Spray pipe electrode trimming device

Abstract

The utility model relates to the field of spray pipe welding, disclose a kind of spray pipe electrode pruning device, comprising: first block and second block;The first block and the second block are oppositely arranged, for the first block and the second block between forming passage;Pruning part is provided on the passage, for trimming electrode, wherein, the first block and second block end between being equipped with limiting portion;The first block and second block outer wall between being provided with movable part, by oppositely arranged first block, second block special passage is formed by enclosing, avoid assembly interference, reduce trimming gap, reduce weld stress cracking and pipeline leakage risk;Setting limiting portion reinforcing limiting passage, prevent the deformation of passage during trimming, guarantee trimming accuracy, while additional movable part realizes passage quick opening and closing, increase chip space, promptly discharge trimming chip, avoid chip residual storage to cause pipeline pollution, can realize weld continuous batch trimming.

Description

Technical Field

[0001] This utility model relates to the field of spray pipe welding, specifically to a spray pipe welding rod trimming device. Background Technology

[0002] PFA welding rods and PFA spray pipes are related by the thermal fusion of base material and filler material. The materials of the two must be compatible. During hot air welding, the high temperature melts the spray pipe bevel and the welding rod at the same time. The molten materials wet each other and the molecules dissolve. After cooling, they form an integral weld to achieve sealing and pressure bearing. like Figure 4 As shown in the prior art, a welding point 15 is provided between the pipe body 13 and the insertion pipe 14. PFA solder 16 is placed on the welding point 15, and the pipe body 13 and the insertion pipe 14 are welded to the fitting part of the pipe by hot air welding, as shown by the dotted line in the figure. The outer diameter of the existing PFA solder 16 is larger than the pipe diameter of the pipe body 13, which causes the outer diameter of the solder pile to exceed the pipe diameter of the pipe body 13 after welding. The weld needs to be trimmed manually. However, manual trimming is difficult to guarantee roundness, resulting in poor consistency of product dimensions and easy assembly interference. The notch formed by trimming is easy to induce stress cracking and cause pipeline leakage. In addition, the uneven tool marks are easy to accumulate particles, which poses a risk of contamination. This process depends on manual operation, the product quality is unstable, and it is difficult to achieve standardized mass production.

[0003] Therefore, providing a welding electrode trimming device that can precisely control the size of welding electrodes and achieve batch trimming has become an urgent problem to be solved in this field. Utility Model Content

[0004] The purpose of this invention is to solve the problems in the prior art where the notches formed by trimming are prone to stress cracking, causing pipeline leakage. In addition, the uneven knife marks are prone to accumulating particles, creating a risk of pollution. Furthermore, this process relies on manual operation, resulting in unstable product quality and difficulty in achieving standardized mass production.

[0005] To address the aforementioned problems, this utility model discloses a spray pipe welding rod trimming device. Includes: the first piece and the second piece; The first block and the second block are arranged opposite to each other to form a channel between the first block and the second block; The channel is equipped with a trimming section for trimming welding rods, wherein... A limiting part is provided between the ends of the first block and the second block to reinforce the channel; A movable part is provided between the outer walls of the first and second blocks for quickly opening and closing the channel to remove chips.

[0006] The advantages of this application compared to the prior art by adopting the above technical solution are as follows: the dedicated channel is formed by the relatively set first and second blocks, avoiding assembly interference, reducing trimming gaps, and lowering the risk of weld stress cracking and pipeline leakage; the limiting part is set to reinforce the limiting channel, prevent channel deformation during trimming, and ensure trimming accuracy; at the same time, the addition of the movable part enables the channel to open and close quickly, increases the chip removal space, and timely removes trimming chips, avoiding chip residue accumulation that causes pipeline pollution. It can realize continuous batch trimming of welds, get rid of manual dependence, meet the needs of standardized production, and the overall structure is simple and highly practical.

[0007] According to another specific embodiment of the present invention, the channel is a guide cavity, which is disposed between the first block and the second block.

[0008] According to another specific embodiment of the present invention, the guide cavity is formed by the semi-cavity between the second block and the first block.

[0009] According to another specific embodiment of the present invention, the trimming part includes a blade and a fixing member, and the blade is detachably mounted on the guide cavity by the fixing member.

