Mechanical gear shift replacing mechanism of die head threading machine

Abstract

The utility model discloses a mechanical gear shift changing mechanism of a die head threading machine, which comprises a shift adjusting component, the shift adjusting component comprises a knob, a support frame, a spacer pin, a spring and a shifting piece, a clutch component further comprises a clamping groove, the shifting piece is inserted into the clamping groove for limiting, and the shifting piece is arranged in the clamping groove. The shifting piece moves up and down to drive the clutch assembly to move up and down; the output assembly comprises a first-gear output tooth and a second-gear output tooth, the output assembly is arranged on the output shaft in a sleeving mode, cannot move and is not in transmission relation with the output shaft, and the clutch assembly can be separated from the first-gear output tooth and the second-gear output tooth through vertical movement and can abut against the first-gear output tooth and the second-gear output tooth for limiting. The utility model has the beneficial effects that the gear can be adjusted when the gear does not run, the spring is used for providing an avoiding space and pressure, and the gear can slide into the gear when the gear runs, so that mechanical parts are prevented from being damaged when the gear is used, and the gear can be flexibly adjusted when equipment runs and stops.

Description

Technical Field

[0001] The utility model relates to the technical field of replacing gear positions of a threading machine, in particular to a mechanical gear position replacing mechanism of a threading machine. Background Art

[0002] The threading machine is an electric tool used to process the external thread of the pipe. It is also called an electric threading machine, an electric pipe cutting and threading machine, a wire twisting machine or a pipe threading machine. It is a mechanical device mainly used to process the thread into parts of fixed length. Generally, it can be divided into two types: manual and automatic. The manual threading machine requires the operator to manually turn the workpiece to complete the thread processing, while the automatic threading machine automatically performs these operations, which is more efficient. In practical applications, it is mainly used in mechanical processing industries such as turning machine tools and grinding equipment. The gear position needs to be changed to meet different actual processing needs. For example, when processing workpieces with larger diameters and shorter lengths, the fast gear can be selected to make the machine rotate faster and improve the processing efficiency. When processing workpieces with smaller diameters and longer lengths, higher precision and stability are required. At this time, the slow gear can be selected to slow down the machine's rotation speed and improve the processing accuracy. At present, the gear shifting of the threading machine, whether manual or automatic, requires manual shifting. The gear shifting operation needs to be performed when the equipment is running or stopped, so it is not flexible enough. It is necessary to provide a new mechanical gear shifting and sliding gear structure. Utility Model Content

[0003] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0004] In view of the above existing problems, the present utility model is proposed.

[0005] Therefore, the technical problem solved by the utility model is to provide a mechanical gear shift changing mechanism for a threading machine.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a mechanical gear shift changing mechanism of a threading machine, comprising a shifting assembly, the shifting assembly comprising a knob, a support frame, a limit pin, a spring and a paddle, the support frame comprising a shifting portion arranged at the top and a limit portion extending to one side thereof, the knob being arranged on the shifting portion, the limit pin being fixed after passing through the upper and lower limit portions, the paddle being slidably arranged on the limit pin, and the upper and lower ends of the paddle being in contact with the spring, the spring and the upper and lower ends of the paddle being in contact with the spring, The clutch assembly is connected to the output shaft and rotates synchronously, the clutch assembly also includes a slot, the paddle is inserted into the slot for limiting, and the up and down displacement of the paddle can drive the up and down movement of the clutch assembly; the output assembly includes a first-gear output tooth and a second-gear output tooth, the output assembly is sleeved on the output shaft and cannot move and has no transmission relationship with the output shaft, and the clutch assembly can be separated and interfered with the first-gear output tooth and the second-gear output tooth by moving up and down.

[0007] Preferably, it also includes a driven component; the driven component includes a driven shaft, first-gear driven teeth and second-gear driven teeth arranged on the driven shaft, the first-gear driven teeth and the first-gear output teeth are meshed with each other for transmission, and the second-gear driven teeth and the second-gear output teeth are meshed with each other for transmission.

[0008] Preferably, the shifting portion is provided with an elongated hole, and the knob is provided with an eccentric column, which is embedded in the elongated hole and can be driven to rotate by rotating the knob.

[0009] Preferably, the clutch assembly further includes a protruding portion, a limiting groove and an axial hole; the protruding portion is respectively protrudingly arranged on the top surface and the bottom surface of the clutch assembly, the axial hole is sleeved with the output shaft, the limiting groove is arranged on the inner surface of the axial hole, and a limit block is arranged on the output shaft and embedded in the limiting groove, and the output shaft and the clutch assembly are restricted and positioned by the limiting groove and can rotate synchronously.

[0010] Preferably, an arc groove and an abutment portion are provided on the protruding portion, and a movable space is formed between the protruding portion and the top and bottom surfaces of the clutch assembly.

