Automatic loading and positioning mechanism for plunger sleeve processing

Abstract

The present invention discloses an automatic loading and positioning mechanism for plunger sleeve machining, comprising a base, a first bracket, a circular tube, a first through-hole, a first electric push rod, a bearing, a circular rotating disk, a plunger sleeve positioning hole, a mounting through-hole, an annular groove, a movable pressure rod, a movable limiting ring, a compression spring, a driven gear, a servo motor, a drive gear, a protective cover, a positioning plate, a second through-hole, a second electric push rod, a vibrating disk, a loading track, a third electric push rod, a connecting bracket, a discharging track, and a PLC controller. The present invention has a simple structure and a rational design, enabling it to integrate automated loading, automated positioning, and automated discharging, thereby improving the efficiency of plunger sleeve flattening machining.

Description

Technical field

[0001] The present invention relates to the technical field of plunger sleeve processing, in particular to the technical field of an automatic loading and positioning mechanism for plunger sleeve processing. [Background Technology]

[0002] The industry of producing oil pump nozzle plunger sleeves is a typical labor-intensive enterprise with multiple processes, which has the characteristics of high technical requirements, complex processing technology, low production efficiency and high production cost. The plunger sleeve precision coupling is a key part of the oil pump nozzle components. At present, the vast majority of domestic manufacturers still adopt the original processing technology, generally using two main processes of turning the plunger sleeve and drilling the sleeve hole to produce the plunger. Among them, turning the plunger sleeve is to cut the material on a fixed-length standard bar with a sawing machine, and use a small lathe to segmentally cut the outer circle of different diameters on the same plunger sleeve blank to meet the process requirements. The ends of the bar sawed by the sawing machine need to be smoothed by a grinder. In the existing technology, ordinary fixing devices are generally used to fix the plunger sleeve blank, which has low working efficiency and is inconvenient to use. For example, application No. C N201721012617.0 discloses a semi-automatic end face grinding machine for the production of plunger sleeves. During the implementation of the grinding machine, the plunger sleeve blank is pressed and fixed in the accommodating groove 222 by the downward movement of the pressing seat 226. The plunger sleeve fixing method is simple, and manual loading and unloading of the plunger sleeve is required, resulting in low work efficiency. Although there are currently some loading devices for plunger sleeve grinding machines, such as the loading device for the plunger sleeve fixing device of the plunger sleeve end face grinding machine disclosed in application number CN201810655349.7, this type of loading device often only has a loading function, and the plunger sleeve has no positioning and unloading functions, and still requires manual operation for positioning and unloading, resulting in low work efficiency. Therefore, in order to improve work efficiency, it is necessary to propose an automated mechanism that can combine loading, positioning, and unloading. [Summary of the invention]

[0003] The purpose of the present invention is to solve the problems in the prior art and propose an automatic loading and positioning mechanism for plunger sleeve processing, which can make it have automatic loading, automatic positioning and automatic discharging in one, thereby improving the efficiency of the plunger sleeve grinding process.

