Tire inflation safety cage assembly tooling

Abstract

This invention discloses a tire-inflatable safety cage assembly fixture, comprising a rectangular base, a front positioning frame, a left positioning post assembly, a right positioning post, a left movable pressure plate assembly, a right fixed pressure plate assembly, a support angle iron assembly, and a left connecting plate. The rectangular base has a base plate positioning area on its top surface and an adjustable fixing block at its rear end. The inner side of the front positioning frame has a positioning groove matching the front frame of the safety cage. The left positioning post assembly includes two positioning posts with horizontal cylinders. The front end of the right positioning post has a connecting block for positioning the door latch. The left movable pressure plate assembly is driven by a cylinder, and the right fixed pressure plate assembly is fixed to the inner side of the right positioning post. The support angle iron assembly is distributed at the top of the front positioning frame, the left positioning post assembly, and the middle of the right positioning post. Through this structure, the fixture achieves precise positioning and assembly of the various components of the safety cage, improving assembly accuracy and efficiency, enhancing versatility, and effectively ensuring the product quality and stability of the safety cage.

Description

Technical Field

[0001] This invention relates to the field of mechanical manufacturing tooling technology, and in particular to a tire inflation safety cage splicing tooling. Background Technology

[0002] Tire inflation safety cages are indispensable safety devices in tire production and testing processes. Their structure typically consists of multiple metal frame components assembled together. In fields such as automobile manufacturing and tire testing, the quality of the safety cage assembly directly affects equipment operational safety and production efficiency.

[0003] Currently, the assembly of safety cages in the industry mainly relies on manual operation, which has the following prominent problems:

[0004] Insufficient positioning accuracy: When manually aligning components, visual errors and fatigue can easily affect the overall structural strength, resulting in uneven splicing gaps.

[0005] Inefficient: A single safety cage requires the assembly of 10-15 parts, and it takes a skilled worker 15-20 minutes to complete the assembly of a set, which cannot meet the needs of large-scale production.

[0006] High labor intensity: The parts typically weigh 5-10kg, and manual handling requires a lot of physical strength, which can easily lead to occupational injuries such as lumbar muscle strain.

[0007] High safety risks: There is a risk of parts rebounding when manually hammering and fixing. Statistics from a tire factory in 2022 showed that the accident rate in the splicing process accounted for 23% of the total accidents in the workshop.

[0008] Poor tooling adaptability: Traditional tooling is mostly simple fixtures, requiring frequent replacement of parts to adapt to different specifications of safety cages, with changeover time accounting for more than 30% of the production cycle.

[0009] In the existing technology, some companies have tried to use general mechanical fixtures to assist in splicing, but there are the following limitations: the fixture structure is complex and requires professional technicians to operate; there is a lack of automated pushing mechanism, and the position of the parts still needs to be adjusted manually; no special positioning benchmark has been designed for the structural characteristics of the safety cage, such as "multiple right-angle bends and multiple hole alignments", resulting in a splicing qualification rate of only 85%-90%.

[0010] In summary, developing a specialized splicing tool that is compact, precisely positioned, and can be quickly changed is of great significance for improving the production quality and efficiency of safety cages. Summary of the Invention

[0011] In order to effectively solve the problems in the background art, the present invention proposes a tire inflation safety cage splicing tool.

[0012] The specific technical solution is as follows:

[0013] A tire inflation safety cage assembly fixture, characterized in that it includes a rectangular base, a front positioning frame, a left positioning column group, a right positioning column, a left movable pressure plate group, a right fixed pressure plate group, a support angle iron group, and a left connecting plate;

[0014] The top surface of the rectangular base is provided with a base plate positioning area, and an adjustable fixing block is provided at the rear end of the base plate positioning area;

[0015] The front positioning frame is vertically fixed to the front end of the base, and its inner side is provided with a positioning groove that matches the front frame of the safety cage.

[0016] The left positioning column group includes two symmetrically arranged vertical positioning columns, and each positioning column is spaced two horizontal cylinders along the height direction;

[0017] The right-side positioning post is a single vertical positioning post, and its front end is equipped with a connecting block for positioning the door latch.

[0018] The left movable pressure plate assembly includes four movable pressure plates corresponding to the left positioning column assembly. Each movable pressure plate is driven to move horizontally by a cylinder piston rod.

[0019] The right-side fixed pressure plate assembly includes four fixed pressure plates fixed to the inside of the right-side positioning column;

[0020] The support angle iron assembly includes three sets of support angle irons located at the top of the front positioning frame, the middle of the left positioning post assembly, and the middle of the right positioning post assembly;

[0021] The left connecting plate connects the middle of the two left positioning columns.

[0022] Preferably, the left movable pressure plate group and the right fixed pressure plate group are each provided with a U-shaped tube fixing groove at corresponding positions. The width of the fixing groove matches the diameter of the U-shaped tube of the safety cage, and the groove depth is 1 / 3 to 1 / 2 of the tube diameter.