[0010] According to another specific embodiment of the present invention, the limiting part includes a movable part and a mounting part. The movable part is disposed at the end of the first block or the second block, and the mounting part is disposed at a position opposite to the movable part. The movable part and the mounting part are connected in a limiting manner to reinforce the guide cavity formed by the enclosing of the semi-cavities.

[0011] According to another specific embodiment of the present invention, the blade includes a groove and a trimming surface. The groove is disposed on one side of the blade, and the blade is connected to the fixing member through the groove. The trimming surface is disposed on the side of the blade away from the groove, and the trimming surface is located on the guide cavity for the welding rod to be trimmed by the trimming surface.

[0012] According to another specific embodiment of the present invention, the guide cavity further includes a chip discharge port, which is disposed on the first block and the second block and is used for trimming welding rods and discharging chips.

[0013] According to another specific embodiment of the present invention, the trimming surface is a shearing blade or a grinding blade.

[0014] According to another specific embodiment of the present invention, the chip discharge port is formed by the second block and the first block semi-open cavity together.

[0015] According to another specific embodiment of the present invention, the movable part includes a connector and a locking member. The side of the connector is disposed on the outer wall of the first block and the second block, and the end of the connector is fixed to the outer wall of the first block and the second block by the locking member. Attached Figure Description

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Figure 1 This is a three-dimensional structural diagram of a spray pipe welding rod trimming device provided by this utility model; Figure 2 This is a side view of a spray pipe welding rod trimming device provided by this utility model; Figure 3 This is a top view schematic diagram of a spray pipe welding rod trimming device provided by this utility model; Figure 4 This is a schematic diagram of the structure of the welding joint between the existing spray pipe body and the insertion pipe of this utility model.

[0017] Figure label: 1. First piece; 2. Second piece; 3. Flexible hinge; 4. Blade; 5. Groove; 6. Bolt A; 7. First bolt; 8. Hook and loop; 9. Second bolt; 10. Side opening; 11. Guide cavity; 12. Trimmed surface; 13. Tube body; 14. Insert pipe; 15. Weld joint; 16. PFA solder. Detailed Implementation

[0018] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0019] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the 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 the utility model.

[0020] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0021] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided with," "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0022] like Figures 1 to 3 As shown, this utility model discloses a spray pipe welding rod trimming device. The trimming device includes: a first block 1 and a second block 2; the first block 1 and the second block 2 are arranged opposite each other to form a channel inside the first block 1 and the second block 2; a trimming part is provided above the channel to allow excess PFA welding material 16 of the spray pipe insertion weld to extend into the interior of the channel, and then, by rotating, the excess welding material can be aligned with the trimming part for neat trimming, ensuring that the pipe diameter is round and the size is uniform after trimming. A limiting part is provided between the ends of the first block 1 and the second block 2 to reinforce the channel formed by the enclosed interior of the first block 1 and the second block 2; a movable part is provided between the outer walls of the first block 1 and the second block 2 to quickly open the channel formed by the enclosed interior of the first block 1 and the second block 2, thereby allowing the trimming debris generated inside the channel to be discharged.

[0023] In other words, the first block 1 and the second block 2 are set relative to each other, such as... Figure 1As shown, the first block 1 and the second block 2 each have a semi-cavity inside. When the two blocks 1 and 2 are arranged opposite each other and enclosed together, the two semi-cavities will enclose a channel. It should be noted that this channel is a guide cavity 11. The surface of the second block 2 is provided with a trimming part. The trimming part is located above the guide cavity 11 on the side closer to the first block 1. The upper surface ends of the first block 1 and the second block 2 are provided with limiting parts. The limiting parts can reinforce the guide cavity 11 formed after enclosing, and prevent the guide cavity 11 from deforming during the trimming process, which would cause the trimming size deviation and insufficient roundness of the spray pipe weld. The bottom of the first block 1 and the second block 2 are provided with movable parts, so as to control the enclosing of the first block 1 and the second block 2.

