Automatic grease injection equipment for small end of bearing

Abstract

The present invention discloses an automatic grease injection device for the small end of a bearing, comprising a base, a feeding plate, a feeding device, a weighing device, an NG discharge device, a grease injection device and a PLC, wherein the feeding plate, the feeding device, the weighing device, the NG discharge device, the grease injection device and the PLC are installed on the base, and the feeding plate is provided with a front weighing station, a front NG discharge station, a grease injection station, a rear weighing station and a rear NG discharge station from left to right, a weighing device is provided at the front weighing station and the rear weighing station, an NG discharge device is provided at the front NG discharge station and the rear NG discharge station, and a grease injection device is provided at the grease injection station, the feeding device is located on one side of the feeding plate, and the grease injection device is located on the other side of the feeding plate, and the feeding device, the weighing device, the NG discharge device and the grease injection device are connected to the PLC. The present invention adopts the small end of the bearing for automatic grease injection, has high processing efficiency, and the quality of the processed product is stable, and solves the problem of grease injection at the large end of the bearing.

Description

Technical Field

[0001] The invention relates to bearing processing, in particular to automatic grease injection equipment for the small end of a tapered roller bearing. Background Art

[0002] During the greasing process of tapered roller bearings, high requirements are placed on the greasing method and amount of the product, and precision greasing is required. The traditional method is to weigh the product manually, manually use the grease injection head to grease the small end of the bearing, and then weigh it manually again, calculate the difference before and after greasing, and get the greasing amount. The manual greasing method is difficult to ensure the cleanliness of the greasing, and there are problems such as unstable greasing amount and low greasing efficiency. For this reason, the market has launched a fully automatic greasing equipment that greases through the large end of the bearing, which greatly improves the problems of manual small end greasing. However, due to the bearing structure, the grease generally flows from the small end of the bearing to the large end of the bearing. Grease injection from the large end of the bearing will cause grease accumulation at the large end of the bearing, resulting in grease leakage, and will also cause a lack of grease at the small end of the bearing, affecting the lubrication effect. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides an automatic bearing small-end grease injection device which can inject grease into the bearing from the small end thereof, accurately control the amount of grease injection, improve the bearing grease injection efficiency, and enhance the bearing product quality.

[0004] The technical solution adopted by the present invention to solve its technical problems is as follows: automatic grease injection equipment for the small end of a bearing, comprising a base, a feeding plate, a feeding device, a weighing device, an NG discharge device, a grease injection device and a PLC, wherein the feeding plate, the feeding device, the weighing device, the NG discharge device, the grease injection device and the PLC are installed on the base, and a front weighing station, a front NG discharge station, a grease injection station, a rear weighing station and a rear NG discharge station are arranged on the feeding plate from left to right in sequence, a weighing device is arranged at the front weighing station and the rear weighing station, an NG discharge device is arranged at the front NG discharge station and the rear NG discharge station, a grease injection device is arranged at the grease injection station, the feeding device is located on one side of the feeding plate, and the grease injection device is located on the other side of the feeding plate, and the feeding device, the weighing device, the NG discharge device and the grease injection device are connected to the PLC;

[0005] The feeding plate is a rectangular plate, and a baffle I is provided on the side of the feeding plate close to the grease injection device;

