A circlip press machine

Abstract

The present invention belongs to the technical field of machining machine tools, and relates to a spring press machine, comprising a base, a press head for press-fitting springs is arranged above the base, a workpiece to be press-fitted springs is arranged below the press head, a vertical sliding slide is arranged on the front side of the base, a guide sleeve and a separation sleeve are arranged on the slide, the inner hole of the guide sleeve is a tapered hole with a reduced diameter from top to bottom, the upper end aperture is adapted to the maximum outer diameter of the spring, the lower end aperture is the same as the aperture of the separation sleeve and the workpiece, a connecting convex ring extends downward from the inner hole at the bottom of the separation sleeve, the outer wall of the connecting convex ring is adapted to the chamfer of the workpiece, during press fitting, the slide moves downward and the separation sleeve moves toward each other until the connecting convex ring is inserted into the chamfer of the workpiece, and the inner hole of the guide sleeve, the inner hole of the separation sleeve and the inner hole of the workpiece form a coaxial spring conveying connecting hole. The spring press machine provided by the present invention improves the automation degree and press fitting efficiency of spring press fitting.

Description

Technical Field

[0001] The invention belongs to the technical field of processing machine tools and relates to a clamping spring press machine. Background Art

[0002] In machine tool processing, there are many workpieces that need to be pressed with retaining springs. The structure is generally that an annular retaining groove is set on the inner wall of the workpiece. After the retaining spring is pressed into the workpiece, the retaining spring automatically opens at the position of the annular retaining groove to form an axial limiting structure for the internal components of the workpiece.

[0003] For example, a spring safety valve is a workpiece of this type. The spring safety valve includes a plastic part, a spring, a copper block and a retaining spring. When assembling the spring safety valve, the spring and the copper block need to be placed in the plastic part in turn, and then the retaining spring is pressed in and the spring and the copper block are axially limited to complete the assembly.

[0004] The shortcoming of the existing retaining spring press is that the upper end of the workpiece is provided with a chamfer. When the retaining spring reaches the chamfered position, since the inner diameter of the chamfer is larger than the inner diameter of the workpiece, the retaining spring will automatically open prematurely and cannot move smoothly into the inside of the workpiece, seriously affecting the degree of automation and efficiency of retaining spring press installation. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a clamp spring press-fitting machine, which improves the automation degree and press-fitting efficiency of the clamp spring press-fitting.

[0006] In order to solve the above technical problems, the purpose of the present invention is achieved through the following technical solutions:

[0007] A retaining ring press machine comprises a base, a pressing head for pressing retaining rings is arranged above the base, a workpiece to be pressed with retaining rings is arranged below the pressing head, a vertically sliding slide is arranged on the front side of the base, a guide sleeve and a separation sleeve are arranged on the slide, the inner hole of the guide sleeve is a tapered hole with a reduced diameter from top to bottom, the upper end hole diameter is matched with the maximum outer diameter of the retaining ring, and the lower end hole diameter is the same as the hole diameter of the separation sleeve and the workpiece, a connecting convex ring extends downward from the inner hole at the bottom of the separation sleeve, and the outer wall of the connecting convex ring is matched with the chamfer of the workpiece. During press fitting, the slide moves downward and the separation sleeve moves toward each other until the connecting convex ring is inserted into the chamfer of the workpiece, and the inner holes of the guide sleeve, the separation sleeve and the workpiece form a coaxial retaining ring conveying connecting hole.

[0008] In the above-mentioned retaining ring press machine, the pressing head, guide sleeve, separation sleeve and workpiece are coaxially arranged, and the retaining ring conveying connecting hole refers to an integral hole structure that is connected in sequence and has a smooth transition between the hole walls. The upper section of the integral hole structure is a conical hole, and the lower section is a cylindrical hole.

