Wire-cutting wire tightening device

Abstract

The utility model provides a wire-electrode cutting wire tightening device, which relates to the technical field of wire-electrode cutting wire tightening devices, and comprises a support mechanism, a swing arm type guide wheel mechanism, a ratchet wheel and pawl mechanism and an elastic reset mechanism, the swing arm type guide wheel mechanism is rotatably arranged on the mounting shaft; the elastic reset mechanism is arranged on the mounting shaft and connected with the swing arm type guide wheel mechanism, and when the mounting shaft rotates, the elastic reset mechanism deforms to provide wire tightening force for the wire cutting wire; the ratchet and pawl mechanism is arranged on the mounting shaft and can lock the rotating angle of the mounting shaft; according to the wire tightening device, the elastic reset mechanism is matched with the swing arm type guide wheel mechanism to provide wire tightening force for wire cutting wires and achieve wire tightening on one hand, the installation shaft can be locked to a specified rotation angle according to actual requirements on the other hand, the wire tightening force can be adjusted in a mode of adjusting the elastic restoring force of the elastic reset mechanism, and the wire tightening effect is remarkable.

Description

Technical Field

[0001] The utility model relates to the technical field of wire cutting wire tighteners, in particular to a wire cutting wire tightener. Background Art

[0002] Wire cutting technology is a type of electrospark machining technology, which belongs to the category of electrical machining. It uses conductive metal wire as an electrode and utilizes spark discharge between the metal wire and the workpiece to erode the workpiece material. The instantaneous high temperature of the electric spark can cause local metal to melt, oxidize and corrode. Metal wire is an important component of wire cutting equipment and is indispensable. During the use of wire cutting equipment, in order to ensure the processing effect, it is usually necessary to use a wire tightener to tighten the metal wire.

[0003] The existing wire-cut cantilever tightener is provided with a self-locking device, including a front part and a rear part of the self-locking device. The front part of the self-locking device includes a self-locking button and a self-locking spring, and the rear part of the self-locking device includes a tightening screw, a pressure plate, a self-locking shaft and a finger screw. The cantilever tightener cannot adjust the tightening force, and the tightening effect is poor. Utility Model Content

[0004] The purpose of this utility model is to provide a wire cutting and tightening device to solve the above-mentioned technical problems in the prior art; the preferred technical solution among the many technical solutions provided by this utility model can produce many technical effects; please refer to the following for details.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The utility model provides a wire cutting tensioning device, comprising a supporting mechanism, a swing arm guide wheel mechanism, a ratchet pawl mechanism and an elastic reset mechanism, wherein: the supporting mechanism comprises a rotatable mounting shaft; the swing arm guide wheel mechanism is rotatably disposed on the mounting shaft; the elastic reset mechanism is disposed on the mounting shaft and is connected to the swing arm guide wheel mechanism, when the mounting shaft rotates, the elastic reset mechanism is deformed to generate an elastic restoring force and acts on the swing arm guide wheel mechanism to provide a tightening force for the wire cutting wire; the ratchet pawl mechanism is disposed on the mounting shaft, and the ratchet pawl mechanism can lock the rotation angle of the mounting shaft.

[0007] Preferably, the supporting mechanism comprises a supporting frame, and the mounting shaft is rotatably disposed on the supporting frame.

[0008] Preferably, the support frame is provided with a mounting cavity, the mounting shaft passes through the mounting cavity, and the swing arm guide wheel mechanism and the elastic reset mechanism are arranged in the mounting cavity.

[0009] Preferably, the swing arm type guide wheel mechanism includes a swing arm and a first guide wheel, wherein: the first end of the swing arm is rotatably arranged on the mounting shaft; the first guide wheel is arranged at the second end of the swing arm, and the first guide wheel swings synchronously with the swing arm.

[0010] Preferably, a second guide wheel is provided on the support mechanism.

[0011] Preferably, the first guide wheel and the second guide wheel both include a cylinder and a wheel body, wherein: the wheel body is arranged at the end of the cylinder, and a circumferential groove for the wire cutting wire to pass through is provided on the peripheral wall of the wheel body; the cylinder is used for installation.

[0012] Preferably, the ratchet and pawl mechanism includes a ratchet and a pawl, wherein: the ratchet is sleeved on the mounting shaft and rotates synchronously with the mounting shaft; the pawl is rotatably arranged on the support frame; the ratchet is engaged with the pawl, and the ratchet can rotate unidirectionally relative to the pawl.

[0013] Preferably, the elastic reset mechanism includes an elastic member, wherein: the elastic member is sleeved on the mounting shaft and connected to the swing arm guide wheel mechanism; when the mounting shaft rotates relative to the support frame, the elastic member is deformed.

