Pneumatic tool for cutting experiment

Abstract

The utility model provides a pneumatic tool for a cutting experiment, which comprises an angle grinder which comprises an angle grinder body, a handle and a transmission mechanism extending out of the bottom of the angle grinder body; the fixing ring is arranged on the outer side of the transmission mechanism in a sleeving manner; the fixing plate is mounted below the fixing ring through the fixing ring; the cam is arranged below the fixed plate and is connected with the transmission mechanism; the cam follower, the blade mounting plate and the blade are sequentially connected with the cam; under the driving of the transmission mechanism, the cam rotates, and then the blade is driven to do reciprocating cutting motion. According to the utility model, the structure of a common pneumatic tool is modified, the interaction effect between a blade and a cut object during manual cutting of an operator is simulated, huge physical output caused by manual cutting is avoided, and even the glue separation work between the inner and outer plates of the vehicle door can be completed by only one operator; and the working efficiency is greatly improved, and the labor cost is reduced.

Description

A pneumatic tool for knife cutting experiments Technical Field

[0001] This utility model relates to the field of pneumatic tool technology, and more specifically to a pneumatic tool for knife cutting experiments. Background Technology

[0002] In the automotive manufacturing industry, car tailgates are typically made by bonding outer and inner panels together with adhesive. To test the strength and curing of the adhesive in the tailgate, a cutting test is required. The cutting test is one of the important tests for verifying the quality and safety of the bonded tailgate.

[0003] Because the adhesive has a very strong bond after curing, separating it and inspecting for any areas of failure is extremely difficult. One person must first cut the pressed tailgate outer panel along the adhesive lines, while two others use pliers to hold the panel in place and pull it, while another person continuously cuts the adhesive with a knife, separating it little by little. If the adhesion is poor, it will be pulled apart directly; if the adhesion is good, the adhesive needs to be cut repeatedly. Therefore, this cutting experiment typically requires four people simultaneously, taking approximately six hours or even longer. Furthermore, the experiment is physically demanding, resulting in excessively high labor costs. Summary of the Invention

[0004] The purpose of this invention is to provide a pneumatic tool for knife cutting experiments, thereby solving the problems of time-consuming, labor-intensive, and high-cost knife cutting experiments in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A pneumatic tool for knife cutting experiments is provided, comprising: an angle grinder, including: an angle grinder body, a handle, and a transmission mechanism extending from the bottom of the angle grinder body; a fixing ring sleeved on the outside of the transmission mechanism; a fixing plate mounted below the fixing ring via the fixing ring; a cam connected to the transmission mechanism below the fixing plate; a cam follower, a blade mounting plate, and a blade connected in sequence to the cam; wherein, driven by the transmission mechanism, the cam rotates, thereby driving the blade to perform reciprocating cutting motion.

[0007] Preferably, the pneumatic tool further includes a front guide structure mounted on the front end of the fixed plate to guide the blade in front of it.

[0008] Preferably, the pneumatic tool further includes a bottom guide structure mounted below the blade to facilitate guidance below the blade.

[0009] Preferably, the pneumatic tool further includes a safety guard mounted below the fixed plate to surround the rear end of the cam and the blade.

[0010] Preferably, the blade is a wallpaper blade.

[0011] Preferably, the angle grinder is an electric angle grinder or a pneumatic angle grinder.

[0012] When the angle grinder is a pneumatic angle grinder, it also includes a button for controlling the rotational speed of the transmission mechanism, thereby adjusting the cutting speed of the blade. It should be understood that the pneumatic angle grinder is controlled by a button that allows control of the airflow; that is, the greater the force applied to the button, the greater the airflow, the faster the angle grinder rotates, and correspondingly, the faster the blade cuts.

[0013] This invention modifies the structure of ordinary pneumatic tools by modifying a cam device in the rotating part of the pneumatic tool. This cam device, together with the blade mounting plate, drives the blade, thereby simulating the interaction between the blade and the workpiece when the operator is manually cutting. This allows the pneumatic tool to produce the effect of the blade moving back and forth during rotation.

