Shaping equipment and shaping method for rolled bushing

Abstract

A reshaping device and a reshaping method for a rolled bushing belong to the technical field of bushing processing, and are characterized in that the reshaping device is started after the rolled bushing is placed in a material channel: at a first station, the bushing is reshaped through cooperation of a core rod and a female die; the lining moves to a second station to complete cleaning, moves to a third station to complete height detection, and moves to a fourth station to complete forming of an inner chamfer of the lining; the lining moves to a fifth station, and inner diameter detection is completed through an inner diameter plug gauge; and the bushing moves to a sixth station, the bushing is pushed out of the female die through the push rod, and the bushing falls into a discharging slide way after being pushed out. According to the invention, a plurality of procedures are integrated on one device, so that the production period is greatly shortened, and a large amount of labor cost is saved.

Description

Technical Field

[0001] The invention relates to a rolled bushing shaping device and a shaping method, belonging to the bushing processing technical field. Background Art

[0002] Hydraulic pumps are widely used in the transmission systems of mechanical equipment and vehicles, and bushings are a necessary part of hydraulic pumps. During the operation of the hydraulic pump, the main shaft will be subjected to friction and wear from the liquid. The bushing can reduce this wear and thus extend the service life of the main shaft.

[0003] At present, manufacturers of this type of bushings generally curl the sheet into a columnar shape to form a rough finished product that is approximately cylindrical, and then insert a core rod into the inner ring of the rough finished product, and manually knock the outside of the bushing to make it round so that the inner diameter value is close to the processing requirements. However, this manual processing method is difficult to accurately control the inner and outer diameter values ​​and roundness of the bushing, which affects product quality, and has low production efficiency and high labor intensity. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned drawbacks and provide a rolled bushing shaping device and shaping method, so that the processed bushing products have a high pass rate, improve processing efficiency and reduce labor intensity.

[0005] The first object of the present invention is to provide a rolled bushing shaping equipment, which is characterized in that it includes a rotating mechanism, a feeding mechanism, a shaping mechanism, a cleaning mechanism, a height detection mechanism, an inner chamfering mechanism, an inner diameter detection mechanism, an ejection mechanism, a discharging mechanism, an equipment bracket and other components.

[0006] 1. A rotating mechanism, comprising a driving unit, a rotating disc and a central axis, wherein the central axis is installed at the center of the rotating disc, and a plurality of holes are arranged on the end surface of the rotating disc, and the plurality of holes are evenly distributed along the circumference; each hole penetrates the wall thickness of the rotating circle, and is provided with a concave die matching the rolled bushing, serving as different working positions for rolling the bushing; the driving unit is connected to the central axis, and drives the rotating disc to rotate, so as to switch between different working positions.

[0007] Furthermore, a positioning cylinder is provided above the rotating disc, and a plurality of positioning grooves are evenly provided on the outer circumference of the rotating disc. After the rotating disc completes rotation each time, that is, after the workstation is successfully switched, the output shaft of the positioning cylinder extends out and cooperates with the corresponding positioning groove to position the rotating disc circumferentially to prevent it from rotating during processing at a certain workstation.

[0008] Furthermore, six holes are provided on the rotating disc, each of which has a built-in die matching the rolled bushing. Through the rotation of the rotating disc, the rolled bushing in the die enters the following stations, which are, in order, a shaping station, a cleaning station, a height detection station, an inner chamfering station, an inner diameter detection station, and a push-out station.

[0009] Furthermore, symmetrically arranged positioning bearings are provided on both sides of the rotating disc, and the positioning bearings on both sides are in contact with the end faces of the rotating disc respectively to clamp and fix the rotating disc to axially position the rotating disc and prevent it from horizontal displacement or offset.

[0010] 2. A feeding mechanism, comprising an inclined material channel, wherein the inlet end of the material channel is higher than the outlet end, and the outlet end of the material channel corresponds to a certain die position on the rotating disc.

[0011] Furthermore, the material channel includes two L-shaped plates, the vertical parts of the two L-shaped plates are arranged at intervals, and the horizontal parts of the two L-shaped plates partially overlap to form a channel for the rolled bushing to roll; a through hole is set in the horizontal part of one of the L-shaped plates, and a waist-shaped hole is set in the horizontal part of the other L-shaped plate, and the two L-shaped plates are fixedly connected by bolts passing through the corresponding through holes and waist-shaped holes; the setting of the waist-shaped holes facilitates the adjustment of the width of the material channel to adapt to rolled bushings of different heights.

[0012] Furthermore, a guide platform is provided at the outlet end of the material channel, and the guide platform is composed of a horizontal portion, a V-shaped portion, and a vertical portion. The horizontal portion is connected to the outlet end of the material channel, and the V-shaped portion is located between the horizontal portion and the vertical portion, and is located at the outer end of the rotating disc corresponding to the concave die. The vertical portion is used to limit the position of the rolled bushing. The rolled bushing enters from the material channel, passes through the horizontal portion, and is in the V-shaped portion, where it waits for the shaping mechanism to push the rolled bushing into the concave die.

