pair of piston rods can be selected to assemble the piston or the guide sleeve during assembly, and the assembly efficiency is low.

[0006] Therefore, among the existing piston rod assembly devices, some can perform assembly operations automatically, but they are small assembly lines and are not suitable for larger piston rods; some can assemble large piston rods, but they cannot be assembled automatically and have low assembly efficiency; moreover, these devices usually cannot take into account both automated batch flow operations and high-efficiency assembly operations at the same time, and cannot simultaneously complete operations such as piston rod transfer, centering, assembly and drilling during assembly operations.

[0007] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the invention

[0008] The purpose of the present invention is to improve the assembly efficiency of large hydraulic cylinder piston rods in view of the shortcomings of the prior art, and to meet the needs of automation, intelligence, and batch flow operations of future assembly lines, thereby providing a hydraulic cylinder piston rod assembly device to efficiently complete the assembly of the piston rod.

[0009] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: comprising a rod fixing assembly and a rod moving assembly, the rod fixing assembly comprising a vertically arranged fixing plate, the top of which is provided with a rod fixing fixture; the rod moving assembly comprising a lifting plate and a transverse plate both arranged parallel to the fixing plate, the top of which is provided with a rod moving fixture; Wherein, the rod moving assembly is used to drive the piston rod to move along a first direction and a third direction, the first direction is parallel to the plate surface of the fixing plate, the third direction is perpendicular to the horizontal plane, and the first direction intersects with the third direction; the rod moving clamp and the rod fixing clamp are used to clamp and position the piston rod from the radial direction of the piston rod, and the central positioning axes of the rod fixing clamp and the rod moving clamp are parallel to the second direction and perpendicular to the third direction; The lifting plate is arranged on the plate surface of the fixed plate and is lifted and lowered along the third direction, and the transverse plate is arranged on the plate surface of the lifting plate and is transversely moved along the first direction; during the lifting and transverse movement, the rod moving fixture is driven to a position where the central positioning axis of the rod moving fixture is in line with the central positioning axis of the rod fixing fixture for transferring the clamped piston rod; Also included is a rod assembly component for assembling the piston rod clamped on the rod fixing fixture.

[0010] Based on the above, the rod fixing clamp and / or the rod moving clamp are set to be multiple; when the rod fixing clamp is set to be multiple, the spacing between the central positioning axes of adjacent rod fixing clamps is set to a step spacing, and the rod fixing clamps are arranged in a straight line along the first direction, and / or, when the rod moving clamp is set to be multiple, the spacing between the central positioning axes of adjacent rod moving clamps is set to the step spacing, and the rod moving clamps are arranged in a straight line along the first direction.

[0011] Based on the above, it also includes a rod front positioning platform and a rod rear placing platform, wherein the rod front positioning platform and the rod rear placing platform are respectively arranged on both sides of the fixing plate in the first direction, the rod front positioning groove provided on the rod front positioning platform is used to position the axial direction of the piston rod toward the second direction, and the rod rear placing groove provided on the rod rear placing platform is used to place the piston rod assembled by the rod assembly component.

[0012] Based on the above, the spacing between the central positioning axes of adjacent rod fixing clamps and the central positioning axes of the rod front positioning grooves is set to one of the step spacings, and / or the spacing between the central positioning axes of adjacent rod fixing clamps and the central positioning axes of the rod rear placement grooves is set to one of the step spacings; the rod moving clamp can be laterally moved with the transverse plate to directly below the rod front positioning groove and / or directly above the rod rear placement groove for moving the piston rod.

[0013] Based on the above, it also includes a rod drilling assembly, which includes a drilling slide, and the drilling slide slides along the second direction to approach the rod fixing fixture. The drilling slide is provided with an electric drill seat that slides along a direction perpendicular to the second direction, and the electric drill seat is provided with an electric drill. The electric drill is used to drill holes for the piston rod clamped on the rod fixing fixture.

[0014] Based on the above, it also includes a rod clamping roller group, which is arranged on a clamp for clamping the piston rod. The rod clamping roller group is used to clamp the piston rod and drive the piston rod to rotate around its own axis to cooperate with the rod drilling assembly to find the drilling position.

[0015] Based on the above, the rod assembly assembly includes an assembly slide, which slides along the second direction to approach the rod fixing fixture. The assembly slide is provided with a flip seat, and the flip seat is provided with a chuck. The chuck is used to clamp the assembly part, and the flip seat can drive the chuck to flip toward the rod fixing fixture. After flipping, the central axis of the chuck facing the rod fixing fixture is aligned with the central positioning axis of the rod fixing fixture.

[0016] Based on the above, the chuck is rotatably arranged on the flip seat, and the chuck is driven by a motor to rotate around its own central axis.

[0017] Based on the above, it also includes a rod rear end limiting assembly, the rod rear end limiting assembly and the rod assembly assembly are respectively arranged on both sides of the fixed plate in the second direction, and the rod rear end limiting assembly includes a limiting plate, which is used to abut against the end of the piston rod.

[0018] Based on the above, it also includes a rod loading and unloading assembly, which includes a sliding column sliding along the first direction, the sliding column is provided with a sliding beam sliding along the third direction, the lower surface of the sliding beam is provided with a rod loading and unloading clamp, the central positioning axis of the rod loading and unloading clamp is parallel to the second direction, the rod loading and unloading clamp is used to clamp the piston rod, and the rod loading and unloading assembly is for loading or unloading the rod fixing clamp.

[0019] The present invention has substantial characteristics and progress compared with the prior art. Specifically, the hydraulic cylinder piston rod assembly device of the present invention has the following advantages: the device can be adapted to the assembly operation of large piston rods, can efficiently complete the assembly operation, and can synchronously complete the transfer, centering, assembly and drilling of the piston rod during the assembly operation, meeting the requirements of automated batch flow operation and high-efficiency operation; during the transfer of the piston rod, the rod moving assembly and the like cooperate to efficiently and smoothly complete the transfer of the piston rod on the rod fixing fixture; during the centering of the piston rod and the assembly part, the rod fixing fixture and the rod moving fixture cooperate to quickly and accurately complete the centering, so as to guide the rapid completion of the assembly and processing process and improve the processing accuracy; during the assembly of the piston rod, the assembly part can be quickly and conveniently loaded for the rod assembly assembly, the matching force can be evenly distributed for the guide sleeve to improve the stability of the assembly, and the piston can be accurately tightened to avoid squeezing the thread; during the drilling of the piston rod, the drilling position can be accurately found, and the drilling operation can be synchronously completed with the assembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the overall structure of another embodiment of the present invention; Figure 3 is a schematic diagram of the overall structure of another embodiment of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the rod fixing assembly and the rod moving assembly of the present invention; Figure 5 It is a three-dimensional structural schematic diagram of the rod loading and unloading assembly of the present invention; Figure 6 is a front view of the rod loading and unloading assembly of the present invention; Figure 7It is a three-dimensional structural schematic diagram of the rod drilling assembly of the present invention; Figure 8 is a formal diagram of the rod assembly assembly of the present invention; Fig. 9 is a top view of the rod assembly assembly of the present invention; Fig.10 is a front view of another rod assembly assembly of the present invention; Fig.11 is a top view of another rod assembly assembly of the present invention; Fig.12 is a side view of the rod rear end limit assembly of the present invention; Fig.13 is a side view of a rod loading and unloading assembly of another embodiment of a rod assembly assembly of the present invention; In the figure, the reference numerals are: Rod fixing assembly 1, fixing plate 11, rod fixing fixture 12, assembly table 13; Rod moving assembly 2, lifting plate 21, traverse plate 22, rod moving fixture 23; Rod assembly component 3, assembly slide 31, flip seat 32, chuck 33, assembly slide rail 34, flip motor 35, rotation motor 36, press-fit electric cylinder 37; Rod front positioning platform 4, rod front positioning groove 41; A rod rear placement platform 5 and a rod rear placement slot 51; Rod drilling assembly 6, drilling slide 61, electric drill seat 62, electric drill 63, rod clamping roller assembly 64, 3D vision device 65, support plate 66, roller motor 67; The rod rear end limiting assembly 7, the limiting plate 71, the limiting slide rail 72, the limiting slide seat 73, the limiting motor 74, and the raising platform 75; Rod loading and unloading assembly 8, sliding column 81, sliding beam 82, rod loading and unloading fixture 83, column slide rail 84, beam slide rail 85; Piston rod 100, assembly part 200, guide sleeve 201, piston 202; The first direction is x, the second direction is y, and the third direction is z. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is further described in detail below through specific implementation methods.

