Efficient mechanical welding auxiliary clamp

Abstract

The utility model relates to the technical field of machining equipment, and discloses an efficient mechanical welding auxiliary clamp which comprises a fixing frame, a clamping mechanism and an extraction mechanism, the clamping mechanism and the extraction mechanism are arranged on the fixing frame, the clamping mechanism comprises a convex plate fixedly connected to the middle of the inner bottom wall of the fixing frame, and electric push rods are rotationally connected to the two ends of the top of the convex plate; supporting plates are fixedly connected to the two ends of the inner bottom wall of the fixing frame, connecting plates are fixedly connected to the tops of the supporting plates, hydraulic push rods are fixedly connected to the side faces of the connecting plates, and mounting shells are fixedly connected to the output ends of the hydraulic push rods; the inner wall of the mounting shell is slidably connected with replacement clamping plates. Through the arrangement of the detachable and replaceable replacement clamping plate and the negative-pressure circulating extraction mechanism, the effects of quickly adapting to workpieces of different specifications and effectively collecting welding fume are achieved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical processing equipment technology, and in particular to a high-efficiency mechanical welding auxiliary fixture. Background Technology

[0002] During the welding process of mechanical parts, operators need to use auxiliary fixtures to limit and stabilize the placement of the mechanical parts. The stability of the auxiliary fixtures in fixing the mechanical parts directly determines the accuracy of the welding process and the quality of the final product.

[0003] Existing mechanical welding auxiliary fixtures adopt an integrated or fixed-size clamping structure, with the clamping components rigidly connected directly to the drive source or fixed frame. This inflexible structural design means that the auxiliary fixture can only adapt to mechanical parts of a single width. When the size of the mechanical part to be processed changes, the existing mechanical welding auxiliary fixture cannot be directly adapted to the new clamping requirements through simple adjustments. Operators need to replace the entire auxiliary fixture or perform tedious disassembly and reassembly of the clamping components. Frequent equipment changes severely reduce the continuity and production efficiency of mechanical welding processing. In addition, the existing auxiliary fixtures have relatively limited functions and cannot simultaneously collect and treat the fumes and impurities generated during the welding process under negative pressure. The accumulation of fumes not only deteriorates the processing environment but also hinders the dissipation of heat in the welding area.

[0004] Therefore, this utility model proposes a high-efficiency mechanical welding auxiliary fixture to overcome the shortcomings of the prior art. Utility Model Content

[0005] In the existing technology, mechanical welding auxiliary fixtures usually adopt an integrated or fixed-specification clamping structure, which results in poor adaptability of the auxiliary fixtures to mechanical parts of different widths. This requires frequent replacement of the entire fixture or cumbersome disassembly and assembly operations, thereby reducing processing efficiency. In addition, existing fixtures lack the function of synchronously collecting and treating welding fumes and impurities under negative pressure. This utility model aims to provide a high-efficiency mechanical welding auxiliary fixture with an improved structure that can effectively solve the above problems.

[0006] This utility model provides a high-efficiency mechanical welding auxiliary fixture, including a fixed frame, a clamping mechanism and an extraction mechanism disposed on the fixed frame. The clamping mechanism includes a convex plate fixedly connected to the middle of the bottom wall of the fixed frame. Electric push rods are rotatably connected to both ends of the top of the convex plate. An auxiliary clamping plate is rotatably connected to the middle of the top wall of the convex plate through a rotating shaft. The output end of the electric push rod is rotatably connected to the auxiliary clamping plate. Support plates are fixedly connected to both ends of the bottom wall of the fixed frame. Connecting plates are fixedly connected to the top of the support plates. Hydraulic push rods are fixedly connected to opposite sides of the two connecting plates. A mounting shell is fixedly connected to the output end of the hydraulic push rod. A replacement clamping plate is slidably connected to the inner wall of the mounting shell. Bolts are threadedly connected to the mounting shell. The extraction mechanism includes a collection shell fixedly connected to the bottom of the front side of the fixed frame. A filter plate is slidably installed inside the collection shell. A connecting pipe is connected to one end of the collection shell. An extraction fan is connected to the end of the connecting pipe away from the collection shell. A three-way pipe is connected to the other end of the collection shell. An extraction head is connected to the end of the three-way pipe away from the collection shell.