[0009] In the above-mentioned retaining ring press machine, a pressure head cylinder for driving the pressure head is arranged on the top of the base, and a slide plate cylinder for driving the slide plate is arranged on the front side of the base. Further, a cylinder mounting plate is arranged on the top of the base, the pressure head cylinder is mounted on the cylinder mounting plate, and its piston rod vertically passes through the cylinder mounting plate and is connected to the pressure head. Further, the slide plate is slidingly arranged on a pair of vertical slide rails on the front side of the base, and the slide plate cylinder is arranged above the slide plate, and its piston rod is arranged vertically downward and is connected to the slide plate.

[0010] In the above-mentioned retaining ring press machine, the separation sleeve can be driven independently, and the separation sleeve can be driven by the separation sleeve cylinder to move toward or away from each other; the separation sleeve can also be driven by a slide plate cylinder. When driven by a slide plate cylinder, its structure is as follows: a pair of guide fixing plates are arranged on the front side of the slide plate, a guide rod is arranged between the guide fixing plates, the separation sleeve is slidingly arranged on the guide rod, a cone angle fixing plate is fixed on the front side of the base, a pair of cone angle driving blocks are arranged on the cone angle fixing plate, and an inclined surface cooperating with the cone angle driving block is arranged at the bottom of the separation sleeve, and when the separation sleeve moves downward, the cone angle driving block drives it to slide inward. Preferably, the inclination angle of the cone angle driving block and the inclined surface is consistent with the chamfer of the workpiece and the outer wall of the connecting convex ring. Furthermore, a spring for driving the separation sleeve to separate is sleeved on the guide rod.

[0011] In the above-mentioned retaining ring press machine, the upper end of the separation sleeve is provided with a semicircular limiting notch adapted to the outer wall of the guide sleeve, and the radial dimension of the limiting notch is the same as the wall thickness of the guide sleeve. When the separation sleeve is closed, the separation sleeve hugs the guide sleeve through its limiting notch. When hugging, the inner wall of the limiting notch contacts the outer wall of the guide sleeve, and the bottom of the limiting notch contacts the bottom of the guide sleeve.

[0012] In the above-mentioned clamping spring press machine, a plurality of coaxial elastic fan-shaped rods are arranged at the bottom of the press head, and the elastic fan-shaped rods are arranged at intervals. During press-fitting, the elastic fan-shaped rods shrink inwardly as the aperture of the guide sleeve changes. Preferably, four elastic fan-shaped rods are arranged.

[0013] In the above-mentioned retaining ring press machine, the guide sleeve is fixed on the slide plate through a sleeve fixing block, a feed guide is provided on the sleeve fixing block, a feed channel connected to the guide sleeve is provided in the feed guide, and a through hole for the pressure head to pass through is provided at a position corresponding to the guide sleeve. Further, the feed guide includes an upper guide plate and a lower guide plate, the feed channel is formed between the upper guide plate and the lower guide plate, and the feed channel is provided on one side of the guide sleeve.

[0014] In the above-mentioned retaining ring press machine, a feed seat is provided on one side of the feed guide plate, and a feed telescopic plate driven by a feed cylinder and coordinated with a feed channel is provided on the feed seat, and an arc-shaped notch for accommodating the retaining ring is provided at the feed end of the feed telescopic plate.

[0015] In the above-mentioned retaining spring press machine, the base is slidably arranged on the bottom plate, and the base cylinder drives the base to slide between the loading station and the pressing station. When the base is located at the loading station, the feed seat and the feed guide plate are connected as one, and the feed telescopic plate and the feed channel are located in corresponding positions.

[0016] In the above-mentioned clamp spring press machine, a vibration plate for conveying the clamp spring is arranged on one side of the feed seat. The outlet end of the vibration plate can be directly connected to the arc-shaped notch to convey the clamp spring, or can be arranged at a distance from the arc-shaped notch, and the clamp spring is conveyed to the arc-shaped notch by a linear vibration conveyor or a small push plate driven by a cylinder.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention provides a retaining ring press machine, in which a separation sleeve is arranged between a guide shaft sleeve and a workpiece, and a connecting convex ring is arranged at the bottom of the separation sleeve. The connecting convex ring is utilized to fill the chamfer of the workpiece to form a connecting hole from top to bottom, and the inner wall of the connecting hole forms a smooth transition. During the conveying process, the retaining ring is no longer affected by the chamfer of the workpiece and opens in advance, so that it is smoothly conveyed to the annular groove inside the workpiece, thereby ensuring the automation degree and pressing efficiency of the retaining ring press.