[0013] Furthermore, a material baffle plate, a material discharge plate, a material baffle cylinder and a material discharge cylinder are provided in the middle of the material channel; the material baffle plate and the material discharge plate are arranged at intervals on the material channel, and the distance between them is greater than the outer diameter of the rolled bushing; the material baffle plate and the material discharge plate are respectively connected to the material baffle cylinder and the material discharge cylinder, and the lifting and lowering are controlled by the corresponding cylinders.

[0014] Control the baffle plate to descend to prevent the subsequent rolled bushings in the material channel from moving forward; control the baffle plate to rise and the discharge plate to descend, and a rolled bushing enters between the two plates and waits to enter the shaping station; control the baffle plate to descend and the discharge plate to rise, and send a rolled bushing to the shaping station.

[0015] 3. A shaping mechanism, including a shaping cylinder and a core rod. The shaping cylinder is located on one side of the rotating disc and is drivingly connected to the core rod. The output shaft of the shaping cylinder, the core rod, and the corresponding die on the rotating disc are coaxial. The core rod is extended by the shaping cylinder, and then the rolled bushing in the V-shaped portion of the guide table is sent into the die of the rotating disc. The core rod is retracted by the shaping cylinder, and the shaping work of the rolled bushing is completed at the same time.

[0016] Furthermore, the mandrel includes a mandrel body, a reducing section, a shaping section, and an introduction section in sequence; the mandrel body is connected to the shaping cylinder, the outer diameter of the reducing section gradually increases from the inner end to the outer end, the outer diameter of the shaping section matches the inner diameter of the rolled bushing, and the introduction section is chamfered in a circular arc; wherein the outer diameter of the inner end of the reducing section is smaller than the outer diameter of the mandrel body, forming a shaping step surface matching the end face of the rolled bushing, and the outer diameter of the outer end of the reducing section is equal to the outer diameter of the shaping section.

[0017] When the mandrel is extended, the introduction section facilitates the mandrel to enter the inner cavity of the rolled bushing; the mandrel continues to extend until the shaping step surface contacts the end face of the rolled bushing, and the shaping section pushes it into the die and shapes the rolled bushing, so that the rolled bushing fits the die; when the mandrel is retracted, the reducing section facilitates the separation of the mandrel and the rolled bushing.

[0018] 4. A cleaning mechanism comprises a pair of cleaning cylinders and a pair of cleaning nozzles. The pair of cleaning cylinders are respectively placed on both sides of the rotating disc. The pair of cleaning nozzles are respectively connected to the pair of cleaning cylinders through nozzle brackets. The cleaning nozzles are used to clean the inner wall of the rolled bushing to separate the attachments on the inner wall of the rolled bushing.

[0019] Furthermore, splash guards are respectively provided outside a pair of cleaning nozzles, and the splash guards are installed on the corresponding nozzle brackets; during cleaning, the cleaning nozzles are sent to the vicinity of both ends of the rolled bushing by the cleaning cylinder, and at the same time, the end faces of the splash guards are fitted with the end faces of the rotating disc to collect the liquid after cleaning.

[0020] 5. A height detection mechanism, comprising a pair of height detection cylinders, a limit block, a contact displacement sensor, and a limit shell; the pair of height detection cylinders are respectively located on both sides of the rotating disc, and are respectively driven and connected to the limit block and the limit shell; the limit block comprises a large diameter portion and a small diameter portion, the outer diameter of the large diameter portion is larger than the outer diameter of the rolled bushing, the outer diameter of the small diameter portion is smaller than the inner diameter of the rolled bushing, and a detection step surface is formed at the connection between the large diameter portion and the small diameter portion; the limit shell is in the shape of a hollow cylinder, and the contact displacement sensor is built into the inner cavity of the limit shell.

[0021] During height detection, the limit block and the probe of the contact displacement sensor cooperate to complete the height detection: First, move the limit block to one end of the die so that the detection step surface fits with the corresponding end face of the rolled bushing. At this time, the small diameter part of the limit block enters the inner cavity of the rolled bushing; then, drive the height detection cylinder on the other side to extend, so that the limit shell and the contact displacement sensor move toward the die together until the probe of the contact displacement sensor contacts the end face of the small diameter part of the limit block; then, continue to drive the height detection cylinder on this side to extend until the end face of the limit shell fits with the other end face of the rolled bushing. During this process, the probe of the contact displacement sensor produces a displacement; finally, compare the displacement of the probe of the contact displacement sensor with the set standard value. If it is qualified, it is a good product, and if it is unqualified, it is a defective product.

[0022] 6. An internal chamfering mechanism comprises a pair of chamfering cylinders and a pair of punches. The pair of chamfering cylinders are respectively located on both sides of a rotating disc. The pair of punches are respectively driven and connected to the pair of chamfering cylinders. A chamfering section is provided at the outer end of the punch. The size of the chamfering section matches the internal chamfer to be processed by the rolled bushing. The shape of the chamfering section is designed according to the actual processing requirements of the rolled bushing.

[0023] Furthermore, a pair of guide channels are provided, which are respectively installed on both sides of the rotating disc through a support frame, and the guide channels are located between the chamfering cylinder and the rotating disc. A limiting step matching the end face of the guide channel is also provided on the punch to prevent excessive displacement of the punch.

