A pipe orifice chamfering device for evaporator processing

Abstract

The utility model discloses a kind of pipe orifice chamfer finishing device for evaporator processing, it is related to evaporating pipe chamfer technical field.The utility model includes chamfering cone and threaded pipe, chamfering cone is combined by screwing on the outside of threaded pipe, threaded pipe one end is equipped with bracing pipe end cap, the other end is equipped with screwing handle, chamfering cone is equipped with screwing grip sleeve, bracing pipe end cap is supported when operating and is inserted into pipe orifice, rotates screwing grip sleeve and drives chamfering cone to feed to finish pipe orifice.The utility model is combined by screwing by inside and outside double stable support and threaded precision feed, realize the high accuracy, high consistency and convenient operation of evaporating pipe pipe orifice chamfer processing, effectively solve the problem of uneven quality, low efficiency of hand chamfer.

Description

Technical Field

[0001] This utility model belongs to the field of evaporator tube chamfering technology, and in particular relates to a tube end chamfering and trimming device for evaporator processing. Background Technology

[0002] In evaporator installation, chamfering the ends of copper evaporator tubes is a necessary pretreatment step to facilitate subsequent flaring or connection. Traditional methods often rely on operators using simple files or ordinary chamfering tools based on experience, which has significant drawbacks. Due to the lack of an effective axial positioning and depth control mechanism, manual operation is prone to inconsistent chamfering angles and depths, affecting the regularity of the tube ends and the quality of the sealing surface. For slender or inconveniently located tube ends, hand tools are difficult to apply force and align stably, making it difficult to guarantee processing accuracy and resulting in low efficiency. In addition, ordinary chamfering tools are prone to radial displacement when rotating, which may damage the tube wall or produce burrs. Existing methods are insufficient to meet the stable requirements for tube end chamfering quality and efficiency in the mass production of evaporators.

[0003] To address these issues, we provide a chamfering and trimming device for evaporator nozzles. Utility Model Content

[0004] The purpose of this utility model is to provide a chamfering and trimming device for evaporator tube processing. The chamfering cone with a truncated cone structure is screwed onto the outside of a threaded tube. Support caps and screwing handles are fixed at both ends of the threaded tube. The support caps are inserted into the evaporator tube opening of the evaporator. One hand holds the screwing handle, and the other hand holds the screwing grip of one end of the chamfering cone and rotates it, so that the chamfering cone trims the opening of the evaporator copper tube. The threaded tube and the support cap provide stable support, making the chamfer of the evaporator tube opening neat.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a chamfering and trimming device for evaporator processing, including a chamfering cone and a threaded tube. The chamfering cone has a truncated cone structure. One end of the threaded tube is fixed with a support tube end cap. The chamfering cone is threaded and sleeved on the outer side wall of the threaded tube. The end of the threaded tube away from the support tube end cap is fixed with a screw handle. The pointed end of the chamfering cone faces the support tube end cap. The outer side wall of the end of the chamfering cone near the screw handle is fixed with a screw grip sleeve.

[0006] A further feature of this invention is that an inner support rod is threadedly screwed onto the inner thread of the threaded tube, the inner support rod threaded through the screw handle, a top ring cap is fixed to one end of the inner support rod extending out of the support tube end cap, a rubber tube is sleeved on the outer side of the inner support rod, and rubber rings are integrally formed at both ends of the rubber tube, both ends of the rubber rings are sleeved on the outer side of the inner support rod, and the outer end faces of the rubber rings at both ends of the rubber tube are respectively attached to the side of the top ring end cap and the end face of the support tube end cap.

[0007] A further feature of this invention is that a return spring is fitted inside the rubber tube, with both ends of the return spring respectively attached to the inner end faces of the rubber rings at both ends.

[0008] A further feature of this invention is that a fixed rod handle is fixedly provided at one end of the inner support rod that passes through the screw handle.

[0009] A further feature of this invention is that it also includes a clamping assembly, which includes two pipe clamps and a pipe clamp frame. One side of each pipe clamp has a semi-cylindrical pipe clamp notch. The two pipe clamps are fitted together on the side with the pipe clamp notch. The pipe clamp frame is fitted on the outside of the two pipe clamps. The two side walls of the pipe clamps perpendicular to the opening of the pipe clamp notch are slidably fitted to the inner frame surfaces of the two sides of the pipe clamp frame. The two end frames of the pipe clamp frame are threaded and threaded with a top sleeve bolt. One end of the top sleeve bolt abuts against the end face of the pipe clamp that is away from the pipe clamp notch.