[0022] like Figure 1-Figure 13As shown, the hydraulic cylinder piston rod assembly device of the present invention includes a rod fixing component 1, a rod moving component 2, a rod assembly component 3, a rod front positioning platform 4, a rod rear placement platform 5, a rod drilling component 6, a rod rear end limit component 7 and a rod loading and unloading component 8; the rod fixing component 1 is used to clamp, position and fix the piston rod 100; the rod moving component 2 is used to clamp and transfer the piston rod 100; the rod assembly component 3 is used to clamp the assembly part 200 and assemble the assembly part 200 to the piston rod 100 on the rod fixing component 1, and the assembly part 200 may include a guide sleeve 201 and a piston 202, etc.; the rod front positioning platform 4 is used to position the piston rod 100 to facilitate its transfer to the rod fixing component 1; the rod rear placement platform 5 places the assembled piston rod 100; the rod drilling component 6 is used as a ring for assembling the piston rod 100, and drills holes for the piston rod 100; the rod rear end limit component 7 is against the end of the piston rod 100 to facilitate the assembly of the piston rod 100; the rod loading and unloading component 8 includes functions such as auxiliary loading and unloading.

[0023] like Figure 4 As shown, the rod fixing assembly 1 includes a vertically arranged fixing plate 11, for example, the bottom end of the fixing plate 11 can be fixedly mounted on a corresponding assembly table 13; a rod fixing clamp 12 is provided at the top end of the fixing plate 11, and the rod fixing clamp 12 is used to clamp and position the piston rod 100 from the radial direction of the piston rod 100.

[0024] like Figure 4 As shown, the rod moving assembly 2 includes a lifting plate 21 and a transverse plate 22, both of which are arranged parallel to the fixed plate 11. The lifting plate 21 is arranged on the plate surface of the fixed plate 11, and the transverse plate 22 is arranged on the plate surface of the lifting plate 21. The lifting plate 21 is arranged between the fixed plate 11 and the transverse plate 22. The lifting plate 21 drives the transverse plate 22 to lift and lower. A rod moving clamp 23 is provided on the top of the transverse plate 22. The transverse plate 22 drives the rod moving clamp 23 to move laterally. The rod moving clamp 23 is used to clamp and position the piston rod 100 from the radial direction of the piston rod 100.

[0025] In the present device, the central positioning axis of the rod fixing fixture 12 is parallel to the central positioning axis of the rod moving fixture 23; it is worth pointing out that in the present invention, the central positioning axis of the rod fixture refers to: a reference datum line used to determine the clamping position of the rod workpiece (i.e., the piston rod 100), and this reference datum line coincides with the center axis of the clamped rod workpiece; the central positioning axis of the rod fixture serves as a reference for positioning the rod workpiece, which can ensure the accurate position of the rod workpiece in the fixture, and can also guide the assembly and processing process and improve the processing accuracy.

[0026] Based on the above, a first direction x, a second direction y, and a third direction z can be defined, specifically: the rod moving assembly 2 is used to drive the piston rod 100 to move along the first direction x and the third direction z, and the central positioning axis of the rod fixing clamp 12 and the rod moving clamp 23 is parallel to the second direction y; wherein, the first direction x is parallel to the plate surface of the fixed plate 11, the third direction z is perpendicular to the horizontal plane, the first direction x intersects with the third direction z, and the second direction y is perpendicular to the third direction z.

[0027] like Figure 4 As shown, the plate surfaces of the fixed plate 11, the lifting plate 21 and the transverse plate 22 are parallel to the first direction x and the third direction z; wherein the lifting plate 21 is arranged on the plate surface of the fixed plate 11 and is lifted and lowered along the third direction z, for example, the plate surface of the fixed plate 11 is provided with a lifting slide rail and a lifting rack arranged along the third direction z, the lifting plate 21 is slidably arranged on the lifting slide rail through a slider (or a slide seat), the lifting and lowering of the lifting plate 21 is driven by a motor, and the motor can drive the lifting and lowering of the lifting plate 21 through a gear and a rack; the transverse plate 22 is arranged on the plate surface of the lifting plate 21 and is transversely moved along the first direction x, for example, the plate surface of the lifting plate 21 is provided with a transverse slide rail and a transverse rack arranged along the first direction x, the transverse plate 22 is slidably arranged on the transverse slide rail through a slider (or a slide seat), the transverse movement of the transverse plate 22 is driven by a motor, and the motor can drive the transverse plate 22 to move transversely through a gear and a rack. Preferably, the lifting rails can use multiple rows of rails, and the lateral slide rails can use double rows of rails. Preferably, the length of the lifting plate 21 in the first direction x is greater than or equal to the length of the fixed plate 11 in the first direction x, subject to the lateral slide rail length required by the lateral slide plate 22.

[0028] Among them, the first direction x is one of the three directions of inclined upward, inclined downward, and parallel to the horizontal plane, that is, the lateral movement direction of the transverse plate 22 is one of the three directions of inclined upward, inclined downward, and parallel to the horizontal plane. In actual production, one of them can be selected according to needs; preferably, the first direction x is parallel to the horizontal plane, even if the lateral movement direction of the transverse plate 22 is parallel to the horizontal plane, even if the lateral movement direction of the transverse plate 22 is perpendicular to the lifting direction of the lifting plate 21, so that the rod moving clamp 23 can efficiently and smoothly complete the transfer of the piston rod 100.

[0029] During the lifting and lateral movement, the rod moving fixture 23 is driven to a position where the central positioning axis of the rod moving fixture 23 is collinear with the central positioning axis of the rod fixing fixture 12 to transfer the clamped piston rod 100, which can be to transfer the piston rod 100 on the rod moving fixture 23 to the rod fixing fixture 12, or to transfer the piston rod 100 on the rod fixing fixture 12 to the rod moving fixture 23. Of course, this is not a limitation on the transfer function of the rod moving fixture 23, and the rod moving fixture 23 can also be used to transfer the piston rod 100 on other devices or positions.

