A piston body assembly mechanism for automated assembly equipment of vacuum pumps

Abstract

This utility model discloses a piston body assembly mechanism for an automated assembly equipment for vacuum pumps. It includes a machine platform with a first turntable on the platform. Multiple piston body positioning fixtures are evenly distributed along the circumference of the first turntable. On a second machine platform outside the first turntable, arranged clockwise at intervals, are a piston body feeding mechanism, a piston seal assembly mechanism for feeding piston seals into the piston body positioning fixtures and pressing them, a limiting ring conveying mechanism, a cylinder conveying mechanism for flipping and feeding cylinder bodies from a transfer fixture into the piston body positioning fixture, a pressing mechanism for fitting the cylinder body onto the piston body, and a second delivery mechanism for feeding the assembled cylinder body into a transfer fixture on the conveying mechanism. This utility model has a simple structure, ensuring that the two semi-circular limiting rings do not detach from the fixtures during assembly, thus enabling accurate docking and assembly.

Description

Technical Field

[0001] This utility model relates to the technical field of automatic assembly equipment for vacuum pumps, and specifically to a piston assembly mechanism for an automated assembly equipment for vacuum pumps. Background Technology

[0002] A vacuum pump is a suction device used to create a vacuum environment.

[0003] In the current vacuum pump assembly process, there is a step that requires assembling two semi-circular limiting rings and installing them on the piston body. The existing practice is usually to assemble them manually. This manual assembly method is not only inefficient, but existing technologies also use automated conveying methods to transport the limiting rings. However, due to design flaws, the two semi-circular limiting rings often fail to assemble properly during assembly and are prone to detaching from the assembly mechanism.

[0004] In addition, in the existing limit ring conveying mechanism, when the material in the vibratory feeder is used up, the semi-circular limit ring in the discharge channel cannot continue to be conveyed forward. This requires manual removal of the semi-circular limit rings in the discharge channel one by one, which is relatively troublesome. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a piston assembly mechanism with a simple structure that prevents the two semi-circular limiting rings from detaching from the clamp during assembly, thereby enabling accurate docking and assembly.

[0006] Another objective of this invention is to provide a piston assembly mechanism that can convey and deliver the semi-circular limiting ring tail material in the discharge channel.

[0007] To achieve the above objectives, this utility model adopts the following solution: a piston body assembly mechanism for an automated assembly equipment for a vacuum pump, characterized in that: it includes a machine platform, on which a first turntable is provided, and multiple piston body positioning fixtures are evenly distributed along the circumferential direction on the first turntable; on a second machine platform outside the first turntable, a piston body feeding mechanism, a piston seal assembly mechanism for feeding piston seals into piston bodies on piston body positioning fixtures and pressing them, a limiting ring conveying mechanism, a cylinder conveying mechanism for flipping cylinder bodies on transfer fixtures and feeding them into piston bodies on piston body positioning fixtures, a pressing mechanism for fitting cylinder bodies onto piston bodies, and a mechanism for feeding assembled cylinder bodies into... A second delivery mechanism for the transfer clamp on the conveying mechanism; the limiting ring conveying mechanism includes a second turntable disposed on the machine base, mounting platforms evenly distributed along the circumferential direction on the second turntable, two relatively movable first pneumatic grippers disposed on the mounting platforms, each of the first pneumatic grippers being provided with a positioning groove for accommodating a semi-circular limiting ring, a vibratory feeder mechanism symmetrically disposed on the machine base on both sides of the second turntable, a limiting ring conveying mechanism for sending the limiting ring from the discharge end of the vibratory feeder mechanism into the positioning groove between the vibratory feeder mechanism and the second turntable, and an auxiliary gripping mechanism for preventing the semi-circular limiting ring from detaching from the positioning groove during the pressing process disposed above the first pneumatic grippers.

[0008] As another improvement of the piston body assembly mechanism of the present invention for automated assembly equipment of vacuum pump, the auxiliary clamping mechanism includes a clamping cylinder, an auxiliary clamping claw is provided at the output end of the clamping cylinder, and an arc-shaped groove is provided on the inner side of the auxiliary clamping claw to clamp the upper convex ring of the semi-circular limiting ring.