[0011] Preferably, the output assembly further includes an engagement block; the engagement blocks are respectively arranged on the bottom surface of the first-gear output tooth and the top surface of the second-gear output tooth; after the clutch assembly conflicts with the output assembly, the engagement block can rotate along the activity space and fall into the arc groove and conflict with the conflicting portion to limit the position.

[0012] Preferably, the protrusions are symmetrically arranged on the top surface and the bottom surface of the clutch assembly respectively.

[0013] Preferably, the number of the abutting parts and the number of the movable spaces are both symmetrically arranged, and the number of the arc-shaped grooves is symmetrically arranged at two ends of the abutting part.

[0014] Preferably, the two engaging blocks are also symmetrically arranged.

[0015] The beneficial effects of the utility model are as follows: the gear position can be adjusted when the gear is not running, and the spring provides avoidance space and pressure. At the same time, it can slide into the gear position when running to avoid damage to mechanical parts during use. The gear position can be flexibly adjusted whether the equipment is running or stopped. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0017] Figure 1 This is a schematic diagram of the overall structure of the mechanical gear shifting mechanism of the utility model;

[0018] Figure 2 This is a structural schematic diagram of the mechanical gear shifting mechanism of the utility model from one viewing angle;

[0019] Figure 3 It is a schematic diagram of the exploded structure of the mechanical gear shifting mechanism of the utility model;

[0020] Figure 4 This is a structural schematic diagram of the gear shifting assembly of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the clutch assembly of the utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the output assembly of the utility model;

[0023] Figure 7 This is a schematic structural diagram of the mechanical gear shifting mechanism of the utility model from another perspective;

[0024] Figure 8 This is another perspective structural schematic diagram of the mechanical gear shifting mechanism of the utility model. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the utility model, but not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary persons in the field without creative work should fall within the scope of protection of the utility model.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0028] The utility model is described in detail with reference to the schematic diagram. When describing the embodiments of the utility model, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagrams are only examples, which should not limit the scope of protection of the utility model. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0029] At the same time, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower, inner and outer" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first, second or third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] In this utility model, unless otherwise clearly specified and limited, the terms "install, connect, connect" should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection or an integral connection; it can also be a mechanical connection, an electrical connection or a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0031] Example 1

[0032] Reference Figure 1-8 As shown in the figure, in order to realize that the gear of the threading machine can be flexibly adjusted whether the equipment is running or stopped, that is, the gear can also be adjusted when the gear is not running, and the spring is used to provide avoidance space and pressure. At the same time, it can slide into the gear during operation to avoid damage to mechanical parts during use. This embodiment proposes a mechanical gear gear changing mechanism for the threading machine, including a gear adjustment component 100, a clutch component 200, an output component 300 and a driven component 400. The clutch component 200 is connected to the output component 300, and the clutch and engagement of different gears are realized by the up and down movement of the clutch component 200. The driven component 400 is connected to the output component 300 to transmit the power output by the output component 300. The gear adjustment component 100 is used to drive the up and down movement of the clutch component 200 through manual operation to realize the gear shifting operation.

[0033] To be more specific, the gear shifting assembly 100 includes a knob 101, a support frame 102, a limit pin 103, a spring 104 and a paddle 105. The support frame 102 includes a gear shifting portion 102a arranged at the top and a limit portion 102b extending to one side thereof. The knob 101 is arranged on the gear shifting portion 102a, the limit pin 103 passes through the upper and lower limit portions 102b and is fixed, the paddle 105 is slidably arranged on the limit pin 103, and the upper and lower ends of the paddle 105 abut against the spring 104, and the spring 104 abuts against the limit portions 102b at the upper and lower ends. It should be noted that the shifting portion 102a is the portion of the support frame 102 extending upward, and the limiting portion 102b is four symmetrically arranged extending portions, the limiting pins 103 on both sides are inserted into the limiting portion 102b from top to bottom, and the paddle 105 is limited by the limiting pins 103 and can slide up and down along the limiting pins 103, and the spring 104 is inserted into the limiting pins 103, contacting the paddle 105 up and down, so that the paddle 105 is subjected to the elastic force of the spring 104 during the up and down displacement, playing a role similar to damping.

[0034] In this embodiment, in order to achieve the adjustment of the knob 101 and thus drive the paddle 105 to move up and down, a long hole 102a-1 is provided on the gear adjustment portion 102a, and an eccentric column 101a is provided on the knob 101. The eccentric column 101a is embedded in the long hole 102a-1, and the rotation of the knob 101 can drive the rotation of the eccentric column 101a. It is not difficult to understand that the column cross-section of the eccentric column 101a is an eccentric circle, and the groove width of the long hole 102a-1 is the longest radius of the eccentric column 101a, that is, when the eccentric column 101a is located in the long hole 102a-1 and rotates to a position that does not reach the longest radius, there is a gap between the eccentric column 101a and the long hole 102a-1. At this time, the support frame 102 provides avoidance space and pressure in the form of elastic force due to the action of the spring 104, and can slide into the gear position during operation, which can be set as the initial gear position. When the eccentric column 101a rotates to the widest position of the long hole 102a-1, the eccentric column 101a contacts the groove edge of the long hole 102a-1 up and down. At this time, the support frame 102 is pushed upward, which is the maximum displacement stroke. This position is locked by the knob 101 and set to a gear. In layman's terms, the eccentric column 101a is located in the long hole 102a-1 and performs eccentric motion, driving the support frame 102 to reciprocate up and down to achieve gear adjustment.

