Electronic cigarette heating wire welding and drawing force testing fixture

Abstract

The utility model relates to the technical field of drawing force test, especially electronic cigarette heating wire welding drawing force test fixture, including base, compression assembly and fixed base, base is used for installing and fixing on the workbench of external tension test equipment, the length direction and width direction of base are respectively arranged as horizontal X direction and horizontal Y direction, compression assembly is used for fixed heating wire, the lower end of fixed base is vertically provided with the traction mechanism located above compression assembly, and the traction mechanism includes rotary head, pull ring and chuck, and the rotary head is rotatably connected below the fixed base through a vertical pivot; the upper end of the pull ring is hingedly matched with the rotary head, and the chuck is connected to the lower end of the pull ring; the chuck clamps the wire welded on the heating wire. The utility model discloses a drawing force test fixture aims at solving the technical problem that the angle between the wire and the chuck cannot be reduced in the existing drawing force test fixture because the rigid structure cannot self-adaptively adjust the angle between the wire and the chuck.

Description

Technical Field

[0001] This utility model relates to the field of pull-out force testing technology, specifically to a jig for testing the pull-out force of welding heating wires in electronic cigarettes. Background Technology

[0002] In the field of electronic cigarette manufacturing, after the heating wire and the wire are welded, a pull-out force test is required to verify the reliability of the solder joint. In actual operation, since the operator usually needs to manually put the wire into the clamp and fix it, it is difficult to ensure that the wire is vertically held and fixed by the clamp when it is put into the clamp, resulting in the wire having an angular deviation. Therefore, the data of pulling the wire usually has a certain degree of distortion.

[0003] In a wire harness tensile testing device disclosed in patent publication number CN202022455736, the clamp is used to hold and fix the wire. However, since the clamp and the tensile testing machine are rigidly connected, it can only provide vertical upward tensile force. If the wire is tilted, the wire and the central axis of the clamp will be set at an angle. Then, during the pulling process, the vertical upward movement trajectory of the clamp will forcibly pull the tilted wire, and it cannot adaptively adjust the angle between the wire and the clamp, thus failing to reduce the angle between the wire and the clamp, and consequently failing to reduce the data distortion of the pulling test. Utility Model Content

[0004] In view of this, the present invention provides a welding pull-out force testing fixture for electronic cigarette heating wires, which aims to solve the technical problem that existing pull-out force testing fixtures cannot adaptively adjust the angle between the wire and the clamp due to their rigid structure, thus failing to reduce the angle between the wire and the clamp.

[0005] To solve the above-mentioned technical problems, this utility model provides a testing fixture for the welding pull-out force of electronic cigarette heating wires, including a base, a clamping assembly, and a fixing seat. The base is used to install and fix it on the worktable of an external tensile testing device. The length and width directions of the base are respectively set as the horizontal X direction and the horizontal Y direction. The clamping assembly is disposed on the base and is used to fix the heating wire. The fixing seat is used to connect with the tensile part of the tensile testing device. A traction mechanism is vertically disposed at the lower end of the fixing seat and located above the clamping assembly. The traction mechanism includes a rotating head, a pull ring, and a clamp. The rotating head is rotatably connected to the lower part of the fixing seat via a vertical rotating shaft. The upper end of the pull ring is hinged to the rotating head. The clamp is connected to the lower end of the pull ring. The pull ring can drive the clamp to swing back and forth in the horizontal Y direction. The clamp clamps the wire fixedly welded to the heating wire in the horizontal X direction.

[0006] Furthermore, the center of the fixed base has a vertically oriented through groove, the rotating shaft passes through the through groove, the rotating shaft can rotate relative to the fixed base, the axis of the rotating shaft extends vertically, and the lower end of the rotating shaft is threadedly connected to the rotating head.

[0007] Furthermore, the clamp is hinged to the lower end of the pull ring via a connecting seat, and the hinge axis between the connecting seat and the pull ring is parallel to the hinge axis between the pull ring and the rotating head.

[0008] Furthermore, the clamp includes two clamping blocks, which are respectively hinged to the connecting seat so that the two clamping blocks can open and close in the horizontal X direction. The clamp is provided with a locking structure, which is used to drive the two clamps to move closer to each other to clamp and fix the wire.