[0014] It should also be understood that the pneumatic tool provided by this utility model can not only be used to separate the glue on the inner and outer panels of car doors, but also to cut the wood or plastic products when wood or plastic is difficult to separate during the decoration process.

[0015] In summary, the pneumatic tool for knife cutting experiments provided by this utility model has the following beneficial effects:

[0016] 1) By having the operator support the pneumatic tool, it produces a reciprocating cutting effect during use, which greatly reduces the operator's labor intensity.

[0017] 2) By manually controlling the air path size and adjusting the angle grinder speed, the experimental operation process was made safer and more stable;

[0018] 3) The safety guard design encloses both the rotating structure and the blade, greatly improving the safety of the pneumatic tool;

[0019] 4) By modifying ordinary pneumatic tools, the huge physical exertion caused by manual cutting is avoided. Even one operator can complete the glue separation work between the inner and outer panels of the car door, which greatly improves work efficiency and reduces labor costs. Attached Figure Description

[0020] Figure 1 is a schematic diagram of the overall structure of a pneumatic tool according to the present invention;

[0021] Figure 2 is an exploded view of the pneumatic tool;

[0022] Figure 3 is a detailed enlarged schematic diagram of the blade and cam at the bottom of the pneumatic tool. Detailed Implementation

[0023] The present invention will be further described below with reference to specific embodiments. It should be understood that the following embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] Referring to Figures 1 and 2, a preferred embodiment of the present invention provides a pneumatic tool for knife cutting experiments. It should be understood that this pneumatic tool is a further modification of the existing angle grinder 10. The angle grinder 10 includes: an angle grinder body 11, a handle 12, and a transmission mechanism 13 extending from the bottom of the angle grinder body 11. The pneumatic tool also includes: a fixing ring 1, a fixing plate 2, a cam 3, a cam follower 4, a blade mounting plate 5, a blade 6, a front guide structure 7, a bottom guide structure 8, and a safety guard 9.

[0026] Specifically, the fixing ring 1 is a circular component used for circumferential fixation around the transmission mechanism 13, providing positioning support between the angle grinder body 11 and the fixing plate 2. The fixing plate 2 is Z-shaped, further providing fixation for components such as the cam and blade mounting plate below. It should be understood that this is only a preferred example and not a limitation; the Z-shape is the preferred shape of the fixing plate 2, which is more conducive to the sequential arrangement of the cam, blade mounting plate, and blade.

[0027] As shown in Figures 2 and 3, cam 3 is connected to transmission mechanism 13 below fixed plate 2, allowing it to rotate under the drive of transmission mechanism 13. Cam 3, cam follower 4, blade mounting plate 5, and blade 6 are connected in sequence, with cam follower 4 providing eccentric rotation. Specifically, the bottom of blade mounting plate 5 has a groove that matches the size of blade 6, allowing blade 6 to fit perfectly. The screw hole at the tail of blade 6 matches the screw hole at the tail of blade mounting plate 5, and the blade mounting plate 5 and blade 6 are fixed together by installing the fixing screw on cam 3.

[0028] According to this preferred embodiment, the pneumatic tool further includes a front guide structure 7 mounted on the front end of the fixed plate 2 and a bottom guide structure 8 mounted below the blade 6 to facilitate guidance in front of and below the blade 6.

[0029] According to this preferred embodiment, the pneumatic tool further includes a safety guard 9 mounted below the mounting plate 2 to surround the rear ends of the cam 3 and the blade 6, thereby improving the overall safety of the pneumatic tool.

[0030] According to this preferred embodiment, blade 6 is a wallpaper blade.