[0024] During operation, the excess PFA solder 16 protruding from the splice joint of the spray pipe is placed into the guide cavity 11. Then, the first block 1 and the second block 2 are rotated to drive the shearing part to trim the excess solder placed in the guide cavity 11. With the help of the shearing part, the outer diameter of the spray pipe weld can be uniformly trimmed, the pipe opening roundness can be consistent, and the problem of unevenness caused by manual trimming can be solved. During the trimming operation, the debris and residue generated by the welding trimming will continuously accumulate in the guide cavity 11. When the amount of debris accumulated in the guide cavity 11 is too much, it will occupy the trimming space, interfere with the trimming positioning, and also affect the cutting accuracy of the trimming part, and even cause trimming jamming and pipe diameter trimming size deviation. At this time, the locking and limiting effect of the limiting part on the first block 1 and the second block 2 is released. After the limiting constraint is released, the moving part can be operated to make the two sets of surrounding and oppositely arranged first block 1 and second block 2 move in opposite directions. The two sets of half cavities open to each other. After the half cavities are completely separated, the trimming debris accumulated in the guide cavity 11 can fall and be discharged directly and quickly, avoiding debris residue adhering to the surface of the spray pipe weld and causing pollution. There is no need to dig and clean through the narrow cleaning channel, saving the tedious cleaning steps. The device relies on the first block 1 and the second block 2 to form a closed processing cavity. The shearing part uses the rotation of the first block 1 and the second block 2 to neatly trim excess welding material from the spray pipe, ensuring that the outer diameter of each spray pipe weld is uniform and the roundness meets the standard after trimming. The limiting part is used to lock the first block 1 and the second block 2 to ensure the overall structure is stable during the trimming operation, prevent the cavity from shifting and opening during the cutting process, and eliminate problems such as trimming size deviation and non-round pipe ends. The moving part serves as the driving and actuating structure to realize the opening and closing action of the first block 1 and the second block 2. During the trimming process, the limiting part is locked. The first block 1 and the second block 2 keep the half-cavity closed, maintain the stability of the internal processing space of the guide cavity 11, ensure the stability of the trimming accuracy of the spray pipe weld, and avoid subsequent assembly interference, stress cracking and leakage. When the debris in the inner cavity accumulates to a certain extent, the half-cavity is directly separated by the movable part after the limit is released, so as to realize the large opening of the inner cavity for slag discharge, quickly clean the trimming residue, and prevent the residue from accumulating and causing pipeline pollution. After cleaning, the movable part is driven again to make the first block 1 and the second block 2 close and reset, and then the limit part is locked and fixed again, so that the spray pipe weld batch trimming operation can be put into operation again.

