Clamping mechanism for reducing sleeve of threading machine

Abstract

The utility model relates to the field of die head threading machines, in particular to a clamping mechanism of a die head threading machine reducing sleeve, which comprises a reducing sleeve main body and a movable sleeve, a mounting channel is arranged in the reducing sleeve main body in a penetrating manner, the movable sleeve is sleeved on the reducing sleeve main body in a sliding manner, a mounting hole is arranged on the side wall of the reducing sleeve main body, and a clamping ball is movably arranged in the mounting hole. An outer opening part is formed at the joint of the mounting hole and the outer side wall of the reducing sleeve main body, an inner opening part is formed at the joint of the mounting hole and the inner side wall of the reducing sleeve main body, the opening area of the outer opening part is larger than or equal to the maximum sectional area of the clamping bead, and the maximum sectional area of the clamping bead is larger than the opening area of the inner opening part; part of the clamping balls penetrate through the inner opening part and extend into the mounting channel; the utility model solves the problems that the die head is inconvenient to disassemble and assemble and is not durable enough.

Description

Technical Field

[0001] This utility model relates to the field of threading machines, and in particular to a clamping mechanism for a threading machine adapter sleeve. Background Technology

[0002] When using a handheld threading machine, it is important to minimize the axial force generated during threading that could affect the die head and cause the gearbox to loosen.

[0003] The methods for fixing die heads on the market are relatively simple, mainly relying on spring rings to fix the die head. Die heads using this installation method require a lot of force and even tools when they need to be installed and removed. They are not convenient to install and remove, and repeated installation and removal will affect the spring rings, reduce their performance, and limit their service life, requiring timely replacement. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a clamping mechanism for the adapter sleeve of a threading machine, which solves the issues of inconvenient assembly and disassembly of the die head and its lack of durability.

[0005] The technical solution adopted by this utility model is: a clamping mechanism for a threading machine adapter sleeve, including an adapter sleeve body and a movable sleeve. An installation channel is provided through the adapter sleeve body. The movable sleeve is slidably sleeved on the adapter sleeve body. An installation hole is opened on the side wall of the adapter sleeve body. A retaining bead is movably disposed in the installation hole. An outer opening is formed where the installation hole connects with the outer side wall of the adapter sleeve body, and an inner opening is formed where the installation hole connects with the inner side wall of the adapter sleeve body. The opening area of ​​the outer opening is greater than or equal to the maximum cross-sectional area of ​​the retaining bead, and the maximum cross-sectional area of ​​the retaining bead is greater than the opening area of ​​the inner opening. The movable sleeve includes a clamping part. When the clamping part is located outside the installation hole, part of the retaining bead passes through the inner opening and extends into the installation channel.

[0006] With the above technical solution, the installation channel is used to install the die head. When the user drives the movable sleeve to position the clamping part outside the outer opening, the clamping part limits the locking ball. The locking ball passes through the inner opening and extends into the installation channel to lock the die head therein. When the user drives the movable sleeve to offset the clamping part from the outer opening, the die head therein is released and can be disassembled or replaced, which is very convenient for disassembly and assembly. Moreover, by using the locking ball to lock the die head, the locking ball is not easily deformed and has the advantage of durability.

[0007] Furthermore, the movable sleeve includes a clearance portion, and a clearance gap is formed between the clearance portion and the outer side wall of the adapter sleeve body; when the retaining bead abuts the clearance portion, the center of the retaining bead is still located in the mounting hole.

[0008] Through the above technical solution, the setting of the avoidance part ensures that the die head can be easily disassembled and assembled, while limiting the maximum distance that the retaining ball can move outward. When the user slides the movable sleeve and switches the outer part of the outer opening from the avoidance part to the clamping part, the inclined surface of the retaining ball is pushed and slides inward, making the use smoother.

[0009] Furthermore, the movable sleeve also includes a conical surface that is in contact with the edge of the clamping portion near the clearance portion.

[0010] With the above technical solution, as the user slides the movable sleeve and switches the outer part of the outer opening from the avoidance part to the clamping part, the conical part squeezes the surface of the locking bead to make it slide inward, making the use smoother.

