Bending device for plasma tool bit

Abstract

The utility model discloses a bending device for a plasma tool bit. The bending device comprises a bottom plate, a bending assembly and a limiting assembly, wherein the bending assembly and the limiting assembly are installed on the bottom plate. The bending assembly comprises a driving handle, a lower pressing table and an upper pressing block. And an arc-shaped processing table top is arranged on the lower pressing table. The upper pressing block is rotationally connected to the lower pressing table and can be driven by the driving handle to rotate. A bending face matched with the lower pressing table is arranged at the bottom of the upper pressing block. The limiting assembly comprises a positioning pin and two adjusting blocks. By arranging the adjusting block capable of being adjusted in a sliding mode and being matched with the positioning pin, the plasma tool bit can change the bending angle according to requirements, and universality is high. And meanwhile, the receding notch is formed in the lower pressing table, so that the bending part of the plasma tool bit is effectively prevented from being crushed when the upper pressing block and the lower pressing table are matched to bend the plasma tool bit, and the bending angle precision is improved.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a bending device for plasma cutting heads. Background Technology

[0002] In existing techniques, non-endoscopic surgical procedures for cutting, ablation, and coagulation of intervertebral soft tissue require the use of disposable plasma cutting tips with a treatment channel to treat the lesion. Due to the narrow channel and limited working area of ​​the cutting tip, surgical efficiency is reduced and the difficulty of the procedure is increased. Therefore, the cutting tip needs to be bent to expand its working area.

[0003] Chinese Patent Publication No. CN215688375U discloses a bending device for a plasma surgical blade tip, relating to the field of medical device technology. This utility model includes a bending groove and a bending stop; the bending stop is fixed to one end of the bending groove and has a through hole; the through hole has a clearance fit with the outer surface of the plasma surgical blade handle; and the side of the bending groove is provided with a retaining rib along the radial bending direction of the groove.

[0004] The aforementioned patent uses a curved groove and a bending stop to ensure consistent bending angles. However, during the manual bending of the plasma cutter head, the bending force is applied to the end of the plasma cutter head. Users are prone to applying excessive force, causing secondary bending of the plasma cutter head and damaging it.

[0005] In addition, some bending devices use a handle in conjunction with two pressure blocks to perform bending operations. The handle is mounted on the base plate via a connector, and on the left side of the handle are two pressure blocks that can interlock vertically. The front end of the handle is connected to the upper pressure block by a screw. When the handle moves, it causes the pressure blocks to move up and down, and through the transmission of force, the cutting head is bent.

[0006] This device has the following drawbacks: 1. The pressure block lacks a limiting mechanism, making it impossible to control the force applied and thus accurately control the bending angle. 2. The pressure block and the handle are not on the same center line, resulting in uneven force on the cutter head during bending. 3. The cutter head is placed too close to the handle and on the same water surface, creating a confined space that hinders operation. 4. The lack of a limiting mechanism for the cutter head makes it prone to misalignment when placed in the pressure block. Utility Model Content

[0007] To overcome the shortcomings of the existing technology, this utility model provides a bending device for plasma cutter heads, which solves the technical problems of existing bending devices, such as the difficulty in controlling the pressure applied during bending and the easy positional displacement of the plasma cutter head during the bending process.

[0008] To achieve the above objectives, the specific technical solution of this utility model is as follows:

[0009] A bending device for a plasma cutting head includes a base plate, and a bending assembly and a limiting assembly mounted on the base plate. The bending assembly includes a drive handle, a lower pressure table, and an upper pressure block. The lower pressure table has an arc-shaped processing surface. The upper pressure block is rotatably connected to the lower pressure table and can rotate under the drive of the drive handle. The bottom of the upper pressure block has a bending surface that mates with the lower pressure table.

[0010] The limiting assembly includes a positioning pin and two adjusting blocks. The two adjusting blocks are slidably connected to both sides of the lower pressure table and can be locked by screws when slid to a specified height. The limiting groove is formed on the adjusting block. The positioning pin is fixed to the processing table surface of the lower pressure block.

[0011] Furthermore, the limiting component also includes a limiting stop. The limiting stop is installed on one side of the pressing block and is directly opposite the limiting groove on the corresponding side adjusting block.

[0012] Furthermore, the drive handle is mounted on the central axis of the upper pressure block.

[0013] Furthermore, a clearance groove is provided on the processing table surface of the pressing block.

[0014] Furthermore, the two sides of the opening of the limiting groove are provided with guide slopes.

[0015] Furthermore, clearance grooves that cooperate with the adjusting block are provided on both sides of the upper pressure block.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. This utility model, by setting an adjustable block that can slide and adjust, and in conjunction with a positioning pin, allows the plasma cutter head to change its bending angle according to requirements, making it highly versatile. Simultaneously, by creating a clearance groove on the lower pressure table, it effectively prevents damage to the bending portion of the plasma cutter head during bending by the upper and lower pressure blocks, thus improving the accuracy of the bending angle.

[0018] 2. By installing the drive handle on the central axis of the upper pressure block, this utility model ensures that when the operator applies pressure to the drive handle, the applied pressure can be evenly transmitted to the plasma cutter head through the upper pressure block, thereby avoiding damage to the plasma cutter head due to uneven force. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram showing the relative positions of the lower pressure platform and the upper pressure block in this utility model;

[0021] Figure 3 This is a schematic diagram of the limiting component in this utility model. Figure 1 (Enlarged view of part A in the middle)

[0022] Figure 4 This is a schematic diagram of the structure of the adjusting block in this utility model. Figure 2 (Enlarged view of part B in the middle section).