[0007] The mounting housing has an internal cavity structure that can accommodate the replacement clamping plate to slide into, and the replacement clamping plate is installed through a threaded connection of bolts. As a component that directly contacts the workpiece, the replacement clamping plate can be removed from the mounting housing and replaced with replacement clamping plates of different specifications.

[0008] Furthermore, the support plate, connecting plate, hydraulic push rod, and mounting shell are combined in a hierarchical fixing manner to form a lateral drive main clamping structure, while the convex plate, electric push rod, and auxiliary clamping plate are combined in a rotational engagement manner to form a bottom drive auxiliary positioning structure. The two work together to achieve multi-directional stabilization of mechanical components.

[0009] Preferably, the mounting shell sidewall and the outer side of the replacement clamp are provided with threaded through holes, the middle of the bolt is threaded into the threaded through hole, and the end of the bolt is threaded into the sidewall of the replacement clamp. The replacement clamp can be pressed and fixed and loosened and unlocked by rotating the bolt.

[0010] Preferably, the mounting shell has grooves on both sides, and the outer wall of the replacement clamp is provided with a slider that matches the groove. The replacement clamp is slidably connected to the groove through the slider, and the structural fit restricts the falling direction of the replacement clamp and provides guidance.

[0011] Preferably, there are two auxiliary clamping plates, with the bottom of each auxiliary clamping plate fitted around the outer periphery of the rotating shaft. The two auxiliary clamping plates are symmetrically arranged about the axis of the rotating shaft to form a split clamping structure to adapt to the shape of the bottom of the workpiece.

[0012] Preferably, there are two extraction heads, with the two extraction heads fixedly connected to the top of the left and right sides of the inner wall of the fixed frame on opposite sides, and the air inlet of the extraction head facing the center of the inside of the fixed frame, thereby expanding the coverage and capture range of the rising flue gas.

[0013] Preferably, the inner wall of the collection shell is provided with a slide rail, and there are two filter plates, both of which are slidably connected in the slide rail. The double-layer filter structure combined with the slide rail design facilitates the disassembly and cleaning of the filter plates.

[0014] Preferably, the support plate is vertically fixed to the bottom wall of the fixed frame, and the connecting plate is vertically fixed to the top of the support plate. The connecting plate has an L-shaped structure, which provides a stable support base for lateral clamping and avoids the top space of the workpiece.

[0015] Preferably, the extraction fan is fixedly installed on the outer wall of the fixed frame, and the connecting pipe is a corrugated flexible hose, which utilizes the flexibility of the corrugated flexible hose to buffer the vibration generated during the operation of the extraction fan.

[0016] Preferably, the input end of the three-way pipe is connected to the collection shell, and the two output ends of the three-way pipe are respectively connected to the two extraction heads to form a connected diversion extraction pipeline system.

[0017] This utility model has the following beneficial effects:

[0018] 1. This utility model solves the problem that existing welding fixtures can only fix parts of a single specification and have poor versatility by setting a sliding replacement clamping plate in the mounting shell of the lateral clamping mechanism and using bolts for quick locking and unlocking. It achieves the effect of quickly disassembling and replacing clamping plates of different specifications according to the width of the machine to be processed, thereby greatly improving the adaptability of the fixture and processing efficiency.

[0019] 2. This utility model, by setting up an extraction mechanism including a top extraction head, a collection shell with a filter plate and an extraction fan, constructs a negative pressure circulating air path, which solves the problem that high-temperature fumes and harmful particles generated in the existing welding process are easy to spread everywhere and difficult to be cleaned up in a unified manner, thus polluting the environment. It achieves the effect of effectively capturing and filtering welding fumes and dust, preventing the accumulation of impurities, improving the hygiene of the working environment and assisting in heat dissipation by using negative pressure airflow. Attached Figure Description

[0020] Figure 1 This is a perspective view of a high-efficiency mechanical welding auxiliary fixture proposed in this utility model;

[0021] Figure 2 This is a front view of a high-efficiency mechanical welding auxiliary fixture proposed in this utility model;

[0022] Figure 3 This is an exploded view of the replacement clamping plate of a high-efficiency mechanical welding auxiliary fixture proposed in this utility model;

[0023] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0024] Figure 5 This is a cross-sectional view of the fixing frame of a high-efficiency mechanical welding auxiliary fixture proposed in this utility model.

