A device for assembling air spring damper buffer blocks

Abstract

This utility model provides a device for assembling a buffer block of an air spring vibration damper, including an air chamber fixing seat, a buffer block guide sleeve, and a buffer block pressure head. The upper surface of the air chamber fixing seat has a mounting groove that mates with the bottom of the air chamber. The buffer block guide sleeve is cylindrical and includes an insertion port and an outlet port. The inner diameter of the buffer block guide sleeve gradually decreases from the insertion port to the outlet port. The outlet port has an outer chamfer that mates with the inner chamfer of the air chamber hook head, and the inner diameter of the outlet port is smaller than the inner diameter of the air chamber hook head. The lower end of the buffer block pressure head is provided with a positioning guide spindle. This device is simple to operate, quick to install, improves assembly efficiency, provides axial pressing, ensures uniform pressing force, avoids pressing offset, prevents tilting, and ensures proper pressing.

Description

Technical Field

[0001] This utility model relates to the field of air spring assembly technology, and in particular to a device for assembling a buffer block for an air spring damper. Background Technology

[0002] In order to effectively protect the damper from damage due to impact in vehicles, a buffer block 2 is generally installed inside the air chamber assembly 1, such as... Figure 1 As shown, the air chamber 1 secures the buffer block 2 by having four symmetrically arranged hook-shaped structures at the installation position of the buffer block, which hold the buffer block 2 in place within the air chamber. These hook-shaped structures are the air chamber hook heads 3, as shown... Figure 2 The existing buffer block 2, except for the metal ring 4 at the waist, is made of foamed polyurethane (PU) material. In the assembly process of the buffer block of the traditional air chamber assembly, because the buffer block 2 is a soft material, although it can be assembled by hand, the labor intensity is high. It is necessary to compress the bottom of the buffer block and put it into the air chamber during the assembly process. Manual assembly is very difficult and the assembly efficiency is low. Summary of the Invention

[0003] To address the aforementioned problems, this utility model provides a device for assembling an air spring damper buffer block.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An apparatus for assembling an air spring damper buffer block includes an air chamber fixing seat, a buffer block guide sleeve, and a buffer block pressure head;

[0006] The upper surface of the air chamber fixing seat has a mounting groove that mates with the bottom of the air chamber;

[0007] The buffer block guide sleeve is cylindrical and includes an insertion port and an outlet port. The inner diameter of the buffer block guide sleeve gradually decreases from the insertion port to the outlet port. The outlet port is provided with an outer chamfer that matches the inner chamfer of the air chamber hook. The inner diameter of the outlet port is smaller than the inner diameter of the air chamber hook.

[0008] The lower end of the buffer block pressure head is provided with a positioning guide spindle, which is concentrically arranged on the lower end surface of the buffer block pressure head.

[0009] Furthermore, an annular pressure sleeve is concentrically provided outside the positioning guide mandrel. The upper end of the annular pressure sleeve is connected to the lower end of the buffer block pressure head. The inner diameter of the annular pressure sleeve is larger than the diameter of the upper end of the buffer block and smaller than the outer diameter of the metal reinforcing ring provided at the waist of the buffer block. The distance between the lower end of the annular pressure sleeve and the lower end of the buffer block pressure head exceeds the distance between the upper end face of the metal reinforcing ring and the top of the buffer block. During press-fitting, the lower end face of the annular pressure sleeve directly presses against the upper end face of the metal reinforcing ring provided at the waist of the buffer block.

[0010] Furthermore, the inner diameter of the insertion port of the buffer block guide sleeve is greater than the maximum outer diameter of the buffer block, and the size of the outer chamfer of the outlet port is the same as the size of the inner chamfer of the air chamber hook.

[0011] Furthermore, it also includes a fixed frame, which coaxially connects the buffer block guide sleeve and the buffer block pressure head. The buffer block guide sleeve is fixedly connected to the fixed frame, and the buffer block pressure head is slidably engaged with the fixed frame.

[0012] Furthermore, a fixing plate is provided on the outer side near the upper end of the buffer block guide sleeve, and the fixing plate is provided with a through hole. A mounting plate is fixed to the lower end of the fixing frame, and the mounting plate is provided with a corresponding mounting hole. The buffer block guide sleeve and the fixing frame are fixedly connected by bolts. A top plate is fixed to the upper end of the fixing frame, and the top plate is provided with a round hole. The buffer block pressure head passes through the round hole and is slidably engaged with the round hole.

[0013] Furthermore, the fixing plate is an annular plate, and the inner diameter of the fixing plate is the same as the outer diameter of the buffer block guide sleeve. The fixing plate and the buffer block guide sleeve are integrally connected.