[0023] Reference numerals: 100, plasma cutter head; 1, base plate; 2, drive handle; 3, lower pressure table; 4, upper pressure block; 5, limiting component; 6, adjusting block; 6-1, limiting groove; 6-2, guide slope; 7, positioning pin; 8, limiting stop; 9, clearance groove. Detailed Implementation

[0024] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper side", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] like Figure 1 and 2 As shown, a bending device for a plasma cutter head includes a base plate 1, and a bending assembly and a limiting assembly 5 mounted on the base plate 1. The bending assembly includes a drive handle 2, a lower pressure table 3, and an upper pressure block 4. The lower pressure table 3 has an arc-shaped processing surface at its top. One end of the upper pressure block 4 is rotatably connected to the lower pressure table 3 via a rotating pin. The bottom of the upper pressure block 4 has an arc-shaped bending surface that mates with the lower pressure table 3.

[0027] The drive handle 2 is installed on the outer end of the upper pressure block 4 and is used to drive the upper pressure block 4 to press down, thereby cooperating with the lower pressure block to realize the bending operation of the plasma cutter head 100. The limiting component 5 is installed on the lower pressure table 3 and is used to limit the position of the plasma cutter head 100 placed on the lower pressure table 3.

[0028] In this embodiment, the drive handle 2 is mounted on the central axis of the upper pressure block 4, so that when the operator applies pressure to the drive handle 2, the applied pressure can be evenly transmitted to the plasma cutter head 100 through the upper pressure block 4.

[0029] like Figure 3As shown, the limiting component 5 includes adjusting blocks 6 and positioning pins 7. There are two adjusting blocks 6. The two adjusting blocks 6 are slidably connected to both sides of the lower pressure table 3 and can be locked with screws when slid to a specified height. Each of the two adjusting blocks 6 has a limiting groove 6-1 on its top that mates with the plasma cutter head 100. The plasma cutter head 100 passes through the two limiting grooves 6-1 sequentially, effectively preventing the position of the plasma cutter head 100 from shifting during processing. The positioning pin 7 is fixed to the processing table surface of the lower pressure block and is used to limit the extreme position of the upper pressure block 4 when it is pressed down, preventing excessive pressure applied by the operator to the upper pressure block 4, which could damage the plasma cutter head 100. During processing, the operator can replace the positioning pin 7 with one of corresponding height dimensions according to the required bending arc of the plasma cutter head 100. By controlling the relative position of the upper pressure block 4 and the plasma cutter head 100 when pressed down to the extreme position, the bending arc of the plasma cutter head 100 can be controlled.

[0030] like Figure 4 As shown, in this embodiment, guide slopes 6-2 are provided on both sides of the opening of the limiting groove 6-1. During the installation of the plasma cutting head 100, the plasma cutting head 100 can enter the limiting groove 6-1 under the guidance of the guide slopes 6-2.

[0031] Furthermore, a limit stop 8 is provided on one side of the pressure block. The limit stop 8 is directly opposite the limit groove 6-1 on the corresponding side adjustment block 6, and is used to limit the position of the plasma cutter head 100 passing through the two limit grooves 6-1, so as to ensure that the bent part of the plasma cutter head 100 is located on the pressure table 3.

[0032] In this embodiment, a clearance slot 9 is provided on the processing table surface of the lower pressure block to provide clearance space for the bent portion when the plasma cutter head 100 is bent by the upper pressure block 4.

[0033] In addition, in this embodiment, clearance grooves are provided on both sides of the upper pressure block 4 to cooperate with the two adjustment blocks 6, so as to avoid interference between the upper pressure block 4 and the adjustment blocks 6 when it is pressed down, which would damage the adjustment blocks 6.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A bending device for a plasma cutter head, comprising a base plate (1), a bending assembly, characterized in that: It also includes a limiting component (5); The bending assembly includes a drive handle (2), a lower pressure table (3), and an upper pressure block (4); the lower pressure table (3) is provided with an arc-shaped processing table surface; the upper pressure block (4) is rotatably connected to the lower pressure table (3) and can rotate under the drive of the drive handle (2); the bottom of the upper pressure block (4) is provided with a bending surface that cooperates with the lower pressure table (3); The limiting component (5) includes a positioning pin (7) and two adjusting blocks (6); the two adjusting blocks (6) are slidably connected to both sides of the lower pressure table (3) and can be locked when slid to a specified height; a limiting groove (6-1) is provided on the adjusting block (6); the positioning pin (7) is fixed on the processing table surface of the lower pressure block.

2. A bending device for a plasma tip as defined in claim 1, wherein: The limiting component (5) also includes a limiting block (8); the limiting block (8) is installed on one side of the pressing block and is directly opposite the limiting groove (6-1) on the corresponding side adjusting block (6).

3. The bending device for a plasma tip of claim 1, wherein: The drive handle (2) is mounted on the central axis of the upper pressure block (4).

4. A bending device for a plasma cutting head according to claim 1, characterized in that: The processing table surface of the pressing block is provided with a clearance groove (9).

5. The bending device for a plasma tip of claim 1, wherein: The limiting groove (6-1) has guide slopes (6-2) on both sides of the groove opening.

6. The bending device for a plasma tip of claim 1, wherein: The upper pressure block (4) has clearance grooves on both sides that cooperate with the adjusting block (6).

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