[0024] When pressing the inner chamfer, a pair of chamfering cylinders respectively drive a pair of punches to move toward the die, and the pair of punches move through the guide channel until the limiting step of the punch fits with the guide channel. At the same time, the chamfering section of the punch is pressed into the port of the rolled bushing to complete the pressed inner chamfering work on the rolled bushing.

[0025] The rounded corners of the chamfer inside the bushing can reduce friction with the shaft. By reducing unnecessary losses and friction, the overall efficiency of the hydraulic pump can be improved, making its operation more stable and reliable. Bushings play an important role in the hydraulic pump market. 7. The inner diameter detection mechanism includes an inner diameter plug gauge and an inner diameter detection cylinder. The inner diameter detection cylinder is installed on one side of the rotating disc, and the inner diameter detection cylinder drives the inner diameter plug gauge. The inner diameter detection cylinder sends the probe of the inner diameter plug gauge into the corresponding die of the rotating disc to detect the inner diameter of the rolled bushing. If it passes, it is a good product, and if it fails, it is a defective product.

[0026] 8. The ejection mechanism includes an ejection cylinder and a push rod. The ejection cylinder is installed on one side of the rotating disc and is connected to the push rod. The push rod is extended by the ejection cylinder, and the rolled bushing is separated from the corresponding die by the push rod, so that the rolled bushing enters the discharge mechanism.

[0027] Furthermore, the push rod includes a push rod body, a push-out section, and an introduction section; the outer diameter of the introduction section gradually increases from the outer end to the inner end, the outer diameter of the outer end of the introduction section is smaller than the inner diameter of the rolled bushing, and the outer diameter of the inner end of the introduction section is larger than the inner diameter of the rolled bushing; the push-out section is a cylindrical shape with equal diameter, and its outer diameter is equal to the outer diameter of the inner end of the introduction section and smaller than the inner diameter of the die; the outer diameter of the push-out section is smaller than the outer diameter of the push rod body, and the outer diameter of the push rod body is larger than the outer diameter of the die, forming a stripping step surface to prevent excessive displacement.

[0028] When pushing out the rolled bushing, the pushing cylinder extends the push rod so that the lead-in section contacts the end face of the rolled bushing; the pushing cylinder continues to extend until the step surface fits the end face of the die. Since the sum of the heights of the lead-in section and the push-out section is greater than or equal to the height of the die, the rolled bushing is pushed out and separated from the die.

[0029] 9. The discharging mechanism comprises a slideway arranged to be inclined downward, wherein the highest end of the slideway is arranged opposite to the push rod and corresponds to a certain position of a concave die on the rotating disc, and the push cylinder is extended to push the rolled bushing into the slideway through the push rod.

[0030] Furthermore, a defective product rejection mechanism is provided, including a discharge plate, a defective product collection frame, a rejection cylinder, and a connecting rod assembly; a discharge port is provided in the middle of the slide, the discharge plate is installed at the discharge port, one end of the discharge plate is rotatably connected to the slide, and the other end is connected to the output shaft of the rejection cylinder through the connecting rod assembly, and the defective product collection frame is located below the discharge port.

[0031] If there are defective products in the height detection mechanism and the inner diameter detection mechanism, the control unit controls the rejection cylinder to extend, and drives the discharge plate to flip open through the connecting rod assembly, and the defective products fall from the discharge port in the middle of the slide into the defective product collection frame below.

[0032] 10. A control unit is connected to the contact displacement sensor, the inner diameter plug gauge, etc., and controls the working state of the connected drive unit and each cylinder respectively.

[0033] The second object of the present invention is to provide a method for shaping a rolled bushing, characterized in that the rolled bushing is placed on a material channel and then the device is started: In the first station, the shaping mandrel moves toward the die, and the shaping step surface of the mandrel contacts the end surface of the bushing to push the rolled bushing into the die. When the mandrel returns to the initial position, the shaping section of the mandrel cooperates with the die to complete the shaping of the bushing. The rotating mechanism rotates to move the bushing to the second station, and the cleaning mechanism cleans the inner wall of the bushing; The rotating mechanism rotates to move the bushing to the third station, controls the limit block to move toward the die, pushes the bushing to the position to be tested, and then the contact displacement sensor moves toward the die to complete the test in cooperation with the limit block. The test result is compared with the standard value. After the test is completed, the limit block and the sensor are reset; The rotating mechanism rotates to move the bushing to the fourth station, and the punches for pressing the inner chamfers on both sides of the die move toward the die at the same time. After reaching the set position, the inner chamfers of the bushing are formed, and then the punches on both sides are reset; The rotating mechanism rotates to move the bushing to the fifth station, and the inner diameter plug gauge moves toward the die. After reaching the inner diameter area of ​​the bushing, the inner diameter size is detected, and then the inner diameter plug gauge is reset; The rotating mechanism rotates to move the bushing to the sixth station, and the push rod mechanism moves toward the die, and the bushing is pushed out of the die through the stripping step surface of the push rod contacting the end face of the bushing; after being pushed out, the bushing falls into the discharge slide, completing this production cycle.