[0009] As another improvement of the piston body assembly mechanism of the present invention for automated assembly equipment of vacuum pump, a first positioning protrusion and a first positioning groove are respectively provided on the inner side of one of the first pneumatic gripping claws, and a second positioning groove and a second positioning protrusion are correspondingly provided on the inner side of the other first pneumatic gripping claw.

[0010] As another improvement of the piston body assembly mechanism of the present invention for automated assembly equipment of vacuum pump, the semi-circular limiting ring includes a limiting ring body, an upper protruding ring is provided on the upper end face of the limiting ring body, a connecting protruding post is provided at one end of the limiting ring body, and a connecting groove is provided at the other end of the limiting ring body.

[0011] As another improvement of the piston body assembly mechanism of the present invention for automated assembly equipment of vacuum pump, the vibratory plate mechanism includes a vibratory plate, a discharge channel is provided on the discharge port of the vibratory plate, a long boss is provided on one side of the discharge channel along the length direction, the connecting protrusion abuts against the long boss, a limiting seat is provided at the discharge end of the discharge channel, a limiting groove is provided in the limiting seat, and a clearance groove communicating with the limiting groove is provided on one side of the limiting groove.

[0012] As another improvement of the piston assembly mechanism of the automated assembly equipment for vacuum pumps of this utility model, a limiting inclined surface is provided at the connection between the limiting seat and the discharge channel, a positioning inclined surface is provided at the corresponding position of the discharge channel and the limiting inclined surface, a bearing seat is provided on the machine base, a vertical waist-shaped hole is provided on the bearing seat, the discharge channel is movably disposed on the bearing seat, a limiting shaft is provided at the corresponding position of the discharge channel and the vertical waist-shaped hole, the limiting shaft is movably disposed in the vertical waist-shaped hole, and a lifting cylinder is provided on the side of the bearing seat near the vibratory plate.

[0013] As another improvement to the piston assembly mechanism of the present invention for automated assembly equipment of vacuum pump, a first detection head is provided on both sides of the limiting seat.

[0014] As another improvement to the piston assembly mechanism of the present invention for automated assembly equipment of vacuum pump, a second detection head is provided on the feed end of the discharge channel.

[0015] As another improvement of the piston body assembly mechanism of the present invention for an automated assembly equipment for vacuum pumps, the limiting ring conveying mechanism includes a support frame, a transverse guide rail on the support frame, a sliding seat on the transverse guide rail, a telescopic cylinder on the sliding seat, a second pneumatic clamping claw vertically downward at the output end of the telescopic cylinder, a clamping protrusion at the lower end of the second pneumatic clamping claw, and an electric push rod on the support frame, the output end of which is connected to the sliding seat.

[0016] As another improvement of the piston body assembly mechanism of the present invention for automated assembly equipment of vacuum pump, a positioning block is provided in the middle of one side of the sliding seat, and a buffer is provided in the support frame at the corresponding position of the positioning block.

[0017] In summary, the advantages of this utility model compared to the prior art are: the utility model has a simple structure, can achieve automated assembly, has high assembly efficiency, and stable product quality. Attached Figure Description

[0018] Figure 1This is a three-dimensional schematic diagram of the present invention.

[0019] Figure 2 This is a three-dimensional schematic diagram of the limiting ring conveying mechanism of this utility model.

[0020] Figure 3 This is one of the three-dimensional schematic diagrams of the vibratory feeder mechanism of this utility model.

[0021] Figure 4 This is the second three-dimensional schematic diagram of the vibratory feeder mechanism of this utility model.

[0022] Figure 5 This is the third three-dimensional schematic diagram of the vibratory feeder mechanism of this utility model.

[0023] Figure 6 This is a three-dimensional schematic diagram of the auxiliary clamping mechanism of this utility model.

[0024] Figure 7 This is a schematic diagram of the first pneumatic gripper of this utility model.

[0025] Figure 8 This is a three-dimensional schematic diagram of the limiting ring conveying mechanism of this utility model. Detailed Implementation

[0026] The above-mentioned and other technical features and advantages of this utility model will be described in more detail below with reference to the accompanying drawings.