[0009] Furthermore, the opposing surfaces of the two clamping blocks are respectively provided with threaded holes and through holes, the threaded holes and through holes are coaxial, and the locking structure includes a locking member, which slides through the through hole along the horizontal X direction and is threadedly engaged with the threaded hole of the clamping block.

[0010] Furthermore, the connecting seat is provided with connecting shafts on both sides along the horizontal X direction, and the connecting shafts extend along the horizontal Y direction. The two clamping blocks are respectively hinged to the two connecting shafts so that the two clamping blocks can open and close along the horizontal X direction.

[0011] Furthermore, the locking structure also includes an elastic reset structure disposed between the two clamping blocks.

[0012] Furthermore, the elastic reset structure includes a spring located between the two clamping blocks, with both ends of the spring fixed to the opposing surfaces of the two clamping blocks respectively.

[0013] Furthermore, the clamping assembly includes a support frame, a drive assembly, and a top block. The support frame is fixedly mounted on the upper part of the base. A stop block is provided on one side of the upper end of the support frame. The top block is located below the stop block. The heating wire is placed on the upper surface of the top block. The drive assembly is used to push the top block to move upward, so that the top block pushes the heating wire to move upward and abut against the stop block, thereby fixing the heating wire.

[0014] Furthermore, a limiting slot is formed in the center of the stop block, and the part of the wire that has been welded to the heating wire corresponds to the area directly below the limiting slot. The free end of the wire is used to pass through the limiting slot and is fixed by the clamp.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] In use, the operator manually inserts and fixes the free end of the wire into the clamp. During this process, if the wire tilts to the left and forward, an angle will form between the wire's axis and the vertical center line of the clamp, and the tilt direction of the wire will not be parallel to the horizontal Y-direction swing direction of the pull ring. After starting the external pull force testing equipment, the fixed base moves upward under the pull force of its tension part, which in turn drives the pull ring and clamp to rise together through the rotating head. In the initial upward pull stage, because the wire is tilted to the left and forward, its pull force on the clamp will generate a component force along the tilt direction. This component force will first be transmitted to the pull ring and drive the entire rotating head to rotate horizontally around its vertical axis. This rotational movement will automatically adjust the direction in which the pull ring can swing freely to be consistent with the tilt direction of the wire, i.e., adjust... As the pull ring swings from the left front to the right rear, and the direction of the pull ring's swing aligns with the direction of the wire's tilt, the upper end of the pull ring is hinged to the rotating head. The clamp and pull ring will follow the direction of the wire's left front tilt, driving the clamp to perform a translational swing to the right rear. This makes the clamp parallel to the wire's central axis, eliminating the angle between the clamp and the wire. At this point, the wire begins to be pulled off the heating wire. During the pulling process, the clamp can continuously and dynamically fine-tune its position, keeping the clamp's central axis parallel to the wire's central axis. This ensures that the pulling force direction remains consistent with the wire's axis during the pulling process, thus solving the technical problem in existing pull-out force testing fixtures where the rigid structure cannot adaptively adjust the angle between the wire and the clamp, thereby preventing the reduction of the angle between the wire and the clamp. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of the pull ring, rotating head, and connecting seat of this utility model after separation.

[0019] Figure 3 This is a schematic diagram of the heating wire structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the pull ring, rotating head and connecting seat of this utility model;

[0021] Figure 5 This is a cross-sectional view of the internal structure of the fixing base of this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the present invention after the rotating shaft and rotating head are separated;

[0023] Figure 7 This is a schematic diagram of the chuck and connecting seat structure of this utility model;

[0024] Figure 8 For the present utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle;

[0025] Figure 9 This is a left view of the wire of this utility model before it is pulled out;

[0026] Figure 10 This is a left view of the wire of this utility model after it has been pulled.

[0027] Numbering in each attached figure:

[0028] 100. Base; 200. Clamping assembly; 201. Support frame; 202. Drive assembly; 203. Top block; 204. Stop block; 300. Heating wire; 301. Wire; 400. Fixing seat; 500. Rotating head; 501. First pin hole; 600. Pull ring; 700. Clamp; 701. Clamping block; 702. Connecting shaft; 703. Locking element; 704. Spring; 705. Threaded hole; 706. Through hole; 800. Connecting seat; 801. Waist-shaped groove; 802. Second pin hole; 900. Rotating shaft; 901. Threaded locking part. Detailed Implementation

[0029] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0030] In the description of this utility model, it should be understood that the terms "width", "upper", "lower", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" 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, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through other features. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] Please refer to Figures 1-10 This utility model provides a testing fixture for the welding pull-out force of electronic cigarette heating wires.