[0014] Furthermore, the air chamber fixing seat is also provided with a fixing hole, which is a countersunk hole.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) This device does not require manual squeezing of the large end during installation, making the operation simple and the installation faster, thus improving assembly efficiency. (2) This device is equipped with a fixed frame that coaxially connects the buffer block guide sleeve and the buffer block pressure head, ensuring that the buffer block pressure head is axially pressed and avoiding pressure offset. The buffer block pressure head has an annular pressure block. During pressing, the lower end face of the annular pressure sleeve directly presses against the upper end face of the metal reinforcing ring set on the waist of the buffer block. This ensures that the part below the reinforcing ring has sufficient support rigidity when the buffer block is pressed, and the pressing force is uniform. It also ensures that the outer diameter of the main body from the large end of the buffer block to the reinforcing ring will not change too much during pressing, avoiding tilting and ensuring that the pressing is in place. Attached Figure Description

[0016] Figure 1A schematic diagram of the air chamber and buffer block assembly;

[0017] Figure 2 This is a schematic diagram of the air chamber hook head;

[0018] Figure 3 This is a schematic diagram of the structure of a device for assembling an air spring damper buffer block according to the present invention;

[0019] Figure 4 This is a schematic diagram of the air chamber fixing base and its fixed air chamber structure according to the present invention;

[0020] Figure 5 This is a schematic diagram of the structure of the buffer block guide sleeve of this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the buffer block pressure head of this utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the buffer block guide sleeve in the engagement state between the outlet port and the air chamber hook of this utility model.

[0023] Figure 8 This is a schematic diagram of the assembly process of the buffer block of this utility model. Detailed Implementation

[0024] To provide a better understanding of the purpose, structure, features, and functions of this utility model, detailed descriptions are provided below with reference to specific embodiments.

[0025] Please refer to the reference. Figure 3 , Figure 4 , Figure 5 and Figure 6 An embodiment of the present invention provides a device for assembling an air spring damper buffer block, comprising an air chamber fixing seat 100, a buffer block guide sleeve 200, and a buffer block pressure head 300.

[0026] The upper surface of the air chamber fixing seat 100 has a mounting groove 110 that mates with the bottom of the air chamber; this facilitates placing the air chamber in the mounting groove 110 during press-fitting, positioning the air chamber assembly, facilitating press-fitting, limiting the position of the air chamber 1, preventing the air chamber from sliding during press-fitting, and ensuring successful installation.

[0027] The buffer block guide sleeve 200 is cylindrical and includes an insertion port 210 and an outlet port 220. The inner diameter of the buffer block guide sleeve 200 gradually decreases from the insertion port 210 to the outlet port 220. The outlet port 220 is provided with an outer chamfer 230 that matches the inner chamfer of the air chamber hook head 3. The inner diameter of the outlet port is smaller than the inner diameter of the air chamber hook head 3. This facilitates the insertion of the buffer block 2 into the buffer block guide sleeve 200. During press fitting, the large end of the large-diameter buffer block 2 is compressed by the inner diameter of the buffer block guide sleeve 200. The small-diameter hook-shaped opening that fixes the position of the buffer block in the air chamber is used to insert it into the air chamber hook head 3, thus assembling the buffer block 2 into place.

[0028] The lower end of the buffer block pressure head 300 is provided with a positioning guide mandrel 310, which is concentrically arranged on the lower end surface of the buffer block pressure head 300. During pressing, the positioning guide mandrel 310 passes through the channel at the top of the buffer block 200 to ensure that the buffer block 2 is upright and to prevent the buffer block 2 from being tilted and compressed, which would prevent it from being installed in the designated position.

[0029] When using, such as Figure 7 First, place the outlet port 220 of the buffer block guide sleeve 200 above the air chamber hook head 3. The buffer block guide sleeve 200 and the air chamber hook head 3 are structurally fitted / coupled. Press the buffer block guide sleeve 200 tightly onto the air chamber hook head 3, and then... Figure 8 Place the buffer block 2 into the insertion port 210 of the buffer block guide sleeve 200, with the larger end facing down. Use the buffer block pressure head 300 to push the buffer block 2 from the insertion port 210 to the outlet port 220. Guided by the inner conical buffer block guide sleeve 200, the larger end of the buffer block 2 is continuously contracted and eventually enters the air chamber hook head 3 through the outlet port 220 at the lower end of the buffer block guide sleeve 200. After entering the air chamber hook head 3, the larger end returns to its original shape and is secured in the air chamber hook head 3. Remove the buffer block guide sleeve 200 and the buffer block pressure head 300 to complete the installation. This device eliminates the need for manual squeezing of the larger end for installation, making operation simple, installation faster, and improving assembly efficiency.