[0025] Legend:

[0026] 1. Fixed frame; 2. Clamping mechanism; 201. Support plate; 202. Connecting plate; 203. Hydraulic push rod; 204. Mounting shell; 205. Bolt; 206. Replacement clamping plate; 207. Convex plate; 208. Electric push rod; 209. Auxiliary clamping plate; 210. Rotating shaft; 211. Threaded through hole; 212. Slide groove; 3. Extraction mechanism; 301. Extraction fan; 302. Connecting pipe; 303. Collection shell; 304. Filter plate; 305. T-pipe; 306. Extraction head; 307. Slide rail. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] Example:

[0029] Please refer to Figures 1 to 5 This utility model provides a high-efficiency mechanical welding auxiliary fixture, which aims to solve the problems of existing fixtures having a single clamping specification, being unable to adapt to mechanical parts of different widths, and the difficulty in uniformly collecting and processing welding fumes and debris.

[0030] Please refer to Figure 1 and Figure 2 The high-efficiency mechanical welding auxiliary fixture includes a fixed frame 1, a clamping mechanism 2 and an extraction mechanism 3 set on the fixed frame 1. The fixed frame 1 is used as a support carrier for the welding auxiliary fixture. The clamping mechanism 2 is used for multi-level positioning and fixing of the machinery to be processed of different specifications. The extraction mechanism 3 is used for negative pressure collection and filtration of the fumes and impurities generated during the welding process.

[0031] The clamping mechanism 2 includes a convex plate 207 fixedly connected to the middle of the bottom wall of the fixed frame 1. The convex plate 207 serves as the main load-bearing component at the bottom. Both ends of the top of the convex plate 207 are rotatably connected to electric push rods 208. The middle of the top wall of the convex plate 207 is rotatably connected to an auxiliary clamping plate 209 via a rotating shaft 210. There are two auxiliary clamping plates 209. The bottom of the two auxiliary clamping plates 209 are both sleeved on the outer periphery of the rotating shaft 210 and are symmetrically arranged about the axis of the rotating shaft 210. The output end of the electric push rod 208 is rotatably connected to the auxiliary clamping plate 209. Through the extension and retraction drive of the electric push rod 208 and the limiting action of the rotating shaft 210, the auxiliary clamping plate 209 can complete the opening and closing action, thereby realizing the initial auxiliary clamping of the bottom of the machine to be processed.

[0032] Please refer to Figure 1 , Figure 2 and Figure 3 Support plates 201 are fixedly connected to both ends of the inner bottom wall of the fixed frame 1. The support plates 201 are vertically fixed to the inner bottom wall of the fixed frame 1. A connecting plate 202 is fixedly connected to the top of the support plate 201. The connecting plate 202 is vertically fixed to the top of the support plate 201 and has an L-shaped structure. A hydraulic push rod 203 is fixedly connected to the opposite side of the two connecting plates 202. A mounting shell 204 is fixedly connected to the output end of the hydraulic push rod 203. A replacement clamping plate 206 is slidably connected to the inner wall of the mounting shell 204. A bolt 205 is also threadedly connected to the mounting shell 204. The interchangeability of the fixture specifications is achieved through the cooperation of the mounting shell 204 and the replacement clamping plate 206.

[0033] Please refer to Figure 3 and Figure 4 The inner wall of the mounting shell 204 is provided with a sliding groove 212 extending along its own length. One side of the replacement clamp 206 is slidably fitted into the sliding groove 212 of the mounting shell 204, which not only ensures the guiding accuracy of the replacement clamp 206 during installation, but also effectively withstands the lateral shear force generated during clamping.