[0006] The grease injection device is mainly composed of a grease injection mechanism I and a grease injection mechanism II. The grease injection mechanism I mainly includes a grease injection head I, a straight motion mechanism V, a straight motion mechanism VI and a conveying platform. The straight motion mechanism V is a vertical displacement mechanism, and the straight motion mechanism VI is a longitudinal displacement mechanism. The conveying platform is perpendicular to the feeding plate, and one end of the conveying platform is fixedly connected to the straight motion mechanism VI. A material transport gap for accommodating the conveying platform is provided on the feeding plate. The top surface of the conveying platform is flush with the top surface of the feeding plate. A baffle II is provided on the top of the conveying platform. The baffle II is perpendicular to the long side of the conveying platform. When the conveying platform is located in the feeding gap, the front of the baffle II is flush with the front of the baffle I of the feeding plate, and the front of the conveying platform is flush with the front of the feeding plate. The grease injection head I is fixed on the straight motion mechanism V. The grease injection head Ⅰ is located above the conveying platform, and the conveying platform makes a linear reciprocating motion between the grease injection head Ⅰ and the material conveying gap. The grease injection mechanism Ⅱ mainly includes the grease injection head Ⅱ and a clamp. The grease injection head Ⅱ and the clamp are fixed on the base, and the clamp makes a reciprocating motion between the grease injection head Ⅱ and the material conveying gap. The grease injection head Ⅰ and the grease injection head Ⅱ are mainly composed of a grease injection head body, a grease delivery tube and a metering pump. The metering pump is connected with the grease delivery tube. The grease injection head body is a cylinder, and a grease cavity is provided inside the grease injection head body. A grease delivery tube is fixed at one end of the grease injection head body, and the grease delivery tube is connected with the grease cavity. A cylindrical protrusion Ⅰ is provided in the middle of the other end of the grease injection head body, and a circular protrusion Ⅱ is provided on the edge. An annular grease injection port is provided between the protrusion Ⅰ and the protrusion Ⅱ near the protrusion Ⅱ, and the grease injection port is connected with the grease cavity.

[0007] Preferably, the feeding device is mainly composed of a linear motion mechanism I, a strip plate and a clamping block. The linear motion mechanism includes a transverse displacement mechanism and a longitudinal displacement mechanism. The longitudinal displacement mechanism is fixed on the transverse displacement mechanism, and the strip plate is fixed on the longitudinal displacement mechanism. The motion trajectory of the transverse displacement mechanism is parallel to the feeding plate, and the motion trajectory of the longitudinal displacement mechanism is perpendicular to the feeding plate. The strip plate is parallel to the feeding plate, and a plurality of clamping blocks are indirectly arranged on the strip plate. The clamping blocks are located above the feeding plate, and clamping notches are provided on the clamping blocks.

[0008] Preferably, the clamping notch is triangular.

[0009] Preferably, the weighing device is mainly composed of a weighing sensor, a load-bearing block with a "concave" cross-section, a lifting plate I and a linear motion mechanism II. The linear motion mechanism II is a vertical displacement mechanism. The load-bearing block is arranged on the load-bearing platform of the weighing sensor, and the lifting plate I is placed above the load-bearing block. The upper part of the load-bearing block passes through the lifting plate I through the hole opened on the lifting plate I. The lifting plate I is connected to the linear motion mechanism II. When the lifting plate I performs up and down reciprocating straight motion, the lifting plate I does not contact the load-bearing block. A weighing hole for accommodating the lifting plate I is opened on the feeding plate. When the lifting plate reaches the maximum lifting distance, the lifting plate I is flush with the feeding plate.

[0010] Preferably, the NG discharge device is mainly composed of a discharge plate, a lifting plate II and a straight-moving motion mechanism III. The straight-moving motion mechanism III is a vertical displacement mechanism. A lifting hole for accommodating the lifting plate II is opened on the feeding plate. The straight-moving motion mechanism III is located below the lifting plate II and is fixedly connected to the lifting plate II. The discharge plate is located above the lifting plate II and is perpendicular to the feeding plate. A discharge hole corresponding to the lifting plate II is provided on the discharge plate. A discharge push rod is provided on the discharge plate. The discharge push rod is parallel to the discharge plate. One end of the discharge push rod is fixedly connected to the straight-moving motion mechanism IV, and the other end is located in the discharge hole. The straight-moving motion mechanism IV is a longitudinal displacement mechanism.