[0027] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0028] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0029] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] like Figure 1-8 As shown, a piston assembly mechanism for an automated vacuum pump assembly equipment includes a machine platform 1. A first turntable 101 is mounted on the machine platform 1. Multiple piston positioning fixtures 102 are evenly distributed along the circumference of the first turntable 101. On a second machine platform 1 outside the first turntable 101, arranged clockwise at intervals, are a piston feeding mechanism 103, a piston seal assembly mechanism 104 for feeding piston seals into the piston positioning fixtures 102 and pressing them, a limiting ring conveying mechanism, a cylinder conveying mechanism 105 for flipping cylinders on a transfer fixture 108 and feeding them into the piston positioning fixtures 102, a pressing mechanism 106 for fitting cylinders onto the piston body, and a conveying mechanism 107 for feeding the assembled cylinders onto a conveying mechanism. The transfer fixture 108 includes a second delivery mechanism 109; the limiting ring conveying mechanism includes a second turntable 2 mounted on the machine base 1, mounting platforms 3 evenly distributed along the circumferential direction on the second turntable 2, two first pneumatic gripping claws 4 that can move relative to each other mounted on the mounting platforms 3, each first pneumatic gripping claw 4 having a positioning groove 6 for accommodating a semi-circular limiting ring 5, a vibratory feeder mechanism 7 symmetrically mounted on the machine base 1 on both sides of the second turntable 2, a limiting ring conveying mechanism 8 between the vibratory feeder mechanism 7 and the second turntable 2 for sending the limiting ring 5 from the discharge end of the vibratory feeder mechanism 7 into the positioning groove 6, and an auxiliary gripping mechanism 9 above the first pneumatic gripping claws 4 to prevent the semi-circular limiting ring 5 from dislodging from the positioning groove 6 during the pressing process. The semi-circular limiting ring 5 of this utility model is fed out after being sorted by the vibratory feeder mechanism 7, and then grasped and moved into the positioning groove 6 of the first pneumatic gripper 4 by the limiting ring conveying mechanism 8. The limiting ring conveying mechanisms 8 on both sides respectively convey the semi-circular limiting ring 5 in a fixed direction into the positioning groove 6. During assembly, the two first pneumatic gripper 4 are controlled to close relative to each other. At the same time, the auxiliary gripping mechanism 9 works, and the semi-circular limiting rings 5 ​​on both sides are restricted in the positioning groove 6, thereby ensuring that they will not detach during the assembly process, ensuring accurate alignment, and greatly improving assembly efficiency. For the specific structure of the piston body feeding mechanism 103, piston seal assembly mechanism 104, cylinder body conveying mechanism 105, pressing mechanism 106 and second delivery mechanism 109 described in this application, please refer to the invention patent application 2024116557184 filed by the applicant on November 19, 2024, an automated assembly equipment for a vacuum pump.

[0031] The auxiliary clamping mechanism 9 of this invention includes a clamping cylinder 10, an auxiliary clamping claw 11 is provided at the output end of the clamping cylinder 10, and an arc-shaped groove 13 is provided on the inner side of the auxiliary clamping claw 11 to clamp the upper convex ring 12 of the semi-circular limiting ring 5. The auxiliary clamping claw 11 can effectively restrict the semi-circular limiting ring 5 within the positioning groove 6, thereby preventing displacement when the two semi-circular limiting rings 5 ​​are assembled together.

[0032] In this invention, a first positioning protrusion 14 and a first positioning groove 15 are respectively provided on the inner side of one of the first pneumatic grippers 4, and a second positioning groove and a second positioning protrusion are correspondingly provided on the inner side of the other first pneumatic gripper 4. During assembly, the first positioning protrusion 14 is inserted into the second positioning groove, and the second positioning protrusion is inserted into the second positioning groove, so that the two semi-circular limiting rings 5 ​​can be assembled into a circular limiting ring.

[0033] The semi-circular limiting ring 5 of this utility model includes a limiting ring body 18, an upper protruding ring 12 is provided on the upper end surface of the limiting ring body 18, a connecting protruding post 19 is provided at one end of the limiting ring body 18, and a connecting groove 20 is provided at the other end of the limiting ring body 18.

