Riveting tool for blank cap

Abstract

The utility model discloses a blank cap riveting tool, and particularly relates to the technical field of automobile part production and manufacturing, the blank cap riveting tool comprises a bottom plate and a connector fixed at the stamping end of a press, the top of the bottom plate is fixedly connected with a large cylindrical pin and a positioning pin, the top of the bottom plate is provided with a shell, the bottom of the connector is fixedly connected with a pressing head seat, and the pressing head seat is provided with a pressing head. The bottom end of the pressure head base is sleeved with a pressure head, a fixing screw is inserted into one side of the pressure head, and the bottom of the pressure head is fixedly connected with polyurethane elastomer and a plurality of riveting needles. According to the utility model, firstly, the riveting needle corresponds to the interference rod, so that when the pressing head is used for riveting and pressing the blank cap, the process that the blank cap enters the blank cap hole is more stable by pushing the interference rod through the riveting needle, and when the middle part of the blank cap is extruded through the polyurethane elastomer, the movement stability of the blank cap can be further improved when the blank cap is extruded; therefore, interference fit between the blank cap and the blank cap hole is achieved, the pulling-out force of the blank cap is improved, and the device is simple, convenient, high in universality and convenient to clamp.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing technology, and more specifically, to a cap riveting fixture. Background Technology

[0002] In the broad category of automotive parts manufacturing, the engine circulating water pump assembly is an important component. The manufacturing of the engine circulating water pump assembly involves multiple processes, among which cap riveting is a key assembly process. The cap riveting tool is a tool and equipment specifically used to complete the cap riveting process of the housing part in the engine circulating water pump assembly. It exists to ensure the high-quality production of the engine circulating water pump assembly.

[0003] Existing riveting fixtures directly rivet the end caps using a press, which can easily lead to uneven stress on the end caps during the stamping process, resulting in an inability to achieve an interference fit. Consequently, the pull-out strength of the end caps does not meet the required strength, thus affecting the quality of the finished product after riveting. Therefore, a new end cap riveting fixture is proposed. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a cap riveting fixture to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cap riveting fixture, comprising a base plate and a connector fixed to the stamping end of a press. A large cylindrical pin and a positioning pin are fixedly connected to the top of the base plate. A housing is provided on the top of the base plate. A pressure head seat is fixedly connected to the bottom of the connector. A pressure head is fitted onto the bottom end of the pressure head seat. A fixing screw is inserted into one side of the pressure head. The connector facilitates the connection between the pressure head seat and the stamping end of the press, allowing for easy control of the pressure head seat's up-and-down movement to achieve the riveting function. The large cylindrical pin facilitates the positioning of the housing, and the positioning pin limits the angle of the housing, thereby determining the placement position of the housing. The pressure head can be removed from the bottom end of the pressure head seat by rotating the fixing screw, and the pressure head seat can be fixed by the fixing screw, facilitating installation and disassembly. Different pressure heads can be replaced according to different products, improving the flexibility of use.

[0006] The bottom of the pressure head is fixedly connected with urethane adhesive and multiple rivets. The top of the housing has a cap hole, and a cap is set in the center of the cap hole. An interference rod is fixed through the perimeter of the cap. The interference rod facilitates the placement of the cap on the top of the cap hole for positioning and facilitates riveting to make the cap and cap hole interference fit. The interference rod also increases the pull-out force of the cap. By pressing the rivets against the interference rod, the cap is pressed into the cap hole. With the help of urethane adhesive, the cap and cap hole can be interference fit, which is convenient for riveting.

[0007] Preferably, the large cylindrical pin passes through the middle of the through hole on one side of the housing, and the positioning pin is set on one side of the housing. Through the cooperation of the large cylindrical pin and the positioning pin, the housing can be limited to the top of the base plate and the placement position of the housing can be positioned, which facilitates the riveting of the end cap into the end cap hole for interference fit.

[0008] Preferably, the pressure head is positioned directly above the end cap, and one end of the fixing screw is in contact with the wall of the pressure head seat. The pressure head facilitates the riveting of the end cap, and the fixing screw facilitates the disassembly and assembly of the pressure head and the pressure head seat.