[0014] Preferably, the wire cutting tensioning device includes a locking mechanism, which is arranged on the swing arm guide wheel mechanism and swings synchronously with the swing arm guide wheel mechanism; a locking part is provided on the support frame at a position corresponding to the locking mechanism; when the swing arm guide wheel mechanism is in the initial position, the locking mechanism is locked with the locking part.

[0015] Preferably, the locking mechanism includes a lock buckle, and the lock buckle is rotatably arranged on the swing arm guide wheel mechanism; the locking portion is arranged as a locking groove, and the locking groove is adapted to the lock buckle.

[0016] The wire cutting and tightening device provided by the utility model has at least the following beneficial effects:

[0017] The wire cutting and tightening device includes a support mechanism, a swing arm guide wheel mechanism, a ratchet pawl mechanism and an elastic reset mechanism. The support mechanism includes a rotatable mounting shaft, which is used for installing the swing arm guide wheel mechanism, the ratchet pawl mechanism and the elastic reset mechanism.

[0018] The swing arm guide wheel mechanism is rotatably arranged on the installation shaft, and the swing arm guide wheel mechanism realizes the tensioning of the wire cutting wire by swinging relative to the installation shaft.

[0019] The elastic reset mechanism is arranged on the installation shaft and is connected to the swing arm guide wheel mechanism. When tightening the wire, the installation shaft rotates a certain angle to cause the elastic reset mechanism to deform, and the generated elastic restoring force acts on the swing arm guide wheel mechanism, thereby generating a tightening force for the wire cutting wire.

[0020] The ratchet pawl mechanism is arranged on the installation shaft. When adjusting the tightening force, the installation shaft is rotated, and the ratchet pawl mechanism rotates in one direction. When the installation shaft rotates to a specified angle, it stops. The elastic restoring force generated by the elastic reset mechanism causes the ratchet pawl mechanism to be firmly locked. During this process, the greater the rotation angle of the installation shaft, the greater the tightening force.

[0021] The utility model uses an elastic reset mechanism, which, on the one hand, cooperates with a swing-arm guide wheel mechanism to provide a tightening force for the wire cutting wire to achieve tightening. On the other hand, it can lock the installation shaft to a specified rotation angle according to actual needs to adjust the elastic restoring force of the elastic reset mechanism, thereby achieving adjustment of the tightening force, and the tightening effect is significant. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a structural diagram of the utility model from one perspective;

[0024] Figure 2 It is a structural schematic diagram of the utility model from another perspective;

[0025] Figure 3 It is a structural diagram of the utility model from another perspective;

[0026] Figure 4 This is a schematic diagram of the assembly of the swing arm type guide wheel mechanism of the utility model;

[0027] Figure 5 This is the original structural diagram of the swing arm guide wheel mechanism of the utility model;

[0028] Figure 6 It is a structural schematic diagram of the first guide wheel / second guide wheel of the utility model.

[0029] Reference numerals

[0030] 1. Support mechanism; 11. Support frame; 111. Mounting cavity; 112. Locking portion; 12. Second guide wheel; 13. Mounting shaft; 2. Swing arm guide wheel mechanism; 21. Swing arm; 22. First guide wheel; 221. Column; 222. Wheel body; 223. Circumferential groove; 3. Ratchet and pawl mechanism; 31. Ratchet; 32. Pawl; 4. Elastic reset mechanism; 41. Elastic member; 5. Locking mechanism; 51. Lock. DETAILED DESCRIPTION

[0031] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0032] Example 1:

[0033] The utility model provides a wire cutting and tightening device, referring to Figures 1 to 6 As shown, the wire cutting and tightening device includes a support mechanism 1, a swing arm guide wheel mechanism 2, a ratchet pawl mechanism 3 and an elastic reset mechanism 4.

[0034] The support mechanism 1 includes a rotatable mounting shaft 13, and the swing-arm guide wheel mechanism 2 is rotatably mounted on the mounting shaft 13; the elastic reset mechanism 4 is arranged on the mounting shaft 13 and is connected to the swing-arm guide wheel mechanism 2. When the mounting shaft 13 rotates, the elastic reset mechanism 4 is deformed; the ratchet pawl mechanism 3 is arranged on the mounting shaft 13 and is connected to the swing-arm guide wheel mechanism 2. The ratchet pawl mechanism 3 rotates in the forward direction and engages in the reverse direction.

[0035] When tightening the wire, the mounting shaft 13 rotates a certain angle, causing the elastic reset mechanism 4 to deform, thereby generating an elastic restoring force. The elastic restoring force acts on the swing arm guide wheel mechanism 2, which provides a tightening force for the wire cutting wire to achieve tightening.

