A welding device for a bucket lip and tooth block assembly

Abstract

The utility model relates to excavator manufacturing equipment technical field, concretely relates to a kind of welding device of excavator front blade plate and tooth seat joint, including mould core support, its top is integrated with the accurate adaptation of the placement top mould of excavator front blade plate special-shaped curved surface, and the transverse movement and longitudinal deviation of front blade plate are limited by shape surface adhesion;Detachable placement bottom mould is assembled to its bottom, tooth seat hole processed according to design parameter is equipped in it, and the interference fit positioning of tooth seat joint is realized.The placement top mould is equipped with rear fixed seat and jack, and is fixed by jack and rear end seat limit, enhances axial stability and disperses stress.Mould core support is opened operation window, covers welding area blind area, improves operation convenience and production efficiency.The device is adapted to multiple models of excavator by modular design, can be completed by changing model only by replacing placement bottom mould, significantly reduces equipment cost, solves the problem of low positioning accuracy and unstable welding quality in prior art.

Description

Technical Field

[0001] This utility model relates to the field of excavator bucket manufacturing equipment technology, specifically to a welding device for an assembly of a bucket front cutting edge plate and a toothed seat. Background Technology

[0002] As a core operating component of construction machinery, the bucket's front cutting edge directly bears the impact of digging and material wear, while the tooth assembly is used to assemble the bucket teeth to enhance digging capacity. The welding quality of these two components directly determines the bucket's load-bearing strength, service life, and operating efficiency. In the current bucket manufacturing process, the welding positioning accuracy of the front cutting edge and tooth assembly is relatively low. This is because the front cutting edge is often an irregular curved surface structure, making it difficult for traditional clamps to fit tightly against its shape, easily leading to lateral movement or longitudinal offset. At the same time, the tooth assembly needs to be evenly distributed along the underside of the front cutting edge, and manual positioning can easily cause deviations in the spacing between adjacent tooth assemblies, resulting in jamming or uneven stress during subsequent bucket tooth assembly.

[0003] The aforementioned problems result in low welding efficiency, high rework rates, and increased maintenance costs for excavator buckets. Therefore, there is an urgent need for a welding device that is precise in positioning, reliable in fixing, versatile, and easy to operate, in order to overcome the shortcomings of existing technologies. Utility Model Content

[0004] The purpose of this utility model is to provide a welding device for the front cutting edge plate and tooth seat assembly of a bucket, which aims to solve the problems of inaccurate positioning, unreliable fixing and inconvenient operation in the existing welding of the front cutting edge plate and tooth seat assembly of a bucket.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A welding device for a bucket front cutting edge plate and a toothed assembly includes a bucket body, the bucket body including a front cutting edge plate and a rear end seat; it also includes a mold core support, the top of the mold core support is provided with a mounting top mold adapted to the inner side wall of the bucket body, and the bottom of the mold core support is provided with a mounting bottom mold for positioning and mounting the toothed assembly; the mounting top mold is also provided with a rear fixing seat that cooperates with the rear end seat for installation and fixation.

[0006] Preferably, the mounting mold includes a plurality of toothed holes for inserting and fixing the toothed assembly.

[0007] Preferably, the rear fixing seat has a socket that is fitted with a pin for limiting and fixing to the rear end seat.

[0008] Preferably, the top mold is also provided with a mating groove that is adapted to the rear end seat.

[0009] Preferably, the mold core support also has an operation window for welding.