[0030] In order to enable the rod moving clamp 23 to smoothly transfer the piston rod 100, and to smoothly assemble the piston rod 100 clamped by the rod fixing clamp 12, the second direction y also needs to intersect with the plate surface of the fixing plate 11, so that the two ends of the piston rod 100 clamped by the rod fixing clamp 12 are respectively located on the outside of the two plate surfaces of the fixing plate 11; that is: the second direction y is parallel to the horizontal plane, and the second direction y is perpendicular to the plate surface of the fixing plate 11 or has an angle with the plate surface of the fixing plate 11; and the angle is preferably close to 90 degrees; preferably, the second direction y is perpendicular to the plate surface of the fixing plate 11 (that is, the angle is 90 degrees), and at this time the second direction y is perpendicular to the first direction x, so that the two ends of the piston rod 100 clamped by the rod fixing clamp 12 extend vertically to the outside of the two plate surfaces of the fixing plate 11, which is beneficial to improving the transportation and assembly efficiency of the piston rod 100.

[0031] like Figure 4 As shown, the rod fixing clamp 12 and the rod moving clamp 23 are used to clamp and position the piston rod 100 from the radial direction of the piston rod 100. For example, the top end surface and / or the plate surface of the fixed plate 11 are provided with a clamping slide rail for sliding the rod fixing clamp 12, and the top end surface and / or the plate surface of the transverse plate 22 are provided with a clamping slide rail for sliding the rod moving clamp 23, and the clamping slide rail is arranged in a direction perpendicular to the second direction y; preferably, the second direction y is perpendicular to the first direction x, and the clamping slide rail is horizontally arranged on the top end surface or the plate surface of the fixed plate 11, so as to ensure that the piston rod 100 is efficiently transferred and will not be interfered with.

[0032] Based on the above, the rod fixing clamp 12 and the rod moving clamp 23 can adopt a solution in which two-piece clamps approach or move away from each other to clamp the piston rod 100, and the two-piece clamps approach or separate from each other along the clamping slide rail; the two-piece clamps slide along the clamping slide rail, and the two-piece clamps are driven by a motor, and the motor can drive the two-piece clamps through a screw rod and a nut slider; the two clamps of the two-piece clamp can adopt a solution in which they are driven by a motor together, or a solution in which one clamp is fixed and the other clamp is driven by a motor.

[0033] Based on the above, when the rod fixing clamp 12 needs to be provided with a clamping slide rail on the plate surface of the fixed plate 11, the lifting plate 21 and the above-mentioned clamping slide rail need to be separately provided on the two plate surfaces of the fixed plate 11 to prevent the two from interfering with each other; similarly, when the rod moving clamp 23 needs to be provided with a clamping slide rail on the plate surface of the transverse plate 22, the clamping slide rail needs to be provided on the plate surface of the transverse plate 22 away from the lifting plate 21; preferably, the top surface and plate surface of the fixed plate 11 and the transverse plate 22 are provided with a clamping slide rail for sliding the rod moving clamp 23, that is, at least a double row of slide rails are provided to improve the sliding stability.

[0034] Based on the above, the rod fixing fixture 12 and the rod moving fixture 23 use rod fixtures of the same specifications and models to facilitate alignment of the central positioning axes of the two and improve the transfer efficiency of the rod moving fixture 23.

[0035] During the lifting and lowering process of the lifting plate 21 along the third direction z, the rod moving clamp 23 will stay at three horizontal heights. Among the three horizontal heights, the middle horizontal height is: the height at which the central positioning axes of the rod moving clamp 23 and the rod fixing clamp 12 are collinear; the lower horizontal height is: the lifting plate 21 drops a certain distance from the middle horizontal height, and when the transverse plate 22 moves transversely, the top of the rod moving clamp 23 will not interfere with the piston rod 100 clamped on the rod fixing clamp 12; the upper horizontal height is: the lifting plate 21 rises a certain distance from the middle horizontal height, and when the transverse plate 22 moves transversely, the top of the rod fixing clamp 12 will not interfere with the piston rod 100 clamped on the rod moving clamp 23.

[0036] The transfer process between the rod fixing assembly 1 and the rod moving assembly 2 includes the process of transferring the piston rod 100 on the rod moving fixture 23 to the rod fixing fixture 12 , and the process of transferring the piston rod 100 on the rod fixing fixture 12 to the rod moving fixture 23 .

[0037] The process of transferring the piston rod 100 on the rod moving fixture 23 to the rod fixing fixture 12 includes some or all of the following steps: S1. The lifting plate 21 rises and the transverse plate 22 moves transversely, so that the rod moving fixture 23 is located directly above the rod fixing fixture 12; S2. The lifting plate 21 descends, so that the central positioning axes of the rod moving fixture 23 and the rod fixing fixture 12 coincide; S3. The rod moving fixture 23 releases the piston rod 100, and the rod fixing fixture 12 clamps the piston rod 100; S4. The lifting plate 21 descends, the transverse plate 22 moves transversely, and the rod moving fixture 23 leaves.

[0038] The process of transferring the piston rod 100 on the rod fixing fixture 12 to the rod moving fixture 23 includes some or all of the following steps: S1. The lifting plate 21 descends and the transverse plate 22 moves transversely, so that the rod moving fixture 23 is located directly below the rod fixing fixture 12; S2. The lifting plate 21 rises so that the central positioning axes of the rod moving fixture 23 and the rod fixing fixture 12 coincide; S3. The rod fixing fixture 12 releases the piston rod 100, and the rod moving fixture 23 clamps the piston rod 100; S4. The lifting plate 21 rises and the transverse plate 22 moves transversely to move the piston rod 100 away.

[0039] like Figure 1-Figure 4As shown, the rod fixing fixture 12 and / or the rod moving fixture 23 can be set to multiple according to actual production needs; the rod moving fixture 23 can be set to multiple to simultaneously transfer multiple piston rods 100 during the lifting and lateral movement thereof; the rod fixing fixture 12 can be set to multiple to simultaneously assemble different assembly parts 200 for multiple piston rods 100.

[0040] When the rod fixing clamps 12 are set to be multiple, the spacing between the central positioning axes of adjacent rod fixing clamps 12 is equal, and the spacing is set to a fixed step spacing, and the rod fixing clamps 12 are arranged in a straight line along the first direction x; when the rod moving clamps 23 are set to be multiple, the spacing between the central positioning axes of adjacent rod moving clamps 23 is equal, and the spacing is also set to a fixed step spacing (consistent with the numerical value of the above-mentioned step spacing), and the rod moving clamps 23 are arranged in a straight line along the first direction x; of course, when both the rod fixing clamps 12 and the rod moving clamps 23 are set to be multiple, the spacing between the central positioning axes of adjacent rod fixing clamps 12 and the spacing between the central positioning axes of adjacent rod moving clamps 23 are both set to a fixed step spacing (consistent with the numerical value of the above-mentioned step spacing), and the rod fixing clamps 12 and the rod moving clamps 23 are arranged in a straight line along the first direction x.

[0041] When multiple rod fixing clamps 12 and / or rod moving clamps 23 are set, if the spacing between the rod fixing clamps 12 and the rod moving clamps 23 is inconsistent, it may cause interference during movement; when the spacing is consistent, especially when multiple rod moving clamps 23 are set, multiple rod moving clamps 23 can transfer multiple piston rods 100 at the same time, greatly improving the transfer efficiency. At this time, when the distance of the single lateral movement of the transverse plate 22 is a stepping spacing, that is, multiple driving rod moving clamps 23 transfer multiple piston rods 100.