[0004] To achieve the above-mentioned purpose, the present invention proposes an automatic loading and positioning mechanism for processing a plunger sleeve, comprising a base, a first bracket, a circular tube, a first through hole, a first electric push rod, a bearing, a circular turntable, a plunger sleeve positioning hole, a mounting through hole, an annular groove, a movable pressure rod, a movable limiting ring, a compression spring, a driven gear, a servo motor, a driving gear, a protective cover, a positioning plate, a second through hole, a second electric push rod, a vibration plate, a loading rail, a third electric push rod, a connecting bracket, a discharging rail, and a PLC controller. A first bracket is provided at the middle of the upper end of the base, a circular tube arranged in the left and right directions of the axis is provided at the upper end of the first bracket, a radially arranged first through hole is provided on the tube wall of the bottom end of the circular tube, a first electric push rod fixed to the outer tube wall of the circular tube is provided at the lower end of the first through hole, and the extension of the first electric push rod The retractable shaft extends into the first through hole, and the telescopic shaft of the first electric push rod is coaxial with the first through hole. A coaxial circular rotating disk is provided in the inner hole of the circular tube, and a bearing is connected between the inner hole wall of the circular tube and the outer ring wall of the circular rotating disk. A plurality of axially arranged plunger sleeve positioning holes are provided on the right end face of the circular rotating disk. The plurality of plunger sleeve positioning holes are evenly distributed in a circle with the center of the circular rotating disk as the center. The outer ring wall of the circular rotating disk is provided with a plurality of radially arranged mounting through holes, and the plurality of mounting through holes correspond to the plurality of plunger sleeve positioning holes one by one. The mounting through holes are connected with the corresponding inner holes of the plunger sleeve positioning holes. The mounting through hole at the lower end of the circular rotating disk is coaxial with the telescopic shaft of the first electric push rod, and the outer diameter of the telescopic shaft of the first electric push rod is smaller than the inner diameter of the mounting through hole. A coaxial annular groove is provided in the middle of the inner hole of the mounting through hole, and the inner hole of the mounting through hole is provided with a coaxial movable The cam is provided with a movable pressure rod, one end of the movable pressure rod extends into the positioning hole of the plunger sleeve, and the end face of the movable pressure rod close to the positioning hole of the plunger sleeve and the side wall have a chamfered transition, and the other end of the movable pressure rod does not extend out of the outer ring wall of the circular turntable. A coaxial movable limiting ring is provided in the middle of the movable pressure rod, and a compression spring is connected between the end face of the movable limiting ring away from the positioning hole of the plunger sleeve and the groove wall of the annular groove away from the positioning hole of the plunger sleeve. A coaxial driven gear is provided on the outer ring wall of the circular turntable on the right side of the circular tube, and a servo motor is provided at the lower left of the driven gear. A driving gear meshing with the driven gear is provided on the driving shaft of the servo motor, and a protective cover covers the servo motor. A positioning plate is provided on the top of the protective cover, and the positioning plate is arranged close to the left end face of the circular turntable, and the right end face of the positioning plate is parallel to the left end face of the circular turntable, and the right end face of the positioning plate has a chamfered transition with the side wall. The bottom end of the right end surface of the positioning plate covers the left end port of the plunger sleeve positioning hole at the lowest end of the circular turntable, and the upper end of the right end surface of the positioning plate covers the left end port of the plunger sleeve positioning hole at the front end or the rear end of the circular turntable. A second through hole is provided on the upper end of the right end surface of the positioning plate, and the left end port of the second through hole is provided with a second electric push rod fixed to the left end surface of the positioning plate, and the telescopic shaft of the second electric push rod extends into the second through hole, and the telescopic shaft of the second electric push rod is coaxial with the plunger sleeve positioning hole at the front end or the rear end of the circular turntable, and the outer diameter of the telescopic shaft of the second electric push rod is smaller than the inner diameter of the plunger sleeve positioning hole. A discharging track is provided on the right side of the circular turntable at an angle to the lower right, and the discharging track is adapted to the right end port of the plunger sleeve positioning hole at the front end or the rear end of the circular turntable, and the discharging track is adapted to the second electric push rod. A vibrating disk is provided on the left side of the circular turntable.A downward-facing loading track is provided at the discharge end of the vibrating plate. The loading track's discharge end is adapted to the left end of the plunger sleeve positioning hole at the top of the circular turntable. A connecting bracket is provided at the top of the right end face of the circular tube. A third electric push rod is provided at the lower end of the connecting bracket, coaxial with the plunger sleeve positioning hole at the top of the circular turntable. The telescopic axis of the third electric push rod is arranged toward the plunger sleeve positioning hole. The PLC controller is provided on the side of the base. The first electric push rod, servo motor, second electric push rod, vibrating plate, loading track, third electric push rod, and discharge track are all adapted and connected to the PLC controller.

[0005] Preferably, a second bracket is connected between the servo motor and the base, a third bracket is connected between the vibration plate and the base, and a fourth bracket is connected between the discharge track and the base.

[0006] Preferably, two bearings are connected between the inner hole wall of the circular tube and the outer ring wall of the circular turntable, and the two bearings are respectively arranged on the left and right sides of the first through hole.

[0007] Preferably, the axis of the mounting through hole is coplanar with the axis of the corresponding plunger sleeve positioning hole.

[0008] Preferably, the movable limiting ring is a non-circular ring, the annular groove is adapted to the movable limiting ring, the movable limiting ring can move in the annular groove along the axis of the mounting through hole, and a coaxial compression spring is sleeved on the movable pressure rod.

[0009] Preferably, there is a chamfered transition between the inner wall of the plunger sleeve positioning hole and the left and right end surfaces of the circular rotating disk.