[0010] Compared with the prior art, the present invention has the following beneficial effects: 1. The top mold is designed to precisely fit the inner wall of the bucket body. This surface fit restricts the lateral movement and longitudinal offset of the front cutting edge, eliminating positioning deviations caused by poor fit in traditional fixtures. Simultaneously, the rear fixing seat uses pins to limit and fix the rear end seat, achieving precise axial positioning and indirectly ensuring the stability of the front cutting edge's reference position. This effectively avoids misalignment caused by vibration or stress during welding, significantly improving welding quality. 2. The bottom mold is connected to the mold core support via threaded fasteners or pins, enabling quick replacement. One set of mold core support can accommodate various bucket models; only the corresponding bottom mold needs to be replaced to meet production requirements, significantly reducing equipment investment costs and improving the economic efficiency and applicability of the device. Simultaneously, through precise positioning and reliable fixing, the risk of deformation and misalignment during welding is significantly reduced, increasing the finished product qualification rate and thus reducing material waste and labor losses due to rework. Furthermore, this device has a simple structure, reasonable design, and is easy to maintain, further reducing long-term operating costs. 3. The tooth seat holes for the bottom mold are precisely machined according to the bucket design parameters. Once the tooth seat assembly is inserted, the positioning is completed without manual adjustment. The interference fit design and depth control of the tooth seat holes ensure positioning stability and avoid obstructing the welding area, significantly reducing the deviation in the spacing between adjacent tooth seats and solving the problems of jamming or uneven force during subsequent bucket tooth assembly. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the disassembled structure of this utility model; Figure 2 This is a schematic diagram of the structure in which the bottom mold is installed in this utility model.

[0012] Reference numerals: 100-front cutting edge plate; 200-rear end seat; 300-tooth seat assembly; 400-mold core support; 410-rear fixed seat; 411-insertion hole; 420-operation window; 430-mating groove; 500-base mold mounting; 510-tooth seat hole. Detailed Implementation

[0013] 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.

[0014] See Figure 1 , Figure 2 The present invention proposes a welding device for a bucket front cutting edge plate and toothed seat assembly, comprising a bucket body, wherein the bucket body includes a front cutting edge plate 100 and a rear end seat 200.

[0015] The welding device also includes a mold core support 400, which serves as the core support frame of the device. The top of the mold core support 400 is integrated with a top mold that is adapted to the inner wall of the bucket body, and the bottom of the mold core support 400 is equipped with a bottom mold 500 for positioning the toothed assembly 300. The mold core support 400 ensures the relative positional accuracy of the top mold and the bottom mold 500 through its own rigid structure, providing a stable reference for welding and avoiding welding misalignment caused by deformation of the support.

[0016] Among them, the top mold is precisely fitted to the inner wall of the bucket body, conforming to the irregular curved surface contour of the front cutting edge plate 100, limiting its lateral movement and longitudinal offset, ensuring the positioning stability of the front cutting edge plate 100 from the contour, and reducing welding deformation.

[0017] Furthermore, the top mold is equipped with a rear fixing seat 410 that mates with the rear end seat 200. The rear fixing seat 410 axially positions the rear end seat 200, indirectly fixing the reference position of the front cutting plate 100 and preventing welding deviation of the front cutting plate 100 caused by displacement of the rear end seat 200. Specifically, the rear fixing seat 410 has an insertion hole 411 that is adapted to the rear end seat 200 for pin limiting and fixing. By having the pin pass through the insertion hole 411 and the rear end seat 200, the rear end seat 200 can be quickly limited and fixed. Compared with the traditional clamping method, the positioning efficiency is improved, the fixing reliability is stronger, and it can resist the influence of welding vibration.

[0018] In addition, the top mold is provided with a mating groove 430 that is compatible with the rear end seat 200. In addition to eliminating mechanical interference, it can also increase the contact area between the rear end seat 200 and the top mold, disperse local stress, avoid local deformation of the front cutting plate 100 caused by the concentration of fixing stress in the rear end seat 200, and further improve the fixing stability.

[0019] The mounting base mold 500 is detachably installed and fixed to the bottom of the mold core support 400, such as by means of threaded fasteners or pins, which is easily achievable and should be understood by those skilled in the art. This facilitates the replacement of the corresponding mounting base mold 500 with different specifications of the toothed assembly 300. One set of mold core support 400 can be adapted to 3-5 different models of excavator buckets, significantly improving versatility and reducing equipment investment costs.

[0020] The mounting base mold 500 includes multiple tooth seat holes 510 for inserting and fixing the tooth seat assembly 300. The position and spacing of each tooth seat hole 510 are precisely machined according to the bucket design parameters. After the tooth seat assembly 300 is inserted, it can be accurately positioned without manual adjustment.

