Steel ball pressing and riveting device

Abstract

A steel ball rivet pressing device comprises a base and a ball pressing rod, a plurality of sliding blocks are installed at the bottom of the base, a stepped through hole composed of a thick hole and a thin hole is formed in the ball pressing rod, one end of the base is fixedly connected with a dowel bar, one end of the dowel bar is inserted into the thick hole, a rivet pressing rod with a polygonal section is arranged in the thin hole, and one end of the rivet pressing rod is connected with one end of the ball pressing rod. A plurality of riveting grooves are formed in the inner wall of the thin hole, each edge of the riveting rod is located in each riveting groove, a ball receiving pipe communicated with the thin hole is communicated with the ball pressing rod, a spring is sleeved outside the dowel bar, and the two ends of the spring abut against the ball pressing rod and the base respectively. The device is used for solving the problem of uneven product quality easily caused by manual installation of the steel balls. The installation steps are simplified, the working efficiency is improved, and the steel ball pressing and riveting procedure can meet the production takt of the whole line.

Description

Technical Field

[0001] This utility model relates to a steel ball riveting device. Background Technology

[0002] Some oil passage holes on the car cylinder block need to be sealed with steel balls. The existing method of sealing with steel balls is for workers to use a copper rod to knock the steel ball into the hole, and then use a chisel to evenly rivet multiple notches at the hole opening to prevent the steel ball from coming out. Because the force and position of manual knocking are difficult to control, the degree of steel ball riveting will be different due to the different knocking force and knocking location, which can easily lead to inconsistent product quality, and may even cause leakage in the oil passage hole. Utility Model Content

[0003] The purpose of this invention is to provide a steel ball riveting device to solve the problem that manual installation of steel balls can easily lead to inconsistent product quality.

[0004] To solve the above problems, the technical solution of this utility model is as follows:

[0005] A steel ball riveting device includes a base and a riveting rod. Multiple sliders are installed on the bottom of the base. The riveting rod has a stepped through hole consisting of a coarse hole and a fine hole. A force transmission rod is fixedly connected to one end of the base. One end of the force transmission rod is inserted into the coarse hole. A riveting rod with a polygonal cross-section is provided in the fine hole. One end of the riveting rod is connected to one end of the riveting rod. Multiple riveting grooves are provided on the inner wall of the fine hole. Each edge of the riveting rod is located in the riveting groove. A ball receiving tube connected to the fine hole is connected to the riveting rod. A spring is sleeved on the force transmission rod. The two ends of the spring abut against the riveting rod and the base, respectively.

[0006] A ball plunger is installed on the ball-pressing rod, with the ball head of the ball plunger located inside a narrow hole.

[0007] A detection hole is provided on the ball-pressing rod on one side of the ball-head plunger.

[0008] An adjusting nut is threaded onto the force transmission rod, and the two ends of the spring abut against the pressure rod and the adjusting rod, respectively.

[0009] A groove is provided on the force transmission rod, and a limit pin is provided in the groove. The two ends of the limit pin are fixedly connected to the ball pressing rod.

[0010] A groove is provided around the outside of the ball-pressing rod, and a pin hole is provided in the groove. A limiting pin is installed in the pin hole, and an O-ring is installed in the groove.

[0011] The beneficial effects of this utility model are as follows: the ball pressing rod can automatically feed the steel ball into the hole, and after the steel ball is pressed, the multiple edges of the ball pressing rod can rivet a pit into the hole. Compared with manual installation of steel balls, it can ensure that the riveting force and orientation of each batch of steel balls are consistent, so that the quality standard of riveting of each batch of steel balls is uniform and there will be no leakage of oil passage holes. At the same time, the ball pressing and riveting processes are combined into one, simplifying the installation steps, improving work efficiency, and enabling the steel ball riveting process to meet the production rhythm of the entire line. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings:

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0016] Figure 4 This is a three-dimensional structural diagram of the present invention. The spring and the ball-pressing rod are not shown in the diagram.

[0017] Figure 5 This is a structural diagram of the present invention during implementation.