[0010] The beneficial effects of the present invention are as follows: the present invention has a simple structure and a reasonable design, and can realize automatic loading, automatic positioning and automatic discharging in one, thereby improving the efficiency of the smoothing processing of the plunger sleeve; combined with the control of the PLC controller, by combining the vibration plate, the feeding track, the third electric push rod, the positioning plate with the circular turntable and the positioning hole of the plunger sleeve, the automatic loading of the plunger sleeve can be realized; by arranging the first through hole, the first electric push rod, the installation through hole, the annular groove, the movable pressure rod, the movable limiting ring, the compression spring and the positioning plate, the preliminary limiting automation of the plunger sleeve during the rotation of the circular turntable and the complete limiting automation during the processing of the plunger sleeve can be realized; by arranging the second through hole, the first electric push rod, the installation through hole, the annular groove, the movable pressure rod, the movable limiting ring, the compression spring and the positioning plate, the initial limiting automation of the plunger sleeve during the rotation of the circular turntable and the complete limiting automation during the processing of the plunger sleeve can be realized The method of two electric push rods and discharge rails can realize the automatic discharge of the plunger sleeve, which is a trinity of automatic loading, automatic positioning and automatic discharge, reducing labor requirements and improving production efficiency; by setting a chamfered transition between the end face of the movable pressure rod close to the plunger sleeve positioning hole and the side wall, after one end of the movable pressure rod is extended into the plunger sleeve positioning hole, the rounded corner used for transition will allow the plunger sleeve to pass smoothly through the movable pressure rod end face inside the plunger sleeve positioning hole; by setting a chamfered transition between the right end face of the positioning plate and the side wall, in case the plunger sleeve moves to the left during the rotation of the turntable, the rounded corner used for transition will allow the plunger sleeve to pass smoothly through the right end face of the positioning plate, thereby avoiding the plunger sleeve from being stuck on the edge of the positioning plate.

[0011] The features and advantages of the present invention will be described in detail through embodiments with reference to the accompanying drawings.

Brief Description of the Drawings

[0012] Figure 1 It is a schematic diagram of the main structure of the automatic loading and positioning mechanism for processing the plunger sleeve of the present invention. [Specific implementation method]