[0034] The present invention solves the problem of manual processing of such rolled bushings. Different bushing product models are adapted by changing the die, core rod, inner chamfering punch, push rod and material channel width, and multiple processes are integrated into one device, which greatly reduces the production cycle and saves a lot of labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention (without the equipment bracket); Figure 3 It is a schematic diagram of the structure of the present invention (excluding the equipment support and the feeding mechanism); Figure 4 It is a schematic diagram of each working station on the rotating disk in the present invention; Figure 5 It is a structural schematic diagram of the rotating disk in the present invention; Figure 6 It is a schematic diagram of each station on the rotating disc in the present invention (excluding the support frame in the inner chamfering mechanism); Figure 7 It is a schematic diagram of the connection between the feeding mechanism and the shaping mechanism in the present invention; Figure 8 It is a structural schematic diagram of the feeding mechanism in the present invention; Fig. 9 It is a structural schematic diagram of the shaping mechanism in the present invention; Fig.10 It is a structural schematic diagram of the cleaning mechanism in the present invention; Fig.11 It is a structural schematic diagram of the height detection mechanism in the present invention; Fig.12It is a structural schematic diagram of the medium-pressure internal chamfering mechanism of the present invention; Fig.13 It is a structural schematic diagram of the medium-pressure internal chamfering mechanism of the present invention (excluding the support frame); Fig.14 It is a structural schematic diagram of the inner diameter detection mechanism in the present invention; Fig.15 It is a structural schematic diagram of the ejection mechanism in the present invention; Fig.16 It is a structural schematic diagram of the discharging mechanism in the present invention; In the figure: drive unit 1, rotating disc 2, positioning groove 2-1, central axis 3, positioning cylinder 4, die 5, material channel 6, L-shaped plate 6-1, waist-shaped hole 6-2, material guide table 7, horizontal part 7-1, V-shaped part 7-2, vertical part 7-3, baffle plate 8, discharge plate 9, baffle cylinder 10, discharge cylinder 11, shaping cylinder 12, mandrel 13, mandrel body 13-1, diameter reducing section 13-2, shaping section 13-3, introduction section 13-4, cleaning cylinder 14, cleaning nozzle 15, splash cover 16, height detection cylinder 17, limit block 1 8. Large diameter part 18-1, small diameter part 18-2, contact displacement sensor 19, limit shell 20, chamfering cylinder 21, punch 22, chamfering section 22-1, limit step 22-2, guide channel 23, support frame 24, inner diameter plug gauge 25, inner diameter detection cylinder 26, push cylinder 27, push rod 28, push rod body 28-1, push section 28-2, introduction section 28-3, slide 29, discharge plate 30, defective product collection frame 31, rejection cylinder 32, connecting rod assembly 33, rolled bushing 34, equipment bracket 35, positioning bearing 36. DETAILED DESCRIPTION

[0036] Example 1 A rolled bushing shaping device comprises: a rotating mechanism, a feeding mechanism, a shaping mechanism, a cleaning mechanism, a height detection mechanism, an inner chamfering mechanism, an inner diameter detection mechanism, a pushing mechanism, and a discharging mechanism.

[0037] 1. The rotating mechanism includes a driving unit 1, a rotating disc 2, and a central shaft 3. The central shaft is installed at the center of the rotating disc. Six holes are arranged on the end surface of the rotating disc. The six holes are evenly distributed along the circumference and are respectively built with a concave die 5 matching the rolled bushing. The driving unit is connected to the central shaft to drive the rotating disc to rotate to switch different workstations. The workstations are, in order, a shaping workstation, a cleaning workstation, a height detection workstation, an inner chamfering workstation, an inner diameter detection workstation, and a push-out workstation.

[0038] In one embodiment of the present invention, a positioning cylinder 4 is provided above the rotating disc 2, and six positioning grooves 2-1 are evenly provided on the outer circumferential surface of the rotating disc. After each rotation of the rotating disc, that is, after the station switching is successful, the output shaft of the positioning cylinder extends out and snaps into the corresponding positioning groove to complete the circumferential positioning.

[0039] In one embodiment of the present invention, symmetrically arranged positioning bearings 36 are provided on both sides of the rotating disc. The positioning bearings on both sides are in contact with the end faces of the rotating disc respectively to clamp and fix the rotating disc to axially position the rotating disc to prevent it from horizontal displacement or offset.

[0040] 2. A feeding mechanism comprises a tilted material channel 6, wherein the inlet end of the material channel is higher than the outlet end, and the outlet end of the material channel corresponds to a certain die position on the rotating disc.

[0041] In one embodiment of the present invention, the material channel includes two L-shaped plates 6-1, the vertical parts of the two L-shaped plates are arranged at intervals, and the horizontal parts of the two L-shaped plates partially overlap to form a channel for the rolled bushing to roll; a through hole is set in the horizontal part of one of the L-shaped plates, and a waist-shaped hole 6-2 is set in the horizontal part of the other L-shaped plate, and the two L-shaped plates are fixedly connected by bolts passing through the corresponding through holes and waist-shaped holes.

[0042] In one embodiment of the present invention, a guide platform 7 is provided at the outlet end of the material channel, and the guide platform is composed of a horizontal portion 7-1, a V-shaped portion 7-2, and a vertical portion 7-3. The horizontal portion is connected to the outlet end of the material channel, the V-shaped portion is located between the horizontal portion and the vertical portion, and is located at the outer end of the corresponding die of the rotating disc, and the vertical portion is used to limit the position of the rolled bushing. The rolled bushing enters from the material channel, passes through the horizontal portion, and is in the V-shaped portion, where it waits for the shaping mechanism to push the rolled bushing into the die.