[0011] Furthermore, the movable sleeve includes a flange portion, the adapter sleeve body includes a stop portion, and the flange portion and the stop portion abut against an elastic element.

[0012] With the above technical solution, the user drives the movable sleeve and compresses the elastic element, so that the avoidance part is located outside the outer opening. Then, the user places the die head in a suitable position in the installation channel and releases the movable sleeve. The movable sleeve slides under the action of the elastic element until the clamping part is located outside the outer opening, causing the locking ball to automatically lock the die head, making the installation process more convenient.

[0013] Furthermore, the adapter sleeve body includes a baffle portion, and when the movable sleeve abuts against the baffle portion, the elastic element extends to its maximum length.

[0014] Through the above technical solution, the design of the baffle avoids excessive slippage of the movable sleeve, avoids wasted effort, and further avoids the movable sleeve from detaching from the main body of the adapter sleeve.

[0015] Furthermore, the movable sleeve includes an extension portion, the elastic element is located inside the extension portion, and the extension portion is provided with an anti-slip pattern.

[0016] Through the above technical solution, the extension part covers the elastic element, which reduces the erosion of the elastic element by external moisture and dirt to a certain extent, thus extending the service life of the elastic element; the anti-slip pattern increases the friction between the user's hand and the movable sleeve, making it easier for the user to grip and drive the movable sleeve.

[0017] Furthermore, the mounting hole includes an interconnected movable section and a constricted section, the constricted section being connected to the inner opening, and the cross-sectional area of ​​the constricted section gradually decreasing in the direction toward the inner side of the adapter sleeve body.

[0018] Through the above technical solution, the cross-sectional area of ​​the constricted section facing the installation channel gradually decreases, which makes the inner diameter of the installation hole change smoothly, optimizes the internal structural strength of the installation hole, and reduces the occurrence of loosening of the die head due to plastic deformation inside the installation hole during use.

[0019] Furthermore, the clasp is made of steel.

[0020] Through the above technical solutions, the card ball has high structural strength, wear-resistant and pressure-resistant material, and extended service life. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is one of the structural schematic diagrams of this utility model;

[0023] Figure 2 This is one of the cross-sectional views of this utility model;

[0024] Figure 3 This is an exploded view of the present invention;

[0025] Figure 4 This is the second structural schematic diagram of the present invention;

[0026] Figure 5 This is a second sectional view of the present invention;

[0027] Figure 6 This is a schematic diagram of the main body of the adapter sleeve of this utility model;

[0028] Figure 7 This is a schematic diagram of the movable sleeve of this utility model;

[0029] The utility model reference information is as follows:

[0030] 1. Adapter sleeve body; 2. Movable sleeve; 3. Clamping ball; 4. Clearance gap; 5. Elastic element; 11. Mounting channel; 12. Mounting hole; 13. Outer opening; 14. Inner opening; 15. Stop; 16. Baffle; 121. Movable section; 122. Narrowing section; 21. Clamping part; 22. Clearance part; 23. Conical part; 24. Flange; 25. Extension part; 26. Anti-slip pattern;

[0031] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0035] refer to Figures 1-6 A clamping mechanism for a threading machine adapter sleeve includes an adapter sleeve body 1 and a movable sleeve 2. An installation channel 11 is provided through the adapter sleeve body 1. The movable sleeve 2 is slidably sleeved on the adapter sleeve body 1. An installation hole 12 is provided on the side wall of the adapter sleeve body 1. A retaining bead 3 is movably disposed in the installation hole 12. An outer opening 13 is formed where the installation hole 12 meets the outer side wall of the adapter sleeve body 1. An inner opening 14 is formed where the installation hole 12 meets the inner side wall of the adapter sleeve body 1. The opening area of ​​the outer opening 13 is greater than or equal to the maximum cross-sectional area of ​​the retaining bead 3. The maximum cross-sectional area of ​​the retaining bead 3 is greater than the opening area of ​​the inner opening 14. The movable sleeve 2 includes a clamping part 21. When the clamping part 21 is located outside the installation hole 12, part of the retaining bead 3 passes through the inner opening 14 and extends into the installation channel 11.