[0034] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The electronic cigarette heating wire welding pull-out force testing fixture includes a base 100, a clamping assembly 200, and a fixing seat 400. The base 100 is used to mount and fix the heating wire 300 on the worktable of an external tensile testing device. The length and width directions of the base 100 are respectively set as horizontal X-direction and horizontal Y-direction. The clamping assembly 200 is disposed on the base 100 and is used to fix the heating wire 300. The operator fixes the heating wire 300, which has been welded with wires 301, through the clamping assembly 200. The fixing seat 400 is used to connect to the tensile testing device, and the fixing seat 400 is located directly above the clamping assembly 200, so that the heating wire 300 and the fixing seat 400 are on the same vertical line. A traction mechanism is vertically arranged at the lower end of the fixing seat 400.

[0035] The traction mechanism consists of a rotating head 500, a pull ring 600, and a clamp 700 connected sequentially from top to bottom. The entire traction mechanism is located directly above the pressing assembly 200. The rotating head 500 is rotatably connected to the lower part of the fixed base 400 via a vertical rotating shaft. The axis of the rotating head coincides with the vertical central axis of the fixed base 400 and remains perpendicular to the upper surface of the base 100, ensuring that the rotating head 500 can rotate freely around the rotating shaft. The upper end of the pull ring 600 is hinged to the rotating head 500. The clamp 700 is connected to the lower end of the pull ring 600 and clamps the wire 301, which is fixedly welded to the heating wire 300, along the horizontal X direction. The pull ring 600 has a rectangular frame structure. By opening a first pin hole 501 in the horizontal X direction of the rotating head 500, the upper horizontal hinge shaft of the rectangular pull ring 600 is passed through the first pin hole 501 of the rotating head 500, so that the pull ring 600 can drive the chuck 700 to swing back and forth in the horizontal Y direction. Due to the axial rotational cooperation between the rotating head 500 and the fixed base 400, the pull ring 600 can rotate together with the rotating head 500, and its swing direction changes accordingly.

[0036] After the heating wire 300 assembly under test is reliably fixed by the clamping assembly 200, the operator manually inserts and fixes the free end of the wire 301 into the clamp 700. During this process, for example, if the wire 301 tilts to the left and forward, an angle will be formed between the axis of the wire 301 and the vertical center line of the clamp 700, and the tilting direction of the wire 301 is not parallel to the initial swing direction (horizontal Y direction) of the pull ring 600. After the external tensile testing equipment is started, the fixing seat 400 is subjected to its tensile force. The conductor 301 is pulled upwards, and then the rotating head 500 drives the pull ring 600 and the clamp 700 to rise together. In the initial upward pull phase, because the conductor 301 is tilted to the left and forward, the pulling force on the clamp 700 will generate a component force along the tilt direction. This component force will first be transmitted to the pull ring 600 and drive the entire rotating head 500 to rotate horizontally around its axis. This rotational motion will automatically adjust the direction in which the pull ring 600 can swing freely to a position consistent with the tilt direction of the conductor 301, and the pull ring 600... During the process of aligning the swing direction with the tilt direction of the wire 301, since the upper end of the pull ring 600 is hinged to the rotating head 500, the clamp 700 and the pull ring 600 do not rigidly rise vertically after being subjected to an upward force. Instead, they will follow the direction of the wire 301 tilting to the left and forward, driving the clamp 700 to perform a translational swing to the right and rear, making the clamp 700 parallel to the central axis of the wire 301, thereby reducing the angle between the clamp 700 and the wire 301. At this time, the wire 301 begins to be pulled off the heating wire 300. During the pull-out process, the chuck 700 can continuously and dynamically fine-tune its position to keep the central axis of the chuck 700 parallel to the central axis of the free end of the wire 301. This ensures that the direction of the pulling force is always consistent with the wire 301 during the pull-out process, solving the technical problem that existing pull-out force testing fixtures cannot adaptively adjust the angle between the wire 301 and the chuck 700 due to their rigid structure, thus making it impossible to reduce the angle between the wire 301 and the chuck 700.