[0011] The operation process and principle of the present invention: The present invention is most suitable for double-row tapered roller bearings. The movement of each moving mechanism, metering pump, clamp, etc. in the feeding device, weighing device, NG discharge device and grease injection device of the present invention is controlled by PLC. In the actual working process, the double-row tapered roller bearing to be processed (hereinafter referred to as the workpiece) is placed on the feeding plate, and the feeding device transfers the workpiece to the weighing station in front of the feeding plate. The weighing device weighs the workpiece. After weighing, the feeding device transfers the workpiece to the front NG discharge station. When the workpiece reaches the specified weight, the feeding device transfers the workpiece to the grease injection station. When the workpiece does not reach the specified weight, the NG discharge device is started to remove the workpiece from the feeding plate. When the workpiece arrives at the grease injection station, the clamp of the grease injection device II takes out the upper inner ring of the workpiece from the workpiece by internal clamping, and transfers it to the top of the grease injection head II of the grease injection device II. Then the clamp moves down to insert the protrusion I of the grease injection head II into the inner hole of the upper inner ring of the workpiece. The protrusion II is located at the small end support frame of the upper inner ring, and the grease injection port is aligned with the small end gap of the upper inner ring. The metering pump is started to complete the grease injection of the small end of the upper inner bearing. At the same time, the straight motion mechanism of the grease injection mechanism I VI starts, driving the conveyor table to transfer the workpiece with the upper inner ring taken out to the bottom of the grease injection head Ⅰ, and then the straight motion mechanism V drives the grease injection head Ⅰ to move downward, and the grease injection head Ⅰ enters the inner cavity of the workpiece, and the protrusion Ⅰ of the grease injection head Ⅰ is inserted into the inner hole of the lower inner ring of the workpiece, and the protrusion Ⅱ is located at the support frame of the small end of the lower inner ring, and the grease injection port is aligned with the gap of the small end of the lower inner ring, and the metering pump is started to complete the greasing of the small end of the lower inner bearing. After the greasing of the upper inner ring and the lower inner ring of the workpiece is completed, the conveyor table transports the workpiece back to the greasing station, and the clamp puts the upper inner ring back into the workpiece, and then the feeding device transfers the workpiece to the rear weighing station on the feeding plate, and the weighing device weighs the workpiece. After weighing, the feeding device transfers the workpiece to the rear NG discharge station. When the workpiece reaches the specified weight, the feeding device transfers the workpiece away to complete the greasing process of the workpiece. When the workpiece does not reach the specified weight, the NG discharge device is started to remove the workpiece from the feeding plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The present invention adopts a fully mechanical automated processing method during the entire workpiece grease injection process, which greatly improves the workpiece grease injection efficiency;

[0014] 2. In terms of quality control of workpiece processing, the present invention adopts a front and rear weighing detection design to comprehensively monitor the integrity of the workpiece before processing and the amount of grease injected into the workpiece after processing, effectively ensuring the stability of the quality of the workpiece after processing.

[0015] 3. In the process of greasing the workpiece, the present invention adopts the method of greasing the small end of the bearing and designs a grease injection head suitable for automatic greasing the small end of the bearing, which solves the problem of grease leakage in the existing greasing of the large end of the bearing and the problem of lack of grease at the small end of the bearing, and ensures the lubrication effect of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the automatic grease injection equipment for the small end of a bearing according to the present invention from a top view;

[0017] Figure 2 This is a front structural schematic diagram of the automatic grease injection equipment for the small end of a bearing of the present invention;

[0018] Figure 3 It is a schematic diagram of the side cross-sectional structure of the grease injection head of the automatic grease injection equipment for the small end of the bearing of the present invention;

[0019] Figure 4 It is a structural schematic diagram of the grease injection head I of the bearing small end automatic grease injection equipment of the present invention greases the small end of the inner ring below;

[0020] Figure 5 It is a structural schematic diagram of the grease injection head II of the bearing small end automatic grease injection equipment of the present invention for greasing the small end of the upper inner ring;

[0021] Figure 6 It is a schematic diagram of the side structure of the weighing device of the bearing small end automatic grease injection equipment of the present invention;

[0022] Figure 7 This is a schematic diagram of the side structure of the NG discharge device of the bearing small end automatic grease injection equipment of the present invention;

[0023] Figure 8 The present invention is a schematic block diagram of the circuit of the automatic grease injection device for the small end of a bearing. DETAILED DESCRIPTION