[0019] 2. The connecting convex ring of the present invention adopts a split structure and an oblique sliding method to cooperate with the chamfer of the workpiece, and the cooperation process is smoother, and the required processing accuracy is not high. When the separation sleeve of the present invention is closed, it can hold the guide sleeve tightly to ensure the concentricity of the connecting hole, so that the retaining spring can be smoothly transported. In addition, the present invention sets a cone angle drive structure under the separation sleeve, and the separation sleeve automatically holds the guide sleeve as the slide plate moves downward, which not only reduces the drive structure, but also makes the movement accuracy higher.

[0020] 3. The present invention further provides an automated feeding mechanism, which automatically feeds the retaining spring to the upper end of the inner hole of the guide sleeve, i.e., the initial position of the press-fit retaining spring, through a feeding channel formed by a feeding retractable plate and a feeding guide plate driven by a power device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a stereogram of the present invention;

[0022] Figure 2 is a three-dimensional diagram of the press-fitting mechanism of the present invention;

[0023] Figure 3 yes Figure 2Axial cross-sectional view of

[0024] Figure 4 It is a structural diagram of the conveying connecting hole of the clip spring of the present invention;

[0025] Figure 5 yes Figure 4 A partial enlarged view of

[0026] Figure 6 It is a driving structure diagram of the separation sleeve of the present invention;

[0027] Figure 7 It is a three-dimensional diagram of the feeding mechanism of the present invention;

[0028] Figure numerals: 1. base; 2. retaining spring; 3. pressure head; 4. workpiece; 5. slide plate; 6. guide sleeve; 7. separation sleeve; 8. connecting convex ring; 9. pressure head cylinder; 10. slide plate cylinder; 11. guide fixing plate; 12. guide rod; 13. cone angle fixing plate; 14. cone angle driving block; 15. inclined plane; 16. limiting notch; 17. elastic fan-shaped rod; 18. sleeve fixing block; 19. feed guide plate; 20. feed channel; 21. feed seat; 22. feed cylinder; 23. feed telescopic plate; 24. arc notch; 25. bottom plate; 26. base cylinder; 27. vibration disk. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to specific embodiments of the present invention. Figure 1-7 :

[0030] A press machine for mounting a retaining ring 2 comprises a base 1, a pressing head 3 for mounting the retaining ring 2 is arranged above the base 1, a workpiece 4 to be mounted with the retaining ring 2 is arranged below the pressing head 3, a vertically sliding slide plate 5 is arranged on the front side of the base 1, a guide sleeve 6 and a separation sleeve 7 are arranged on the slide plate 5, the inner hole of the guide sleeve 6 is a tapered hole with a reduced diameter from top to bottom, the upper end hole diameter thereof is matched with the maximum outer diameter of the retaining ring 2, and the lower end hole diameter is the same as the hole diameter of the separation sleeve 7 and the workpiece 4, a connecting convex ring 8 extends downward from the inner hole at the bottom of the separation sleeve 7, and the outer wall of the connecting convex ring 8 is matched with the chamfer of the workpiece 4. During the press mounting, the slide plate 5 moves downward and the separation sleeve 7 moves toward each other until the connecting convex ring 8 is inserted into the chamfer of the workpiece 4, and the inner holes of the guide sleeve 6, the separation sleeve 7 and the workpiece 4 form a coaxial conveying connecting hole for the retaining ring 2. For reference, see the attached drawings. Figure 4 The pressure head 3, guide sleeve 6, separation sleeve 7 and workpiece 4 are coaxially arranged, and the conveying connecting hole of the retaining spring 2 refers to an integral hole structure which is connected in sequence and has a smooth transition of the hole wall. The upper section of the integral hole structure is a conical hole, and the lower section is a cylindrical hole.