[0009] Preferably, the cap is adapted to the cap hole, the cap coincides with the central axis of the urethane adhesive, the cap is riveted into the inside of the cap hole to seal the inside of the cap hole, and the cap and cap hole can be interference-fitted by riveting the cap with urethane adhesive.

[0010] Preferably, the rivet is positioned directly above the interference rod, with each rivet corresponding to one of the interference rods. As the rivet moves downward with the pressure head, the interference rod is pressed to move the end cap into the end cap hole, and the interference rod portion at the bottom of the end cap fits against the wall of the end cap hole, achieving an interference fit and improving the pull-out force of the end cap. This design is simple, convenient, versatile, and easy to clamp.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] 1. This utility model firstly uses the rivet pin and the interference rod to make the process of the end cap entering the end cap hole more stable when the pressure head is riveting the end cap. The compression of the middle of the end cap by the urethane rubber can further improve the stability of the end cap movement when the end cap is compressed. Thus, the end cap and the end cap hole achieve an interference fit, improve the pull-out force of the end cap, and is simple, convenient, versatile and easy to clamp.

[0013] 2. This utility model also uses a large cylindrical pin to facilitate the positioning of the housing and uses a positioning pin to limit the angle of the housing, thereby determining the placement position of the housing. By rotating the fixing screw, the pressure head can be removed from the bottom of the pressure head seat, and by pressing the pressure head seat with the fixing screw, the pressure head can be easily fixed to the bottom of the pressure head seat, which is convenient for installation and disassembly. This allows for the replacement of different pressure heads according to different products at the bottom, improving the flexibility of use.

[0014] In summary, through the interaction of the above-mentioned multiple functions, an interference fit can be achieved between the end cap and the end cap hole during the riveting process, which improves the pull-out force of the end cap, facilitates the positioning of the housing, and makes the riveting process easier. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the structure of the base plate of this utility model.

[0017] Figure 3 This is a schematic diagram of the connection structure between the base plate and the shell of this utility model.

[0018] Figure 4 This is a schematic diagram of the connection structure between the pressure head seat and the pressure head of this utility model.

[0019] The attached diagram is labeled as follows: 1. Base plate; 2. Large cylindrical pin; 3. Positioning pin; 4. Housing; 5. Pressure head seat; 6. Connector; 7. Pressure head; 8. Fixing screw; 9. Polyurethane adhesive; 10. Rivet pin; 11. End cap hole; 12. End cap; 13. Interference rod. Detailed Implementation

[0020] 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.

[0021] As attached Figure 1-4The illustrated sealing cap riveting fixture includes a base plate 1 and a connector 6 fixed to the stamping end of a press. The base plate 1 facilitates the placement of the housing 4, and the connector 6 facilitates the connection of the press head seat 5 to the stamping end of the press, allowing for easy control of the press head seat 5's vertical movement to achieve the riveting function. A large cylindrical pin 2 and a positioning pin 3 are fixedly connected to the top of the base plate 1. The large cylindrical pin 2 facilitates the positioning of the housing 4, and the positioning pin 3 limits the angle of the housing 4, thereby determining the placement position of the housing 4. The housing 4 is mounted on the top of the base plate 1, and the press head seat 5 is fixedly connected to the bottom of the connector 6. A press head 7 is fitted onto the bottom end of the press head seat 5, and a fixing screw 8 is inserted into one side of the press head 7. By rotating the fixing screw 8, the press head 7 can be removed from the bottom end of the press head seat 5, and by pressing the press head seat 5 with the fixing screw 8, the press head 7 can be fixed to the bottom end of the press head seat 5, facilitating installation and disassembly. This allows for the replacement of different press heads 7 according to different products, improving the flexibility of use.

[0022] The bottom of the pressure head 7 is fixedly connected with urethane adhesive 9 and multiple rivet pins 10. The top of the housing 4 is provided with a cap hole 11. A cap 12 is provided in the middle of the cap hole 11. An interference rod 13 is fixed through the perimeter of the cap 12. The interference rod 13 facilitates the placement of the cap 12 on the top of the cap hole 11 for positioning and facilitates riveting to make the cap 12 and the cap hole 11 interference fit. The interference rod 13 also makes the pull-out force of the cap 12 greater. By pressing the interference rod 13 with the rivet pins 10, the cap 12 is pressed into the interior of the cap hole 11. With the cooperation of urethane adhesive 9, the cap 12 and the cap hole 11 can be interference fit, which is convenient for riveting.