[0024] Embodiment 1, below combines Figure 1-8To further illustrate the present invention, the automatic grease injection equipment for the small end of the bearing includes a base 1, a feed plate 2, a feed device 3, a weighing device 4, an NG discharge device 5, a grease injection device 6 and a PLC. The PLC is a programmable logic controller, which is a digital operation electronic system specially designed for use in an industrial environment. It uses a programmable memory to store instructions for performing logical operations, sequential control, timing, counting and arithmetic operations, etc., and controls various types of mechanical equipment or production processes through digital or analog input and output. Mitsubishi FX series PLC is used in the present invention. A feeding plate, a feeding device, a weighing device, an NG discharge device, a grease injection device and a PLC are installed on the base. From left to right, a front weighing station 7, a front NG discharge station 8, a grease injection station 9, a rear weighing station 10 and a rear NG discharge station 11 are arranged on the feeding plate. A weighing device is arranged at the front weighing station and the rear weighing station. An NG discharge device is arranged at the front NG discharge station and the rear NG discharge station. A grease injection device is arranged at the grease injection station. The feeding device is located on one side of the feeding plate, and the grease injection device is located on the other side of the feeding plate. The feeding device, the weighing device, the NG discharge device and the grease injection device The device is connected to the PLC; the feeding plate is a rectangular plate, and a baffle Ⅰ21 is provided on the side of the feeding plate close to the grease injection device; the grease injection device is mainly composed of a grease injection mechanism Ⅰ61 and a grease injection mechanism Ⅱ62, and the grease injection mechanism Ⅰ mainly includes a grease injection head Ⅰ611, a straight motion mechanism Ⅴ612, a straight motion mechanism Ⅵ613 and a conveying platform 614, the straight motion mechanism Ⅴ is a vertical displacement mechanism, the straight motion mechanism Ⅵ is a longitudinal displacement mechanism, the conveying platform is perpendicular to the feeding plate, one end of the conveying platform is fixedly connected to the straight motion mechanism Ⅵ, and a material conveying gap for accommodating the conveying platform is provided on the feeding plate 22. The top surface of the conveying platform is flush with the top surface of the feeding plate. A baffle II 6141 is provided on the top of the conveying platform. The baffle II is perpendicular to the long side of the conveying platform. When the conveying platform is located in the feeding gap, the front of the baffle II is flush with the front of the baffle I of the feeding plate. The front of the conveying platform is flush with the front of the feeding plate. The grease injection head I is fixed on the straight motion mechanism V. The grease injection head I is located above the conveying platform. The conveying platform performs a straight reciprocating motion between the grease injection head I and the conveying gap. The grease injection mechanism II mainly includes a grease injection head II 621 and a clamp 622. The grease injection head II and the clamp are fixed on the base. The clamp is on the grease injection head. Ⅱ and the material transport gap, the grease injection head Ⅰ and grease injection head Ⅱ are mainly composed of a grease injection head body 601, a grease delivery tube 602 and a metering pump 603, the metering pump is connected to the grease delivery tube, the grease injection head body is a cylinder, a grease cavity 6011 is arranged inside the grease injection head body, a grease delivery tube is fixed to one end of the grease injection head body, the grease delivery tube is connected to the grease cavity, a cylindrical protrusion Ⅰ 6012 is arranged in the middle of the other end of the grease injection head body, a circular protrusion Ⅱ 6013 is arranged on the edge, an annular grease injection port 6014 is arranged between the protrusion Ⅰ and the protrusion Ⅱ near the protrusion Ⅱ, and the grease injection port is connected to the grease cavity.

[0025] Preferably, the feeding device is mainly composed of a linear motion mechanism I 31, a strip plate 32 and a clamping block 33. The linear motion mechanism includes a transverse displacement mechanism and a longitudinal displacement mechanism. The longitudinal displacement mechanism is fixed on the transverse displacement mechanism, the strip plate is fixed on the longitudinal displacement mechanism, the movement trajectory of the transverse displacement mechanism is parallel to the feeding plate, the movement trajectory of the longitudinal displacement mechanism is perpendicular to the feeding plate, the strip plate is parallel to the feeding plate, a plurality of clamping blocks are indirectly arranged on the strip plate, the clamping blocks are located above the feeding plate, and a clamping notch 331 is arranged on the clamping block. The workpiece is placed in the clamping notch by the longitudinal displacement mechanism of the linear motion mechanism I, and then the workpiece is displaced on the feeding plate by the transverse displacement mechanism of the linear motion mechanism I, thereby completing the feeding of the workpiece.