[0031] Compare with Figure 2 and attached Figure 3The working method of this embodiment is: first, the workpiece 4 to be press-fitted with the retaining ring 2 is loaded into the centering fixture, and then the retaining ring 2 is fed into the upper end of the inner hole of the guide sleeve 6. At this time, the retaining ring 2 is in an open state, falls into the inner hole of the guide sleeve 6 at a position that matches its outer diameter and stops there. The power device drives the slide plate 5 to drive the guide sleeve 6 and the separation sleeve 7 to move downward, and at the same time, the power device drives the two separation sleeves 7 to move inwardly toward each other. After the separation sleeve 7 is closed, its connecting convex ring 8 is inserted into the chamfer of the workpiece 4 to form a connecting structure (as shown in the attached figure). Figure 5 At this time, the inner hole of the guide sleeve 6, the inner hole of the separation sleeve 7 (including the inner hole of the connecting convex ring 8) and the inner hole of the workpiece 4 form a coaxial conveying connecting hole of the retaining spring 2 (as shown in the attached Figure 4 As shown), the press-fitting operation can be carried out afterwards. The power device drives the pressure head 3 to move downward into the conveying connecting hole of the retaining spring 2 and pushes the retaining spring 2 to move downward. During the downward movement of the retaining spring 2, the diameter gradually shrinks along with the tapered hole. When it reaches the lower end of the inner hole of the guide sleeve 6, the outer diameter of the retaining spring 2 is the same as the inner diameter of the workpiece 4. Then the retaining spring 2 maintains this outer diameter and continues to move downward along the cylindrical hole to the inside of the workpiece 4. When it reaches the inner wall groove of the workpiece 4, the retaining spring 2 opens to complete the press-fitting.

[0032] The driving structure of this embodiment is as follows: a pressure head cylinder 9 for driving the pressure head 3 is arranged on the top of the base 1, and a slide plate cylinder 10 for driving the slide plate 5 is arranged on the front side of the base 1. Further, a cylinder mounting plate is arranged on the top of the base 1, and the pressure head cylinder 9 is mounted on the cylinder mounting plate, and its piston rod vertically passes through the cylinder mounting plate downward and is connected to the pressure head 3. Further, the slide plate 5 is slidably arranged on a pair of vertical slide rails on the front side of the base 1, and the slide plate cylinder 10 is arranged above the slide plate 5, and its piston rod is arranged vertically downward and is connected to the slide plate 5.

[0033] The separation sleeve 7 can be driven independently, and the separation sleeve 7 can be driven by the cylinder of the separation sleeve 7 to move toward or away from each other; in this embodiment, the separation sleeve 7 can be driven by the cylinder of the separation sleeve 7 to move toward or away from each other; Figure 6, the separation sleeve 7 is driven by a slide cylinder 10, and its structure is: a pair of guide fixing plates 11 are arranged on the front side of the slide 5, a guide rod 12 is arranged between the guide fixing plates 11, the separation sleeve 7 is slidably arranged on the guide rod 12, a cone angle fixing plate 13 is fixed on the front side of the base 1, a pair of cone angle driving blocks 14 are arranged on the cone angle fixing plate 13, and an inclined surface 15 cooperating with the cone angle driving block 14 is arranged at the bottom of the separation sleeve 7, and the cone angle driving block 14 drives the separation sleeve 7 to slide inward when the separation sleeve 7 moves downward. Preferably, the inclination angles of the cone angle driving block 14 and the inclined surface 15 are consistent with the chamfer of the workpiece 4 and the outer wall of the connecting convex ring 8. Furthermore, a spring for driving the separation sleeve 7 to separate is sleeved on the guide rod 12, and the spring drives the separation sleeve 7 to reset when the press-fitting is completed and moves upward. Its working method is: the slide plate 5 moves downward, and the separation sleeve 7 on the slide plate 5 moves downward accordingly. The inclined surface 15 of the separation sleeve 7 interacts with the stationary cone-angle driving block 14, squeezing the separation sleeve 7 to move inward along the guide rod 12. The overall movement direction of the separation sleeve 7 is obliquely downward. When the slide plate 5 moves into place, the connecting convex ring 8 on the separation sleeve 7 just slides into the chamfer of the workpiece 4.