[0034] To enable quick locking and disassembly of the replacement clamping plate 206, threaded through holes 211 connecting to the internal sliding groove 212 are provided on the side wall of the mounting housing 204 and the outer side of the replacement clamping plate 206. The middle thread of the bolt 205 is threaded into the threaded through hole 211. After the replacement clamping plate 206 slides into the designated position inside the mounting housing 204, the bolt 205 is tightened. The end of the bolt 205 passes through the threaded through hole 211 and is tightly threaded into the threaded through hole 211 on the side wall of the replacement clamping plate 206, thereby firmly locking the replacement clamping plate 206 inside the mounting housing 204. When welding is required for machinery of different sizes, the operator only needs to loosen the bolt 205 to release the lock on the replacement clamping plate 206 and pull out the replacement clamping plate 206. Then, a replacement clamping plate 206 of the appropriate specification is installed and the bolt 205 is tightened again, thereby achieving the purpose of quickly adjusting the clamping range of the fixture.

[0035] In a preferred embodiment, two extraction heads 306 are provided. The two extraction heads 306 are fixedly connected to the top left and right sides of the inner wall of the fixed frame 1, respectively. The air inlet of the extraction head 306 faces the center inside the fixed frame 1. The input end of the three-way pipe 305 is connected to the collection shell 303, and the two output ends of the three-way pipe 305 are connected to the two extraction heads 306 respectively. The distributed top extraction layout can effectively cover the space above the welding area. By utilizing the characteristic of hot air rising, it can ensure that the welding fumes can be quickly captured and merged into the pipeline system.

[0036] As another preferred embodiment, the inner wall of the collection shell 303 is provided with a slide rail 307, and there are two filter plates 304. Both filter plates 304 are slidably connected to the inside of the collection shell 303 through the slide rail 307. The sliding fit structure allows the operator to easily pull out the filter plate 304 for cleaning or replacement when the filter plate 304 has absorbed a lot of smoke and dust impurities, thereby ensuring the continuous unobstructed airflow path and filtration effect.

[0037] In another preferred embodiment, the extraction fan 301 is fixedly installed on the outer wall of the fixed frame 1, and the connecting pipe 302 is a corrugated hose. One end of the connecting pipe 302 is connected to the collection shell 303, and the other end is connected to the extraction fan 301. Using a corrugated hose as a connector can effectively buffer the vibration generated when the extraction fan 301 is working, reduce the transmission of vibration to the collection shell 303 and the fixed frame 1, and prevent the stability of the clamping mechanism 2 in fixing the workpiece from being affected by vibration.

[0038] Working principle: When welding the machine, the machine to be processed is first placed on the convex plate 207 and support plate 201 on the bottom wall of the fixed frame 1. Then, the electric push rod 208 is started. The telescopic end of the electric push rod 208 drives the auxiliary clamping plate 209 to move. Since the bottom of the auxiliary clamping plate 209 is rotatably connected to the middle of the top wall of the convex plate 207 through the rotating shaft 210, the auxiliary clamping plate 209 rotates and opens and closes around the rotating shaft 210 as the center, thereby initially clamping and positioning the bottom of the machine to be processed, improving the stability of subsequent processing.

[0039] After the initial positioning is completed, the hydraulic push rod 203 is activated. The hydraulic push rod 203 drives the mounting shell 204 to move towards the center of the fixed frame 1. The mounting shell 204 drives the replacement clamp 206, which is locked inside the mounting shell 204, to move synchronously until the replacement clamp 206 presses against the side wall of the machine to be processed to complete the main fixation. If the machine parts are of different widths, the replacement clamp 206 can be unlocked by turning the bolt 205, and the replacement clamp 206 can be pulled out from the mounting shell 204 and replaced with a replacement clamp 206 of different specifications. The fitting can be completed by tightening the bolt 205 again.

[0040] During the welding process, the extraction fan 301 is activated simultaneously. The high-temperature fumes and suspended particles generated during welding rise under the action of thermal buoyancy and negative pressure and are drawn in by the extraction head 306 located at the top of the fixed frame 1. The fumes flow into the collection shell 303 through the three-way pipe 305. Inside the collection shell 303, the fumes pass through the filter plate 304. The filter plate 304 blocks and filters the impurities in the fumes. The purified airflow is discharged by the extraction fan 301 through the connecting pipe 302, which effectively reduces the diffusion of harmful fumes around the fixed frame 1 and improves the heat dissipation environment.