[0030] Furthermore, an annular pressure sleeve 320 is concentrically provided outside the positioning guide mandrel 310. The upper end of the annular pressure sleeve 320 is connected to the lower end of the buffer block pressure head 300. The inner diameter of the annular pressure sleeve 320 is larger than the diameter of the upper end of the buffer block 2, but smaller than the outer diameter of the metal reinforcing ring 4 provided at the waist of the buffer block. The distance between the lower end of the annular pressure sleeve 320 and the lower end of the buffer block pressure head exceeds the distance between the upper end face of the metal reinforcing ring 4 and the top of the buffer block 2. During press-fitting, the lower end face of the annular pressure sleeve 320 directly presses against the upper end face of the metal reinforcing ring 4 provided at the waist of the buffer block. This ensures that the portion below the reinforcing ring 4 of the buffer block 2 has sufficient support rigidity during press-fitting, and the press-fitting force is uniform. It also ensures that the outer diameter of the main body portion of the buffer block 2 from the large end to the bottom of the reinforcing ring 4 does not change significantly during press-fitting, avoiding tilting and ensuring proper press-fitting.

[0031] Furthermore, the inner diameter of the insertion port 210 of the buffer block guide sleeve is larger than the maximum outer diameter of the buffer block 2, ensuring that the buffer block 2 can be inserted into the buffer block guide sleeve 200, which facilitates the press-fit operation.

[0032] The size of the outer chamfer 230 of the outlet port 220 is the same as the size of the inner chamfer of the air chamber hook 3. This ensures that the outlet port 220 and the air chamber hook 3 are structurally compatible / coupled, guarantees that the buffer block guide sleeve 200 can be placed on the air chamber hook 3, prevents the buffer block guide sleeve from shifting, and ensures proper press-fitting.

[0033] Furthermore, it also includes a fixed frame 400, which coaxially connects the buffer block guide sleeve 200 and the buffer block pressure head 300. The buffer block guide sleeve 200 is fixedly connected to the fixed frame 400, and the buffer block pressure head 300 is slidably engaged with the fixed frame 400. This ensures that the buffer block pressure head 300 is axially pressed in, preventing pressing misalignment and ensuring proper pressing. The fixed frame 400 has a channel for inserting the buffer block into the inner buffer block guide sleeve, facilitating buffer block insertion.

[0034] Furthermore, a fixing plate 240 is provided on the outer side near the upper end of the buffer block guide sleeve 200. The fixing plate has a through hole 241. The fixing frame 400 can be a hexahedral frame formed by connecting support rods, ensuring that the frame 400 has a channel for the buffer block to be placed into the inner buffer block guide sleeve, which is convenient for installation. A mounting plate 410 is fixed to the lower end of the fixing frame 400. The mounting plate 410 has corresponding mounting holes 411. The buffer block guide sleeve 200 and the fixing frame 400 are fixedly connected by bolts. The bolt connection is detachable, which is convenient for replacing the fixing frame 400 and the buffer block guide sleeve 200. It can be used for installing buffer blocks of different sizes and also makes it easy to replace damaged buffer block guide sleeves 200, making maintenance more convenient. A top plate 420 is fixed to the upper end of the fixing frame 400. The top plate 420 has a round hole 421. The buffer block pressure head 300 passes through the round hole 421 and is slidably engaged with the round hole 421. The buffer block is axially pressed by a 300° pressure head, ensuring the direction of pressing and guaranteeing that the buffer block is evenly stressed during pressing, thus preventing the buffer block from tilting and failing to be installed in place.

[0035] Furthermore, the fixing plate 240 is an annular plate, and the inner diameter of the fixing plate 240 is the same as the outer diameter of the buffer block guide sleeve 200. The fixing plate 240 and the buffer block guide sleeve 200 are integrally connected. This ensures the connection strength between the fixing plate 240 and the buffer block guide sleeve 200, and ensures the service life of this device.

[0036] Furthermore, the air chamber fixing seat 100 is also provided with a fixing hole 120, which is a countersunk hole. This facilitates the installation and fixing of the air chamber fixing seat 100 and prevents the air chamber fixing seat 100 from sliding during press-fitting.

[0037] It also includes an automated assembly configuration: the air chamber fixing seat 100 can be fixedly installed on a horizontally installed linear slide rail. The air chamber 1 can be placed on the air chamber fixing seat 100 by a robot or manually, and the air chamber fixing seat 100 is sent to the assembly position by the linear slide rail, waiting for press-fitting.