[0031] According to this utility model, the angle grinder 10 is an electric angle grinder or a pneumatic angle grinder. When the angle grinder is a pneumatic angle grinder, it also includes a button for controlling the rotation speed of the transmission mechanism, thereby adjusting the cutting speed of the blade 6. As shown in Figure 3, driven by the transmission mechanism 13 of the angle grinder 10, the cam 3 rotates, thereby driving the blade 6 to perform reciprocating cutting motion.

[0032] According to a preferred embodiment of the present invention, the pneumatic tool is assembled according to the following steps:

[0033] First, install the retaining ring 1 on the outer periphery of the angle grinder transmission mechanism 13; then, fix the retaining plate 2 below the retaining ring 1; next, install the front guide structure 7 on the front end of the retaining plate 2 to provide protection and adjust the angle; then, assemble the cam 3, cam follower 4, blade mounting plate 5, and blade 6 from left to right (as shown in Figure 2); install the assembled blade 6 and other parts at the transmission mechanism 13 with the center of the cam 3 as the mounting point; finally, install the safety guard 9 and the bottom guide structure 8.

[0034] When this pneumatic tool is used to cut the inner and outer panels of the car door, the cam 3 rotates under the drive of the angle grinder transmission mechanism 13, which in turn drives the blade 6 to perform reciprocating cutting motion. The tip of the blade 6 extends into the area between the inner and outer panels to cut the glued area. The front guide structure 7 and the bottom guide structure 8 can effectively lift the outer panel and the inner panel at a 45-degree angle or other angles. At the same time, the safety guard 9 plays a safety protection role to avoid injury to the operator.

[0035] It should be understood that without using this pneumatic cutting tool, after knocking open the outer panel, one operator needs to forcefully pull the outer panel to expose the adhesive bonding between the outer and inner panels, while another operator manually cuts the adhesive to gradually separate them. In areas with particularly strong adhesion, other operators are required to simultaneously hold the inner panel in place. However, with this pneumatic cutting tool, the adhesive separation can be completed by a single operator, significantly improving work efficiency.

[0036] However, the pneumatic tool for knife cutting experiments provided by this utility model, by modifying ordinary pneumatic tools and utilizing the principle of eccentric bearing rotation, simulates the blade drawing and retracting actions during manual cutting, greatly reducing the labor intensity of operators and improving work efficiency and experimental safety.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various variations can be made to the above embodiments of this utility model. All simple and equivalent changes and modifications made based on the claims and description of this utility model application fall within the protection scope of the claims of this utility model patent. Any aspects not described in detail in this utility model are conventional technical content.

Claims

1. A pneumatic tool for knife-cutting experiments, characterized in that, include: An angle grinder includes: an angle grinder body, a handle, and a transmission mechanism extending from the bottom of the angle grinder body; a fixing ring sleeved on the outside of the transmission mechanism; a fixing plate mounted below the fixing ring via the fixing ring; a cam connected to the transmission mechanism below the fixing plate; a cam follower, a blade mounting plate, and a blade connected in sequence to the cam; wherein, driven by the transmission mechanism, the cam rotates, thereby driving the blade to perform a reciprocating cutting motion.

2. The pneumatic tool according to claim 1, characterized in that, The pneumatic tool further includes a front guide structure mounted on the front end of the fixed plate to guide the blade in front of it.

3. The pneumatic tool according to claim 1, characterized in that, The pneumatic tool further includes a bottom guide structure mounted below the blade to facilitate guidance below the blade.

4. The pneumatic tool according to claim 1, characterized in that, The pneumatic tool also includes a safety guard mounted below the fixed plate to surround the rear end of the cam and the blade.

5. The pneumatic tool according to claim 1, characterized in that, The blade is a wallpaper blade.

6. The pneumatic tool according to claim 1, characterized in that, The angle grinder is either an electric angle grinder or a pneumatic angle grinder.

7. The pneumatic tool according to claim 6, characterized in that, When the angle grinder is a pneumatic angle grinder, the pneumatic angle grinder also includes a button for controlling the rotation speed of the transmission mechanism, thereby adjusting the cutting speed of the blade.

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