[0043] In one embodiment of the present invention, a material baffle plate 8, a material discharge plate 9, a material baffle cylinder 10, and a material discharge cylinder 11 are also provided in the middle of the material channel; the material baffle plate and the material discharge plate are arranged at intervals in the material channel, and the distance between them is greater than the outer diameter of the rolled bushing; the material baffle plate and the material discharge plate are respectively connected to the material baffle cylinder and the material discharge cylinder, and the corresponding cylinders control the lifting and lowering.

[0044] Control the baffle plate to descend to prevent the subsequent rolled bushing in the material channel from moving forward; control the baffle plate to rise and the discharge plate to descend, and a rolled bushing enters between the two plates; control the baffle plate to descend and the discharge plate to rise, and send a rolled bushing to the shaping station.

[0045] 3. The shaping mechanism includes a shaping cylinder 12 and a core rod 13. The shaping cylinder is located on one side of the rotating disc and is drivingly connected to the core rod. The output shaft of the shaping cylinder, the core rod, and the corresponding concave mold on the rotating disc are coaxial.

[0046] In one embodiment of the present invention, the core rod includes a core rod body 13-1, a reducing section 13-2, a shaping section 13-3, and an introduction section 13-4 in sequence; the core rod body is connected to the shaping cylinder, the outer diameter of the reducing section gradually increases from the inner end to the outer end, the outer diameter of the shaping section matches the inner diameter of the rolled bushing, and the introduction section is chamfered in a circular arc; wherein, the outer diameter of the inner end of the reducing section is smaller than the outer diameter of the core rod body, forming a shaping step surface matching the end face of the rolled bushing, and the outer diameter of the outer end of the reducing section is equal to the outer diameter of the shaping section.

[0047] 4. The cleaning mechanism comprises a pair of cleaning cylinders 14 and a pair of cleaning nozzles 15. The pair of cleaning cylinders are respectively arranged on both sides of the rotating disc. The pair of cleaning nozzles are respectively connected to the pair of cleaning cylinders through nozzle brackets for cleaning the inner wall of the rolled bushing.

[0048] In one embodiment of the present invention, a pair of cleaning nozzles are respectively provided with splash shields 16, which are mounted on corresponding nozzle brackets to collect liquid after cleaning.

[0049] 5. A height detection mechanism comprises a pair of height detection cylinders 17, a limit block 18, a contact displacement sensor 19 and a limit shell 20; the pair of height detection cylinders are respectively located on both sides of the rotating disc, and are respectively connected to the limit blocks and the limit shell by driving; the limit block comprises a large diameter portion 18-1 and a small diameter portion 18-2, the outer diameter of the large diameter portion is larger than the outer diameter of the rolled bushing, the outer diameter of the small diameter portion is smaller than the inner diameter of the rolled bushing, and a detection step surface is formed at the connection between the large diameter portion and the small diameter portion; the limit shell is in the shape of a hollow cylinder, and the contact displacement sensor is built into the inner cavity of the limit shell.

[0050] 6. The internal chamfering mechanism comprises a pair of chamfering cylinders 21 and a pair of punches 22. The pair of chamfering cylinders are respectively located on both sides of the rotating disc. The pair of punches are respectively driven and connected to the pair of chamfering cylinders. The outer end of the punch is provided with a chamfering section 22-1. The size of the chamfering section matches the internal chamfer to be processed by the rolled bushing.

[0051] In one embodiment of the present invention, a pair of guide channels 23 are provided, and the pair of guide channels are respectively installed on both sides of the rotating disc through a support frame 24, and the guide channels are located between the chamfering cylinder and the rotating disc. A limiting step 22-2 matching the end face of the guide channel is also provided on the punch to prevent excessive displacement of the punch.

[0052] 7. The inner diameter detection mechanism includes an inner diameter plug gauge 25 and an inner diameter detection cylinder 26. The inner diameter detection cylinder is installed on one side of the rotating disc, and the inner diameter detection cylinder drives the inner diameter plug gauge. The inner diameter detection cylinder sends the probe of the inner diameter plug gauge into the corresponding die of the rotating disc to measure the inner diameter of the rolled bushing.

[0053] 8. The ejection mechanism includes an ejection cylinder 27 and a push rod 28. The ejection cylinder is installed on one side of the rotating disc and is connected to the push rod. The push rod is extended by the ejection cylinder, and the rolled bushing is separated from the corresponding die by the push rod, so that the rolled bushing enters the discharge mechanism.

[0054] In one embodiment of the present invention, the push rod includes a push rod body 28-1, a push-out section 28-2, and an introduction section 28-3; the outer diameter of the introduction section gradually increases from the outer end to the inner end, the outer diameter of the outer end of the introduction section is smaller than the inner diameter of the rolled bushing, and the outer diameter of the inner end of the introduction section is larger than the inner diameter of the rolled bushing; the push-out section is a cylindrical shape with equal diameter, and its outer diameter is equal to the outer diameter of the inner end of the introduction section and smaller than the inner diameter of the die; the outer diameter of the push-out section is smaller than the outer diameter of the push rod body, and the outer diameter of the push rod body is larger than the outer diameter of the die, forming a stripping step surface to prevent excessive displacement.