[0010] A further feature of this invention is that top spring ears are fixedly provided on both sides of the pipe clamp sleeve, and the top spring ears slide through both sides of the pipe clamp frame. A release spring is provided on both sides of the pipe clamp frame, and the two ends of the release spring are fixedly connected to the side of the top spring ear on one side of the two pipe clamp sleeves.

[0011] A further feature of this invention is that a semi-circular groove is provided on the inner wall of the pipe clamp notch, and a semi-circular rubber ring is fixedly sleeved in the semi-circular groove.

[0012] This utility model has the following beneficial effects: This invention connects the chamfered cone to the threaded pipe via a threaded connection. During operation, the precision transmission of the threaded pair allows the chamfered cone to be fed at a uniform speed and stably along the pipe opening axis under the guidance and support of the pipe end cap. This ensures that the processed chamfered angle is uniform and the depth is even, significantly improving the dimensional accuracy and consistency of the chamfer.

[0013] This invention provides internal support by extending the end cap of the support tube into the tube, and combines the screw handle and screw grip sleeve to form a double gripping operation point, providing a stable support foundation and convenient force application method for the entire finishing process. This allows the operator to easily and accurately complete the chamfering operation, effectively improving processing quality and operating efficiency. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of a pipe end chamfering and trimming device for evaporator processing.

[0016] Figure 2 This is a schematic diagram of the threaded tube and the internal support rod.

[0017] Figure 3 This is a side sectional view of the inner strut and rubber tube.

[0018] Figure 4 This is a side sectional view of the clamping component.

[0019] Figure 5 This is an exploded view of the pipe clamp and the semi-circular rubber ring.

[0020] The attached diagram lists the components represented by each number as follows: 1-Chamfered cone, 101-Screwing grip, 2-Threaded pipe, 201-Support pipe end cap, 202-Screwing handle, 203-Inner support rod, 203a-Top ring end cap, 203b-Rubber tube, 203b-1-Rubber ring, 203b-2-Reset spring, 203c-Fixed rod handle, 3-Clamping assembly, 301-Pipe clamp sleeve, 301a-Pipe clamp notch, 301a-1-Semi-circular ring groove, 301a-2-Semi-circular ring rubber ring, 301b-Top spring lug, 302-Pipe clamp frame, 302a-Top sleeve bolt, 302b-Clamp release spring. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Example 1

[0022] Please see Figures 1 to 5This utility model relates to a chamfering and trimming device for evaporator tube openings, comprising a chamfering cone 1 and a threaded tube 2. The chamfering cone 1 has a truncated cone structure. One end of the threaded tube 2 is fixedly provided with a support end cap 201. The chamfering cone 1 is threadedly screwed onto the outer wall of the threaded tube 2. A screw handle 202 is fixedly provided at the end of the threaded tube 2 away from the support end cap 201. The pointed end of the chamfering cone 1 faces the support end cap 201. A screw grip sleeve 101 is fixedly provided on the outer wall of the end of the chamfering cone 1 closest to the screw handle 202. By inserting the support end cap 201 into the opening of the evaporator tube to be processed as a support reference, the operator holds the screw handle 202 with one hand to fix the axial direction of the threaded tube 2, and holds the screw grip sleeve 101 with the other hand and rotates it, driving the chamfering cone 1 to feed smoothly along the axial direction of the threaded tube 2, thereby performing precise and uniform chamfering trimming on the tube opening, effectively overcoming the instability of manual operation and improving the chamfering quality and processing efficiency.