[0042] The lateral movement interval of the lateral movement plate 22 on the lifting plate 21 is one step interval, so that the rod moving fixture 23 can smoothly transfer multiple piston rods 100.

[0043] Arranging multiple rod fixing clamps 12 and / or rod moving clamps 23 in a straight line along the first direction x is consistent with the lateral movement direction of the lateral movement plate 22, which can prevent interference problems from occurring during the process of the rod moving clamps 23 transferring the piston rod 100. It is also a prerequisite for multiple rod moving clamps 23 to transfer multiple piston rods 100 at the same time.

[0044] like Figure 1-Figure 3As shown, it also includes a rod front positioning platform 4 and a rod rear placing platform 5, which are respectively arranged on both sides of the fixed plate 11 in the first direction x. During the lifting and lateral movement, the rod moving fixture 23 is driven to the positions on both sides of the fixed plate 11 in the first direction x for transferring the piston rod 100 between the rod fixing fixture 12, the rod front positioning platform 4 and the rod rear placing platform 5.

[0045] The rod front positioning groove 41 provided on the rod front positioning platform 4 is used to position the axial direction of the piston rod 100 to face the second direction y, so as to facilitate the piston rod 100 thereon to be transferred to the rod fixing fixture 12, and the rod rear placement groove 51 provided on the rod rear placement platform 5 is used to place the piston rod 100 assembled by the rod assembly component 3; preferably, the axial direction of the piston rod 100 placed on the rod rear placement groove 51 is also facing the second direction y, so that when the piston rod 100 on the rod fixing fixture 12 is transferred to the rod rear placement platform 5, the rod rear placement groove 51 can be prevented from causing damage to the piston rod 100.

[0046] Based on the above, in the present device, the central positioning axis of the front rod positioning groove 41 and the central positioning axis of the rear rod placement groove 51 are both set to be parallel to the second direction y; it is worth pointing out that in the present invention, the central positioning axis of the front rod positioning groove 41 and the rear rod placement groove 51 refers to: a reference datum line for determining the placement position of the rod workpiece (i.e., the piston rod 100) in the groove, and this reference datum line coincides with the center axis of the clamped rod workpiece; the central positioning axis of the front rod positioning groove 41 and the rear rod placement groove 51 serve as a reference for positioning the rod workpiece, which can ensure the accurate position of the rod workpiece in the groove and facilitate the transfer of the rod workpiece.

[0047] Based on the above, a line robot, a truss robot (hereinafter referred to as a robot) or other devices can be used to place the piston rod 100 to be assembled on the front rod positioning table 4, or to move the assembled piston rod 100 on the rear rod placement table 5 away.

[0048] Under the premise that the rod moving fixture 23 is provided in plurality, it may be, for example, Figure 1 As shown, the spacing between the central positioning axis of the adjacent rod fixing fixture 12 and the central positioning axis of the rod front positioning groove 41 is set to a step spacing, and the rod front positioning groove 41 is set to prevent interference; or, the spacing between the central positioning axis of the adjacent rod fixing fixture 12 and the central positioning axis of the rod rear placement groove 51 is set to a step spacing, and the rod rear placement groove 51 is set to prevent interference; or, as Figure 3As shown, the spacing between the center positioning axis of the adjacent rod fixing fixture 12 and the center positioning axis of the rod front positioning groove 41, and the spacing between the center positioning axis of the adjacent rod fixing fixture 12 and the center positioning axis of the rod rear placement groove 51 are all set to a step spacing, and the front positioning groove 41 and the rod rear placement groove 51 are set to one to prevent interference. In this way, when the rod moving fixture 23 is used to transfer the piston rod 100, multiple piston rods 100 can be transferred at the same time. The specific steps are detailed in some embodiments described below.

[0049] The lateral movement spacing of the lateral movement plate 22 on the lifting plate 21 is a step spacing, so that the rod moving fixture 23 can smoothly transfer the piston rod 100 between the rod fixing fixture 12, the rod front positioning groove 41 and the rod rear placement groove 51.

[0050] Based on the above, the rod moving fixture 23 can be laterally moved with the transverse plate 22 to just below the rod front positioning groove 41 and / or just above the rod rear placement groove 51 for moving the piston rod 100, and multiple piston rods 100 can be moved at the same time; preferably, when the transverse plate 22 is required to be able to move laterally outside the plate surface of the lifting plate 21, the transverse movement motor can be set in the middle position of the transverse plate 22 to prevent the gear and rack from separating and falling off.

[0051] like Figure 5 , Figure 6 As shown, it also includes a rod loading and unloading assembly 8, and the rod loading and unloading assembly 8 includes a rod loading and unloading fixture 83. The rod loading and unloading fixture 83 is driven to slide along the first direction x and slide downward along the third direction z, so that the central positioning axis of the rod loading and unloading fixture 83 coincides with the central positioning axis of the rod fixing fixture 12; the rod loading and unloading fixture 83 is driven to slide along the first direction x and slide along the third direction z, and can be used for loading or unloading the rod fixing fixture 12 (that is, moving the piston rod 100 to the rod fixing fixture 12, or moving the piston rod 100 on the rod fixing fixture 12 away); of course, the rod loading and unloading assembly 8 can also be combined with some other functions, see some of the following embodiments for details.

[0052] The rod loading and unloading assembly 8 includes a sliding column 81 that slides along a first direction x. For example, a column slide rail 84 extending along the first direction x is installed on the assembly table 13, and a matching column slide seat is provided at the bottom end of the sliding column 81, and the column slide seat is driven by a motor; a sliding beam 82 that slides along a third direction z is provided on the sliding column 81. For example, a beam slide rail 85 extending along the third direction z is installed on the sliding column 81, and a matching beam slide seat is provided at the end of the sliding beam 82, and the beam slide seat is driven by a motor; the length direction of the sliding beam 82 points from the sliding column 81 to the rod fixing fixture 12. Preferably, the length direction of the sliding beam 82 is parallel to the second direction y, and the sliding column 81 and the rod assembly assembly 2 are separately arranged on the fixed plate 11 on both sides in the second direction y; a rod loading and unloading fixture 83 is provided on the lower surface of the end of the sliding beam 82 close to the rod fixing fixture 12, and the central positioning axis of the rod loading and unloading fixture 83 is parallel to the second direction y, and the rod loading and unloading fixture 83 is used to clamp the piston rod; the rod loading and unloading fixture 83 can adopt a rod clamp of the same specification and model as the rod fixing fixture 12 and the rod moving fixture 23, so as to facilitate the alignment of the central positioning axis of the three and improve the transfer efficiency; the specific related structure of the rod loading and unloading fixture 83 can refer to the rod fixing fixture 12 and the rod moving fixture 23, which will not be repeated here. The difference between the rod loading and unloading fixture 83 and the rod fixing fixture 12 and the rod moving fixture 23 is that the two-piece fixture of the rod loading and unloading fixture 83 is arranged below the clamping slide rail.