[0037] Another example, see reference. Figure 9 and Figure 10When the wire 301 is placed into the clamp 700, its free end is tilted forward and does not receive an upward pulling force. There is an angle between the free end of the wire 301 and the clamp 700. At this time, the pulling part is activated to drive the clamp 700 to rise, so that the free end of the wire 301 is subjected to an upward pulling force. Since the upper end of the pull ring 600 is hinged to the rotating head 500, the clamp 700 and the pull ring 600 do not rise rigidly vertically when subjected to an upward force. Instead, they will follow the tilt direction of the wire 301 and drive the clamp 700 to move and swing backward of the tilt of the wire 301, so that the clamp 700 and the central axis of the free end of the wire 301 are parallel. During the continuous upward pulling of the clamp 700, the welded part of the wire 301 on the heating wire 300 is gradually peeled off from front to back. During the peeling process, due to the hinge of the pull ring 600, the clamp 700 will also cause the free end of the wire 301 to swing from front to back. This ensures that the free end of the wire 301 and the central axis of the clamp 700 are always parallel during the pulling and peeling process, ensuring that the direction of the pulling force is always consistent with the wire 301, thereby reducing the angle between the clamp 700 and the wire 301.

[0038] Reference Figure 5 and Figure 6 The center of the fixed base 400 has a through groove extending vertically through the upper and lower end faces of the fixed base 400. The inner diameter of the through groove is adapted to the outer diameter of the rotating shaft 900, ensuring that the rotating shaft 900 can be smoothly inserted into the through groove and can rotate freely relative to the fixed base 400. The axis of the rotating shaft 900 extends vertically and coincides with the vertical central axis of the fixed base 400, ensuring that the rotation center of the rotating head 500 is aligned with the overall center of the fixture. The lower end of the rotating shaft 900 is integrally formed or fixedly connected to a threaded locking part 901, the outer diameter of which is smaller than the outer diameter of the main body of the rotating shaft 900. The center of the upper end face of the rotating head 500 has a threaded groove, which is coaxially corresponding to the through groove of the fixed base 400, and the thread specification matches that of the threaded locking part 901. After the threaded locking part 901 is screwed into the threaded groove, the rotating shaft 900 and the rotating head 500 are fixedly connected. Of course, in other embodiments, the rotating shaft 900 can also be welded and fixed to the rotating head 500 to ensure that the rotating shaft 900 and the rotating head 500 are coaxial.

[0039] Reference Figure 2 and Figure 4The chuck 700 is hinged to the lower end of the pull ring 600 via a connecting seat 800. The connecting seat 800 is located between the chuck 700 and the pull ring 600, and the upper end of the connecting seat 800 is hinged to the lower end of the pull ring 600 via a hinge pin. The upper part of the connecting seat 800 has a second pin hole 802 extending through it in the horizontal X direction. The hinge shaft of the lower part of the pull ring 600 passes through the second pin hole 802 of the connecting seat 800. Since the pull ring 600 has a rectangular frame structure, the hinge shafts between the pull ring 600 and the rotating head 500, and between the pull ring 600 and the connecting seat 800, are completely parallel in their axial directions. The lower end face of the connecting seat 800 is connected to the upper end face of the chuck 700, so that the chuck 700 can swing horizontally in the Y direction relative to the pull ring 600, thereby improving the flexibility of the chuck 700 when pulling the wire 301.

[0040] Reference Figure 7 The clamp 700 consists of two symmetrically arranged clamping blocks 701, which are located on both sides of the connecting seat 800 along the horizontal X direction. Each clamping block 701 has a hinge shaft at its upper end, and the clamping block 701 is hinged to the lower part of the connecting seat 800 through the hinge shaft. The hinge points at the upper ends of the two clamping blocks 701 are at the same height, ensuring that the opening and closing trajectories of the two clamping blocks 701 are symmetrical. The locking structure is set on the outside or opposite side of the two clamping blocks 701, and its installation direction is parallel to the horizontal X direction and is adapted to the opening and closing direction of the clamping blocks 701. The two clamping blocks 701 can open and close around the hinge point with the connecting seat 800 along the horizontal X direction. When it is necessary to clamp the wire 301, the clamping blocks 701 are opened outward to place the wire 301 between the two clamping blocks 701. Then, the locking structure drives the two clamping blocks 701 to move closer to each other until they are tightly attached to the surface of the wire 301.