Claims

1. A high-efficiency mechanical welding auxiliary fixture, comprising: A fixed frame (1) is provided with a clamping mechanism (2) and a pulling mechanism (3) at its bottom end. The clamping mechanism (2) is characterized in that it includes a convex plate (207), the bottom of which is fixedly connected to the middle of the inner bottom wall of the fixed frame (1), and electric push rods (208) are rotatably connected to both ends of the top of the convex plate (207). An auxiliary clamping plate (209) is rotatably connected to the middle of the top wall of the convex plate (207) through a rotating shaft (210). The output end of the electric push rod (208) is rotatably connected to the auxiliary clamping plate (209). The inner bottom wall of the fixed frame (1) is fixedly connected to both ends of the support plate (201). The top of the support plate (201) is fixedly connected to two connecting plates (202). The opposite sides of the two connecting plates (202) are fixedly connected to hydraulic push rods (203). The output end of the hydraulic push rod (203) is fixedly connected to the mounting shell (204). The inner wall of the mounting shell (204) is slidably connected to a replacement clamping plate (206). The outer side of the mounting shell (204) is threadedly connected to a bolt (205).

2. The high-efficiency mechanical welding auxiliary fixture according to claim 1, characterized in that... The extraction mechanism (3) includes a collection shell (303), the rear side of which is fixedly connected to the bottom front side of the fixed frame (1). A filter plate (304) is slidably installed inside the collection shell (303). One end of the collection shell (303) is connected to a connecting pipe (302). The end of the connecting pipe (302) away from the collection shell (303) is connected to an extraction fan (301). The other end of the collection shell (303) is connected to a three-way pipe (305). The end of the three-way pipe (305) away from the collection shell (303) is connected to an extraction head (306).

3. The high-efficiency mechanical welding auxiliary fixture according to claim 1, characterized in that, The sidewall of the mounting shell (204) and the outer side of the replacement clamp (206) are provided with threaded through holes (211). The middle part of the bolt (205) is threaded into the threaded through hole (211), and the end of the bolt (205) is threaded into the sidewall of the replacement clamp (206). The inner wall of the mounting shell (204) is provided with a sliding groove (212), and one side of the replacement clamp (206) is slidably connected to the sliding groove (212).

4. The high-efficiency mechanical welding auxiliary fixture according to claim 1, characterized in that, There are two auxiliary clamps (209). The bottom of each auxiliary clamp (209) is fitted around the outer periphery of the rotating shaft (210), and the two auxiliary clamps (209) are symmetrically arranged about the axis of the rotating shaft (210).

5. The high-efficiency mechanical welding auxiliary fixture according to claim 2, characterized in that, The number of extraction heads (306) is two. The two extraction heads (306) are fixedly connected to the top of the left and right sides of the inner wall of the fixed frame (1) respectively on opposite sides. The air inlet of the extraction head (306) faces the center of the inside of the fixed frame (1).

6. The high-efficiency mechanical welding auxiliary fixture according to claim 2, characterized in that, The inner wall of the collection shell (303) is provided with two slide rails (307), and there are two filter plates (304), and the rear sides of the two filter plates (304) are slidably connected to the corresponding slide rails (307).

7. The high-efficiency mechanical welding auxiliary fixture according to claim 1, characterized in that, The support plate (201) is vertically fixed to the inner bottom wall of the fixed frame (1), and the connecting plate (202) is vertically fixed to the top of the support plate (201). The connecting plate (202) has an L-shaped structure.

8. The high-efficiency mechanical welding auxiliary fixture according to claim 2, characterized in that, The bottom of the extraction fan (301) is fixedly installed on the left side of the fixed frame (1), and the connecting pipe (302) is a corrugated flexible hose.

9. A high-efficiency mechanical welding auxiliary fixture according to claim 2, characterized in that, The input end of the three-way tube (305) is connected to the collection shell (303), and the two output ends of the three-way tube (305) are respectively connected to the two extraction heads (306).

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