[0036] When adjusting the tightening force, the mounting shaft 13 is rotated forward, the ratchet pawl mechanism 3 rotates forward, and the elastic reset mechanism 4 is deformed until the mounting shaft 13 rotates to a specified angle and stops. At this time, the elastic reset mechanism 4 in the deformed state generates an elastic restoring force, and the direction of the elastic restoring force acting on the mounting shaft 13 is in the opposite direction, so that the ratchet pawl mechanism 3 is firmly maintained in the engaged state, thereby firmly locking the rotation angle of the mounting shaft 13 and realizing the adjustment of the tightening force.

[0037] During the above adjustment process, the greater the rotation angle of the installation shaft 13 is, the greater the elastic restoring force of the elastic member 41 and the tightening force are.

[0038] The present invention uses an elastic reset mechanism 4 to cooperate with the swing arm guide wheel mechanism 2 to provide a tightening force for the wire cutting wire to achieve tightening. On the other hand, it can lock the installation shaft 13 to a specified rotation angle according to actual needs to adjust the elastic restoring force of the elastic reset mechanism 4 to achieve the adjustment of the tightening force, and the tightening effect is significant.

[0039] Example 2:

[0040] Example 2 is based on Example 1:

[0041] like Figures 1 to 6 As shown, the support mechanism 1 includes a support frame 11, and the installation shaft 13 is rotatably set on the support frame 11. The end of the installation shaft 13 is provided with a shaft neck, which is clamped by auxiliary tools such as a wrench to facilitate the rotation operation of the installation shaft 13.

[0042] As an optional embodiment, the support frame 11 includes an upper mounting plate and a lower mounting plate that are arranged opposite to each other, and a mounting cavity 111 is formed between the upper mounting plate and the lower mounting plate.

[0043] The installation shaft 13 passes through the installation clamp cavity 111, and the swing arm guide wheel mechanism 2 and the elastic reset mechanism 4 are arranged in the installation clamp cavity 111, so that the structure is more compact.

[0044] As an optional embodiment, the swing arm type guide wheel mechanism 2 includes a swing arm 21 and a first guide wheel 22 .

[0045] The first end of the swing arm 21 is rotatably set on the mounting shaft 13 through a bearing, and the swing arm 21 can rotate relative to the mounting shaft 13. The second end of the swing arm 21 is provided with a first mounting hole, and the first guide wheel 22 is installed in the first mounting hole. During the wire tightening process, the first guide wheel 22 tightens the wire cutting wire along with the swing arm 21.

[0046] As an optional embodiment, a second mounting hole is provided on the support frame 11 , and a second guide wheel 12 is installed in the second mounting hole.

[0047] On the one hand, the second guide wheel 12 has a guiding function to guide the direction of the wire cutting wire, and on the other hand, it cooperates with the first guide wheel 22 to achieve a significant wire tightening effect.

[0048] As an optional embodiment, the first guide wheel 22 and the second guide wheel 12 both include a column 221 and a wheel body 222 , and the wheel body 222 is disposed at the end of the column 221 .

[0049] An annular circumferential groove 223 is provided on the peripheral wall of the wheel body 222 . The circumferential groove 223 is adapted to the wire cutting wire. The wire cutting wire passes through the circumferential groove 223 . The column 221 is used for installing the guide wheel.

[0050] As an optional embodiment, the ratchet and pawl mechanism 3 includes a ratchet 31 and a pawl 32 .

[0051] The ratchet 31 is sleeved on the mounting shaft 13 and rotates synchronously with the mounting shaft 13 . The ratchet 31 is located at the lower side of the support frame 11 .

[0052] The pawl 32 is rotatably mounted on the bottom of the support frame 11 via a mounting member. The pawl 32 engages with the ratchet wheel 31 , and the ratchet wheel 31 can rotate in one direction relative to the pawl 32 .

[0053] When the rotation angle adjustment of the mounting shaft 13 is completed, the elastic reset mechanism 4 in the deformed state generates an elastic restoring force acting on the mounting shaft 13, prompting it to pre-rotate. The direction of the pre-rotation is opposite to the unidirectional rotation direction of the ratchet 31 relative to the pawl 32. In this way, the engagement state of the ratchet 31 and the pawl 32 is more stable, thereby ensuring the tightening force adjustment effect.

[0054] As an optional embodiment, the elastic reset mechanism 4 includes an elastic member 41, which can be a spring or a torsion spring; the elastic member 41 is sleeved on the mounting shaft 13, and its end is mounted on the bottom side of the swing arm 21 through a threaded fastener.

[0055] When the mounting shaft 13 rotates relative to the support frame 11 , the elastic member 41 is deformed.

[0056] In actual application, the greater the rotation angle of the installation shaft 13 is, the greater the deformation state of the elastic member 41 is, the greater the elastic restoring force generated is, and the greater the tightening force is.