[0041] Reference Figure 7 On the sides of the two clamping blocks 701 that are close to each other, one clamping block 701 has a threaded hole 705 through it, and the other clamping block 701 has a through hole 706 through it. The axis of the threaded hole 705 and the through hole 706 are collinear in the horizontal X direction, and the inner wall of the through hole 706 has a gap with the outer wall of the locking member 703. The locking structure includes a locking member, which slides through the through hole 706 in the horizontal X direction and is threadedly engaged with the threaded hole 705 of the clamping block. The locking member 703 is specifically a bolt or screw. The head diameter of the locking member 703 is larger than the diameter of the through hole 706 to prevent the locking member 703 from being completely inserted between the two clamping blocks 701. When it is necessary to clamp and fix the wire 301, the free end of the wire 301 is placed between the two clamping blocks 701, and then the locking member 703 is screwed on. The head of the locking member 703 presses the two clamping blocks 701 closer together, thereby achieving the clamping and fixing of the wire 301 by the two clamping blocks 701.

[0042] Reference Figure 7The connecting seat 800 has connecting shafts 702 fixed on both sides along the horizontal X direction. The axis of the connecting shafts 702 extends along the horizontal Y direction, and the axes of the two connecting shafts 702 are collinear. The upper ends of the two clamping blocks 701 are provided with hinge holes that are adapted to the connecting shafts 702. The two clamping blocks 701 are respectively sleeved on the connecting shafts 702 on both sides through the hinge holes, and can rotate freely around the connecting shafts 702, so that the two clamping blocks 701 can open and close along the horizontal X direction.

[0043] It is worth mentioning that two elongated slots 801 are symmetrically formed on both sides of the lower end of the connecting seat 800 along the horizontal X direction. The slots 801 extend along the horizontal X direction and penetrate through both sides of the connecting seat 800 along the horizontal Y direction. The connecting shaft 702 slides and engages inside the slots 801 along the horizontal X direction. The connecting shaft 702 extends from the penetration of the slots 801 and connects to the upper end of the clamping blocks 701. This allows the two clamping blocks 701 to not only be hinged to the connecting seat 800 through the connecting shaft 702, but also to the connecting seat 800 through the slots 801. This makes the two clamping blocks 701 more flexible. When the locking member 703 is turned, it avoids jamming due to the pure hinge of the clamping blocks 701. The relative sliding of the two clamping blocks 701 along the horizontal X direction makes the movement of the clamping blocks 701 smoother when the locking member 703 is turned.

[0044] Reference Figure 7 An elastic reset structure is positioned between two clamping blocks 701. Both ends of the elastic reset structure are fixedly connected to the opposing surfaces of the two clamping blocks 701. In its natural state, the elastic reset structure is slightly open or naturally extended, pushing the two clamping blocks 701 to maintain an open posture. When the locking member 703 drives the two clamping blocks 701 to close and clamp the wire 301, the elastic reset structure is compressed or stretched, storing elastic potential energy. When the locking member 703 is released, the elastic reset structure releases its potential energy, generating a reverse thrust that automatically opens the two clamping blocks 701, resetting them. This eliminates the need for operators to manually pry open the clamping blocks 701, greatly improving the convenience of picking up and placing the wire 301, shortening test preparation time, and increasing overall test efficiency.

[0045] Reference Figure 7 The elastic reset structure is specifically a spring 704, which is sleeved on the locking member 703 along the horizontal X direction and located between the two clamping blocks 701. The two ends of the spring 704 are respectively fixed to the facing surfaces of the two clamping blocks 701. The natural length of the spring 704 is slightly greater than the distance between the two clamping blocks 701 in the open state, ensuring that it can provide a continuous opening force to the clamping blocks 701 in the natural state.