[0025] For details, see Figure 1 As shown, in this embodiment, the trimming part includes a blade 4 and a fixing member. The blade 4 is detachably mounted on the guide cavity 11 via the fixing member. The blade 4 includes a groove 5 and a trimming surface 12. The groove 5 is U-shaped and can be arranged on any upper surface of the first block 1 or the second block 2. The fixing member is a bolt A6. The bottom of the bolt A6 can pass through the groove 5 and be threadedly connected to the corresponding surface of the first block 1 or the second block 2. During the tightening process, a downward clamping force is applied to the blade 4 through the top of the bolt A6, so that the blade 4 is pressed and fixed to the upper surface of the first block 1 or the second block 2. The trimming surface 12 is provided on the side of the blade 4 away from the groove 5 and is located on the chip discharge port. Figure 3 As shown; The chip discharge port is located on the first block 1 and the second block 2. The chip discharge port is formed by the enclosed opening of the upper half cavity of the second block 2 and the first block 1. When the spray pipe and the excess solder on the outside extend into the guide cavity 11 and rotate with the guide cavity 11, the protruding solder can be trimmed by the trimming surface 12. The chips generated by trimming can be discharged to the chip discharge port through the half cavity. The U-shaped groove 5 has a through hole for the bolt A6 to pass through. The diameter of the through hole is larger than the outer diameter of the bolt A6 screw, so that the bolt A6 can be finely adjusted within the through hole range to adjust the installation position of the blade 4. The blade 4 remains fixed. The guide cavity 11 drives the spray pipe to rotate. The trimming is completed by the relative movement between the protruding solder of the spray pipe and the trimming surface 12. An anti-slip pad can be set between the bolt A6 and the blade 4. The pad is sleeved on the top outer wall of the bolt A6 (not shown in the figure). After the bolt A6 is tightened, the friction of the contact surface is increased, reducing the risk of the blade 4 loosening or shifting due to equipment vibration. The trimming surface 12 is a shearing blade or a grinding blade, not shown in the figure. The effective working diameter of the trimming surface 12 matches the standard spray pipe diameter and is smaller than the outer diameter of the protruding solder before trimming. The trimming surface 12 can be installed on the blade 4 in a detachable assembly manner. When the trimming surface 12 is worn, the trimming surface 12 can be replaced separately without disassembling the entire blade 4. During assembly, place the U-shaped groove 5 on one side of the blade 4 onto the selected upper surface of the first block 1 or the second block 2, so that the bolt A6 passes through the groove 5 and is screwed into the threaded part of the first block 1 or the second block 2. As the bolt A6 is tightened, the top of the bolt A6 presses down on the blade 4, pressing and positioning the trimming part as a whole, so that the trimming surface 12 on the blade 4 is aligned and arranged at the chip discharge port. During operation, the end of the spray pipe with excess solder is sent into the guide cavity 11. The guide cavity 11 drives the spray pipe to rotate. The rotating excess solder contacts the trimming surface 12, and the trimming surface 12 completes the trimming of the excess solder. During the trimming process, some of the solder debris that falls off is directly discharged out through the chip discharge port, and the other part falls into the semi-cavity formed by the first block 1 and the second block 2. When it is necessary to adjust the trimming position or inspect and replace the trimming surface 12, loosen the bolt A6, and the blade 4 can be removed as a whole for position adjustment or replacement of parts.

[0026] In this design, the blade 4 is detachably installed by being tightened by bolt A6. It can be installed on either the first piece 1 or the second piece 2, offering flexible installation options and simple disassembly and assembly. The U-shaped groove 5, combined with bolt A6 for tightening and fixing, and the fine-tuning capability of the through hole, allows for flexible adjustment of the trimming position, ensuring alignment between the trimming surface 12 and the chip discharge port. Excess solder is neatly trimmed by the relative rotation of the spray pipe and the trimming surface 12. The resulting chips are discharged into the semi-cavity through the chip discharge port, preventing chip accumulation in the trimming area from affecting normal operation. The overall structure is simple. With the addition of shims, the equipment vibration can be effectively resisted, reducing the displacement of the trimming part and ensuring the roundness and dimensional accuracy of the spray pipe weld trimming. The trimming surface 12 can be replaced independently, reducing maintenance costs after component wear. The limiting part includes a movable part and a mounting part. The movable part is located at the end of the first block 1 or the second block 2. The mounting part is located at the opposite position of the movable part. The movable part and the mounting part are connected in a limiting manner to reinforce the guide cavity 11 formed by the enclosing of the semi-cavities. The moving parts include the first bolt 7 and the latch 8, such as Figure 1As shown, the first bolt 7 can be threaded onto either end of the first block 1 and the second block 2. A latch 8 is movably sleeved on the bolt shank at the bottom of the first bolt 7. The mounting component includes a second bolt 9, which is arranged opposite to the first bolt 7. The second bolt 9 is threaded onto the ends of the second block 2 and the first block 1. During operation, the latch 8 is rotated, causing the latch 8 to rotate and feed along the outer wall of the first bolt 7. This causes the side opening 10 at the end of the first bolt 7 to engage with the bolt on the outer wall of the second bolt 9, thus completing the limiting and constraining the guide cavity 11 formed after the first block 1 and the second block 2 are closed. This prevents deformation of the cavity and deviation of the trimming size when trimming the spray pipe welding material, ensuring processing accuracy.

[0027] Optionally, the second bolt 9 can be installed in interchangeable positions. This solution preferably uses the side opening 10 and the second bolt 9 to be bolted together for limiting, but it is not limited to this. It can also be replaced by a latch lock, a pin insertion, an eccentric cam pressing, a clamp clamping, a hook and loop connection, and other effective limiting methods. Furthermore, the side opening 10 is a slot, bayonet, or notch structure, which can be used for single-point or multi-point snap-fit; the buckle 8 is a knob nut, and anti-slip texture can be set on the outer periphery; the first bolt 7 and the second bolt 9 are threaded detachable connections, and by adjusting the thread screwing depth, the degree of enclosure and locking of the first block 1 and the second block 2 can be changed, which can be adapted to the welding trimming operation of different specifications of spray pipes.