[0021] The mold core support 400 is also provided with an operation window 420 for welding. The operation window 420 corresponds to the welding area of ​​the front cutting edge plate 100 and the toothed assembly 300, providing sufficient operating space for the welding torch.

[0022] The working process of this utility model is as follows: Preliminary preparation: Select the corresponding bottom mold 500 according to the model of the bucket to be welded, the curvature of the front cutting edge 100, and the specifications of the toothed assembly 300; if the number, hole diameter, or spacing of the toothed assemblies 300 are different, remove the original bottom mold 500 by disassembling the threaded fastener at the bottom of the mold core bracket 400 and replace it with a new bottom mold 500 that matches the current toothed assembly 300; after assembly, calibrate the levelness of the bottom mold 500 and the positional accuracy of the toothed hole 510 with measuring tools to ensure that its relative position with the top mold conforms to the bucket design parameters. Bucket body positioning: First, align the inner wall of the front cutting edge plate 100 of the bucket body with the top mold on the top of the mold core support 400, and slowly lower it until the front cutting edge plate 100 is completely in contact with the top mold. Use the irregular curved surface contour of the top mold to achieve the shape positioning of the front cutting edge plate 100 and limit its lateral and longitudinal displacement. Then, adjust the position of the rear end seat 200 of the bucket body so that it is in contact with the rear fixing seat 410 of the top mold. Then, insert the pin into the corresponding hole of the top mold 411 and the rear end seat 200 to fix the rear end seat 200. Check the fit between the front cutting edge plate 100 and the top mold, and the fit between the rear end seat 200 and the rear fixing seat 410 to ensure that there is no looseness or displacement. Positioning of the toothed assembly 300: According to the design requirements of the excavator bucket, insert the toothed assemblies 300 one by one into the toothed holes 510 of the bottom mold 500. The diameter of the toothed hole 510 is interference-fitted with the toothed assembly 300, and the depth is controlled at a suitable position at the height of the toothed assembly 300 to ensure stable positioning without obstructing the welding area. After calibrating the spacing between adjacent toothed assemblies 300 with a ruler and confirming that there is no misalignment, gently tap the top of the toothed assembly 300 to make it fully fit with the bottom of the bottom mold 500, thus completing the hole positioning of the toothed assembly 300. Welding operation: The operator holds a welding torch and extends it into the welding area through the operation window 420 of the mold core support 400. First, the operator welds the outer joint of the front cutting edge plate 100 and the tooth seat assembly 300. After the outer welding is completed, the operator goes into the inner blind area through the operation window 420 to repair the inner joint. The size and position design of the operation window 420 ensures that the welding torch can cover the entire welding area without any dead angles. Finished product removal and model change: After welding is completed and cooled, pull out the pin of the rear end seat 200 and slowly lift the bucket body from the top mold to complete the finished product removal; if the bucket model needs to be changed, repeat steps 1-4, only the bottom mold 500 needs to be replaced, and there is no need to adjust the mold core support 400 and the top mold.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A welding device for a bucket front cutting edge plate and toothed seat assembly, comprising a bucket body, the bucket body including a front cutting edge plate and a rear end seat; characterized in that: It also includes a mold core support, the top of which is provided with a mounting top mold adapted to the inner side wall of the bucket body, and the bottom of which is provided with a mounting bottom mold for positioning and mounting the tooth seat assembly; the mounting top mold is also provided with a rear fixing seat that cooperates with the rear end seat for installation and fixation.

2. The welding device for the bucket front cutting edge plate and toothed assembly as described in claim 1, characterized in that: The mounting base mold includes multiple toothed holes for inserting and fixing the toothed assembly.

3. The welding device for the bucket front cutting edge plate and toothed assembly as described in claim 1, characterized in that: The rear fixing seat has a socket that is adapted to the rear end seat for pin positioning and fixing.

4. The welding device for the bucket front cutting edge plate and toothed assembly as described in claim 1, characterized in that: The top mold is also provided with a mating groove that is compatible with the rear end seat.

5. The welding device for the bucket front cutting edge plate and toothed assembly as described in any one of claims 1 to 4, characterized in that: The mold core support also has an operation window for welding.

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