[0034] Compare with Figure 4 The upper end of the separation sleeve 7 is provided with a semicircular limiting notch 16 adapted to the outer wall of the guide sleeve 6. The radial dimension of the limiting notch 16 is the same as the wall thickness of the guide sleeve 6. When the separation sleeve 7 is closed, the separation sleeve 7 hugs the guide sleeve 6 through its limiting notch 16. When hugging, the inner wall of the limiting notch 16 conflicts with the outer wall of the guide sleeve 6, and the bottom of the limiting notch 16 conflicts with the bottom of the guide sleeve 6. The above structure can ensure the concentricity of the connecting hole, so that the retaining spring 2 can be smoothly transported.

[0035] In order to make the pressure head 3 push the clamping spring 2 better, a plurality of coaxial elastic fan-shaped rods 17 are arranged at the bottom of the pressure head 3. The elastic fan-shaped rods 17 are arranged at intervals. When pressing, the elastic fan-shaped rods 17 shrink inwardly with the change of the aperture of the guide sleeve 6. In this embodiment, four elastic fan-shaped rods 17 are arranged.

[0036] This embodiment further provides an automatic feeding structure:

[0037] The guide sleeve 6 is fixed on the slide plate 5 through a sleeve fixing block 18, and a feed guide plate 19 is provided on the sleeve fixing block 18. A feed channel 20 connected to the guide sleeve 6 is provided in the feed guide plate 19, and a through hole for the pressure head 3 to pass through is provided at a position corresponding to the guide sleeve 6. Further, the feed guide plate 19 includes an upper guide plate and a lower guide plate, and the feed channel 20 is formed between the upper guide plate and the lower guide plate, and the feed channel 20 is provided on one side of the guide sleeve 6.

[0038] Compare with Figure 7 A feed seat 21 is provided on one side of the feed guide plate 19, and a feed telescopic plate 23 driven by a feed cylinder 22 and coordinated with the feed channel 20 is provided on the feed seat 21. An arc-shaped notch 24 for accommodating the retaining spring 2 is provided at the feed end of the feed telescopic plate 23, and an avoidance cavity for the feed telescopic plate 23 is provided on the feed guide plate 19, and the avoidance cavity is used to avoid the feed telescopic plate 23 outside the arc-shaped notch 24.

[0039] Furthermore, the base 1 is slidably arranged on the bottom plate 25, and the base cylinder 26 drives the base 1 to slide between the loading station and the pressing station. When the base 1 is located at the loading station, the feed seat 21 and the feed guide plate 19 are connected as a whole, and the feed telescopic plate 23 and the feed channel 20 are located at corresponding positions.

[0040] Furthermore, a vibration plate 27 for conveying the clip 2 is provided on one side of the feed seat 21. The outlet end of the vibration plate 27 can be directly connected to the arc-shaped notch 24 to convey the clip 2, or can be spaced apart from the arc-shaped notch 24, and the clip 2 is conveyed to the arc-shaped notch 24 by a linear vibration conveyor or a small push plate driven by a cylinder.

[0041] The automatic feeding process of this embodiment is: the base cylinder 26 drives the base 1 to slide backward along the guide rail to the loading station, the feeding seat 21 and the feeding guide plate 19 are connected, the vibration plate 27 conveys the retaining spring 2 to the arc-shaped notch 24, and the feeding cylinder 22 drives the feeding telescopic plate 23 to carry the retaining spring 2 to move forward along the feeding channel 20. When the arc-shaped notch 24 moves to the position corresponding to the guide sleeve 6, the retaining spring 2 falls into the inner hole of the guide sleeve 6, and the feeding telescopic plate 23 is reset. Then the base cylinder 26 drives the base 1 to slide forward along the guide rail to the pressing station for pressing operation.