[0018] In the diagram: 1. Base; 2. Slider; 3. Force transmission rod; 4. Through-beam photoelectric sensor; 5. Riveting groove; 6. Ball receiving tube; 7. Ball pressing rod; 8. O-ring; 9. Spring; 10. Adjusting nut; 11. Limit pin; 12. Riveting rod; 13. Ball plunger; 14. Slide groove; 15. Coarse hole; 16. Fine hole; 17. Steel ball; 18. Spherical groove; 19. Electric cylinder; 20. Cylinder body; 21. Reverse rod; 22. Industrial robot. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1 to 3As shown, a steel ball riveting device includes a base 1 and a ball-pressing rod 7. Multiple sliders 2 are installed at the bottom of the base 1 and are mounted on a guide rail. One end of the base 1 is connected to an electric cylinder 19 for transmission. The ball-pressing rod 7 has a stepped through hole composed of a coarse hole 15 and a fine hole 16. One end of the base 1 is fixedly connected to a force transmission rod 3, and one end of the force transmission rod 3 is inserted into the coarse hole 15. A riveting rod 12 with a polygonal cross-section is provided in the fine hole 16. The riveting rod 12 is made of mold steel and one end of the riveting rod 12 is connected to one end of the ball-pressing rod. Multiple riveting grooves 5 are provided on the inner wall of the fine hole 16. Each edge of the riveting rod 12 is located in the riveting groove 5. A ball receiving tube 6 connected to the fine hole 16 is connected to the ball-pressing rod 7. A spring 9 is sleeved on the force transmission rod 3, and the two ends of the spring 9 abut against the ball-pressing rod 7 and the base 1, respectively.

[0021] The working process of this utility model is as follows:

[0022] S1: As Figure 5 As shown, the industrial robot 22 grips the cylinder 20 between the riveting device and the reverse support mechanism. The reverse support mechanism provides a reverse support force for the riveting device. In addition, the reverse support mechanism is required to be equipped with at least three reverse fixed rods 21. Each reverse fixed rod 21 rests on multiple support surfaces on the upper side of the cylinder, and multiple reverse fixed rods 21 form a reverse top surface. The oil passage hole of the steel ball 17 to be riveted is located in this reverse top surface. In this way, when the riveting device presses against the cylinder, the cylinder will not be deflected.

[0023] S2: Insert the steel ball 17 into the ball receiving tube 6. The steel ball 17 in the ball receiving tube 6 falls into the fine hole 16 of the ball pressing rod 7, thus completing the feeding of the steel ball 17.

[0024] S3: The electric cylinder 19 drives the ball pressing rod 7 to feed, so that the opening of the fine hole 16 of the ball pressing rod 7 abuts against the opening of the oil passage hole in the cylinder body. Then the force transmission rod 3 pushes the riveting rod 12 to feed, the spring 9 is compressed, the steel ball 17 is first pressed into the oil passage hole, and then the apex of each edge of the riveting rod 12 presses out a pit at the opening of the oil passage hole.

[0025] S4: The electric cylinder 19 drives the riveting device to retract, completing the riveting process of the steel ball 17.

[0026] A ball-head plunger 13 is installed on the ball-pressing rod 7, with the ball head of the plunger 13 located inside the narrow hole 16. The steel ball 17 placed into the narrow hole 16 of the ball-pressing rod 7 will be blocked by the ball-head plunger 13 and will not be able to roll out of the narrow hole 16. It can only be pushed out by the pressing rod 12. In this way, the ball receiving pipe 6 can be connected to the steel ball feeder (not shown in the figure) to realize the automatic feeding of the steel ball 17.