[0026] Preferably, the clamping notch is triangular.

[0027] Preferably, the weighing device is mainly composed of a weighing sensor 41, a load-bearing block 42 with a "concave" cross-section, a lifting plate I 43 and a linear motion mechanism II 44. The linear motion mechanism II is a vertical displacement mechanism. The load-bearing block is arranged on the load-bearing platform of the weighing sensor, and the lifting plate I is placed above the load-bearing block. The upper part of the load-bearing block passes through the lifting plate I through the hole opened on the lifting plate I. The lifting plate I is connected to the linear motion mechanism II. When the lifting plate I performs up and down reciprocating straight motion, the lifting plate I does not contact the load-bearing block. A weighing hole 23 for accommodating the lifting plate I is opened on the feeding plate. When the lifting plate reaches the maximum lifting distance, the lifting plate I is flush with the feeding plate. The workpiece is placed on lifting plate Ⅰ through the feeding device, and then driven by the linear motion mechanism Ⅱ, lifting plate Ⅰ descends, and the workpiece falls from lifting plate Ⅰ onto the load-bearing block. The weighing sensor weighs the workpiece. After weighing, driven by the linear motion mechanism Ⅱ, lifting plate Ⅰ rises, and the workpiece returns to lifting plate Ⅰ. When lifting plate Ⅰ is flush with the feeding plate, the feeding device transfers the workpiece to the next workstation.