[0023] Preferably, the distance between the two positioning posts of the left positioning post group is 1.05 to 1.1 times the width of the safety cage, and the two cylinders on each positioning post drive the upper and lower movable pressure plates respectively.

[0024] Preferably, the three sets of supporting angle irons of the supporting angle iron group are located at the top front end of the front positioning frame, the inner side of the middle of the left positioning column group, and the inner side of the middle of the right positioning column, respectively. The top surface height of each set of supporting angle irons is the same, forming a horizontal supporting surface for the connecting beam.

[0025] Preferably, the adjustable fixed stop includes a fixed base, an adjusting screw, and a positioning plate;

[0026] The mounting bracket is fixed to the rear end of the base with bolts;

[0027] The adjusting screw is threaded to the fixed base and perpendicular to the base;

[0028] The positioning plate is fixed to the front end of the adjusting screw, and its front end face is in contact with the rear end face of the safety cage bottom plate.

[0029] Preferably, the connecting block of the right positioning column has an L-shaped structure, with its vertical surface fixed to the positioning column and its horizontal surface having a positioning hole that mates with the safety cage pin.

[0030] Preferably, the thickness of the pressure plates of the left movable pressure plate group and the right fixed pressure plate group is 8-12mm, and the length of the pressure plates covers the entire vertical height of the safety cage U-shaped tube.

[0031] Compared with existing technologies, the advantages of this invention are: each component of the tooling has a clearly defined positioning and fixing method, forming a standardized assembly process. Operators only need to place each component of the safety cage in its corresponding position according to the prescribed steps to complete the assembly preparation work, reducing reliance on operator skills and operation time, and improving overall production efficiency. For example, the connecting block has an L-shaped structure, with its vertical surface fixed to the positioning post and its horizontal surface having positioning holes that mate with the safety cage's latch. This standardized structural design makes the installation of the door latch more convenient and faster, requiring no additional adjustments or calibrations, effectively improving assembly efficiency. Attached Figure Description

[0032] Figure 1 This is a perspective view of the present invention;

[0033] Figure 2 This is a perspective view of the invention from another direction;

[0034] Figure 3 This is a perspective view of the safety cage in this invention;

[0035] Figure 4 This is a diagram showing the usage state of the present invention. Detailed Implementation

[0036] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, rotated 90 degrees, or in other orientations, and the spatial relative descriptions used herein will be interpreted accordingly.

[0037] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings and preferred embodiments. Figure 1 As shown, this invention proposes a tire inflation safety cage assembly fixture, including a base 1, a front positioning frame 2, a left positioning post 3, a right positioning post 4, a left movable pressure plate 5, a right fixed pressure plate 6, a left connecting plate 7, cylinders 8, and supporting angle iron 9. The front positioning frame is fixed to one side of the base. There are two left positioning posts, which are respectively fixed to the left sides of the base. Two cylinders are fixed on each left positioning post. The piston rods of the two cylinders on each left positioning post are fixed to the left movable pressure plate. There are two left movable pressure plates, one on top of the other. The cylinder can drive the left movable pressure plate to move, pressing the U-shaped tube 101 of the safety cage to be assembled from the side. Correspondingly, two right fixed pressure plates are fixed on the right positioning column on the side of the left movable pressure plate. The right fixed pressure plate remains stationary. The left movable pressure plate and the right movable pressure plate are respectively provided with fixing grooves 10 to limit the U-shaped tube 101 of the safety cage. Furthermore, in order to support and position the connecting beam 102 on the safety cage, support angle irons are provided at the corresponding positions of the left connecting plate, the right positioning column and the front positioning frame.

[0038] The specific usage method is as follows:

[0039] Place the rectangular base stably on the operating site, ensuring its top surface is level. Use a level to measure and adjust, controlling the base's levelness error within ±0.5°. Mark the base plate positioning area on the top surface of the base, ensuring the positioning area dimensions match the safety cage base plate. Install the adjustable fixing block 11: fix the fixing seat to the rear end of the base with bolts, thread the adjusting screw to the fixing seat and perpendicular to the base, fix the positioning plate to the front end of the adjusting screw, and adjust the position of the positioning plate by rotating the adjusting screw so that its front end face is in close contact with the rear end face of the safety cage base plate. Vertically fix the front positioning frame to the front end of the base, ensuring its inner positioning groove precisely matches the front frame of the safety cage, with a dimensional error controlled within ±0.2mm. Install the left positioning column assembly, symmetrically placing two vertical positioning columns on the left side of the base, ensuring the positioning column verticality error is within ±0.3°. Install two horizontal cylinders at intervals along the height direction for each positioning column, ensuring the piston rod extension direction is consistent with the moving direction of the movable pressure plate. Install the right-side positioning column and fix an L-shaped connecting block 12 to its front end. The horizontal surface of the connecting block is machined with positioning holes that mate with the safety cage pins, with dimensional errors controlled within ±0.1mm. Install the left-side movable pressure plate assembly, ensuring each movable pressure plate moves smoothly horizontally under the drive of the cylinder piston rod. Fix the right-side fixed pressure plate assembly, ensuring its U-shaped tube fixing groove corresponds to the left-side movable pressure plate assembly, the groove width matches the U-shaped tube diameter, and the groove depth is 1 / 3 to 1 / 2 of the tube diameter, with dimensional errors controlled within ±0.1mm. Install the support angle iron assembly, ensuring the top surfaces of the three sets of support angle irons are at the same height, forming a horizontal support surface for the connecting beam, with height errors controlled within ±0.1mm. Connect the left-side connecting plate to enhance the overall stability of the left-side positioning column assembly.

