Nut tooling press riveting device

Abstract

The utility model discloses a nut frock pressure riveting device, including frame, gas -liquid pressure intensifier, adapter, impact slide, pressure sensor, pressure head, displacement sensor. The frame includes workstation board and fixed arch, and gas -liquid pressure intensifier includes gas -liquid cylinder body and piston rod, and adapter is connected with piston rod coaxially, and impact slide is fixed in adapter, and pressure sensor is fixed in the one side of impact slide away from the adapter, and is arranged with piston rod coaxially, and pressure head is coaxially arranged in the one side of pressure sensor away from impact slide, and displacement sensor includes sensor body and pull rod, and pull rod is fixedly connected with impact slide, and positioning hole is set up in workstation board and is arranged with piston rod coaxially. The utility model discloses can have the monitoring function of pressure, displacement under the condition of lower cost, so that pressure, displacement can be accurately controlled in the working process, and operation data can be traced.

Description

Technical Field

[0001] This utility model relates to the field of riveting machine technology, and in particular to a nut tooling riveting device. Background Technology

[0002] Currently, most common power battery tray nut pressing equipment and energy-absorbing box flange nut pressing equipment are custom-designed special-purpose machines. These machines are expensive, inconvenient for product changeovers, cannot handle multiple types of workpieces requiring pressing, and have low reusability. Furthermore, similar hydraulic equipment exists, but it consumes a lot of energy, produces oil pollution, and lacks pressure and displacement monitoring capabilities. During operation, pressure and displacement cannot be precisely controlled, failing to meet data traceability requirements. Therefore, it is necessary to provide a nut tooling pressing device to overcome these shortcomings. Utility Model Content

[0003] The purpose of this utility model is to provide a nut tooling riveting device, which aims to solve the problem that the pressure and displacement cannot be accurately controlled during the operation of existing nut pressing equipment, so that the pressure and displacement can be accurately controlled during the operation and the operation data can be traced.

[0004] To achieve the above objectives, this utility model provides a nut tooling riveting device, comprising:

[0005] A frame, the frame including a worktable and fixed frames spaced apart above the worktable;

[0006] A gas-liquid booster cylinder, the gas-liquid booster cylinder including a gas-liquid cylinder body fixed on the fixed frame and a piston rod disposed on the gas-liquid cylinder body;

[0007] Matcher, the matcher being coaxially connected to the piston rod;

[0008] An impact slide plate, the impact slide plate being fixed to the side of the matcher away from the piston rod;

[0009] A pressure sensor is fixed to the side of the impact slide plate away from the matching device and is coaxially arranged with the piston rod;

[0010] A pressure head, which is coaxially disposed on the side of the pressure sensor away from the impact slide plate;

[0011] A displacement sensor, comprising a sensor body and a pull rod disposed on the sensor body, the sensor body being fixed to the fixing frame, and the pull rod being parallel to the piston rod and fixedly connected to the impact slide plate;

[0012] A positioning hole is provided on the worktable and is coaxially arranged with the piston rod.

[0013] The positioning hole is used to position the nut fixture placed on the worktable so that the pressure head, driven by the piston rod, performs a riveting action on the nut fixture.

[0014] In a preferred embodiment, the fixing frame is provided with at least one linear bearing, and each linear bearing is provided with a guide rod; each guide rod is parallel to the piston rod, and one end of each guide rod is fixed to the impact plate.

[0015] In a preferred embodiment, a protective plate is vertically arranged on the side of the fixing frame away from the workbench; the portion of the guide rod extending upward from the fixing frame is located within the area enclosed by the protective plate.

[0016] In a preferred embodiment, the edge of the workbench is provided with a protective net with an opening, the opening and the fixing frame being located on opposite sides of the workbench; safety light curtains are provided on the left and right sides of the opening.

[0017] In a preferred embodiment, the workbench is equipped with a two-hand start button box.

[0018] In a preferred embodiment, the pressure head is detachably connected to the pressure sensor and is adapted to the nut fixture placed on the worktable.