[0034] The vibratory feeder mechanism 7 of this utility model includes a vibratory feeder 21. A discharge channel 22 is provided on the discharge port of the vibratory feeder 21. A long boss 23 is provided along the length direction on one side of the discharge channel 22. A connecting protrusion 19 abuts against the long boss 23. The end face of the semi-circular limiting ring 5 abuts against the side wall of the long boss 23. A limiting seat 24 is provided at the discharge end of the discharge channel 22. A limiting groove 25 is provided in the limiting seat 24. A short boss corresponding to the long boss 23 is provided in the limiting groove 25. A clearance groove 26 communicating with the limiting groove 25 is provided on one side of the limiting groove 25. A first detection head 27 is provided on both sides of the limiting seat 24. A second detection head 28 is provided at the feed end of the discharge channel 22. This invention uses a vibratory feeder 21 to feed the semi-circular limiting rings 5 ​​into the discharge channel 22 in a predetermined direction. The number of semi-circular limiting rings 5 ​​in the discharge channel 22 can be detected by the second detection head 28 and the first detection head 27, thereby controlling the operation of the vibratory feeder 21.

[0035] In this utility model, a limiting inclined surface 38 is provided at the connection between the limiting seat 24 and the discharge channel 22, and a positioning inclined surface 39 is provided at the corresponding position of the discharge channel 22 and the limiting inclined surface 38. A bearing seat 40 is provided on the machine base 1, and a vertical waist-shaped hole 41 is provided on the bearing seat 40. The discharge channel 22 is movably disposed on the bearing seat 40. A limiting shaft 42 is provided at the corresponding position of the discharge channel 22 and the vertical waist-shaped hole 41. The limiting shaft 42 is movably disposed in the vertical waist-shaped hole 41. A lifting cylinder 43 is provided on the side of the bearing seat 40 near the vibrating plate 21. After the material conveying of the vibratory feeder 21 is completed, the semi-circular limiting ring 5 in the discharge channel 22 can no longer continue to convey forward due to the forward thrust of the subsequent workpiece. At this time, the lifting cylinder 43 can be controlled to lift and drive the feeding end of the discharge channel 22 to rotate upward, so that the discharge channel 22 forms a channel that is inclined forward. Due to the action of the limiting shaft 42, the positioning inclined surface 39, and the limiting inclined surface 38, the discharge end of the discharge channel 22 is still connected to the limiting groove 25 of the limiting seat 24. Therefore, under the action of gravity, the tail material in the discharge channel 22 can be smoothly sent out.

[0036] The limiting ring conveying mechanism 8 of this utility model includes a support frame 29, a transverse guide rail 30 on the support frame 29, a sliding seat 31 on the transverse guide rail 30, a telescopic cylinder 32 on the sliding seat 31, a second pneumatic gripper 33 vertically downwardly positioned at the output end of the telescopic cylinder 32, a gripping protrusion 34 at the lower end of the second pneumatic gripper 33, and an electric push rod 35 on the support frame 29, the output end of which is connected to the sliding seat 31. A positioning block 36 is provided in the middle of one side of the sliding seat 31, and a buffer 37 is provided at the corresponding position on the support frame 29 and the positioning block 36.

[0037] This utility model can control the sliding seat 31 to move above the limiting seat 24 by the electric push rod 35, and control the second pneumatic clamping claw 33 to move down by the telescopic cylinder 32. One clamping protrusion 34 is located inside the semi-circular limiting ring 5, and the other clamping protrusion 34 is located at the relief groove 26. The second pneumatic clamping claw 33 retracts, and the two clamping protrusions 34 clamp the semi-circular limiting ring 5. Then, the telescopic cylinder 32 is controlled to retract, so that the second pneumatic clamping claw 33 moves up, and the sliding seat 31 is controlled to move to the first pneumatic clamping claw 4 by the electric push rod 35.

[0038] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A piston assembly mechanism for an automated assembly equipment for a vacuum pump, comprising a machine platform (1), a first turntable (101) on the machine platform (1), a plurality of piston positioning fixtures (102) evenly distributed along the circumferential direction on the first turntable (101), and a piston feeding mechanism (103), a piston seal assembly mechanism (104), a limiting ring conveying mechanism (100), a cylinder conveying mechanism (105), a pressing mechanism (106), and a second delivery mechanism (109) arranged sequentially in a clockwise direction on a second machine platform (1) outside the first turntable (101); characterized in that: The limiting ring conveying mechanism (100) includes a second turntable (2) set on the machine base (1), mounting platforms (3) are evenly distributed along the circumferential direction on the second turntable (2), and two first pneumatic gripping claws (4) that can move relative to each other are set on the mounting platforms (3). Each first pneumatic gripping claw (4) is respectively provided with a positioning groove (6) that can accommodate a semi-circular limiting ring (5). Vibration disk mechanisms (7) are symmetrically arranged on the machine base (1) on both sides of the second turntable (2). A limiting ring conveying mechanism (8) is provided between the vibration disk mechanism (7) and the second turntable (2) to send the limiting ring (5) at the discharge end of the vibration disk mechanism (7) into the positioning groove (6). An auxiliary gripping mechanism (9) is provided above the first pneumatic gripping claws (4) to prevent the semi-circular limiting ring from detaching from the positioning groove (6) during the pressing process.

