Penetrating rod riveting device

Abstract

The utility model relates to a through rod riveting device, and belongs to the field of automatic assembly lines of automobile parts. The connection positioning seat is installed in a spigot of the upper positioning plate and connected through a screw, the force sensor is installed on the upper positioning plate through a screw, the connection column is fixedly connected with the upper positioning plate, the positioning sleeve is fixedly connected with the lower positioning plate through a screw, the guide shaft is installed on the lower positioning plate through a screw, and the punch ejector rod is installed in a positioning hole of the positioning sleeve. The lower positioning plate is fixedly connected with the connecting column 4 through a screw, the punch is installed on the punch ejector rod, the material returning springs are installed on the guide shafts respectively, and the material returning pressing heads are installed on the guide shafts. The riveting device has the advantages that the structure is novel, the punch is an independent quick-change mechanism, the punch can be quickly replaced after being damaged, through rods with different diameters can be riveted in a quick-change mode, the pre-pressing function before riveting and the material returning function after riveting are achieved, and the riveting consistency of products is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of automatic assembly lines for automobile parts, in particular to a through-rod riveting device used on a vacuum booster assembly line. Background Art

[0002] The vacuum booster is a brake servo device in the braking systems of light vehicles, sedans, minivans, and electric vehicles, and is a key component in automotive braking systems. Its operating principle is to utilize the vacuum generated by the mechanical vacuum pumps installed in gasoline and diesel engines, as well as the electric vacuum pumps used in pure electric vehicles, to provide the vacuum booster with the vacuum. When the driver steps on the brake pedal, the thrust generated by the differential pressure between the two working chambers within the vacuum booster amplifies the brake pedal force according to the designed ratio, pushing the brake master cylinder piston. This compresses the brake fluid within the master cylinder to generate hydraulic pressure, which is then delivered to the wheel brakes, causing the brake shoes to contact the wheel hubs, thereby generating frictional resistance to control vehicle deceleration or braking. The advantage of the vacuum booster is that it reduces the driver's workload.

[0003] Vacuum boosters are divided into two types according to their structure: through-type and non-through-type. The through-type structure is that the front and rear shells of the booster are connected by two through-rods. The connection methods of the through-rod and the booster shell are floating and riveted. The riveting method is to connect the through-rod with the front shell or rear shell of the booster by straight-line pressing. The parts are then assembled through the two through-rods to form a booster assembly. Figure 6 The through-rod is riveted to the rear housing. After the through-rod and the housing are riveted together, the components must meet the process requirements of leak-proof sealing and the fixed housing applying a certain torque to the through-rod without rotation. To meet these process requirements, a reliable riveting device is required. Summary of the Invention

[0004] The utility model provides a through-rod riveting device, which is used for riveting the through-rods of vacuum booster products.

[0005] The technical solution adopted by the utility model is to include a connecting positioning seat, an upper positioning plate, a force sensor, a connecting column, a lower positioning plate, a guide shaft, a material stripping spring, a material stripping pressure head, a positioning sleeve, a punch push rod and a punch, wherein the connecting positioning seat is installed in the stop of the upper positioning plate and connected with screws, the force sensor is installed on the upper positioning plate by screws, the connecting column is fixedly connected to the upper positioning plate, the positioning sleeve is fixedly connected to the lower positioning plate by screws, the guide shaft is installed on the lower positioning plate by screws, the punch push rod is installed in the positioning hole of the positioning sleeve, the lower positioning plate is fixedly connected to the connecting column by screws, the punch is installed on the punch push rod, the material stripping springs are respectively installed on the guide shafts, and the material stripping pressure head is installed on the guide shaft.

[0006] The number of the connecting columns is 4.

[0007] The connecting column is fixedly connected to the upper positioning plate using screws.

[0008] The number of the guide shafts is 8.

[0009] The number of the material removal springs is 8.

[0010] The stripping press head is mounted on the guide shaft by respectively using screws to pass through gaskets and tighten them on the guide shaft, thereby fixing the stripping press head on the guide shaft.

[0011] The punch is mounted on a punch ejector rod and is limited by two ejector screws.