[0019] In a preferred embodiment, the nut fixture includes a tray frame; the worktable is provided with a frame nut positioning seat and at least two spaced-apart frame support blocks, the at least two frame support blocks being used to jointly support the tray frame; the frame nut positioning seat is coaxially coupled with the positioning hole; the pressure head, driven by the pneumatic-hydraulic booster cylinder, presses and rivets the frame nut, which is placed above the tray frame and coaxially coupled with the frame nut positioning seat, to a predetermined position on the tray frame.

[0020] In a preferred embodiment, the nut fixture includes an energy-absorbing box; the worktable is provided with an energy-absorbing box positioning seat and an energy-absorbing box support block, the energy-absorbing box support block being used to support the energy-absorbing box; the energy-absorbing box positioning seat is coaxially coupled with the positioning hole; the pressure head, driven by the gas-liquid booster cylinder, presses and rivets the flanged nut, which is placed above the energy-absorbing box and coaxially coupled with the energy-absorbing box positioning seat, to a predetermined position on the energy-absorbing box.

[0021] The nut tooling riveting device provided by this utility model uses an impact slide plate fixed to the piston rod of a pneumatic-hydraulic booster cylinder. When the piston rod moves, it synchronously drives the pull rod of a displacement sensor to move. Therefore, the displacement of the piston rod can be determined by measuring the displacement of the pull rod through the sensor body. Simultaneously, a pressure sensor is coaxially mounted on the piston rod via a matching device. When the workpiece to be riveted is placed between the pressure sensor and the nut tooling for riveting, the pressure sensor can measure the pressure applied by the piston rod to the nut workpiece. This device provides pressure and displacement monitoring functions at a low cost, enabling precise control of pressure and displacement during operation and traceability of work data. Preferably, the corresponding pressure head can be replaced according to different nut tooling, making it compatible with the assembly of various nut toolings, which is beneficial for production changeovers and improving equipment reusability. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A perspective view of the nut tooling riveting device provided by this utility model;

[0024] Figure 2 for Figure 1 The front view of the nut tooling riveting device shown;

[0025] Figure 3 An exploded 3D view of the tray frame nut tooling;

[0026] Figure 4 This is an exploded 3D view of the energy-absorbing box nut fixture.

[0027] The diagram is labeled as follows: 100, Nut tooling riveting device; 10, Machine frame; 11, Workbench; 12, Fixture; 13, Two-hand start button box; 14, Electrical control box; 15, Protective net; 16, Safety light curtain; 17, Protective plate; 20, Pneumatic-hydraulic booster cylinder; 21, Pneumatic-hydraulic cylinder body; 22, Piston rod; 30, Matching device; 40, Impact slide plate; 50, Pressure sensor; 60, Pressure head; 70, Displacement sensor; 71, Sensor body; 72, Pull rod; 81, Linear bearing; 82, Guide rod; 200, Tray frame; 201, Frame nut positioning seat; 202, Frame support block; 203, Frame nut; 300, Energy absorption box; 301, Energy absorption box positioning seat; 302, Energy absorption box support block; 303, Flanged nut. Detailed Implementation

[0028] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described in this specification are merely for explaining the present utility model and are not intended to limit the present utility model.

[0029] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0030] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0031] In an embodiment of this utility model, a nut tooling riveting device 100 is provided for riveting a nut to a predetermined position on a workpiece to be riveted.

[0032] like Figures 1-2 As shown, the nut tooling riveting device 100 includes: a frame 10, a pneumatic-hydraulic booster cylinder 20, a matching device 30, an impact slide plate 40, a pressure sensor 50, a pressure head 60, and a displacement sensor 70.

[0033] The frame 10 includes a worktable 11 and fixed brackets 12 spaced above the worktable 11. The worktable 11 is equipped with a two-hand start button box 13 to ensure safe operation. It should be noted that a conventional electrical control box 14 can be located on the frame 10 and below the worktable 11.

[0034] Furthermore, the edge of the workbench 11 is provided with a protective net 15 with an opening. The protective net 15 can be a steel mesh structure, thereby enclosing a working area. The operator places the workpiece to be riveted into the working area through the opening and removes the riveted nut fixture from the working area. The opening and the fixing frame 12 are located on opposite sides of the workbench 11. To ensure the safety of the operator, safety light curtains 16 are provided on the left and right sides of the opening. Specifically, one side is an infrared light emitter and the other side is an infrared light receiver. When the operator's hand is inserted into the working area through the opening, part of the infrared light is blocked, and the infrared light receiver sends the signal to the electrical control box 14. At this time, the pneumatic-hydraulic booster cylinder 20 cannot be started.