[0013] See Figure 1The automatic loading and positioning mechanism for the processing of the plunger sleeve of the present invention includes a base 1, a first bracket 11, a round tube 2, a first through hole 21, a first electric push rod 22, a bearing 23, a circular turntable 3, a plunger sleeve positioning hole 31, a mounting through hole 32, an annular groove 321, a movable pressure rod 33, a movable limiting ring 331, a compression spring 332, a driven gear 34, a servo motor 4, a driving gear 41, a protective cover 42, a positioning plate 5, a second through hole 51, a second electric push rod 52, a vibration plate 6, a loading rail 61, a third electric push rod 7, a connecting bracket 71, a discharging rail 8, and a PLC controller 9. The middle part of the upper end of the base 1 is provided with a first bracket 11, the upper end of the first bracket 11 is provided with a round tube 2 arranged in the left and right directions of the axis, and the bottom end of the round tube 2 is provided with a tube The wall is provided with a radially arranged first through hole 21, and the lower end of the first through hole 21 is provided with a first electric push rod 22 fixed on the outer wall of the circular tube 2, the telescopic shaft of the first electric push rod 22 extends into the first through hole 21, and the telescopic shaft of the first electric push rod 22 is coaxial with the first through hole 21, and the inner hole of the circular tube 2 is provided with a coaxial circular turntable 3, and a bearing 23 is connected between the inner hole wall of the circular tube 2 and the outer ring wall of the circular turntable 3. The right end surface of the circular turntable 3 is provided with a plurality of axially arranged plunger sleeve positioning holes 31, and the plurality of plunger sleeve positioning holes 31 are evenly distributed in a circular shape with the center of the circular turntable 3 as the center. The outer ring wall of the circular turntable 3 is provided with a plurality of radially arranged mounting through holes 32, and the plurality of mounting through holes 32 correspond one to one with the plurality of plunger sleeve positioning holes 31, and the mounting through holes 32 correspond to the corresponding plunger sleeve positioning holes 31. The inner hole of the plug sleeve positioning hole 31 is connected, the mounting through hole 32 at the lower end of the circular rotary disk 3 is coaxial with the telescopic axis of the first electric push rod 22, and the outer diameter of the telescopic axis of the first electric push rod 22 is smaller than the inner diameter of the mounting through hole 32, and a coaxial annular groove 321 is provided in the middle of the inner hole of the mounting through hole 32, and a coaxial movable pressure rod 33 is provided in the inner hole of the mounting through hole 32. One end of the movable pressure rod 33 extends into the interior of the plunger sleeve positioning hole 31, and the movable pressure rod 33 is close to the end face of the plunger sleeve positioning hole 31 and the side wall between the chamfered transition, and the other end of the movable pressure rod 33 does not extend out of the outer ring wall of the circular rotary disk 3, and a coaxial movable limiting ring 331 is provided in the middle of the movable pressure rod 33, and the movable limiting ring 331 is away from the end face of the plunger sleeve positioning hole 31 and the annular groove 321 is away from the groove wall of the plunger sleeve positioning hole 31. A compression spring 332 is connected, and a coaxial driven gear 34 is provided on the outer ring wall of the circular rotating disk 3 on the right side of the circular tube 2. A servo motor 4 is provided at the lower left of the driven gear 34. A driving gear 41 meshing with the driven gear 34 is provided on the driving shaft of the servo motor 4. A protective cover 42 covers the servo motor 4. A positioning plate 5 is provided on the top of the protective cover 42. The positioning plate 5 is arranged close to the left end face of the circular rotating disk 3. The right end face of the positioning plate 5 is parallel to the left end face of the circular rotating disk 3. The right end face of the positioning plate 5 and the side wall have a chamfered transition. The bottom end of the right end face of the positioning plate 5 covers the left end of the plunger sleeve positioning hole 31 at the lowest end of the circular rotating disk 3. The upper end of the right end face of the positioning plate 5 covers the left end of the plunger sleeve positioning hole 31 at the front end or the rear end of the circular rotating disk 3. The upper end of the right end face of the positioning plate 5 is provided with a second through hole 51.The left end of the second through hole 51 is provided with a second electric push rod 52 fixed to the left end face of the positioning plate 5, and the telescopic shaft of the second electric push rod 52 extends into the second through hole 51. The telescopic shaft of the second electric push rod 52 is coaxial with the plunger sleeve positioning hole 31 at the front end or the rear end of the round turntable 3. The outer diameter of the telescopic shaft of the second electric push rod 52 is smaller than the inner diameter of the plunger sleeve positioning hole 31. The right side of the round turntable 3 is provided with a discharge track 8 inclined at the lower right side. The discharge track 8 is adapted to the right end of the plunger sleeve positioning hole 31 at the front end or the rear end of the round turntable 3, and the discharge track 8 is adapted to the second electric push rod 52. A vibration disk 6 is provided on the left side of the round turntable 3. The vibration disk 6 The discharge end is equipped with a downward-facing loading track 61, which is adapted to the left end of the plunger sleeve positioning hole 31 at the top of the circular turntable 3. A connecting bracket 71 is provided at the top of the right end surface of the circular tube 2. The lower end of the connecting bracket 71 is equipped with a third electric push rod 7 coaxial with the plunger sleeve positioning hole 31 at the top of the circular turntable 3. The telescopic axis of the third electric push rod 7 is arranged toward the plunger sleeve positioning hole 31. The PLC controller 9 is arranged on the side of the base 1. The first electric push rod 22, servo motor 4, second electric push rod 52, vibration plate 6, loading track 61, third electric push rod 7, and discharge track 8 are all adapted to be connected to the PLC controller 9.

[0014] Among them, a second bracket 12 is connected between the servo motor 4 and the base 1 , a third bracket 13 is connected between the vibration plate 6 and the base 1 , and a fourth bracket 14 is connected between the discharge track 8 and the base 1 .

[0015] There are two bearings 23 connected between the inner hole wall of the circular tube 2 and the outer ring wall of the circular rotating disk 3 , and the two bearings 23 are respectively arranged on the left and right sides of the first through hole 21 .

[0016] The axis of the mounting through hole 32 is coplanar with the axis of the corresponding plunger sleeve positioning hole 31 .

[0017] The movable limiting ring 331 is a non-circular ring, the annular groove 321 is adapted to the movable limiting ring 331 , and the movable limiting ring 331 can move in the annular groove 321 along the axis of the mounting through hole 32 , and a coaxial compression spring 332 is sleeved on the movable pressure rod 33 .

[0018] There is a chamfered transition between the inner wall of the plunger sleeve positioning hole 31 and the left and right end surfaces of the rotating disk 3 .