[0027] A detection hole is provided on the ball-pressing rod 7 on one side of the ball-end plunger 13. During implementation, the steel ball 17 entering the fine hole 16 of the ball-pressing rod 7 falls onto the detection hole. Through-beam photoelectric sensors 4 are set on both sides of the detection hole. The through-beam photoelectric sensors 4 are connected to the input terminal of the PLC controller. The electric cylinder 19 is extended and retracted and connected to the output terminal of the PLC controller. The through-beam photoelectric sensors detect the steel ball 17 in the fine hole 16 of the ball-pressing rod 7 to determine whether the steel ball 17 is present in the fine hole 16 of the ball-pressing rod 7, and transmit the detection signal to the PLC controller in real time. If the steel ball 17 is present, the PLC controller controls the electric cylinder 19 to operate. If the steel ball 17 is not present, the electric cylinder 19 does not operate. This can effectively prevent the riveting rod 12 from pressing the riveting cylinder body when there is no ball, so as to avoid misoperation.

[0028] An adjusting nut 10 is threaded onto the force transmission rod 3. The two ends of the spring 9 abut against the pressure rod 7 and the adjusting nut, respectively. A groove 14 is formed on the force transmission rod 3, and a limiting pin 11 is provided within the groove 14. The two ends of the limiting pin 11 are fixedly connected to the pressure rod 7. The limiting pin 11 prevents the pressure rod 7 from being pushed off the force transmission rod 3 by the spring 9. The adjusting nut 10 is convenient for adjusting the torque of the spring 9.

[0029] A groove is provided around the outside of the pressure rod 7, and a pin hole is provided in the groove. The limiting pin 11 is assembled in the pin hole, and an O-ring 8 is installed in the groove. The O-ring 8 can prevent the limiting pin 11 from coming out of the pin hole. At the same time, this structure can facilitate the installation and replacement of the limiting pin 11.

[0030] The top surface of the rivet rod 12 is provided with a spherical groove 18. The spherical groove 18 is used to assist in positioning the steel ball 17 for rivet pressing.

[0031] The embodiments described in this specification are merely examples of implementations of the inventive concept. The scope of protection of this utility model should not be considered as limited to the specific forms described in the embodiments. The scope of protection of this utility model also extends to equivalent technical means that can be conceived by those skilled in the art based on the inventive concept.

Claims

1. A steel ball pressing and riveting device, comprising a base (1) and a pressing rod (7), wherein a plurality of sliders (2) are installed at the bottom of the base (1), characterized in that: The ball-pressing rod (7) has a stepped through hole consisting of a coarse hole (15) and a fine hole (16). One end of the base (1) is fixedly connected to the force transmission rod (3). One end of the force transmission rod (3) is inserted into the coarse hole (15). A polygonal cross-section rivet rod (12) is provided in the fine hole (16). One end of the rivet rod (12) is connected to one end of the ball-pressing rod (7). Multiple rivet grooves (5) are provided on the inner wall of the fine hole (16). Each edge of the rivet rod (12) is located in each rivet groove (5). A ball-receiving tube (6) connected to the fine hole (16) is connected to the ball-pressing rod (7). A spring (9) is sleeved on the force transmission rod (3). The two ends of the spring (9) abut against the ball-pressing rod (7) and the base (1) respectively.

2. The steel ball pressing and riveting device according to claim 1, characterized in that: A ball plunger (13) is installed on the ball presser (7), with the ball head of the ball plunger (13) located inside the fine hole (16).

3. The steel ball riveting device according to claim 2, characterized in that: A detection hole is provided on the ball-pressing rod (7) on one side of the ball-head plunger (13).

4. A steel ball pressing and riveting device according to any one of claims 1 to 3, characterized in that: An adjusting nut (10) is threaded onto the force transmission rod (3). The two ends of the spring (9) abut against the ball pressure rod (7) and the adjusting rod, respectively. A sliding groove (14) is provided on the force transmission rod (3). A limiting pin (11) is provided in the sliding groove (14). The two ends of the limiting pin (11) are fixedly connected to the ball pressure rod (7).

5. A steel ball pressing and riveting device according to claim 4, characterized in that: A groove is provided on the outside of the ball-pressing rod (7), and a pin hole is provided in the groove. The limiting pin (11) is installed in the pin hole, and an O-ring (8) is installed in the groove.

6. A steel ball pressing and riveting device according to any one of claims 1 to 3, characterized in that: The top surface of the rivet rod (12) is provided with a spherical groove (18).

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