[0053] The rod loading and unloading assembly 8 can be used in conjunction with the rod front positioning platform 4 and the rod rear placement platform 5 to load or unload the rod fixing fixture 12; the specific loading process includes some or all of the following steps: S1. Make the rod loading and unloading fixture 83 coincide with the central positioning axis of the rod front positioning groove 41, and the rod loading and unloading fixture 83 clamps the piston rod 100 on the rod front positioning groove 41; S2. The sliding crossbeam 82 rises and the sliding column 81 translates, so that the rod loading and unloading fixture 83 is located directly above the rod fixing fixture 12; S3. The sliding crossbeam 82 descends, so that the central positioning axis of the rod loading and unloading fixture 83 and the rod fixing fixture 12 coincide with each other; S4. The rod loading and unloading fixture 83 releases the piston rod 100, and the rod fixing fixture 12 clamps the piston rod 100; S4. The sliding crossbeam 82 rises and the sliding column 81 translates, so that the rod loading and unloading fixture 83 is located directly above the rod front positioning groove 41; S4, the sliding crossbeam 82 descends, so that the rod loading and unloading fixture 83 coincides with the central positioning axis of the rod front positioning groove 41; then repeat S1. The specific unloading process is similar to the loading process, which will not be repeated here.

[0054] Based on the above, when the rod loading and unloading fixture 83 rises from the position coincident with the central positioning axis of the rod fixing fixture 12, it needs to rise a sufficient distance to prevent the piston rod 100 from interfering with the rod loading and unloading fixture 83, the rod fixing fixture 12, the rod front positioning platform 4 or the rod rear placement platform 5.

[0055] The coordination steps of the rod loading and unloading assembly 8, the rod front positioning platform 4, the rod rear placement platform 5 and the manipulator will not be repeated.

[0056] The rod fixing assembly 1, the rod moving assembly 2, the rod front positioning platform 4, the rod rear placement platform 5 and the rod loading and unloading assembly 8 are combined to transfer the piston rod 100, including the following embodiments.

[0057] like Figure 1 In one of the embodiments shown, the rod fixing clamp 12 and the rod moving clamp 23 are both provided in plurality, and the number of the rod fixing clamp 12 and the number of the rod moving clamp 23 are equal (the number shown in the figure is three), the spacing between adjacent rod front positioning grooves 41 and the central positioning axis of the rod moving clamp 23 is set to a step spacing, the rod front positioning groove 41 is set to one, and the rod loading and unloading assembly 8 unloads the assembled piston rod 100 from the rod fixing clamp 12.

[0058] This embodiment uses Figure 1 To illustrate the transfer steps, Figure 1 The state of the device shown is: a plurality of rod fixing clamps 12 all clamp the piston rod 100, an equal number of rod moving clamps 23 correspond one-to-one to the rod fixing clamps 12, and the central positioning axis of the rod moving clamps 23 coincides with that of the rod fixing clamps 12, and the rod moving clamps 23 are in a clamped state. In this embodiment, the transfer of the piston rod 100 includes some or all of the following steps: S1. The rod moving clamp 23 releases the piston rod 100; S2. The lifting plate 21 descends, and the transverse plate 22 transversely moves a stepping pitch toward the rod front positioning platform 4; S3. The lifting plate 21 rises, so that the central positioning axes of some rod moving clamps 23 and rod fixing clamps 12 coincide, the rod moving clamps 23 clamp the piston rod 100, the rod fixing clamp 12 releases the piston rod 100, and the rod loading and unloading assembly 8 transfers the assembled piston rod 100 from the rod fixing clamp 12 to the rod rear placement platform 5; S4. The lifting plate 21 continues to rise, and the transverse plate 22 transversely moves a stepping pitch toward the rod rear placement platform 5, and the manipulator places the piston rod 100 to be assembled on the rod front positioning platform 4; S5. The lifting plate 21 descends, so that the central positioning axes of the rod moving clamp 23 and the rod fixing clamp 12 coincide, and the rod fixing clamp 12 clamps the piston rod 100; then repeat S1.

[0059] The above steps are only used as preferred examples rather than limitations on the relevant steps. In the above steps, multiple rod fixing clamps 12 and multiple rod moving clamps 23 are clamped or loosened synchronously. Of course, it can also be set that one or some of the rod fixing clamps 12 and the rod moving clamps 23 can be clamped or loosened separately, so that the coordination of related components such as the rod loading and unloading assembly 8 and the rod fixing clamp 12 can be more flexible. The steps in the embodiments related to the transfer of the piston rod 100 shown below are also the same and will not be repeated.

[0060] In this embodiment, the transverse plate 22 moves transversely outward by a step spacing and inward by a step spacing in each cycle step. With the assistance of the rod loading and unloading assembly 8, the transfer of the piston rods 100 on all the rod fixing fixtures 12 can be completed in a single cycle step, with high transfer efficiency.

[0061] like Figure 2 In one of the embodiments shown, both the rod fixing clamp 12 and the rod moving clamp 23 are provided in plurality, and the number of the rod fixing clamp 12 is one more than the number of the rod moving clamp 23 (the number of the rod fixing clamps 12 shown in the figure is three, and the number of the rod moving clamps 23 is two), and two rod loading and unloading assemblies 8 are provided, one of which unloads the assembled piston rod 100 from the rod fixing clamp 12, and the other rod loading and unloading assembly 8 transfers the piston rod 100 on the rod front positioning groove 41 to the rod fixing clamp 12.

[0062] In this embodiment, the difference from the transfer step of the piston rod 100 in the previous embodiment is that the rod moving fixture 23 no longer transfers the piston rod 100 from the rod front positioning platform 4 to the rod fixing fixture 12, and the rod loading and unloading assembly 8 is used to transfer the piston rod 100 on the rod front positioning groove 41 to the rod fixing fixture 12. In this embodiment, the rod moving fixture 23 is only used to move the piston rod 100 on the rod fixing fixture 12 backward by a stepping pitch.

[0063] This embodiment uses Figure 2 To illustrate the transfer steps, Figure 2The state of the device shown is: the piston rod 100 is clamped on multiple rod fixing clamps 12, the rod fixing clamps 12 close to the rod front positioning platform 4 no longer correspond to the rod moving clamps 23, and the other rod fixing clamps 12 correspond to the rod moving clamps 23 one by one, and the correspondingly arranged rod moving clamps 23 coincide with the central positioning axis of the rod fixing clamps 12, and the rod moving clamps 23 are in a clamped state. In this embodiment, the transfer of the piston rod 100 includes some or all of the following steps: S1. The rod moving clamp 23 releases the piston rod 100; S2. The lifting plate 21 descends, and the transverse plate 22 transversely moves toward the rod front positioning platform 4 by a step spacing; S3. The lifting plate 21 rises, so that some of the rod moving clamps 23 coincide with the central positioning axis of the rod fixing clamps 12, the rod moving clamps 23 clamp the piston rod 100, the rod fixing clamps 12 release the piston rod 100, and the rod loading and unloading components 8 The assembled piston rod 100 is transferred from the rod fixing fixture 12 to the rod rear placement platform 5; S4. The lifting plate 21 continues to rise, and the transverse plate 22 moves horizontally toward the rod rear placement platform 5 by a stepping interval, and the rod loading and unloading assembly 8 transfers the piston rod 100 on the rod front positioning platform 4 to the rod fixing fixture 12; S5. The lifting plate 21 descends, so that the central positioning axes of the rod moving fixture 23 and the rod fixing fixture 12 coincide, and the rod fixing fixture 12 clamps the piston rod 100; then repeat S1.