[0038] A servo pressing mechanism can also be installed, which includes a servo electric push rod. The upper end of the buffer block pressing head 300 is connected to the output shaft of the servo electric push rod. A frame fixing cylinder is also provided, with its output shaft connected to the upper part of the fixing frame 400. The pressing operation includes the following steps:

[0039] The air chamber is placed on the air chamber fixing seat 100 for loading → the air chamber is moved to the assembly position by a linear slide rail and waits → a manual or robotic arm grabs the buffer block → it is moved to the buffer block guide sleeve 200 inside the frame → the buffer block is placed into the buffer block guide sleeve 200 → the cylinder pushes the fixing frame 400 to drive the buffer block guide sleeve 200 to press the air chamber and complete the fitting / coupling of the guide sleeve outlet port with the air chamber hook structure → the servo electric push rod pushes the buffer block pressure head 300 to insert the buffer block and continue to descend until the buffer block is assembled in place. Automated assembly is achieved, with a total CT (time to completion) of ≤45s for the entire automated assembly line.

[0040] The coupling between the end face shape of the guide sleeve's outlet port and the air chamber hook structure, as well as the action of the guide sleeve being pressed against the air chamber by the cylinder, together ensure that the large end of the buffer block is forcibly reduced by the guide sleeve, allowing it to pass smoothly through the joint without causing it to swell or get stuck.

[0041] This utility model has been described by the above-described embodiments; however, these embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. Conversely, any modifications and refinements made without departing from the spirit and scope of this utility model are within the scope of patent protection of this utility model.

Claims

1. A device for assembling an air spring damper buffer block, characterized in that: Includes air chamber fixing seat, buffer block guide sleeve and buffer block pressure head; The upper surface of the air chamber fixing seat has a mounting groove that mates with the bottom of the air chamber; The buffer block guide sleeve is cylindrical and includes an insertion port and an outlet port. The inner diameter of the buffer block guide sleeve gradually decreases from the insertion port to the outlet port. The outlet port is provided with an outer chamfer that matches the inner chamfer of the air chamber hook. The inner diameter of the outlet port is smaller than the inner diameter of the air chamber hook. The lower end of the buffer block pressure head is provided with a positioning guide spindle, which is concentrically arranged on the lower end surface of the buffer block pressure head.

2. The device for assembling an air spring damper buffer block as described in claim 1, characterized in that: An annular pressure sleeve is also concentrically provided outside the positioning guide mandrel. The upper end of the annular pressure sleeve is connected to the lower end of the buffer block pressure head. The inner diameter of the annular pressure sleeve is larger than the diameter of the upper end of the buffer block and smaller than the outer diameter of the metal reinforcing ring provided at the waist of the buffer block. The distance between the lower end of the annular pressure sleeve and the lower end of the buffer block pressure head exceeds the distance between the upper end face of the metal reinforcing ring and the top of the buffer block. During press-fitting, the lower end face of the annular pressure sleeve directly presses against the upper end face of the metal reinforcing ring provided at the waist of the buffer block.

3. The device for assembling an air spring damper buffer block as described in claim 1, characterized in that: The inner diameter of the insertion port of the buffer block guide sleeve is greater than the maximum outer diameter of the buffer block, and the size of the outer chamfer of the outlet port is the same as the size of the inner chamfer of the air chamber hook.

4. The device for assembling an air spring damper buffer block as described in claim 1, characterized in that: It also includes a fixed frame, which coaxially connects the buffer block guide sleeve and the buffer block pressure head. The buffer block guide sleeve is fixedly connected to the fixed frame, and the buffer block pressure head is slidably engaged with the fixed frame.

5. The device for assembling an air spring damper buffer block as described in claim 4, characterized in that: A fixing plate is provided on the outer side near the upper end of the buffer block guide sleeve. The fixing plate has a through hole. A mounting plate is fixed to the lower end of the fixing frame. The mounting plate has a corresponding mounting hole. The buffer block guide sleeve and the fixing frame are fixedly connected by bolts. A top plate is fixed to the upper end of the fixing frame. The top plate has a round hole. The buffer block pressure head passes through the round hole and is slidably engaged with the round hole.

6. The apparatus for assembling an air spring damper buffer block as described in claim 5, characterized in that: The fixing plate is an annular plate, and the inner diameter of the fixing plate is the same as the outer diameter of the buffer block guide sleeve. The fixing plate and the buffer block guide sleeve are integrally connected.

7. The apparatus for assembling an air spring damper buffer block as described in claim 1, characterized in that: The air chamber fixing seat is also provided with a fixing hole, which is a countersunk hole.

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