[0035] The pneumatic-hydraulic booster cylinder 20 includes a cylinder body 21 fixed on a mounting bracket 12 and a piston rod 22 disposed on the cylinder body 21. The pneumatic-hydraulic booster cylinder 20 can be a common direct-pressure pneumatic-hydraulic booster cylinder (directly using air pressure to drive hydraulic oil to generate high pressure), a pre-pressure pneumatic-hydraulic booster cylinder (pre-pressurizing the hydraulic oil before boosting), etc. It should be noted that the principle by which the cylinder body 21 drives the piston rod 22 to extend and retract axially can be found in existing technology, and will not be elaborated upon here.

[0036] A positioning hole (not shown in the figure) is formed in the worktable 11 and is coaxially arranged with the piston rod 22. That is, the vertical projection of the piston rod 22 relative to the worktable 11 is aligned with the positioning hole.

[0037] The matching device 30 is cylindrical and coaxially connected to the piston rod 22. The matching device 30 is a device or force transmission adapter that connects to the piston rod 22. Its core function is to act as a mechanical interface between the piston rod 22 and the pressure sensor 50 and pressure head 60, ensuring efficient and stable power transmission while maintaining the system's sealing and coaxiality. It should be noted that the cylindrical component of the matching device 30 can serve as an extension of the piston rod 22, directly contacting the workpiece. Through its structural design (such as threaded, flanged, or tapered connections), the high-pressure force output from the pneumatic-hydraulic booster cylinder 20 is precisely transmitted to the target workpiece, enabling processes such as press fitting, riveting, and forming.

[0038] The impact slide plate 40 is plate-shaped or panel-shaped and is fixed to the side of the matching device 30 away from the piston rod 22. Specifically, the impact slide plate 40 is perpendicular to the piston rod 22 and coaxially arranged with the matching device 30. Therefore, the impact slide plate 40 moves up and down with the piston rod 22.

[0039] Furthermore, the mounting bracket 12 is equipped with at least one linear bearing 81. Each linear bearing 81 is fitted with a guide rod 82. The guide rod 82 moves up and down along the linear bearing 81. Each guide rod 82 is parallel to the piston rod 22, and one end of each guide rod is fixed to the impact plate 40. Therefore, the guide rod 82 moves up and down with the impact plate 40 to guide and limit the up and down movement of the piston rod 22, significantly reducing the swaying of the piston rod 22. In this embodiment, there are two guide rods 82, symmetrically arranged on opposite sides of the piston rod 22, which not only enhances the guiding and limiting effect on the piston rod 22, but also promotes uniform force distribution on the impact plate 40.

[0040] Furthermore, a protective plate 17 is vertically provided on the side of the fixed frame 12 away from the workbench 11. The portion of the guide rod 82 extending upward from the fixed frame 12 is located within the area enclosed by the protective plate 17, thereby preventing the guide rod 82 extending above the linear bearing 81 from causing harm to the human body. A display screen, operating instructions, and other similar items can also be mounted on the protective plate 17.

[0041] In this embodiment of the invention, the pressure sensor 50 is fixed to the side of the impact slide plate 40 away from the matching device 30 and is coaxially arranged with the piston rod 22. When the piston rod 22 applies pressure to the workpiece to be riveted (e.g., a nut), the pressure is first transmitted to the pressure sensor 50 through the matching device 30, and then transmitted to the workpiece through the pressure sensor 50. Therefore, the pressure can be detected by the pressure sensor 50 in real time. It should be noted that the specific structure and implementation principle of the pressure sensor 50 can be referred to the prior art, and will not be described in detail here.