[0012] The advantages of the utility model are novel structure. The punch is an independent quick-change mechanism. The punch can be quickly replaced after being damaged. Through rods of different diameters can be riveted by quick change, realizing the functions of pre-pressing before riveting and material withdrawal after riveting. The utility model is used in conjunction with a servo press or an oil cylinder. The pressure provided by the servo press or the oil cylinder is used to compress the straight grain of the through rod, thereby riveting the through rod and the shell together, ensuring the consistency of product riveting. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 yes Figure 1 AA section view;

[0015] Figure 3 It is a three-dimensional diagram of the utility model;

[0016] Figure 4 This is a state diagram after the guide rod and housing to be riveted are placed on the positioning fixture at the loading station;

[0017] Figure 5 This is a state diagram of the through rod and the shell being riveted together according to the dimensions required by the product drawing;

[0018] Figure 6 It is a structural diagram of an existing through-type booster. DETAILED DESCRIPTION

[0019] like Figure 1 、 2As shown in Figure 3, it includes a connecting positioning seat 1, an upper positioning plate 2, a force sensor 3, a connecting column 4, a lower positioning plate 5, a guide shaft 6, a material stripping spring 7, a material stripping pressure head 8, a positioning sleeve 9, a punch push rod 10 and a punch 11, wherein the connecting positioning seat 1 is installed in the stop of the upper positioning plate 2 and is connected with screws, the force sensor 3 is installed on the upper positioning plate 2 by screws, the connecting column 4 is fixedly connected to the upper positioning plate 2, the positioning sleeve 9 is fixedly connected to the lower positioning plate 5 by screws, the guide shaft 6 is installed on the lower positioning plate 5 by screws, the punch push rod 10 is installed in the positioning hole of the positioning sleeve 9, the lower positioning plate 5 is fixedly connected to the connecting column 4 by screws, the punch 11 is installed on the punch push rod 10, the material stripping spring 7 is respectively installed on the guide shaft 6, and the material stripping pressure head 8 is installed on the guide shaft 6.

[0020] The number of the connecting columns 4 is four.

[0021] like Figure 1 As shown, the connecting column 4 is fixedly connected to the upper positioning plate 2 using screws 13.

[0022] The number of the guide shafts 6 is 8.

[0023] The number of the material-removing springs 7 is 8.

[0024] The stripping press head 8 is mounted on the guide shaft 6 by respectively using 8 screws to pass through the gasket 12 and tighten them on the guide shaft 6 , thereby fixing the stripping press head 8 on the guide shaft 6 .

[0025] The punch 11 is mounted on the punch push rod 10 and is limited by two push screws 14 .

[0026] How it works

[0027] The through-rod riveting device is installed on the through-rod riveting equipment, and the positioning seat 1 is connected and fixed with the equipment's downward push rod through the top screw. The guide rod and the shell to be riveted are placed on the positioning fixture manually at the loading station. The state after placement is as follows Figure 4 As shown, the riveting mechanism is driven downward by a servo press or oil cylinder. First, the stripping pressure head 8 of the riveting device will contact the shell. Under the thrust generated by the compression of the stripping spring 7, the positioning end surface of the shell and the guide rod are ensured to be completely fitted. The punch 11 of the riveting device is further pressed down to contact the straight-grained end surface of the through-rod. Under the action of pressure, the straight grain is continuously compressed and turned outward. Finally, the through-rod and the shell are riveted together according to the size required by the product drawing. Figure 5 As shown, after the riveting pressure meets the requirement, the equipment is reset, and the stripping press head 8 pushes the shell to withdraw the guide rod from the punch 11, and the riveted parts are manually taken out. The above reciprocating action can rivet two through rods for each shell.

Claims

1. A through-rod riveting device, characterized in that: It includes a connecting positioning seat, an upper positioning plate, a force sensor, a connecting column, a lower positioning plate, a guide shaft, a material stripping spring, a material stripping pressure head, a positioning sleeve, a punch push rod and a punch, wherein the connecting positioning seat is installed in the stop of the upper positioning plate and connected with screws, the force sensor is installed on the upper positioning plate through screws, the connecting column is fixedly connected to the upper positioning plate, the positioning sleeve is fixedly connected to the lower positioning plate through screws, the guide shaft is installed on the lower positioning plate through screws, the punch push rod is installed in the positioning hole of the positioning sleeve, the lower positioning plate is fixedly connected to the connecting column through screws, the punch is installed on the punch push rod, the material stripping springs are respectively installed on the guide shafts, and the material stripping pressure head is installed on the guide shaft.

2. A through-rod riveting device according to claim 1, characterized in that: The number of the connecting columns is 4.

3. A through-rod riveting device according to claim 2, characterized in that: The connecting column is fixedly connected to the upper positioning plate using screws.

4. The through-rod riveting device according to claim 1, characterized in that: The number of the guide shafts is 8.

5. The through-rod riveting device according to claim 1, characterized in that: The number of the material removal springs is 8.

6. The through-rod riveting device according to claim 1, characterized in that: The stripping press head is mounted on the guide shaft by respectively using screws to pass through gaskets and tighten them on the guide shaft, thereby fixing the stripping press head on the guide shaft.

7. The through-rod riveting device according to claim 1, characterized in that: The punch is mounted on a punch ejector rod and is limited by two ejector screws.

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