[0046] Reference Figure 1 and Figure 8The clamping assembly includes a support frame, a drive assembly, and a top block. The support frame 201 is a frame structure, vertically fixed to the upper surface of the base 100. A stop block 204 is horizontally fixed to one side of the upper end of the support frame 201, with its upper surface sharing a wall with the upper end face of the support frame 201. The stop block 204 and the support frame 201 are integrally formed. The top block 203 is located directly below the stop block 204, and its upper surface is flat, used to support the heating wire 300. The drive assembly 202 is located inside the base 100 or on the side of the support frame 201, with its output end connected to the lower end of the top block 203, and its driving direction is vertical. The drive assembly is used to push the top block upwards, causing the top block to push the heating wire upwards and abut against the stop block, thereby fixing the heating wire. The driving component 202 is a cylinder. Before testing, the heating wire 300 is placed on the upper surface of the top block 203. The driving component 202 is started, and the driving component 202 pushes the top block 203 to move upward in the vertical direction. The top block 203 drives the heating wire 300 to move upward synchronously until the upper surface of the heating wire 300 is in close contact with the lower surface of the stop block 204. At this time, the heating wire 300 is restricted between the top block 203 and the stop block 204, achieving rigid fixation in the vertical direction. This ensures that the heating wire 300 will not be displaced or shaken during the pulling process, so that the pulling force can be fully applied to the welding point between the heating wire 300 and the wire 301, avoiding test errors caused by the loosening of the heating wire 300.

[0047] Reference Figure 1 and Figure 8 The limiting slot is located at the center of the stop block 204 and extends vertically through the upper and lower end faces of the stop block 204. The width of the limiting slot is slightly larger than the diameter of the wire 301 to ensure that the wire 301 can pass through smoothly without excessive shaking. The bottom of the limiting slot corresponds exactly to the welding part of the wire 301 on the heating wire 300. The free end of the wire 301 extends upward from the welding part, passes through the limiting slot, and aligns with the clamping opening of the clamp 700, and is finally clamped and fixed by the clamp 700.

[0048] The limiting slot serves as an initial positioning and guide for the wire 301. When placing the heating wire 300, the position of the heating wire 300 can be adjusted so that the part of the wire 301 to be pulled off corresponds directly below the limiting slot. Through the design of the limiting slot, when the free end of the wire 301 passes through the limiting slot, the initial tilt angle of the wire 301 in the horizontal X direction is reduced. The adjustment of the pull ring 600 and the rotating head 500 further corrects the remaining tilt. Under the dual action, the pull angle can be calibrated to be close to vertical more quickly and accurately, which further improves the accuracy of the test data.

[0049] In summary, the working principle of this utility model is as follows:

[0050] Before testing, the fixing base 400 is fixedly connected to the tensile part in the tensile testing assembly. Then, the heating wire 300 with the wire 301 welded on it is placed on the positioning block, and the welding part of the wire 301 is aligned with the bottom of the limiting seam. Then, the drive assembly 202 is activated to drive the top block 203 and the heating wire 300 to rise, so that the top block 203 drives the heating wire 300 to abut against the stop block 204 for fixing.

[0051] Bend the free end of the wire 301 upward and pass it through the limiting slot, and adjust it between the two clamps 701. Then screw the locking piece 703 to bring the two clamps 701 closer together to fix the free end of the wire 301.

[0052] After the test is started, the pulling part of the external tensioning device drives the fixed seat 400 to move upward. The fixed seat 400 pulls the pull ring 600 upward through the rotating head 500. The pull ring 600 then drives the clamp 700 and the wire 301 to move upward synchronously through the hinge with the connecting seat 800. If the wire 301 is initially tilted (such as tilted to the left and forward), its tension on the clamp 700 will generate a component force along the tilt direction.