[0042] The pressure head 60 is coaxially positioned on the side of the pressure sensor 50 away from the impact slide plate 40, and is used to rivet the nut or other workpiece to the predetermined position on the workpiece. Furthermore, the pressure head 60 is detachably connected to the pressure sensor 50 and is compatible with the nut fixture placed on the worktable 11. That is, when different nut fixtures need to be riveted are used, the corresponding pressure head 60 can be replaced, making it compatible with different products to be riveted, thereby expanding the applicability of this invention.

[0043] The displacement sensor 70 includes a sensor body 71 and a pull rod 72 disposed on the sensor body 71. The sensor body 71 is fixed to the mounting bracket 12, and the pull rod 72 is parallel to the piston rod 22 and fixedly connected to the impact plate 40. The fixed connection between the pull rod 72 and the impact plate 40 ensures that when the impact plate 40 extends and retracts with the piston rod 22, the pull rod 72 also extends and retracts synchronously with the impact plate 40. Therefore, the displacement of the pull rod 72 is the same as the displacement of the piston rod 22. For example, the sensor body 71 may contain a precision resistor track (such as conductive plastic or a wire-wound resistor). The movement of the pull rod 72 will change the effective length of the resistor, causing a linear change in the resistance value. Therefore, the displacement of the pull rod 72 can be determined by detecting the change in resistance value, and thus the displacement of the piston rod 22 can be determined. This calculation method is a conventional technique in the field of electrical engineering and will not be elaborated further here.

[0044] The positioning hole is used to position the nut fixture placed on the worktable 11 so that the pressure head 60, driven by the piston rod 22, can perform a riveting action on the nut fixture. The positioning hole can also position and assemble positioning seats for different nut fixtures. These positioning seats are adapted to the nuts of the corresponding nut fixtures.

[0045] In one embodiment, such as Figure 3As shown, the nut fixture includes a tray frame 200 of a power battery in the shape of an elongated strip. Correspondingly, the worktable 11 is provided with a frame nut positioning seat 201 and at least two spaced-apart frame support blocks 202. The at least two frame support blocks 202 are used to jointly support the tray frame 200. The frame nut positioning seat 201 is coaxially coupled with a positioning hole to determine the working position of the frame nut positioning seat 201 on the worktable 11. The part of the tray frame 200 to be riveted abuts against the top of the frame nut positioning seat 201, and then a frame nut 203 is placed above the tray frame 200, so that the frame nut 203 and the frame nut positioning seat 201 abut against the upper and lower sides of the part of the tray frame 200 to be riveted, respectively. Driven by the pneumatic-hydraulic booster cylinder 20, the pressure head 60 rivets the frame nut 203, which is placed above the tray frame 200 and coaxially coupled with the frame nut positioning seat 201, to a predetermined position on the tray frame 200.

[0046] Similarly, in another embodiment, such as Figure 4 As shown, the nut fixture includes an energy-absorbing box 300. Correspondingly, the worktable 11 is provided with an energy-absorbing box positioning seat 301 and an energy-absorbing box support block 302. The energy-absorbing box support block 302 is used to support the energy-absorbing box 300. The energy-absorbing box positioning seat 301 is coaxially coupled with the positioning hole. That is, the flanged nut 303 and the energy-absorbing box positioning seat 301 respectively abut against the upper and lower sides of the part of the energy-absorbing box 300 to be riveted. Driven by the pneumatic-hydraulic booster cylinder 20, the pressure head 60 rivets the flanged nut 303, which is placed above the energy-absorbing box 300 and coaxially coupled with the energy-absorbing box positioning seat 301, into the predetermined position of the energy-absorbing box 300.

[0047] It should be noted that, Figure 1 The image simultaneously displays the tray frame nut fixture and the energy-absorbing box nut fixture. In one implementation, both nut fixtures can be placed simultaneously on the worktable 11. By moving the worktable 11, the frame nut 203 and the flange nut 303 can be sequentially positioned directly below the pressure head 60, thereby enabling sequential riveting. In another implementation, the worktable 11 is fixed, and only one type of nut fixture can be placed at a time.