[0064] In this embodiment, the transverse movement plate 22 moves horizontally a stepping pitch toward the rod front positioning platform 4 and a stepping pitch toward the rod rear placement platform 5 in each cycle step. With the assistance of the rod loading and unloading assembly 8, the transfer of the piston rods 100 on all the rod fixing fixtures 12 can be completed in a single cycle step, with high transfer efficiency.

[0065] like Figure 3 In one of the embodiments shown, the rod fixing clamps 12 and the rod moving clamps 23 are both provided in plurality, and the number of the rod fixing clamps 12 is one less than the number of the rod moving clamps 23 (the number of the rod fixing clamps 12 shown in the figure is three, and the number of the rod moving clamps 23 is four), the spacing between the central positioning axes of adjacent rod fixing clamps 12 and the front rod positioning grooves 41, and the spacing between the central positioning axes of adjacent rod fixing clamps 12 and the rear rod placement grooves 51 are both set to a step spacing, the front positioning grooves 41 and the rear rod placement grooves 51 are set to one, and the rod loading and unloading assembly 8 no longer assists in loading or unloading.

[0066] In this embodiment, the difference from the transfer step of the piston rod 100 in the previous embodiment is that the rod moving fixture 23 not only transfers the piston rod 100 from the rod front positioning platform 4 to the rod fixing fixture 12, but also transfers the assembled piston rod 100 from the rod fixing fixture 12 to the rod rear placement platform 5, and the rod loading and unloading assembly 8 no longer assists in loading or unloading.

[0067] This embodiment uses Figure 3 To illustrate the transfer steps, Figure 3 The state of the device shown is: the piston rod 100 is clamped on multiple rod fixing clamps 12, the extra rod moving clamp 23 coincides with the central positioning axis of the rod front positioning groove 41, the other rod moving clamps 23 correspond one by one to the rod fixing clamps 12, and the correspondingly arranged rod moving clamps 23 coincide with the central positioning axis of the rod fixing clamps 12, and the rod moving clamps 23 are in a clamped state. In this embodiment, the transfer of the piston rod 100 includes some or all of the following steps: S1. The rod fixing fixture 12 releases the piston rod 100; S2. The lifting plate 21 rises, and the transverse plate 22 moves horizontally toward the rod rear placement table 5 by a step spacing; S3. The lifting plate 21 descends, so that the central positioning axis of some rod moving fixtures 23 and the rod fixing fixture 12 coincide, the rod fixing fixture 12 clamps the piston rod 100, and the rod moving fixture 23 releases the piston rod 100; S4. The lifting plate 21 continues to descend, and the transverse plate 22 moves horizontally toward the rod front positioning table 4 by a step spacing; S5. The manipulator places the piston rod 100 to be assembled on the rod front positioning table 4, and the manipulator takes away the assembled piston rod 100 on the rod rear placement table 5; S6. The lifting plate 21 rises, so that the central positioning axis of some rod moving fixtures 23 and the rod fixing fixture 12 coincide, and the rod moving fixture 23 clamps the piston rod 100; then repeat S1.

[0068] In this embodiment, the transverse movement plate 22 moves horizontally a step spacing toward the rod front positioning platform 4 and a step spacing toward the rod rear placement platform 5 in each cycle step. The transfer of the piston rods 100 on all rod fixing fixtures 12 can be completed in a single cycle step without the auxiliary loading and unloading of the rod loading and unloading assembly 8, and has high transfer efficiency.

[0069] like Figure 8-Figure 11 As shown, the device also includes a rod assembly component 3, which is used to clamp the assembly part 200 and align the central axis of the assembly part 200 with the central positioning axis of the rod fixing fixture 12, and slide along the second direction y to assemble the piston rod 100 clamped on the rod fixing fixture 12; wherein the rod assembly component 3 specifically drives the assembly part 200 to flip so as to align the central axis of the assembly part 200 with the central positioning axis of the rod fixing fixture 12; the assembly part 200 may include a guide sleeve 201 and a piston 202, etc.; the rod assembly component 3 in the present device is mainly used to assemble the guide sleeve 201 and the piston 202 for the piston rod 100, and of course, a rod assembly component 3 that can assemble other types of assembly parts 200 can also be provided.

[0070] The rod assembly component 3 includes an assembly slide 31, which slides along the second direction y to approach the rod fixing fixture 12. For example, the assembly table 13 is provided with an assembly slide rail 34 extending along the second direction y, and the assembly slide 31 is driven by an assembly motor or a press-fitting electric cylinder to slide along the assembly slide rail 34; the assembly slide 31 is provided with a flip seat 32, for example, the flip seat 32 is arranged on the assembly slide 31 through a rotating shaft, and the flip seat 32 is driven by a flip motor 35 to flip on the assembly slide 31, and the flip motor 35 drives the flip seat 32 through a belt or a chain; the flip seat 32 is provided with a chuck 33, and the chuck 33 is used to clamp the assembly part 200. For example, the chuck 33 can use a manual chuck to clamp the assembly part 200 through manual operation, or an electric chuck can be used; the flip seat 32 can drive the chuck 33 to flip toward the rod fixing fixture 12. After flipping, the central axis of the chuck 33 facing the rod fixing fixture 12 is aligned with the central positioning axis of the rod fixing fixture 12. In this way, the piston rod 100 on the rod fixing fixture 12 and the assembly part 200 on the chuck 33 can be axially aligned. When the assembly slide 31 slides a certain distance along the second direction y, the assembly part 200 can be smoothly assembled to the piston rod 100.

[0071] For example, the flip seat 32 can drive the chuck 33 to flip 90 degrees, so that the chuck 33 flips from vertically upward to facing the rod fixing fixture 12. When the chuck 33 is vertically upward, the assembly part 200 can be placed on the chuck 33 manually or by a manipulator and clamped by the chuck 33. When the central axis of the flip seat 32 flips to face the second direction y, the assembly slide 31 can be driven to slide along the second direction y to assemble the piston rod 100. For example, a limiting mechanism can be set between the flip seat 32 and the assembly slide 31, so that the flip seat 32 can only flip at a specific angle to ensure the accuracy of the flip angle. In this way, the assembly part can be placed on the rod assembly component 3 quickly and conveniently.

[0072] In one embodiment, the relevant structure of the rod assembly assembly 3 for assembling the guide sleeve 201 for the piston rod 100 is as follows: Figure 8 , Fig. 9 As shown, the chuck 33 can rotate around its own axis, for example, the chuck 33 is installed on the flip seat 32 through a rotating shaft; the chuck 33 is driven by a rotating motor 36, and the rotating motor 36 drives the chuck 33 through gears; in this embodiment, the guide sleeve 201 is started to rotate before the guide sleeve 201 is assembled to the piston rod 201, so that the guide sleeve 201 is assembled to the piston rod 100 while rotating, which helps to improve the assembly accuracy, ensure that the fit between the guide sleeve 201 and the piston rod 100 is more accurate, avoid deviation or tilt during the assembly process, and make the assembly process smoother; based on the above, the drive motor 36 in this embodiment can adopt an ordinary motor, so that the chuck 33 can rotate, without the need for large torque, and there is no requirement for the accuracy of the motor speed and steering control.