[0023] As attached Figure 1 , 4 As shown, the large cylindrical pin 2 penetrates the middle of the through hole on one side of the housing 4, the positioning pin 3 is set on one side of the housing 4, the pressure head 7 is set directly above the end cap 12, and one end of the fixing screw 8 is attached to the wall of the pressure head seat 5. Through the cooperation of the large cylindrical pin 2 and the positioning pin 3, the housing 4 can be limited to the top of the base plate 1 and the placement position of the housing 4 can be positioned, making it convenient to rivet the end cap 12 into the end cap hole 11 for interference fit. The pressure head 7 facilitates the riveting of the end cap 12, and the fixing screw 8 facilitates the disassembly and assembly of the pressure head 7 and the pressure head seat 5.

[0024] As attached Figure 3 , 4As shown, the cap 12 is adapted to the cap hole 11, and the cap 12 coincides with the central axis of the urethane 9. The rivet 10 is set directly above the interference rod 13, and the rivet 10 corresponds one-to-one with the interference rod 13. The cap 12 is riveted into the interior of the cap hole 11 to seal the interior of the cap hole 11. The riveting of the cap 12 by the urethane 9 can improve the stability of the cap 12 entering the interior of the cap hole 11, realizing the interference fit between the cap 12 and the cap hole 11. As the rivet 10 moves downward with the pressure head 7, the riveting of the interference rod 13 can move the cap 12 into the interior of the cap hole 11, making the force on the cap 12 more even and improving the stability of the cap's movement. This allows the interference rod 13 at the bottom of the cap 12 to fit against the wall of the cap hole 11, realizing the interference fit and improving the pull-out force of the cap 12. It is simple, convenient, versatile, and easy to clamp.

[0025] The working principle of this utility model is as follows: When in use, place the housing 4 on the top of the base plate 1, so that the large cylindrical pin 2 passes through the through hole of the housing 4, then move the housing 4 so that one side wall of the housing 4 fits against the wall of the positioning pin 3, and then install the pressure head seat 5 on the press through the connector 6.

[0026] Then, place the end cap 12 on top of the end cap hole 11, and move the pressure head seat 5 and the pressure head 7 so that the rivet 10 corresponds one-to-one with the interference rod 13. Start the press and control the pressure head 7 to drive the rivet 10 and the urethane 9 to rivet the end cap 12, so that the end cap 12 is pressed into the interior of the end cap hole 11 to achieve an interference fit.

[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cap riveting fixture, comprising a base plate (1) and a connector (6) fixed to the stamping end of a press, characterized in that: The top of the base plate (1) is fixedly connected with a large cylindrical pin (2) and a positioning pin (3). The top of the base plate (1) is provided with a housing (4). The bottom of the connector (6) is fixedly connected with a pressure head seat (5). The bottom end of the pressure head seat (5) is fitted with a pressure head (7). A fixing screw (8) is inserted into one side of the pressure head (7). The bottom of the pressure head (7) is fixedly connected with urethane (9) and multiple rivets (10). The top of the housing (4) is provided with a cap hole (11). A cap (12) is provided in the middle of the cap hole (11). An interference rod (13) is fixed through the cap (12) around its perimeter.

2. The sealing cap riveting fixture according to claim 1, characterized in that: The large cylindrical pin (2) penetrates the middle of the through hole on one side of the housing (4), and the positioning pin (3) is located on one side of the housing (4).

3. The sealing cap riveting fixture according to claim 1, characterized in that: The pressure head (7) is positioned directly above the cap (12), and one end of the fixing screw (8) is in contact with the wall of the pressure head seat (5).

4. The sealing cap riveting fixture according to claim 1, characterized in that: The cap (12) is adapted to the cap hole (11), and the cap (12) coincides with the central axis of the urethane (9).

5. The sealing cap riveting fixture according to claim 1, characterized in that: The rivet (10) is positioned directly above the interference rod (13), and the rivet (10) corresponds one-to-one with the interference rod (13).

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