[0055] 9. The discharging mechanism comprises a slideway 29 arranged downwardly and tilted. The highest end of the slideway is arranged opposite to the push rod and corresponds to a certain position of a concave die on the rotating disc. The push cylinder extends and pushes the rolled bushing into the slideway through the push rod.

[0056] In one embodiment of the present invention, a defective product rejection mechanism is also provided, including a discharge plate 30, a defective product collection frame 31, a rejection cylinder 32, and a connecting rod assembly 33; a discharge port is provided in the middle of the slide, and the discharge plate is installed at the discharge port, one end of the discharge plate is rotatably connected to the slide, and the other end is connected to the output shaft of the rejection cylinder through the connecting rod assembly, and the defective product collection frame is located below the discharge port.

[0057] 10. A control unit is connected to the contact displacement sensor, the inner diameter plug gauge, etc., and controls the working state of the connected drive unit and each cylinder respectively.

[0058] Example 2 A method for shaping a rolled bushing comprises the following steps: 1) Feed The central shaft 3 is driven by the driving unit 1 to drive the rotating disc 2 to rotate, so that each die 5 on the rotating disc 2 corresponds to each station position, and the positioning cylinder 4 is controlled to extend and snap into the positioning groove 2-1 on the outer surface of the rotating disc to complete the positioning of the rotating disc; The rolled bushing 34 to be processed is placed in the material channel 6, and the rolled bushing rolls down to the V-shaped portion 7-2 of the guide table 7 at the outlet end of the material channel; At this time, the next rolled bushing 34 to be processed is stored between the unloading plate 9 and the blocking plate 8 .

[0059] 2) Plastic surgery Control the shaping cylinder 12 to extend so that the introduction section 13-4 of the mandrel 13 enters the inner cavity of the rolled bushing of the concave die; The shaping cylinder 12 continues to extend, and the shaping section 13-3 of the mandrel 13 pushes the rolled bushing from the V-shaped portion 7-2 of the guide table into the concave die 5 of the rotating disc; The shaping cylinder 12 continues to extend until the shaping step surface of the mandrel 13 contacts the end surface of the rolled bushing, and the shaping section 13-3 of the mandrel cooperates with the die to complete the shaping of the rolled bushing, so that the rolled bushing fits the die; The shaping cylinder 12 is reset, the mandrel 13 is separated from the rolled bushing, and the shaping work is completed.

[0060] 3) Cleaning The positioning cylinder 4 is retracted to drive the rotating disc 2, so that the rolled bushing that has been shaped enters the cleaning station, and then the rotating disc is positioned by the positioning cylinder; A pair of cleaning cylinders 14 are driven to extend so that the cleaning nozzles 15 are located near the two ends of the rolled bushing, and at the same time, the end surface of the splash shield 16 is in contact with the end surface of the rotating disc; The cleaning nozzle works to spray cleaning liquid to separate the attachments on the inner wall of the rolled bushing, and the cleaning liquid is collected through the splash cover.

[0061] 4) Height detection The positioning cylinder is retracted to drive the rotating disc, so that the cleaned rolled bushing enters the height detection station, and then the rotating disc is positioned by the positioning cylinder; First, move the stopper 18 to one end of the die so that the detection step surface of the stopper fits with the corresponding end surface of the rolled bushing. At this time, the small diameter portion 18-2 of the stopper enters the inner cavity of the rolled bushing. Then, the height detection cylinder 17 on the other side is driven to extend, so that the limit housing 20 and the contact displacement sensor 19 move toward the die together until the probe of the contact displacement sensor contacts the end surface of the small diameter portion of the limit block; Next, the height detection cylinder 17 on this side is driven to extend until the end surface of the limit shell 20 is in contact with the other end surface of the rolled bushing. During this process, the probe of the contact displacement sensor generates a displacement. Finally, the displacement of the contact displacement sensor probe 19 is compared with the set standard value. If it is qualified, it is a good product. If it is unqualified, it is a defective product, and the height detection work is completed.

[0062] 5) Press inner chamfer The positioning cylinder 4 is retracted to drive the rotating disc 2, so that the rolled bushing that has completed the height detection enters the inner chamfering station, and then the rotating disc is positioned by the positioning cylinder; A pair of chamfering cylinders 21 are driven to extend, and a pair of punches 22 are driven to move toward the two ends of the die respectively, and the punches are moved through the corresponding guide channels 23 until the limiting step 22-2 of the punch fits with the end surface of the guide channel. At the same time, the chamfering section 22-1 at the outer end of the punch is pressed into the port of the rolled bushing to complete the internal chamfering of the rolled bushing.

[0063] 6) Inner diameter detection The positioning cylinder 4 is retracted to drive the rotating disc 2, so that the rolled bushing with the inner chamfered is brought into the inner diameter detection station, and then the rotating disc is positioned by the positioning cylinder; The inner diameter detection cylinder 26 is driven to extend, and the probe of the inner diameter plug gauge 25 is sent into the concave die corresponding to the rotating disc to detect the inner diameter of the rolled bushing. If it passes, it is a good product, and if it fails, it is a defective product.