[0023] Specifically, the threaded pipe 2 is internally threaded and fitted with an inner support rod 203. The inner support rod 203 is threaded through the screw handle 202. A top ring cap 203a is fixed to one end of the inner support rod 203 that extends out of the support pipe end cap 201. A rubber tube 203b is fitted on the outside of the inner support rod 203. Rubber rings 203b-1 are integrally formed at both ends of the rubber tube 203b. Both ends of the rubber rings 203b-1 are fitted on the outside of the inner support rod 203. The outer end face of the rubber ring 203b-1 is respectively attached to the side of the top ring cap 203a and the end face of the support tube cap 201. The axial position of the top ring cap 203a can be adjusted by screwing the inner support rod 203, so that it and the support tube cap 201 together squeeze the rubber tube 203b and the rubber ring 203b-1, thereby making the rubber tube 203b tightly support the evaporation copper tube from the inside. This can not only adapt to small changes in tube diameter to ensure stable support, but also avoid rigid contact that scratches the inner wall of the copper tube.

[0024] Furthermore, a return spring 203b-2 is provided inside the rubber tube 203b. The two ends of the return spring 203b-2 are respectively attached to the inner end faces of the rubber rings 203b-1 at both ends. The return spring 203b-2 provides continuous axial elastic tension to the rubber tube 203b, and assists the inner support assembly to quickly reset after the chamfering is completed, making it easier for the device to be removed from the tube and improving the continuity of operation.

[0025] Furthermore, a fixed handle 203c is fixed to one end of the inner support rod 203 that passes through the screw handle 202; the fixed handle 203c provides the operator with an independent force application point, making it easy to hold and rotate the inner support rod 203 when adjusting the tightness of the inner support.

[0026] Furthermore, it also includes a clamping assembly 3, which includes two pipe clamp sleeves 301 and a pipe clamp frame 302. One side of each pipe clamp sleeve 301 has a semi-cylindrical pipe clamp notch 301a. The two pipe clamp sleeves 301 are fitted together on the side with the pipe clamp notch 301a. The pipe clamp frame 302 is fitted onto the outside of the two pipe clamp sleeves 301. The two sidewalls of the pipe clamp sleeves 301 perpendicular to the opening of the pipe clamp notch 301a are slidably fitted onto the two sides of the pipe clamp frame 302. On the inner side frame, the two ends of the pipe clamp frame 302 are threaded and threaded with top sleeve bolts 302a. One end of the top sleeve bolt 302a rests on the end face of the pipe clamp sleeve 301 away from the pipe clamp notch 301a. By tightening the top sleeve bolts 302a at both ends, the two pipe clamp sleeves 301 are pushed to slide towards each other along the pipe clamp frame 302, thereby firmly clamping the evaporator tube from both sides, providing a stable external reference for the entire chamfering operation and preventing the pipe from rotating or moving during processing.

[0027] Furthermore, top spring ears 301b are fixedly provided on both sides of the pipe clamp sleeve 301. The top spring ears 301b slide through the two sides of the pipe clamp frame 302. A release spring 302b is provided on both sides of the pipe clamp frame 302. The two ends of the release spring 302b are fixedly connected to the side of the top spring ear 301b on one side of the two pipe clamp sleeves 301. When the top sleeve bolt 302a is loosened, the release spring 302b can automatically push the two pipe clamp sleeves 301 to reset and separate, quickly releasing the clamped evaporation tube, which significantly improves the efficiency of loading and unloading pipe fittings and avoids damage to equipment or workpieces caused by forgetting to loosen the bolt.

[0028] Furthermore, a semi-circular groove 301a-1 is formed on the inner wall of the pipe clamp notch 301a, and a semi-circular rubber ring 301a-2 is fixedly sleeved in the semi-circular groove 301a-1; the semi-circular rubber ring 301a-2 increases the friction between the clamping surface and the outer wall of the evaporation tube, and its elastic material can protect the surface of the copper tube from being pinched or indented, ensuring the firmness of the clamping and the integrity of the workpiece surface.