[0019] Working process of the present invention:

[0020] During the operation of the automatic loading and positioning mechanism for processing the plunger sleeve of the present invention, each component of the automatic loading and positioning mechanism for processing the plunger sleeve is controlled and operated by the PLC controller 9;

[0021] Step 1: Place several plunger sleeves in the vibration plate 6, and use the vibration plate 6 to arrange the plunger sleeves in an orderly manner and input them into the feeding track 61;

[0022] The second step: After the calibration is completed, the plunger sleeve enters the plunger sleeve positioning hole 31 at the upper end of the round turntable 3 through the discharge port of the feeding track 61, and the plunger sleeve extends from the right end of the positioning hole 31. At this time, due to the rounded transition between the end face of the movable pressure rod 33 close to the plunger sleeve positioning hole 31 and the side wall, although one end of the movable pressure rod 33 extends into the interior of the plunger sleeve positioning hole 31, the rounded corner used for transition will allow the plunger sleeve to pass smoothly through the end face of the movable pressure rod 33 inside the plunger sleeve positioning hole 31. After the plunger sleeve pushes the movable pressure rod 33 outward, the force is mutual, and the movable pressure rod 33 will also Under the action of the elastic force of the compression spring 332, the plunger sleeve is pressed to complete the preliminary fixation of the plunger sleeve. After the plunger sleeve extends from the right end of the positioning hole 31, the left end face of the telescopic shaft of the third electric push rod 7 will press against the right end face of the plunger sleeve to further limit the position of the plunger sleeve. Moreover, before the plunger sleeve enters the plunger sleeve positioning hole 31 at the uppermost end of the round turntable 3 through the discharge port of the feeding track 61, it is necessary to adjust the length of the telescopic shaft of the third electric push rod 7 in advance so that after the left end face of the telescopic shaft of the third electric push rod 7 presses against the right end face of the plunger sleeve, the left end face of the plunger sleeve is coplanar with the left end face of the round turntable 3.

[0023] Step 3: Start the servo motor 4, and the circular turntable 3 rotates clockwise to move the plunger sleeve to the lowest end. At this time, the mounting through hole 32 corresponding to the plunger sleeve positioning hole 31 where the plunger sleeve is located is coaxial with the first through hole 21. Then start the first electric push rod 22, and the telescopic shaft of the first electric push rod 22 passes through the first through hole 21 and extends into the mounting through hole 32. The telescopic shaft of the first electric push rod 22 extends to press the movable pressure rod 33 away from the end face of the plunger sleeve positioning hole 31. The telescopic shaft of the first electric push rod 22 presses the movable pressure rod 33 to force it to press the plunger sleeve, and then the plunger sleeve is clamped by the movable pressure rod 33 and the inner wall of the plunger sleeve positioning hole 31, that is, the plunger sleeve is firmly limited.

[0024] Step 4: When the circular turntable 3 rotates clockwise to move the plunger sleeve to the lowest end, the position of the plunger sleeve is the processing position. A grinder can be installed on the upper end surface of the base 1 on the right side of the processing position so that it can move left and right. When the circular turntable 3 rotates clockwise to move the plunger sleeve to the lowest processing position, the grinder can move left to grind the plunger sleeve;

[0025] Step 5: After the plunger sleeve is processed, the grinder moves right away from the plunger sleeve, the telescopic axis of the first electric push rod 22 shortens and moves away from the round turntable 3, and the elastic force of the compression spring 332 continues to maintain the pressure limit of the movable pressure rod 33 on the plunger sleeve;

[0026] Step 6: Start the servo motor 4, and the circular turntable 3 rotates clockwise to move the plunger sleeve to the front end. At this time, the left and right sides of the plunger sleeve are the second electric push rod 52 and the discharge track 8 respectively. The second electric push rod 52 extends rapidly to push the plunger sleeve out from the plunger sleeve positioning hole 31 at the front end of the circular turntable 3. The lower right side of the plunger sleeve falls into the discharge track 8. The plunger sleeve slides along the discharge track 8 into the designated collection container, completing the discharge of the plunger sleeve.