[0064] 7) Push out (removal of material) The positioning cylinder 4 is retracted to drive the rotating disc 2, so that the rolled bushing that has completed the inner diameter detection enters the stripping station, and then the rotating disc is positioned by the positioning cylinder; The push-out cylinder 27 is extended, the introduction section 28-3 of the push rod 28 contacts the end face of the rolled bushing, and the push-out section 28-2 of the push rod extends into the die cavity until the step surface of the push rod fits the end face of the die, pushing out the rolled bushing, completing the separation of the rolled bushing and the corresponding die, and allowing the rolled bushing to enter the discharge mechanism.

[0065] 8) Discharging If the rolled bushing is found to be good after being inspected by the height inspection mechanism and the inner diameter inspection mechanism, the rolled bushing will fall from the slideway 29 .

[0066] If there are defective products in any of the detection mechanisms, the rejection cylinder 32 extends, and drives the discharge plate 30 to flip open through the connecting rod assembly 33, and the defective products fall from the discharge port in the middle of the slide into the defective product collection frame 31 below.

Claims

1. A rolled bushing shaping device, characterized in that: include: The rotating mechanism comprises a driving unit and a rotating disc, wherein the driving unit drives the rotating disc to rotate; a plurality of holes evenly distributed along the circumferential direction are arranged on the end surface of the rotating disc, and each hole is built with a concave die matching the rolled bushing; The feeding mechanism comprises an inclined material channel, the inlet end of the material channel is higher than the outlet end, and the outlet end corresponds to a certain die position on the rotating disc; The shaping mechanism includes a shaping cylinder and a mandrel. The shaping cylinder is located on one side of the rotating disc and is drivingly connected to the mandrel. The mandrel extends to send the rolled bushing at the outlet end of the material channel into the concave mold of the rotating disc and complete the shaping work. The cleaning mechanism comprises a pair of cleaning cylinders and a pair of cleaning nozzles, wherein the pair of cleaning cylinders are respectively arranged on both sides of the rotating disc, and the pair of cleaning nozzles are respectively driven and connected to the pair of cleaning cylinders; The height detection mechanism includes a pair of height detection cylinders, a limit block, a contact displacement sensor, and a limit shell; the pair of height detection cylinders are respectively located on both sides of the rotating disc, and are respectively connected to the limit block and the limit shell by driving; the contact displacement sensor is built into the inner cavity of the limit shell, and the limit block cooperates with the probe of the contact displacement sensor to complete the height detection; The inner diameter detection mechanism includes an inner diameter plug gauge and an inner diameter detection cylinder. The inner diameter detection cylinder is installed on one side of the rotating disc. The inner diameter detection cylinder drives the inner diameter plug gauge to complete the inner diameter inspection. The ejection mechanism comprises an ejection cylinder and a push rod, wherein the ejection cylinder is installed on one side of the rotating disc, and the ejection cylinder is drivingly connected to the push rod; The discharging mechanism comprises a slideway arranged in a downward tilt, wherein the highest end of the slideway is arranged opposite to the push rod and corresponds to a certain position of a concave mold on the rotating disc; The control unit is connected to the contact displacement sensor and the inner diameter plug gauge for communication, and controls the working state of the connected drive unit and each cylinder respectively.

2. A rolled bushing shaping device according to claim 1, characterized in that: A positioning cylinder is arranged above the rotating disc, and a plurality of positioning grooves are evenly arranged on the outer circumferential surface of the rotating disc.

3. A rolled bushing shaping device according to claim 2, characterized in that: The two sides of the rotating disc are respectively provided with symmetrically arranged positioning bearings, and the positioning bearings on the two sides are respectively in contact with the end surface of the rotating disc.

4. The rolled bushing shaping device according to claim 1 is characterized in that: A material baffle plate, a material discharge plate, a material baffle cylinder and a material discharge cylinder are provided in the middle of the material channel; the material baffle plate and the material discharge plate are arranged at intervals, and the distance between them is greater than the outer diameter of the rolled bushing; the material baffle plate and the material discharge plate are respectively connected to the material baffle cylinder and the material discharge cylinder, and the corresponding cylinders control the lifting and lowering.

5. The rolled bushing shaping device according to claim 1 is characterized in that: The mandrel comprises a mandrel body, a diameter-changing section, a shaping section, and an introduction section in sequence; The mandrel body is connected to the shaping cylinder, the outer diameter of the reducing section gradually increases from the inner end to the outer end, the outer diameter of the shaping section matches the inner diameter of the rolled bushing, and the introduction section is chamfered in an arc; The outer diameter of the inner end of the reducing section is smaller than the outer diameter of the core rod body, forming a shaping step surface matching the end face of the rolled bushing, and the outer diameter of the outer end of the reducing section is equal to the outer diameter of the shaping section.

6. The rolled bushing shaping device according to claim 1 is characterized in that: Splash shields are respectively arranged outside a pair of cleaning nozzles.

7. The rolled bushing shaping device according to claim 1 is characterized in that: There is also an inner chamfering mechanism, which includes a pair of chamfering cylinders and a pair of punches; the pair of chamfering cylinders are respectively located on both sides of the rotating disc, and the pair of punches are respectively driven and connected to the pair of chamfering cylinders, and the outer end of the punch is provided with a chamfering section, and the size of the chamfering section matches the inner chamfer to be processed by the rolled bushing.