[0042] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A clamping spring press machine, comprising a base (1), a pressing head (3) for pressing a clamping spring (2) is arranged above the base (1), and a workpiece (4) to be pressed into the clamping spring (2) is arranged below the pressing head (3), characterized in that: A vertically sliding slide plate (5) is arranged on the front side of the base (1), and a guide sleeve (6) and a separation sleeve (7) are arranged on the slide plate (5). The inner hole of the guide sleeve (6) is a tapered hole with a reduced diameter from top to bottom, and the upper end hole diameter thereof is adapted to the maximum outer diameter of the retaining spring (2), and the lower end hole diameter is the same as the hole diameters of the separation sleeve (7) and the workpiece (4). A connecting convex ring (8) extends downward from the inner hole at the bottom of the separation sleeve (7), and the outer wall of the connecting convex ring (8) is adapted to the chamfer of the workpiece (4). During press-fitting, the slide plate (5) moves downward and the separation sleeve (7) moves toward each other until the connecting convex ring (8) is inserted into the chamfer of the workpiece (4), and the inner hole of the guide sleeve (6), the inner hole of the separation sleeve (7) and the inner hole of the workpiece (4) form a coaxial retaining spring conveying connecting hole; A pressure head cylinder (9) for driving the pressure head (3) is arranged on the top of the base (1), a slide plate cylinder (10) for driving the slide plate (5) is arranged on the front side of the base (1), a pair of guide fixing plates (11) are arranged on the front side of the slide plate (5), a guide rod (12) is arranged between the guide fixing plates (11), the separation sleeve (7) is slidably arranged on the guide rod (12), a cone angle fixing plate (13) is fixed on the front side of the base (1), a pair of cone angle driving blocks (14) are arranged on the cone angle fixing plate (13), and an inclined surface (15) cooperating with the cone angle driving block (14) is arranged on the bottom of the separation sleeve (7), and when the separation sleeve (7) moves downward, the cone angle driving block (14) drives it to slide inward.

2. A circlip press machine according to claim 1, characterized in that: The upper end of the separation sleeve (7) is provided with a semicircular limiting notch (16) adapted to the outer wall of the guide sleeve (6); the radial dimension of the limiting notch (16) is the same as the wall thickness of the guide sleeve (6); when the separation sleeve (7) is closed, the separation sleeve (7) holds the guide sleeve (6) tightly through its limiting notch (16).

3. The circlip press machine according to claim 1, characterized in that: A plurality of coaxial elastic fan-shaped rods (17) are arranged at the bottom of the pressing head (3). The elastic fan-shaped rods (17) are arranged at intervals. When pressed, the elastic fan-shaped rods (17) shrink inwardly as the aperture of the guide sleeve (6) changes.

4. The circlip press machine according to claim 1, characterized in that: The guide sleeve (6) is fixed on the slide plate (5) via a sleeve fixing block (18); a feed guide plate (19) is provided on the sleeve fixing block (18); a feed channel (20) communicating with the guide sleeve (6) is provided in the feed guide plate (19); a through hole for the pressure head (3) to pass through is provided at a position corresponding to the guide sleeve (6) on the feed guide plate (19).

5. The circlip press machine according to claim 4, characterized in that: A feed seat (21) is provided on one side of the feed guide plate (19), and a feed telescopic plate (23) driven by a feed cylinder (22) and cooperating with a feed channel (20) is provided on the feed seat (21), and an arc-shaped notch (24) for accommodating a retaining spring (2) is provided at the feed end of the feed telescopic plate (23).

6. The circlip press machine according to claim 5, characterized in that: The base (1) is slidably arranged on the bottom plate (25), and the base cylinder (26) drives the base (1) to slide between the loading station and the pressing station. When the base (1) is located at the loading station, the feed seat (21) and the feed guide plate (19) are connected as a whole, and the feed telescopic plate (23) and the feed channel (20) are located at corresponding positions.

7. The circlip press machine according to claim 5, characterized in that: A vibration plate (27) for conveying the clamping spring (2) is arranged on one side of the feed seat (21).

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