[0027] The present invention has a simple structure and a reasonable design, and can realize automatic loading, automatic positioning and automatic discharging in one, thereby improving the efficiency of the smoothing processing of the plunger sleeve; combined with the control of the PLC controller 9, by combining the vibration plate 6, the loading track 61, the third electric push rod 7, the positioning plate 5 with the circular rotary disk 3 and the plunger sleeve positioning hole 31, the automatic loading of the plunger sleeve can be realized, and by setting the first through hole 21, the first electric push rod 22, the installation through hole 32, the annular groove 321, the movable pressure rod 33, the movable limiting ring 331, the compression spring 332 and the positioning plate 5, the preliminary limiting automation of the plunger sleeve during the rotation of the circular rotary disk 3 and the complete limiting automation during the processing of the plunger sleeve can be realized, and by setting the second through hole 51, The second electric push rod 52 and the discharge track 8 can realize the automatic discharge of the plunger sleeve, which is a trinity of automatic loading, automatic positioning and automatic discharge, reducing labor requirements and improving production efficiency; by setting a chamfered transition between the end face of the movable pressure rod 33 close to the plunger sleeve positioning hole 31 and the side wall, after one end of the movable pressure rod 33 is extended into the plunger sleeve positioning hole 31, the rounded corner used for transition will allow the plunger sleeve to pass smoothly through the end face of the movable pressure rod 33 inside the plunger sleeve positioning hole 31; by setting a chamfered transition between the right end face of the positioning plate 5 and the side wall, in case the plunger sleeve moves to the left during the rotation of the turntable 3, the rounded corner used for transition will allow the plunger sleeve to pass smoothly through the right end face of the positioning plate 5, avoiding the plunger sleeve from being stuck on the edge of the positioning plate 5.