[0036] The mounting channel 11 is used to mount the die head (not shown in the attached figure). When the user drives the movable sleeve 2 to position the clamping part 21 outside the outer opening 13, the clamping part 21 limits the locking bead 3. The locking bead 3 passes through the inner opening 14 and extends into the mounting channel 11 to engage the die head therein. When the user drives the movable sleeve 2 to offset the clamping part 21 from the outer opening 13, the die head therein is unlocked and can be disassembled or replaced, making disassembly and assembly very convenient. Moreover, by using the locking bead 3 to engage the die head, the locking bead 3 is not easily deformed and has the advantage of durability.

[0037] The preferred portion of the mounting channel 11 has an irregular circumferential profile that matches the outer profile of the die head, enabling the mounting channel 11 and the die head to achieve circumferential positioning and making their installation connection more stable; the irregular portion of the mounting channel 11 has a polygonal circumferential profile.

[0038] The preferred number of 3 beads is four, and they are evenly distributed in the circumferential direction.

[0039] The movable sleeve 2 includes a clearance part 22, and a clearance gap 4 is formed between the clearance part 22 and the outer wall of the adapter sleeve body 1; when the retaining bead 3 abuts against the clearance part 22, the center of the retaining bead 3 is still located in the mounting hole 12.

[0040] The setting of the clearance part 22 ensures that the die head can be easily disassembled and assembled, while limiting the maximum distance that the locking ball 3 can move outward. When the user slides the movable sleeve 2 and switches the outer part of the outer opening 13 from the clearance part 22 to the clamping part 21, the inclined surface of the locking ball 3 is pushed and slides inward, making the use smoother.

[0041] refer to Figure 7 The movable sleeve 2 also includes a conical part 23, which is connected to the edge of the clamping part 21 near the avoidance part 22.

[0042] As the user slides the movable sleeve 2 and switches the outer part of the outer opening 13 from the avoidance part 22 to the clamping part 21, the conical part 23 presses the surface of the locking bead 3 to make it slide inward, making the use smoother.

[0043] The movable sleeve 2 includes a flange portion 24, and the adapter sleeve body 1 includes a stop portion 15. The flange portion 24 and the stop portion 15 abut against an elastic member 5.

[0044] The user drives the movable sleeve 2 and compresses the elastic element 5, so that the avoidance part 22 is located outside the outer opening part 13. Then, the user places the die head in a suitable position in the installation channel 11 and releases the movable sleeve 2. The movable sleeve 2 slides under the action of the elastic element 5 until the clamping part 21 is located outside the outer opening part 13, causing the locking ball 3 to automatically lock the die head, making the installation process more convenient.

[0045] The preferred elastic element 5 is a spring.

[0046] The adapter sleeve body 1 includes a baffle portion 16. When the movable sleeve 2 abuts against the baffle portion 16, the elastic member 5 extends to its limit length.

[0047] The baffle part 16 is designed to prevent the movable sleeve 2 from sliding excessively, avoid wasting effort, and further prevent the movable sleeve 2 from detaching from the adapter sleeve body 1.

[0048] The active sleeve 2 includes an extension 25, an elastic element 5 located inside the extension 25, and an anti-slip pattern 26 provided on the extension 25.

[0049] The extension portion 25 covers the elastic element 5, which reduces the erosion of the elastic element 5 by external moisture and dirt to a certain extent, thus extending the service life of the elastic element 5. The anti-slip pattern 26 increases the friction between the user's hand and the movable sleeve 2, making it easier for the user to grip and drive the movable sleeve 2.

[0050] The mounting hole 12 includes an interconnected movable section 121 and a constricted section 122. The constricted section 122 is connected to the inner opening 14. In the direction toward the inside of the adapter sleeve body 1, the cross-sectional area of ​​the constricted section 122 gradually decreases.

[0051] The cross-sectional area of ​​the constricted section 122 gradually decreases towards the mounting channel 11, resulting in a smooth change in the inner diameter of the mounting hole 12. This optimizes the internal structural strength of the mounting hole 12 and reduces the likelihood of the die head becoming loose due to plastic deformation within the mounting hole 12 during use. Preferably, all parts of the constricted section 122 are curved surfaces, and the constricted section 122 smoothly transitions to the inner wall of the movable section 121.

[0052] The 3rd bead is made of steel.