[0028] Preferably, the NG discharge device is mainly composed of a discharge plate 51, a lifting plate II 52 and a straight motion mechanism III 53. The straight motion mechanism III is a vertical displacement mechanism. A lifting hole 24 for accommodating the lifting plate II is opened on the feeding plate. The straight motion mechanism III is located below the lifting plate II and is fixedly connected to the lifting plate II. The discharge plate is located above the lifting plate II and is perpendicular to the feeding plate. A discharge hole 511 corresponding to the lifting plate II is provided on the discharge plate. When the lifting plate II is not moved, the top surface of the lifting plate II is flush with the top surface of the feeding plate. When the lifting plate II is at the maximum moving distance, the top surface of the lifting plate II is flush with the top surface of the discharge plate. Limit baffles are provided on both sides of the discharge plate to form a groove. A discharge push rod 54 is provided in the groove. The discharge push rod is parallel to the discharge plate. One end of the discharge push rod is fixedly connected to the straight motion mechanism IV 55, and the other end is located at the discharge hole. The straight motion mechanism IV is a longitudinal displacement mechanism. When the feeding device places the workpiece on the lifting plate II, driven by the straight motion mechanism III, the lifting plate II rises, the workpiece passes through the discharge hole and is placed on the discharge hole. Driven by the straight motion mechanism IV, the discharge push rod transfers the workpiece from the lifting plate II to the discharge plate, completing the discharge of the NG workpiece.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. An automatic grease injection device for the small end of a bearing, comprising a base (1), a feeding plate (2), a feeding device (3), a weighing device (4), an NG discharge device (5), a grease injection device (6) and a PLC, characterized in that: A feeding plate, a feeding device, a weighing device, an NG discharge device, a grease injection device and a PLC are installed on a base. A front weighing station (7), a front NG discharge station (8), a grease injection station (9), a rear weighing station (10) and a rear NG discharge station (11) are arranged on the feeding plate from left to right. A weighing device is arranged at the front weighing station and the rear weighing station. An NG discharge device is arranged at the front NG discharge station and the rear NG discharge station. A grease injection device is arranged at the grease injection station. The feeding device is located on one side of the feeding plate, and the grease injection device is located on the other side of the feeding plate. The feeding device, the weighing device, the NG discharge device and the grease injection device are connected to the PLC. The feeding plate is a rectangular plate, and a baffle plate I (21) is provided on one side of the feeding plate close to the grease injection device; The grease injection device mainly consists of a grease injection mechanism I (61) and a grease injection mechanism II (62). The grease injection mechanism I mainly includes a grease injection head I (611), a straight motion mechanism V (612), a straight motion mechanism VI (613) and a conveying platform (614). The straight motion mechanism V is a vertical displacement mechanism, and the straight motion mechanism VI is a longitudinal displacement mechanism. The conveying platform is perpendicular to the feeding plate, and one end of the conveying platform is fixedly connected to the straight motion mechanism VI. The feeding plate is provided with a material transport gap (22) for accommodating the conveying platform. The top surface of the conveying platform is flush with the top surface of the feeding plate. A baffle II (6141) is provided on the top of the conveying platform. The baffle II is perpendicular to the long side of the conveying platform. When the conveying platform is located in the feeding gap, the front of the baffle II is flush with the front of the baffle I of the feeding plate, and the front of the conveying platform is flush with the front of the feeding plate. The grease injection head I is fixed on the straight motion mechanism V. The grease injection head I is located at the conveying platform. The conveying platform performs linear reciprocating motion between the grease injection head I and the material transport gap. The grease injection mechanism II mainly includes a grease injection head II (621) and a clamp (622). The grease injection head II and the clamp are fixed on the base. The clamp performs reciprocating motion between the grease injection head II and the material transport gap. The grease injection head I and the grease injection head II mainly consist of a grease injection head body (601), a grease delivery tube (602) and a metering pump (603). The metering pump is connected to the grease delivery tube. The grease injection head body is a cylinder. A grease cavity (6011) is provided inside the grease injection head body. A grease delivery tube is fixed at one end of the grease injection head body. The grease delivery tube is connected to the grease cavity. A cylindrical convex block I (6012) is provided in the middle of the other end of the grease injection head body. A circular convex block II (6013) is provided on the edge. An annular grease injection port (6014) is provided between the convex block I and the convex block II near the convex block II. The grease injection port is connected to the grease cavity. The feeding device is mainly composed of a linear motion mechanism I (31), a strip plate (32) and a clamping block (33), the linear motion mechanism comprising a transverse displacement mechanism and a longitudinal displacement mechanism, the longitudinal displacement mechanism is fixed on the transverse displacement mechanism, the strip plate is fixed on the longitudinal displacement mechanism, the movement trajectory of the transverse displacement mechanism is parallel to the feeding plate, the movement trajectory of the longitudinal displacement mechanism is perpendicular to the feeding plate, the strip plate is parallel to the feeding plate, a plurality of clamping blocks are indirectly arranged on the strip plate, the clamping blocks are located above the feeding plate, and clamping notches (331) are arranged on the clamping blocks; The weighing device mainly comprises a weighing sensor (41), a bearing block (42) having a concave cross section, a lifting plate I (43) and a linear motion mechanism II (44); the linear motion mechanism II is a vertical displacement mechanism; the bearing block is arranged on the bearing platform of the weighing sensor; the lifting plate I is placed above the bearing block; the upper part of the bearing block passes through the lifting plate I through a hole provided on the lifting plate I; the lifting plate I is connected to the linear motion mechanism II; when the lifting plate I performs up and down reciprocating straight motion, the lifting plate I does not contact the bearing block; a weighing hole (23) for accommodating the lifting plate I is provided on the feeding plate; when the lifting plate reaches the maximum lifting distance, the lifting plate I is flush with the feeding plate; The bearing small end automatic grease injection equipment is suitable for double-row tapered roller bearings.

2. The automatic grease injection equipment for the small end of the bearing according to claim 1 is characterized in that: The clamping notch is triangular.

3. The automatic grease injection equipment for the small end of the bearing according to claim 1 is characterized in that: The NG discharge device is mainly composed of a discharge plate (51), a lifting plate II (52) and a straight motion mechanism III (53). The straight motion mechanism III is a vertical displacement mechanism. A lifting hole (24) for accommodating the lifting plate II is provided on the feeding plate. The straight motion mechanism III is located below the lifting plate II and is fixedly connected to the lifting plate II. The discharge plate is located above the lifting plate II and is perpendicular to the feeding plate. A discharge hole (511) corresponding to the lifting plate II is provided on the discharge plate. A discharge push rod (54) is provided on the discharge plate. The discharge push rod is parallel to the discharge plate. One end of the discharge push rod is fixedly connected to the straight motion mechanism IV (55), and the other end is located at the discharge hole. The straight motion mechanism IV is a longitudinal displacement mechanism.

Images