[0073] In one embodiment, Figure 1-4 As shown, when assembling the guide sleeve 201, a driven roller is used to clamp the piston rod 100 on the rod fixing fixture 12 corresponding to the rod assembly component 3 of the assembled guide sleeve 201, so that the piston rod 100 can be driven to rotate by the rotation of the guide sleeve 201. By rotating the piston rod 100 along with the guide sleeve 201, the mating force can be more evenly distributed, thereby improving the stability of the assembly.

[0074] In one embodiment, the relevant structure of the rod assembly assembly 3 for assembling the piston rod 100 with the piston 202 is as follows: Fig.10 , Fig.11 As shown, the assembly slide 31 is driven by the press-fit electric cylinder 37 to slide along the assembly slide rail 34; the chuck 33 can rotate around its own axis, and the chuck 33 is driven by the rotary motor 36; in the present embodiment, the piston 202 and the piston rod 100 are fixed by threaded tightening. First, the piston 202 needs to be accurately close to the end of the piston rod 100. The press-fit electric cylinder 37 can be used to accurately control the sliding distance of the assembly slide 31, so as to prevent the thread from being damaged due to inaccurate sliding distance; after the piston 202 is accurately close to the end of the piston rod 100, the rotary motor 36 drives the chuck 33 to rotate so that the thread is butted and tightened; the rotary motor 36 adopts a servo motor, and a constant torque is set to perform the thread tightening action. A reducer, a torque sensor and other accessories can also be provided between the servo motor and the chuck 33 to perform the tightening action more accurately and avoid the phenomenon of squeezing the thread.

[0075] like Fig.12 , Fig.13 As shown, it also includes a rod rear end limit assembly 7. The rod rear end limit assembly 7 and the rod assembly assembly 3 are arranged on both sides of the fixing plate 11 in the second direction y. The rod rear end limit assembly 7 includes a limit plate 71. The limit plate 71 slides along the second direction y close to the rod fixing clamp 12. The limit plate 71 is used to abut against the end of the piston rod 100 when the rod assembly assembly 3 acts on the piston rod 100.

[0076] In addition, the rod rear end limit assembly 7 is also used to locate the position of the piston rod 100 in the second direction y, such as Figure 1 As shown, placing the piston rod 100 on the front rod positioning groove 41 can only position the axial direction of the piston rod 100 toward the second direction y, but cannot accurately position the position of the piston rod 100 in the second direction y; after the piston rod 100 is transferred from the front rod positioning platform 4 to the rod fixing fixture 12, the limit plate 71 is used to slide along the second direction y against the end of the piston rod 100, so as to adjust the position of the piston rod 100 in the second direction y, thereby facilitating the precise assembly of the rod assembly component 3.

[0077] In combination with some of the above-mentioned embodiments, when assembling the guide sleeve 201, a driven roller is used to clamp the piston rod 100 on the rod fixing fixture 12 corresponding to the rod assembly component 3. In addition to driving the piston rod 100 to rotate, the driven roller can also adjust the position of the piston rod 100 in the second direction y even if the driven roller clamps the piston rod 100 by setting the material of the roller surface of the driven roller; therefore, as a preference, the rod assembly component 3 for assembling the guide sleeve 201 is arranged at a position close to the rod front positioning platform 4, so that the position of the piston rod 100 in the second direction y can be positioned in the first assembly process.

[0078] In one embodiment, Fig.12 As shown, a raising platform 75 of a certain height is provided on the assembly table 13, and a limiting slide rail 72 extending along the second direction y is installed on the raising platform 75. A limiting slide seat 73 is matched with the limiting slide rail 72. The limiting plate 71 is vertically arranged on the limiting slide seat 73. The limiting slide seat 73 is driven by the limiting motor 74 to approach the end of the piston rod 100 on the rod fixing fixture 12 along the second direction y.

[0079] In one embodiment, Fig.13 As shown, the rod rear end limit assembly 7 is installed on the rod loading and unloading assembly 8, specifically, it is installed on the lower end surface of the sliding beam 82; the limit slide rail 72 is installed on the lower end surface of the sliding beam 82, and the limit plate 71 extends downward from the lower end surface of the sliding beam 82, and extends a sufficient distance so that the limit plate 71 is driven by the limit slide seat 73 to slide along the second direction y to approach the piston rod 100 on the rod fixing fixture 12. Even if the sliding beam 82 rises, it can also contact the end of the piston rod 100.

[0080] like Figure 7 As shown, a rod drilling assembly 6 is included. The rod drilling assembly 6 slides along the second direction y close to the rod fixing fixture 12 to drill a hole for the piston rod 100 on the rod fixing fixture 12 . The rod drilling assembly 6 includes a drilling slide 61, which slides along the second direction y to approach the rod fixing fixture 12. For example, a horizontal drilling slide rail extending along the second direction y is provided on the assembly table 13, and the drilling slide 61 is slidably arranged on the horizontal drilling slide rail. The drilling slide 61 is driven by a motor to approach the rod fixing fixture 12; an electric drill seat 62 which slides in a direction perpendicular to the second direction y is provided on the drilling slide 61. For example, a drilling lifting slide rail is also provided on the drilling slide 61. The electric drill seat 62 is slidably arranged on the drilling lifting slide rail, and the electric drill seat 62 is driven by a motor or an electric cylinder; an electric drill 63 is provided on the electric drill seat 62, and the electric drill 63 is used to drill holes for the piston rod 100 on the rod fixing fixture 12. For example, the drill bit of the electric drill 63 is orthogonal to the central positioning axis of the rod fixing fixture 12, and is used to drill radial holes for the piston rod 100.

[0081] In one embodiment, Figure 7 As shown, the electric drill seat 62 slides vertically upward along the third direction z to approach the piston rod 100. At the same time, a 3D vision device 65 is provided above the rod fixing clamp 12 to cooperate with the drill bit of the electric drill 63 to accurately locate the drilling position. The 3D vision device 65 can be set on a special support plate 66, and the support plate 66 can be set on the drilling slide 61 or the assembly table 13.

[0082] In one embodiment, the rod drilling assembly 6 also includes a rod clamping roller group 64 matched with the electric drill 63 and the 3D vision device 65. The rod clamping roller group 64 is arranged on a clamp for clamping the piston rod 100. The rod clamping roller group 64 includes an active roller with a central axis facing the second direction y. The active roller is driven by a roller motor 67. The rod clamping roller group 64 directly contacts and clamps the piston rod 100 on the rod clamp and drives the piston rod 100 to rotate around its own axis by a certain angle. In combination with the 3D vision device 65, the drill bit of the electric drill 63 can automatically find the drilling position; for example, the rod clamping roller group 64 can be arranged on the rod fixing clamp 12, or for example, as Figure 5 , Figure 6 , Fig.13 As shown, the rod clamping roller assembly 64 can be arranged on the rod loading and unloading fixture 83 .

[0083] In some embodiments, as preferred, Figure 1 As shown, the rod loading and unloading assembly 8 is provided with a rod clamping roller assembly 64 to cooperate with the rod drilling assembly 6 to align the drilling position.

[0084] In some embodiments, Figure 2 As shown, the two rod loading and unloading assemblies 8 respectively include a rod clamping roller group 64 and a rod rear end limit assembly 7, wherein the rod loading and unloading assembly 8 close to the rod front positioning platform 4 is provided with a rod rear end limit assembly 7, and the rod loading and unloading assembly 8 close to the rod rear placement platform 5 is provided with a rod clamping roller group 64.