8. The rolled bushing shaping device according to claim 1 is characterized in that: The push rod comprises a push rod body, a push section, and an introduction section; the outer diameter of the introduction section gradually increases from the outer end to the inner end, the outer diameter of the outer end of the introduction section is smaller than the inner diameter of the rolled bushing, and the outer diameter of the inner end of the introduction section is larger than the inner diameter of the rolled bushing; The ejection section is a cylindrical section of equal diameter, and its outer diameter is equal to the outer diameter of the inner end of the introduction section and smaller than the inner diameter of the die; the outer diameter of the ejection section is smaller than the outer diameter of the push rod body, and the outer diameter of the push rod body is larger than the outer diameter of the die, forming a stripping step surface.

9. The rolled bushing shaping device according to claim 1 is characterized in that: It is also equipped with a defective product rejection mechanism, including a discharge plate, a defective product collection frame, a rejection cylinder, and a connecting rod assembly; A discharge port is provided in the middle of the slide, and the discharge plate is installed at the discharge port. One end of the discharge plate is rotatably connected to the slide, and the other end is connected to the output shaft of the rejection cylinder through a connecting rod assembly. The defective product collection frame is located below the discharge port.

10. A method for shaping a rolled bushing, characterized in that: The rolled bushing shaping device according to any one of claims 1 to 9 comprises the following steps: 1) Feed Drive the rotating disc so that each concave mold on the rotating disc corresponds to each station position, control the positioning cylinder to extend and snap into the positioning groove on the outer surface of the rotating disc to complete the positioning of the rotating disc; The rolled bushing to be processed is placed in the material channel, and the rolled bushing rolls down to the outlet end of the material channel; 2) Plastic surgery The shaping cylinder is controlled to extend so that the guide section of the mandrel is inserted into the inner cavity of the rolled bushing; the shaping cylinder continues to extend so that the shaping section of the mandrel pushes the rolled bushing into the concave die of the rotating disc; The shaping cylinder continues to extend until the shaping step surface of the mandrel contacts the end surface of the rolled bushing, and the shaping section of the mandrel shapes the rolled bushing so that the rolled bushing fits the die; The shaping cylinder is reset, the mandrel is separated from the rolled bushing, and the shaping work is completed; 3) Cleaning The positioning cylinder is retracted to drive the rotating disc, so that the rolled bushing that has been shaped enters the cleaning station, and then the rotating disc is positioned by the positioning cylinder; A pair of cleaning cylinders are driven to extend so that the cleaning nozzles are located near the two ends of the rolled bushing; the cleaning nozzles work to spray cleaning liquid to separate the attachments on the inner wall of the rolled bushing; 4) Height detection The positioning cylinder is retracted to drive the rotating disc, so that the cleaned rolled bushing enters the height detection station, and then the rotating disc is positioned by the positioning cylinder; First, move the stopper to one end of the die so that the detection step surface of the stopper fits with the corresponding end surface of the rolled bushing. At this time, the small diameter portion of the stopper enters the inner cavity of the rolled bushing. Then, the height detection cylinder on the other side is driven to extend, so that the limit housing and the contact displacement sensor move toward the die together until the probe of the contact displacement sensor contacts the end surface of the small diameter portion of the limit block; Next, the height detection cylinder on this side is driven to extend until the end face of the limit shell fits with the other end face of the rolled bushing. During this process, the probe of the contact displacement sensor generates a displacement. Finally, the displacement of the contact displacement sensor probe is compared with the set standard value. If it is qualified, it is a good product. If it is unqualified, it is a defective product, and the height detection work is completed. 5) Press inner chamfer The positioning cylinder is retracted to drive the rotating disc, so that the rolled bushing that has completed the height detection enters the inner chamfering station, and then the rotating disc is positioned by the positioning cylinder; A pair of chamfering cylinders are driven to extend, and a pair of punches are driven to move toward the two ends of the corresponding die, so that the chamfered section at the outer end of the punch is pressed into the port of the rolled bushing, completing the internal chamfering of the rolled bushing; 6) Inner diameter detection The positioning cylinder is retracted to drive the rotating disc, so that the rolled bushing with the inner chamfered is brought into the inner diameter detection station, and then the rotating disc is positioned by the positioning cylinder; Drive the inner diameter detection cylinder to extend, send the probe of the inner diameter plug gauge into the corresponding die of the rotating disc, and detect the inner diameter of the rolled bushing. If it passes, it is a good product, if it fails, it is a defective product; 7) Launch The positioning cylinder is retracted to drive the rotating disc, so that the rolled bushing that has completed the inner diameter inspection enters the stripping station, and then the rotating disc is positioned by the positioning cylinder; The push-out cylinder extends to separate the rolled bushing from the corresponding die, allowing the rolled bushing to enter the discharge mechanism; 8) Discharging If the height detection mechanism and the inner diameter detection mechanism detect that the product is good, the rolled bushing will fall from the slideway; If there are defective products in any detection mechanism, the rejection cylinder extends out, and drives the discharge plate to flip open through the connecting rod assembly, and the defective products fall from the discharge port in the middle of the slide into the defective product collection frame below.

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