[0028] During assembly, the first bolt 7 is screwed onto the end of the first block 1 or the second block 2, and the latch 8 is movably fitted onto the bottom bolt shank of the first bolt 7. Then, the second bolt 9 is screwed onto the end opposite to the first bolt 7. The first block 1 and the second block 2 are aligned to form a guide cavity 11. The latch 8 is rotated to push the first bolt 7, so that the side opening 10 at the end of the first bolt 7 engages with the outer wall bolt of the second bolt 9, thus completing the locking. During the spray pipe welding trimming operation, the limiting constraint can prevent the first block 1 and the second block 2 from opening and shifting, and prevent the cavity from deforming and squeezing the spray pipe opening. The latch 8 is rotated in the opposite direction to release the limiting constraint by disengaging the side opening 10 from the second bolt 9, thus separating the first block 1 and the second block 2. This process is preferably achieved by using a latch bolt, but other equivalent limiting structures mentioned above can also be used to achieve the same constraint effect. The first bolt 7 and the second bolt 9 are detachable and interchangeable in installation position, making operation convenient; they can constrain the guide cavity 11 formed by the first block 1 and the second block 2 to prevent the cavity from opening and deforming, and ensure the accuracy of the spray pipe weld trimming; the limiting structure has multiple equivalent replacement forms.

[0029] like Figure 1 and Figure 2 As shown, the movable part includes a connector and a locking member. The connector is disposed on both sides of the bottom outer wall of the first block 1 and the second block 2, and the ends of the connector are fixed to the outer wall of the first block 1 and the second block 2 by the locking member. Furthermore, the connector is arranged across the bottom outer side of the first block 1 and the second block 2. The connector can deform or swing relative to the opening and closing action of the first block 1 and the second block 2, thereby realizing the movable connection between the first block 1 and the second block 2, so that the first block 1 and the second block 2 can open, close and enclose around the connector. Optionally, the connector can be any one of the following: elastic hinge 3, flexible connecting piece, hinged joint; the locking part can be fasteners such as screws, bolts, and rivets to achieve detachable or non-detachable fixing of the end of the connector to the outer wall of the first block 1 and the second block 2. Preferably, the connector is detachably assembled with the first block 1 and the second block 2. The connector can be completely removed by loosening the locking part, which makes it easy to replace connectors with different rigidities and sizes, thereby adjusting the opening and closing tightness of the first block 1 and the second block 2 to meet the trimming and chip removal needs of spray pipes with different diameters. Alternatively, the connector and the first block 1 and the second block 2 can also adopt an integral molding structure, without the need for additional locking parts, and can still achieve the movable hinge between the two. This method is an equivalent replacement form of the connector.

[0030] During assembly, the two ends of the connector are respectively attached to the bottom outer walls of the first block 1 and the second block 2, and the locking mechanism is used to lock and fix the two ends of the connector to the corresponding outer walls. During use, the first block 1 and the second block 2 can open or close together using the connector, forming a cavity for the end of the spray pipe to pass through. The connector provides bottom connection and constraint to the first block 1 and the second block 2, preventing them from completely separating and falling off. Together with the upper limiting structure, this ensures the stability of the closed state. (Spray pipe...) During batch trimming operations, the upper limit is released, and the first block 1 and the second block 2 are opened apart using the connector as the fulcrum. This simultaneously expands the effective diameter of the chip discharge port, allowing the weld debris accumulated inside the semi-cavity to be quickly discharged. This prevents debris buildup from clogging the chip discharge channel and causing residual contamination of the pipeline, thus meeting the requirements for continuous and standardized trimming of the spray pipe welds. After chip removal is completed, the first block 1 and the second block 2 are put back together and the upper limit is locked again to continue processing. When the connector suffers fatigue damage, the locking part can be removed to replace and maintain the connector. The first block 1 and the second block 2 are movably connected at the bottom by a connector, and the end is fixed by a locking component, allowing the first block 1 and the second block 2 to open and close easily while preventing them from completely separating. The connector is available in various forms, including hinges and elastic connections, providing a wide protection range. The connector is detachable and replaceable, making maintenance convenient. In conjunction with the upper limiting structure, the first block 1 and the second block 2 are constrained from the bottom and the end respectively, further improving the structural stability of the enclosed cavity during operation. When batch trimming the weld seams of the spray pipes, the first block 1 and the second block 2 are opened by the connector, and the trimming surface 12 is separated and the diameter of the chip discharge port is enlarged, increasing the chip flow channel and enabling rapid chip removal. It is less prone to jamming and is suitable for large-scale standardized trimming operations of spray pipes. Optionally, the opening angles of the first block 1 and the second block 2 can be adjusted according to the chip discharge requirements. The larger the opening angle, the larger the chip discharge port diameter, and the higher the chip discharge efficiency.