[0028] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. Automatic loading and positioning mechanism for plunger sleeve processing, characterized by: The invention comprises a base (1), a first bracket (11), a circular tube (2), a first through hole (21), a first electric push rod (22), a bearing (23), a circular rotating disk (3), a plunger sleeve positioning hole (31), a mounting through hole (32), an annular groove (321), a movable pressure rod (33), a movable limiting ring (331), a compression spring (332), a driven gear (34), a servo motor (4), a driving gear (41), a protective cover (42), a positioning plate (5), a second through hole (51), a second electric push rod (52), a vibration disk (6), a feeding track (61), a third electric push rod (7), a connecting bracket (71), a discharging track (8), and a PLC controller (9). The middle portion of the upper end of the base (1) is provided with a first bracket. The first bracket (11) is provided with a circular tube (2) arranged in the left and right directions of the axis at the upper end of the first bracket (11), a first through hole (21) arranged radially is provided on the bottom wall of the circular tube (2), a first electric push rod (22) fixed on the outer wall of the circular tube (2) is provided at the lower end of the first through hole (21), a telescopic shaft of the first electric push rod (22) extends into the first through hole (21), and the telescopic shaft of the first electric push rod (22) is coaxial with the first through hole (21), a coaxial circular rotating disk (3) is provided in the inner hole of the circular tube (2), a bearing (23) is connected between the inner hole wall of the circular tube (2) and the outer ring wall of the circular rotating disk (3), a right end surface of the circular rotating disk (3) is provided with a plurality of axially arranged plunger sleeve positioning holes (31), and the plurality of plunger sleeve positioning holes (31) are connected to the circular rotating disk (3) The center of the circle is the center of the circle and the circumference is evenly distributed. The outer ring wall of the rotating disk (3) is provided with a plurality of radially arranged mounting holes (32). The plurality of mounting holes (32) correspond to the plurality of plunger sleeve positioning holes (31) one by one. The mounting holes (32) are connected with the inner holes of the corresponding plunger sleeve positioning holes (31). The mounting hole (32) at the lower end of the rotating disk (3) is coaxial with the telescopic shaft of the first electric push rod (22), and the outer diameter of the telescopic shaft of the first electric push rod (22) is smaller than the inner diameter of the mounting hole (32). A coaxial annular groove (321) is provided in the middle of the inner hole of the mounting hole (32). A coaxial movable pressure rod (33) is provided in the inner hole of the mounting hole (32). One end of the movable pressure rod (33) extends into the interior of the plunger sleeve positioning hole (31). The movable pressure rod (3 3) A chamfered transition is formed between the end face and the side wall close to the plunger sleeve positioning hole (31), the other end of the movable pressure rod (33) does not extend out of the outer ring wall of the circular rotating disk (3), a coaxial movable limiting ring (331) is provided in the middle of the movable pressure rod (33), a compression spring (332) is connected between the end face of the movable limiting ring (331) away from the plunger sleeve positioning hole (31) and the groove wall of the annular groove (321) away from the plunger sleeve positioning hole (31), a coaxial driven gear (34) is provided on the outer ring wall of the circular rotating disk (3) on the right side of the circular tube (2), a servo motor (4) is provided at the lower left of the driven gear (34), a driving gear (41) meshing with the driven gear (34) is provided on the driving shaft of the servo motor (4), and a protective cover (42) covers the servo motor (4).A positioning plate (5) is provided at the top of the protective cover (42), the positioning plate (5) is arranged close to the left end face of the circular rotating disk (3), the right end face of the positioning plate (5) is parallel to the left end face of the circular rotating disk (3), the right end face of the positioning plate (5) and the side wall are chamfered, the bottom end of the right end face of the positioning plate (5) covers the left end of the plunger sleeve positioning hole (31) at the lowest end of the circular rotating disk (3), the upper end of the right end face of the positioning plate (5) covers the left end of the plunger sleeve positioning hole (31) at the front end or the rear end of the circular rotating disk (3), and the upper end of the right end face of the positioning plate (5) covers the left end of the plunger sleeve positioning hole (31) at the front end or the rear end of the circular rotating disk (3). A second through hole (51) is provided, and a second electric push rod (52) fixed to the left end surface of the positioning plate (5) is provided at the left end of the second through hole (51), and the telescopic shaft of the second electric push rod (52) extends into the second through hole (51), and the telescopic shaft of the second electric push rod (52) is coaxial with the plunger sleeve positioning hole (31) at the front end or the rear end of the circular rotating disk (3), and the outer diameter of the telescopic shaft of the second electric push rod (52) is smaller than the inner diameter of the plunger sleeve positioning hole (31), and a discharging track (31) arranged obliquely at the lower right side of the circular rotating disk (3) is provided on the right side of the circular rotating disk (3). 8), the discharging track (8) is adapted to the right end of the plunger sleeve positioning hole (31) at the front end or the rear end of the circular rotating disk (3), and the discharging track (8) is adapted to the second electric push rod (52), a vibration disk (6) is provided on the left side of the circular rotating disk (3), and a feeding track (61) is provided downwardly at the discharging end of the vibration disk (6), and the discharging end of the feeding track (61) is adapted to the left end of the plunger sleeve positioning hole (31) at the upper end of the circular rotating disk (3), and a connecting bracket (71) is provided at the top end of the right end surface of the circular tube (2). The lower end of the frame (71) is provided with a third electric push rod (7) coaxial with the plunger sleeve positioning hole (31) at the uppermost end of the circular rotating disk (3). The telescopic axis of the third electric push rod (7) is arranged toward the plunger sleeve positioning hole (31). The PLC controller (9) is arranged on the side of the base (1). The first electric push rod (22), the servo motor (4), the second electric push rod (52), the vibration disk (6), the loading track (61), the third electric push rod (7), and the discharging track (8) are all adaptively connected to the PLC controller (9).

2. The automatic loading and positioning mechanism for plunger sleeve processing according to claim 1, characterized in that: A second bracket (12) is connected between the servo motor (4) and the base (1), a third bracket (13) is connected between the vibration plate (6) and the base (1), and a fourth bracket (14) is connected between the discharge track (8) and the base (1).

3. The automatic loading and positioning mechanism for plunger sleeve processing according to claim 1, characterized in that: Two bearings (23) are connected between the inner hole wall of the circular tube (2) and the outer ring wall of the circular rotating disk (3), and the two bearings (23) are respectively arranged on the left and right sides of the first through hole (21).

4. The automatic loading and positioning mechanism for plunger sleeve processing according to claim 1, characterized in that: The axis of the mounting through hole (32) is coplanar with the axis of the corresponding plunger sleeve positioning hole (31).

5. The automatic loading and positioning mechanism for plunger sleeve processing according to claim 1, characterized in that: The movable limiting ring (331) is a non-circular ring, the annular groove (321) is adapted to the movable limiting ring (331), the movable limiting ring (331) can move in the annular groove (321) along the axis of the mounting through hole (32), and a coaxial compression spring (332) is sleeved on the movable pressure rod (33).

6. The automatic loading and positioning mechanism for plunger sleeve processing according to claim 1, characterized in that: The inner wall of the plunger sleeve positioning hole (31) and the left and right end surfaces of the rotating disk (3) are chamfered to form a transition.

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