[0085] In some embodiments, Figure 3 As shown, the rod loading and unloading assembly 8 is no longer used for loading or unloading the rod fixing assembly 1, but is only used to match the rod clamping roller assembly 64 to cooperate with the rod drilling assembly 6 to align the drilling position.

[0086] The hydraulic cylinder piston rod assembly device of the present invention can be adapted to the assembly operation of large piston rods and can complete the assembly operation efficiently. During the assembly operation, the transfer, centering, assembly and drilling of the piston rod can be completed synchronously, meeting the requirements of automated batch flow operation and high-efficiency operation. During the transfer of the piston rod, the rod moving assembly and the like cooperate to efficiently and smoothly complete the transfer operation of the piston rod on the rod fixing fixture. During the centering process of the piston rod and the assembly part, the rod fixing fixture and the rod moving fixture and the like cooperate to quickly and accurately complete the centering, so as to guide the rapid completion of the assembly and processing process and improve the processing accuracy. During the assembly process of the piston rod, the assembly part can be quickly and conveniently loaded into the rod assembly assembly, the matching force of the guide sleeve can be evenly distributed to improve the stability of the assembly, and the piston can be accurately tightened to avoid squeezing the thread. During the drilling process of the piston rod, the drilling position can be accurately found, and the drilling operation can be completed synchronously with the assembly process.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A hydraulic cylinder piston rod assembly device, characterized in that: The invention comprises a rod fixing assembly (1) and a rod moving assembly (2), wherein the rod fixing assembly (1) comprises a vertically arranged fixing plate (11), and a rod fixing fixture (12) is provided at the top end of the fixing plate (11); the rod moving assembly (2) comprises a lifting plate (21) and a transverse plate (22) both arranged parallel to the fixing plate (11), and a rod moving fixture (23) is provided at the top end of the transverse plate (22); The rod moving assembly (2) is used to drive the piston rod to move along a first direction and a third direction, the first direction is parallel to the plate surface of the fixing plate (11), the third direction is perpendicular to a horizontal plane, and the first direction intersects the third direction; the rod moving clamp (23) and the rod fixing clamp (12) are used to clamp and position the piston rod from the radial direction of the piston rod, and the central positioning axes of the rod fixing clamp (12) and the rod moving clamp (23) are both parallel to the second direction and perpendicular to the third direction; The lifting plate (21) is arranged on the plate surface of the fixed plate (11) and is lifted and lowered along the third direction, and the transverse plate (22) is arranged on the plate surface of the lifting plate (21) and is transversely moved along the first direction; during the lifting and transverse movement, the rod moving clamp (23) is driven to a position where the central positioning axis of the rod moving clamp (23) is collinear with the central positioning axis of the rod fixing clamp (12) so as to be used for transferring the clamped piston rod; It also includes a rod assembly component (3) for assembling the piston rod clamped on the rod fixing fixture (12).

2. The hydraulic cylinder piston rod assembly device according to claim 1, characterized in that: The rod fixing clamp (12) and / or the rod moving clamp (23) are provided in a plurality; when the rod fixing clamp (12) is provided in a plurality, the spacing between the central positioning axes of adjacent rod fixing clamps (12) is set as a step spacing, and the rod fixing clamps (12) are arranged in a straight line along the first direction; and / or, when the rod moving clamp (23) is provided in a plurality, the spacing between the central positioning axes of adjacent rod moving clamps (23) is set as the step spacing, and the rod moving clamps (23) are arranged in a straight line along the first direction.

3. The hydraulic cylinder piston rod assembly device according to claim 2, characterized in that: It also includes a rod front positioning platform (4) and a rod rear placement platform (5), wherein the rod front positioning platform (4) and the rod rear placement platform (5) are respectively arranged on both sides of the fixing plate (11) in the first direction, the rod front positioning groove (41) provided on the rod front positioning platform (4) is used to position the axial direction of the piston rod toward the second direction, and the rod rear placement groove (51) provided on the rod rear placement platform (5) is used to place the piston rod assembled by the rod assembly component (3).

4. The hydraulic cylinder piston rod assembly device according to claim 3, characterized in that: The spacing between the center positioning axes of adjacent rod fixing clamps (12) and the center positioning axes of the rod front positioning grooves (41) is set to one of the step spacings, and / or, the spacing between the center positioning axes of adjacent rod fixing clamps (12) and the center positioning axes of the rod rear placement grooves (51) is set to one of the step spacings; the rod moving clamp (23) can be laterally moved with the transverse plate (22) to the position directly below the rod front positioning groove (41) and / or directly above the rod rear placement groove (51) for transferring the piston rod.

5. The hydraulic cylinder piston rod assembly device according to claim 1, characterized in that: The invention also comprises a rod drilling assembly (6), wherein the rod drilling assembly (6) comprises a drilling slide (61), wherein the drilling slide (61) slides along the second direction to approach the rod fixing fixture (12), and an electric drill seat (62) is provided on the drilling slide (61) and slides along a direction perpendicular to the second direction, and an electric drill (63) is provided on the electric drill seat (62), and the electric drill (63) is used to drill a hole for the piston rod clamped on the rod fixing fixture (12).

6. The hydraulic cylinder piston rod assembly device according to claim 5, characterized in that: It also includes a rod clamping roller group (64), which is arranged on a clamp used to clamp the piston rod. The rod clamping roller group (64) is used to clamp the piston rod and drive the piston rod to rotate around its own axis to cooperate with the rod drilling assembly (6) to find the drilling position.

7. The hydraulic cylinder piston rod assembly device according to claim 1, characterized in that: The rod assembly component (3) comprises an assembly slide (31), the assembly slide (31) slides along the second direction to approach the rod fixing fixture (12), the assembly slide (31) is provided with a flip seat (32), the flip seat (32) is provided with a chuck (33), the chuck (33) is used to clamp the assembly part, the flip seat (32) can drive the chuck (33) to flip toward the rod fixing fixture (12), and after flipping, the central axis of the chuck (33) facing the rod fixing fixture (12) is aligned with the central positioning axis of the rod fixing fixture (12).

8. The hydraulic cylinder piston rod assembly device according to claim 7, characterized in that: The chuck (33) is rotatably mounted on the flip seat (32), and the chuck (33) is driven by a motor to rotate around its own central axis.

9. The hydraulic cylinder piston rod assembly device according to claim 7, characterized in that: It also includes a rod rear end limiting assembly (7), wherein the rod rear end limiting assembly (7) and the rod assembly assembly (3) are respectively arranged on two sides of the fixing plate (11) in the second direction, and the rod rear end limiting assembly (7) includes a limiting plate (71), and the limiting plate (71) is used to abut against the end of the piston rod.

10. The hydraulic cylinder piston rod assembly device according to any one of claims 1 to 9, characterized in that: It also includes a rod loading and unloading assembly (8), the rod loading and unloading assembly (8) including a sliding column (81) sliding along the first direction, the sliding column (81) is provided with a sliding beam (82) sliding along the third direction, the lower surface of the sliding beam (82) is provided with a rod loading and unloading clamp (83), the central positioning axis of the rod loading and unloading clamp (83) is parallel to the second direction, the rod loading and unloading clamp (83) is used to clamp the piston rod, and the rod loading and unloading assembly (8) is used to load or unload the rod fixing clamp (12).

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