[0031] Using the above technical solution, the first block 1 and the second block 2 are set up to form a shaped channel guide cavity 11. With the help of the trimming part, the excess PFA solder 16 at the splice joint of the spray pipe is trimmed in a regular manner. This can accurately unify the outer diameter of the spray pipe weld and ensure the uniformity of the pipe opening roundness. It completely solves the defects of traditional manual trimming, such as large dimensional deviation, poor roundness, and low consistency. It effectively avoids assembly interference, stress cracking and leakage, and debris residue pollution. At the same time, a limiting part is provided to effectively prevent the channel guide cavity 11 from deforming and shifting during the trimming process, ensuring processing stability. The bottom movable part can open and close the first block 1 and the second block 2 to expand the chip discharge port diameter, quickly clean the solder debris, and avoid material blockage affecting the operation. It can realize continuous standardized batch trimming of the spray pipe weld, effectively improve the operation efficiency, and has strong structural adaptability and convenient maintenance.

[0032] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A spray pipe welding rod trimming device, characterized in that, include: The first piece and the second piece; The first block and the second block are arranged opposite to each other to form a channel between the first block and the second block; The channel is equipped with a trimming section for trimming welding rods, wherein... A limiting part is provided between the ends of the first block and the second block to reinforce the channel; A movable part is provided between the outer walls of the first and second blocks for quickly opening and closing the channel to remove chips.

2. The spray pipe welding rod trimming device according to claim 1, characterized in that, The channel is a guide cavity, which is located between the first block and the second block.

3. The spray pipe welding rod trimming device according to claim 2, characterized in that, The guide cavity is formed by the semi-cavity between the second block and the first block.

4. The spray pipe welding rod trimming device according to claim 3, characterized in that, The trimming section includes a blade and a fixing member, wherein the blade is detachably mounted on the guide cavity via the fixing member.

5. The spray pipe welding rod trimming device according to claim 3, characterized in that, The limiting part includes a movable part and a mounting part. The movable part is located at the end of the first block or the second block, and the mounting part is located at a relative position to the movable part. The movable part and the mounting part are connected in a limiting manner to reinforce the guide cavity formed by the enclosing of the semi-cavities.

6. The spray pipe welding rod trimming device according to claim 4, characterized in that, The blade includes a groove and a trimming surface. The groove is located on one side of the blade, and the blade is connected to the fixing member through the groove. The trimming surface is located on the side of the blade away from the groove and is located on the guide cavity for the welding rod to be trimmed by the trimming surface.

7. The spray pipe welding rod trimming device according to claim 4, characterized in that, The guide cavity also includes a chip removal port, which is located on the first block and the second block, and is used to trim welding rods and remove chips.

8. The spray pipe welding rod trimming device according to claim 6, characterized in that, The trimming surface is a shearing blade or a grinding blade.

9. The spray pipe welding rod trimming device according to claim 7, characterized in that, The chip discharge port is formed by the second block and the first block semi-cavity opening.

10. The spray pipe welding electrode trimming device according to claim 1, characterized in that, The movable part includes a connector and a locking member. The side of the connector is disposed on the outer wall of the first block and the second block, and the end of the connector is fixed to the outer wall of the first block and the second block by the locking member.

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