[0029] The operation process of this embodiment is as follows: First, place the end of the evaporator tube that needs to be chamfered between the two tube clamps 301 of the clamping assembly 3, and tighten the top sleeve bolts 302a at both ends of the tube clamp frame 302 so that the semi-circular rubber ring 301a-2 inside the tube clamp notch 301a fits tightly against the tube wall, and firmly fixes the evaporator tube; then, insert the support tube end cap 201 of the chamfering device into the inside of the fixed evaporator tube opening, rotate the fixed rod handle 203c to drive the inner support rod 203, so that the top ring end cap 203a moves towards the support tube end cap 201, compressing its rubber tube 203b and the return spring 203b-2, thereby from the inside The elastic support tightens the tube wall, forming a stable internal support. Then, the operator holds the screw handle 202 with one hand to keep the threaded tube 2 from rotating axially, and holds the screw grip sleeve 101 with the other hand and rotates it clockwise. The chamfered cone 1 is fed steadily and uniformly towards the tube opening under the threaded transmission, cutting the edge of the tube opening to form a regular chamfer. After completion, the screw grip sleeve 101 is rotated counterclockwise to remove the chamfered cone 1, and the fixed rod handle 203c is rotated in the opposite direction to loosen the internal support and remove the device from the tube. Finally, the top sleeve bolt 302a is loosened, and the clamping assembly 3 automatically opens under the action of the release spring 302b, so that the processed evaporator tube can be removed.

[0030] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A chamfering and trimming device for evaporator processing, comprising a chamfering cone (1) and a threaded pipe (2), characterized in that: The chamfered cone (1) has a truncated cone structure. One end of the threaded tube (2) is fixed with a support tube end cap (201). The chamfered cone (1) is threaded and sleeved on the outer side wall of the threaded tube (2). The end of the threaded tube (2) away from the support tube end cap (201) is fixed with a screw handle (202). The pointed end of the chamfered cone (1) faces the support tube end cap (201). The outer side wall of the end of the chamfered cone (1) near the screw handle (202) is fixed with a screw grip sleeve (101).

2. The device for chamfering and trimming the pipe openings in evaporator processing according to claim 1, characterized in that: The threaded tube (2) is internally threaded and fitted with an inner support rod (203). The inner support rod (203) is threaded through the screw handle (202). One end of the inner support rod (203) extending out of the support tube end cap (201) is fixed with a top ring end cap (203a). A rubber tube (203b) is fitted on the outside of the inner support rod (203). Both ends of the rubber tube (203b) are integrally formed with rubber rings (203b-1). Both ends of the rubber rings (203b-1) are fitted on the outside of the inner support rod (203). The outer end faces of the rubber rings (203b-1) at both ends of the rubber tube (203b) are respectively attached to the side of the top ring end cap (203a) and the end face of the support tube end cap (201).

3. The device for chamfering and trimming the pipe openings in evaporator processing according to claim 2, characterized in that: The rubber tube (203b) is fitted with a return spring (203b-2), and the two ends of the return spring (203b-2) are respectively attached to the inner end faces of the two end rubber rings (203b-1).

4. The pipe end chamfering and trimming device for evaporator processing according to claim 3, characterized in that: The inner support rod (203) is fixed to one end of the screw handle (202) with a fixed rod handle (203c).

5. The pipe end chamfering and trimming device for evaporator processing according to claim 1, characterized in that: It also includes a clamping assembly (3), which includes two pipe clamps (301) and a pipe clamp frame (302). One side of the pipe clamp (301) is provided with a semi-cylindrical pipe clamp notch (301a). The two pipe clamps (301) are fitted together on the side with the pipe clamp notch (301a). The pipe clamp frame (302) is sleeved on the outside of the two pipe clamps (301). The two side walls of the pipe clamp (301) perpendicular to the opening surface of the pipe clamp notch (301a) are respectively slidably fitted to the inner frame surfaces on both sides of the pipe clamp frame (302). The two end frames of the pipe clamp frame (302) are respectively threaded and threaded through and sleeved with a top sleeve bolt (302a). One end of the top sleeve bolt (302a) is pressed against the end face of the pipe clamp (301) away from the pipe clamp notch (301a).

6. The device for chamfering and trimming pipe ends for evaporator processing according to claim 5, characterized in that: The two side walls of the pipe clamp (301) are respectively provided with top spring ears (301b), and the two top spring ears (301b) slide through the two side frames of the pipe clamp frame (302). The two sides of the pipe clamp frame (302) are respectively provided with a release spring (302b), and the two ends of the release spring (302b) are respectively fixedly connected to the side of the top spring ear (301b) on one side of the two pipe clamps (301).

7. The device for chamfering and trimming pipe ends for evaporator processing according to claim 6, characterized in that: The inner wall of the pipe clamp notch (301a) is provided with a semi-circular annular groove (301a-1), and a semi-circular annular rubber ring (301a-2) is fixedly sleeved in the semi-circular annular groove (301a-1).

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