[0040] splicing operation process

[0041] Place the safety cage bottom plate in the positioning area of ​​the base plate, with the rear end face in contact with the adjustable fixed stop positioning plate. Fine-tune the positioning plate to ensure the bottom plate is in an accurate position, with the error controlled within ±0.5mm.

[0042] Place the front frame of the safety cage into the positioning groove of the front positioning frame, ensuring a tight fit, with the positioning error controlled within ±0.2mm.

[0043] Place the connecting beam on the horizontal support surface of the supporting angle iron assembly, ensuring that the levelness error is controlled within ±0.2°.

[0044] Insert the U-shaped tube vertically into the U-shaped tube fixing groove of the left movable pressure plate group and the right fixed pressure plate group, ensuring that the center deviation is controlled within ±0.3mm.

[0045] The starter cylinder drives the left movable pressure plate assembly to move horizontally, pressing the U-shaped tube against the right fixed pressure plate assembly. The distance between the two positioning posts of the left positioning post assembly is 1.05 to 1.1 times the width of the safety cage. The two cylinders on each positioning post drive the upper and lower movable pressure plates respectively to ensure that the U-shaped tube is firmly fixed.

[0046] Insert the safety cage door latch into the positioning hole of the right-side positioning column connecting block to ensure that the positioning error is controlled within ±0.1mm.

[0047] After each component is positioned and fixed, it is welded. After welding is completed, the cylinder is reset and the assembled safety cage is taken out.

[0048] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A tooling for assembling a tire-inflatable safety cage, characterized in that, include: A rectangular base (1) has a base plate positioning area on its top surface, and an adjustable fixing block (11) is provided at the rear end of the base plate positioning area; The front positioning frame (2) is vertically fixed to the front end of the base, and its inner side is provided with a positioning groove that matches the front frame of the safety cage. The left positioning column group (3) includes two vertical positioning columns arranged symmetrically, and each positioning column is provided with two horizontal cylinders (8) spaced apart along the height direction; The right-side positioning column (4) is a single vertical positioning column, and its front end is provided with a connecting block (12) for positioning the door latch of the safety cage. The left movable pressure plate group (5) includes four movable pressure plates corresponding to the left positioning column group. The two horizontal cylinders drive the upper two movable pressure plates and the lower two movable pressure plates respectively. The right-side fixed pressure plate assembly (6) includes four fixed pressure plates fixed to the inside of the right-side positioning column; The support angle iron assembly (9) includes three sets of support angle irons located at the top of the front positioning frame, the middle of the left positioning column assembly, and the middle of the right positioning column. The movable pressure plate in the left movable pressure plate group (5) and the fixed pressure plate in the right fixed pressure plate group (6) are provided with U-shaped tube fixing grooves (10) at corresponding positions. The groove width of the fixing groove (10) matches the pipe diameter of the safety cage U-shaped tube (101), and the groove depth of the U-shaped tube fixing groove is 1 / 3-1 / 2 of the pipe diameter. The distance between the two positioning posts of the left positioning post group (3) is 1.05-1.1 times the width of the safety cage; The adjustable fixed stop (11) includes: The mounting bracket is fixed to the rear end of the base with bolts; The adjusting screw is threaded to the fixed base and perpendicular to the base. The positioning plate is fixed to the front end of the adjusting screw, and its front end face is in contact with the rear end face of the safety cage bottom plate (103); The top surfaces of each set of supporting angle irons are at the same height, forming the horizontal support surface of the connecting beam (102) on the safety cage.

2. The tooling according to claim 1, characterized in that: The connecting block (12) of the right positioning column (4) has an L-shaped structure. The vertical surface of the connecting block is fixed to the right positioning column, and the horizontal surface of the connecting block is provided with a positioning hole that cooperates with the safety cage pin.

3. The tooling according to claim 1, characterized in that: The thickness of the pressure plates of the left movable pressure plate group (5) and the right fixed pressure plate group (6) is 8-12mm, and the length of the pressure plates covers the entire vertical height of the safety cage U-shaped tube (101).

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