[0053] The force first drives the rotating head 500 to rotate horizontally around the vertical axis, automatically adjusting the initial swing direction of the pull ring 600 to match the tilt direction of the wire 301 (e.g., from left front to right rear). Simultaneously, the hinge structure between the pull ring 600 and the connecting seat 800 causes the clamp 700 to adaptively adjust along the adjusted swing direction (e.g., lateral swing to the right rear). Combined with the hinge between the clamp 701 and the connecting seat 800, this gradually reduces the initial angle between the wire 301 and the clamp 700 until their central axes are parallel. Once the tilt angle between the wire 301 and the clamp 700 is eliminated, the wire 301 begins to pull from the heating wire under the pull force. During the peeling process from the heating wire 300, the pull ring 600 and the clamp 700 continuously swing in the peeling direction of the wire 301. This allows the clamp 700 to dynamically adjust during the peeling process, maintaining the central axis between the clamp 700 and the wire 301 in a parallel state, thereby reducing detection distortion. The process continues until the wire 301 is completely peeled from the heating wire 300, at which point the pulling force of the clamp 700 on the wire 301 disappears. At this point, the pull ring 600, through its hinge, drives the clamp 700 to reset, restoring the central axis of the clamp 700 to a vertical state. The pulling force during the peeling process is displayed in the tensile testing equipment. The above description is a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A testing fixture for the welding pull-out force of an electronic cigarette heating wire, comprising a base, a clamping assembly, and a fixing seat, wherein the base is used to install and fix it on the worktable of an external tensile testing device, the length direction and width direction of the base are respectively set as the horizontal X direction and the horizontal Y direction, the clamping assembly is disposed on the base for fixing the heating wire, the fixing seat is used to connect to the tensile testing device, and a traction mechanism is vertically disposed at the lower end of the fixing seat above the clamping assembly, characterized in that: The traction mechanism includes a rotating head, a pull ring, and a clamp. The rotating head is rotatably connected to the lower part of the fixed base via a vertical rotating shaft. The upper end of the pull ring is hinged to the rotating head, and the clamp is connected to the lower end of the pull ring. The pull ring can drive the clamp to swing back and forth in the horizontal Y direction. The clamp clamps the wire fixedly welded to the heating wire in the horizontal X direction.

2. The electronic cigarette heating wire welding pull-out force testing fixture as described in claim 1, characterized in that: The center of the fixed base has a vertically oriented through groove, through which the rotating shaft passes. The rotating shaft can rotate relative to the fixed base, and its axis extends vertically. The lower end of the rotating shaft is threadedly connected to the rotating head.

3. The electronic cigarette heating wire welding pull-out force testing fixture as described in claim 1, characterized in that: The chuck is hinged to the lower end of the pull ring via a connecting seat, and the hinge axis between the connecting seat and the pull ring is parallel to the hinge axis between the pull ring and the rotating head.

4. The electronic cigarette heating wire welding pull-out force testing fixture as described in claim 3, characterized in that: The clamp includes two clamping blocks, which are respectively hinged to the connecting seat so that the two clamping blocks can open and close in the horizontal X direction. The clamp is provided with a locking structure, which is used to drive the two clamps to move closer to each other to clamp and fix the wire.

5. The electronic cigarette heating wire welding pull-out force testing fixture as described in claim 4, characterized in that: The two clamping blocks have threaded holes and through holes respectively on their facing surfaces. The threaded holes and through holes are coaxial. The locking structure includes a locking member, which slides through the through hole in the horizontal X direction and is threadedly engaged with the threaded hole of the clamping block.

6. The electronic cigarette heating wire welding pull-out force testing fixture as described in claim 4, characterized in that: The connecting seat is provided with connecting shafts on both sides along the horizontal X direction, and the connecting shafts extend along the horizontal Y direction. The two clamping blocks are respectively hinged to the two connecting shafts so that the two clamping blocks can open and close along the horizontal X direction.

7. The electronic cigarette heating wire welding pull-out force testing fixture as described in claim 5, characterized in that: The locking structure also includes an elastic reset structure disposed between the two clamping blocks.

8. The electronic cigarette heating wire welding pull-out force testing fixture as described in claim 7, characterized in that: The elastic reset structure includes a spring located between the two clamping blocks, with both ends of the spring fixed to the opposing surfaces of the two clamping blocks respectively.

9. The electronic cigarette heating wire welding pull-out force testing fixture as described in claim 1, characterized in that: The clamping assembly includes a support frame, a drive assembly, and a top block. The support frame is fixedly mounted on the upper part of the base. A stop block is provided on one side of the upper end of the support frame. The top block is located below the stop block. The heating wire is placed on the upper surface of the top block. The drive assembly is used to push the top block to move upward, so that the top block pushes the heating wire to move upward and abut against the stop block, thereby fixing the heating wire.

10. The electronic cigarette heating wire welding pull-out force testing fixture as described in claim 9, characterized in that: A limiting slot is provided in the center of the stop block. The part of the wire that has been welded to the heating wire corresponds to the area directly below the limiting slot. The free end of the wire is used to pass through the limiting slot and is fixed by the clamp.

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