[0048] In summary, the nut tooling riveting device 100 provided by this utility model uses an impact slide plate 40 fixed to the piston rod 22 of the pneumatic-hydraulic booster cylinder 20. When the piston rod 22 moves, it synchronously drives the pull rod 72 of the displacement sensor 70 to move. Therefore, the displacement of the piston rod 22 can be determined by measuring the displacement of the pull rod 72 through the sensor body 71. Simultaneously, a pressure sensor 50 is coaxially mounted on the piston rod 22 via a matching device 30. When the workpiece to be riveted is placed between the pressure sensor 50 and the nut tooling for riveting, the pressure sensor 50 can measure the pressure applied by the piston rod 22 to the nut workpiece. This device provides pressure and displacement monitoring functions at a low cost, enabling precise control of pressure and displacement during operation and traceability of work data. Preferably, the corresponding pressure head 60 can be replaced according to different nut tooling, facilitating the assembly of various nut toolings, which is beneficial for production changeovers and improving equipment reusability.

[0049] This invention is not limited to the description in the specification and embodiments. Therefore, other advantages and modifications can be readily realized by those skilled in the art. Thus, without departing from the spirit and scope of the general concept as defined by the claims and their equivalents, this invention is not limited to the specific details, representative devices and illustrated examples shown and described herein.

Claims

1. A nut tool press-in device, characterized by, include: A frame, the frame including a worktable and fixed frames spaced apart above the worktable; A gas-liquid booster cylinder, the gas-liquid booster cylinder including a gas-liquid cylinder body fixed on the fixed frame and a piston rod disposed on the gas-liquid cylinder body; Matcher, the matcher being coaxially connected to the piston rod; An impact slide plate, the impact slide plate being fixed to the side of the matcher away from the piston rod; A pressure sensor is fixed to the side of the impact slide plate away from the matching device and is coaxially arranged with the piston rod; A pressure head, which is coaxially disposed on the side of the pressure sensor away from the impact slide plate; A displacement sensor, comprising a sensor body and a pull rod disposed on the sensor body, the sensor body being fixed to the fixing frame, and the pull rod being parallel to the piston rod and fixedly connected to the impact slide plate; A positioning hole is provided on the worktable and is coaxially arranged with the piston rod. The positioning hole is used to position the nut fixture placed on the worktable so that the pressure head, driven by the piston rod, performs a riveting action on the nut fixture.

2. The nut tool press device of claim 1, wherein, The fixed frame is provided with at least one linear bearing, and each linear bearing is provided with a guide rod; each guide rod is parallel to the piston rod, and one end of each guide rod is fixed to the impact plate.

3. The nut tool press device of claim 2, wherein, A protective plate is vertically arranged around the edge of the fixed frame away from the workbench; the portion of the guide rod extending upward from the fixed frame is located within the area enclosed by the protective plate.

4. The nut tooling riveting device as described in claim 1, characterized in that, The edge of the workbench is provided with a protective net with an opening, and the opening and the fixing frame are respectively located on opposite sides of the workbench; safety light curtains are provided on the left and right sides of the opening.

5. The nut tooling riveting device as described in claim 1, characterized in that, The workbench is equipped with a two-hand start button box.

6. The nut tooling riveting device as described in claim 5, characterized in that, The pressure head is detachably connected to the pressure sensor and is adapted to the nut fixture placed on the worktable.

7. The nut tooling riveting device as described in claim 1, characterized in that, The nut fixture includes a tray frame; the worktable is provided with a frame nut positioning seat and at least two spaced frame support blocks, the at least two frame support blocks being used to jointly support the tray frame; the frame nut positioning seat is coaxially coupled with the positioning hole; the pressure head, driven by the gas-liquid booster cylinder, presses and rivets the frame nut, which is placed above the tray frame and coaxially coupled with the frame nut positioning seat, to a predetermined position on the tray frame.

8. The nut tooling riveting device as described in claim 1, characterized in that, The nut fixture includes an energy-absorbing box; the worktable is provided with an energy-absorbing box positioning seat and an energy-absorbing box support block, the energy-absorbing box support block being used to support the energy-absorbing box; the energy-absorbing box positioning seat is coaxially coupled with the positioning hole; the pressure head, driven by the gas-liquid booster cylinder, presses and rivets the flanged nut, which is placed above the energy-absorbing box and coaxially coupled with the energy-absorbing box positioning seat, to a predetermined position on the energy-absorbing box.

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