[0057] When the pawl 32 is pushed to separate the ratchet wheel 31 from the pawl 32 , the elastic member 41 in the deformed state can drive the mounting shaft 13 to return to its original position.

[0058] As an optional embodiment, the wire cutting and tightening device includes a locking mechanism 5 , which is provided on the swing arm 21 and swings synchronously with the swing arm 21 .

[0059] A locking portion 112 is provided on the support frame 11 at a position corresponding to the locking mechanism 5 , and the locking portion 112 is adapted to the locking mechanism 5 .

[0060] When the swing arm 21 rotates to the initial position toward the second guide wheel 12 under the drive of the elastic reset mechanism 4, the locking mechanism 5 can lock with the locking portion 112, thereby locking the swing arm 21 to the initial state.

[0061] As an optional embodiment, the locking mechanism 5 includes a lock buckle 51 , which is rotatably arranged on the swing arm guide wheel mechanism 2 ; the locking portion 112 is arranged as a locking groove, which is adapted to the lock buckle 51 .

[0062] The lock buckle 51 and the locking groove cooperate with each other, the structure is simple, and the locking effect is significant.

[0063] In the description of this application, it should be understood that the terms "upper", "lower", "inside", "outside", "top", "bottom", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout the description of this application, "plurality" or "several" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0065] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; they can refer to direct connection or indirect connection through an intermediate medium; they can refer to internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0066] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A wire cutting and tightening device, characterized in that: It includes a support mechanism, a swing arm guide wheel mechanism, a ratchet pawl mechanism and an elastic reset mechanism, wherein: The support mechanism includes a rotatable mounting shaft; The swing arm guide wheel mechanism can be rotatably arranged on the mounting shaft; The elastic reset mechanism is arranged on the installation shaft and is connected to the swing arm guide wheel mechanism. When the installation shaft rotates, the elastic reset mechanism is deformed to generate elastic restoring force and acts on the swing arm guide wheel mechanism to provide a tightening force for the wire cutting wire. The ratchet and pawl mechanism is arranged on the installation shaft, and the ratchet and pawl mechanism can lock the rotation angle of the installation shaft.

2. The wire cutting and tightening device according to claim 1, characterized in that: The supporting mechanism comprises a supporting frame, and the mounting shaft is rotatably arranged on the supporting frame.

3. The wire cutting and tightening device according to claim 2, characterized in that: The support frame is provided with an installation clamping cavity, the installation shaft passes through the installation clamping cavity, and the swing arm guide wheel mechanism and the elastic reset mechanism are arranged in the installation clamping cavity.

4. The wire cutting and tightening device according to claim 1, characterized in that: The swing arm type guide wheel mechanism includes a swing arm and a first guide wheel, wherein: The first end of the swing arm is rotatably disposed on the mounting shaft; The first guide wheel is arranged at the second end of the swing arm, and the first guide wheel swings synchronously with the swing arm.

5. The wire cutting and tightening device according to claim 4, characterized in that: The supporting mechanism is provided with a second guide wheel.

6. The wire cutting and tightening device according to claim 5, characterized in that: The first guide wheel and the second guide wheel each include a column and a wheel body, wherein: The wheel body is arranged at the end of the column, and a circumferential groove for the wire cutting wire to pass through is provided on the peripheral wall of the wheel body; The column is used for installation.

7. The wire cutting and tightening device according to claim 2, characterized in that: The ratchet and pawl mechanism comprises a ratchet and a pawl, wherein: The ratchet is sleeved on the mounting shaft and rotates synchronously with the mounting shaft; The pawl is rotatably arranged on the support frame; The ratchet is engaged with the pawl, and the ratchet can rotate in one direction relative to the pawl.

8. The wire cutting and tightening device according to claim 2, characterized in that: The elastic reset mechanism includes an elastic member, wherein: The elastic member is sleeved on the mounting shaft and connected to the swing arm guide wheel mechanism; When the installation shaft rotates relative to the support frame, the elastic member is deformed.

9. The wire cutting and tightening device according to claim 2, characterized in that: The wire cutting and tightening device includes a locking mechanism, which is arranged on the swing arm guide wheel mechanism and swings synchronously with the swing arm guide wheel mechanism; A locking portion is provided on the support frame at a position corresponding to the locking mechanism; When the swing arm guide wheel mechanism is located at the initial position, the locking mechanism is locked with the locking portion.

10. The wire cutting and tightening device according to claim 9, characterized in that: The locking mechanism includes a lock buckle, and the lock buckle is rotatably arranged on the swing arm guide wheel mechanism; The locking portion is configured as a locking groove, and the locking groove is adapted to the lock buckle.

Images