[0053] The 3-bead design features high structural strength and is made of wear-resistant and pressure-resistant materials, extending its service life.

[0054] The following describes the installation process of the die head:

[0055] In this invention, when no external force is applied, the movable sleeve 2 abuts against the retaining plate portion 16 under the action of the elastic member 5. At this time, the clamping portion 21 is located outside the outer opening portion 13 and covers the outer opening portion 13. Some of the retaining beads 3 pass through the inner opening portion 14 and extend into the installation channel 11. (See reference...) Figure 1 , 2 .

[0056] When the user drives the movable sleeve 2 to slide and compress the elastic element 5, causing the clamping part 21 to be misaligned with the outer opening 13, the retaining ball 3 can move outward. At this time, the die head should be installed in the appropriate position in the installation channel 11, referring to... Figure 4 , 5 .

[0057] After the user releases the movable sleeve 2, the movable sleeve 2 slides under the action of the elastic member 5, so that the part outside the outer opening 13 switches from the avoidance part 22 to the clamping part 21. During this process, the conical part 23 presses the surface of the locking bead 3 to make it slide inward. After the clamping part 21 is located outside the outer opening 13 and covers the outer opening 13, part of the locking bead 3 passes through the inner opening 14 and extends into the installation channel 11 to achieve the locking of the die head.

[0058] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A clamping mechanism of a die adapter sleeve of a die sinking machine, comprising a sleeve body (1) and a movable sleeve (2), a mounting channel (11) is provided through the sleeve body (1), characterized in that: The movable sleeve (2) is slidably sleeved on the adapter sleeve body (1), the adapter sleeve body (1) is provided with a mounting hole (12) on the side wall, the mounting hole (12) is movably provided with a clamping bead (3), the mounting hole (12) and the outer side wall of the adapter sleeve body (1) form an outer port portion (13) at the joint, the mounting hole (12) and the inner side wall of the adapter sleeve body (1) form an inner port portion (14) at the joint, the opening area of the outer port portion (13) is greater than or equal to the maximum cross-sectional area of the clamping bead (3), the maximum cross-sectional area of the clamping bead (3) is greater than the opening area of the inner port portion (14), the movable sleeve (2) comprises a clamping portion (21), when the clamping portion (21) is located outside the mounting hole (12), part of the clamping bead (3) penetrates into the mounting channel (11) through the inner port portion (14).

2. A collet chuck for a threading machine according to claim 1, characterized in that: The movable sleeve (2) comprises a clearance portion (22), and a clearance gap (4) is formed between the clearance portion (22) and the outer side wall of the adapter sleeve body (1); when the clamping bead (3) abuts against the clearance portion (22), the center of the clamping bead (3) is still located in the mounting hole (12).

3. A collet chuck for a threading machine according to claim 2, characterized in that: The movable sleeve (2) further comprises a tapered surface portion (23), and the tapered surface portion (23) is connected to one side edge of the clamping portion (21) close to the clearance portion (22).

4. A gripping mechanism for a die adapter of a die sinking machine according to claim 1 or 2 or 3, characterized in that: The movable sleeve (2) comprises a flange portion (24), the adapter sleeve body (1) comprises a stop portion (15), and the flange portion (24) and the stop portion (15) abut against an elastic member (5).

5. A collet chuck for a threading machine according to claim 4, characterized in that: The adapter sleeve body (1) comprises a stop disc portion (16), and when the movable sleeve (2) abuts against the stop disc portion (16), the elastic member (5) is elongated to the limit length.

6. A collet chuck for a threading machine according to claim 5, characterized in that: The movable sleeve (2) comprises an extension portion (25), the elastic member (5) is located inside the extension portion (25), and the extension portion (25) is provided with anti-skid patterns (26).

7. A collet chuck for a tapping machine according to claim 1 or 2 or 3 or 5 or 6, characterized in that: The mounting hole (12) comprises a movable section (121) and a necked section (122) in communication with each other, the necked section (122) is connected to the inner port portion (14), and in the direction towards the inside of the adapter sleeve body (1), the cross-sectional area of the necked section (122) gradually decreases.

8. A collet chuck for a threading machine according to claim 7, characterized in that: The clamping bead (3) is made of steel.

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