2. The piston body assembly mechanism for an automated vacuum pump assembly device according to claim 1, characterized in that: The auxiliary clamping mechanism (9) includes a clamping cylinder (10), an auxiliary clamping claw (11) is provided at the output end of the clamping cylinder (10), and an arc groove (13) is provided on the inner side of the auxiliary clamping claw (11) to clamp the upper protruding ring (12) of the semi-circular limiting ring (5).

3. The piston body assembly mechanism for an automated vacuum pump assembly device according to claim 1, characterized in that: A first positioning protrusion (14) and a first positioning groove (15) are respectively provided on the inner side of one of the first pneumatic grippers (4), and a second positioning groove and a second positioning protrusion are respectively provided on the inner side of the other first pneumatic gripper (4).

4. The piston body assembly mechanism for an automated vacuum pump assembly device according to claim 2, characterized in that: The semi-circular limiting ring (5) includes a limiting ring body (18), an upper protruding ring (12) is provided on the upper end face of the limiting ring body (18), a connecting protruding post (19) is provided at one end of the limiting ring body (18), and a connecting groove (20) is provided at the other end of the limiting ring body (18).

5. A piston body assembly mechanism for an automated vacuum pump assembly device according to claim 4, characterized in that: The vibratory feeder mechanism (7) includes a vibratory feeder (21), a discharge channel (22) is provided on the discharge port of the vibratory feeder (21), a long boss (23) is provided on one side of the discharge channel (22) along the length direction, the connecting protrusion (19) abuts against the long boss (23), a limiting seat (24) is provided at the discharge end of the discharge channel (22), a limiting groove (25) is provided in the limiting seat (24), and a clearance groove (26) connected to the limiting groove (25) is provided on one side of the limiting groove (25).

6. A piston body assembly mechanism for an automated vacuum pump assembly device according to claim 5, characterized in that: A limiting inclined surface (38) is provided at the connection between the limiting seat (24) and the discharge channel (22). A positioning inclined surface (39) is provided at the corresponding position between the discharge channel (22) and the limiting inclined surface (38). A bearing seat (40) is provided on the machine base (1). A vertical waist-shaped hole (41) is provided on the bearing seat (40). The discharge channel (22) is movably disposed on the bearing seat (40). A limiting shaft (42) is provided at the corresponding position between the discharge channel (22) and the vertical waist-shaped hole (41). The limiting shaft (42) is movably disposed in the vertical waist-shaped hole (41). A lifting cylinder (43) is provided on the side of the bearing seat (40) near the vibratory plate (21).

7. A piston assembly mechanism for an automated assembly equipment for a vacuum pump according to claim 5, characterized in that: First detection heads (27) are respectively provided on both sides of the limiting seat (24).

8. A piston assembly mechanism for an automated assembly equipment for a vacuum pump according to claim 5, characterized in that: A second detection head (28) is provided on the feed end of the discharge channel (22).

9. A piston assembly mechanism for an automated vacuum pump assembly device according to claim 1, characterized in that: The limiting ring conveying mechanism (8) includes a support frame (29), a transverse guide rail (30) is provided on the support frame (29), a sliding seat (31) is provided on the transverse guide rail (30), a telescopic cylinder (32) is provided on the sliding seat (31), a second pneumatic gripper (33) is provided vertically downward at the output end of the telescopic cylinder (32), a gripping protrusion (34) is provided at the lower end of the second pneumatic gripper (33), an electric push rod (35) is provided on the support frame (29), and the output end of the electric push rod (35) is connected to the sliding seat (31).

10. A piston body assembly mechanism for an automated assembly equipment for a vacuum pump according to claim 9, characterized in that: A positioning block (36) is provided in the middle of one side of the sliding seat (31), and a buffer (37) is provided in the corresponding position of the support frame (29) and the positioning block (36).

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