[0035] The clutch assembly 200 is axially connected to the output shaft 201 and rotates synchronously; the clutch assembly 200 also includes a slot 202, and the paddle 105 is inserted into the slot 202 to limit the position, and the up and down displacement of the paddle 105 can drive the up and down movement of the clutch assembly 200. It should be noted here that the clutch assembly 200 and the output shaft 201 are in a synchronous rotation relationship, and the paddle 105 is inserted into the slot 202, and the slot 202 rotates synchronously with the clutch assembly 200, so the paddle 105 moves in the horizontal direction in the slot 202, but the role of the paddle 105 and the clutch assembly 200 is to move the clutch assembly 200 up and down.

[0036] Furthermore, in order to achieve synchronous rotation between the clutch assembly 200 and the output shaft 201, the clutch assembly 200 also includes a protrusion 203, a limiting groove 204 and an axial hole 205; wherein the protrusion 203 is respectively protrudingly arranged on the top and bottom surfaces of the clutch assembly 200, the axial hole 205 is sleeved with the output shaft 201, the limiting groove 204 is arranged on the inner surface of the axial hole 205, and a limit block is arranged on the output shaft 201 to be embedded in the limiting groove 204, and the output shaft 201 and the clutch assembly 200 are restricted by the limiting groove 204 to be able to rotate synchronously. In layman's terms, the clutch assembly 200 is sleeved on the output shaft 201. If there is no unlimited structure, the output shaft 201 cannot drive the clutch assembly 200 to rotate when it rotates. Therefore, in this embodiment, a limit block is arranged on the output shaft 201 to be embedded in the limiting groove 204 to achieve synchronous rotation between the clutch assembly 200 and the output shaft 201.

[0037] The output assembly 300 includes a first gear output tooth 301 and a second gear output tooth 302. The output assembly 300 is sleeved on the output shaft 201 and cannot move and has no transmission relationship with the output shaft 201. The clutch assembly 200 can be separated and limited by the first gear output tooth 301 and the second gear output tooth 302 by moving up and down. The driven assembly 400 includes a driven shaft 401, a first gear driven tooth 402 and a second gear driven tooth 403 arranged on the driven shaft 401, and the first gear driven tooth 402 is meshed with the first gear output tooth 301, and the second gear driven tooth 403 is meshed with the second gear output tooth 302.

[0038] Refer again Figure 5-6 As shown in the figure, in this embodiment, in order to realize the clutch of the first gear output tooth 301 and the second gear output tooth 302 with the clutch assembly 200, an arc groove 203a and a contact portion 203b are provided on the protrusion 203, and the top and bottom surfaces of the protrusion 203 and the clutch assembly 200 form an activity space 203c. The output assembly 300 also includes an engagement block 303; the bottom surface of the first gear output tooth 301 and the top surface of the second gear output tooth 302 are respectively provided with engagement blocks 303. After the clutch assembly 200 and the output assembly 300 are in contact, the engagement block 303 can rotate along the activity space 203c and fall into the arc groove 203a and contact the contact portion 203b to limit the position. It should also be noted that, according to the above description of the adjustment knob 101 driving the up and down movement of the paddle 105, when the adjustment knob 101 is in the initial gear position, it can be flexibly set to conflict with the second gear output tooth 302 through the spring 104. When the adjustment knob 101 is rotated to the maximum stroke, it conflicts with the first gear output tooth 301 to output another gear, that is, the function of 2-gear adjustment is realized. Of course, it is not difficult to understand that the elastic force of the spring 104 provides the possibility of the paddle 105 staying at any position, that is, the stop position of the clutch assembly 200.

[0039] At the same time, when the first gear output teeth 301 and the second gear output teeth 302 do not conflict with the clutch assembly 200, there is no transmission relationship between the two and the output shaft 201, that is, the rotation of the output shaft 201 cannot drive the rotation of the first gear output teeth 301 and the second gear output teeth 302. Only when the clutch assembly 200 conflicts with the first gear output teeth 301 or the second gear output teeth 302, the engagement block 303 rotates along the active space 203c and falls into the arc groove 203a and conflicts with the conflicting portion 203b. At this time, the rotation of the output shaft 201 drives the rotation of the first gear output teeth 301 or the second gear output teeth 302. When the clutch assembly 200 does not conflict with the first gear output teeth 301 or the second gear output teeth 302, power transmission is lost, and the clutch assembly 200 and the first gear output teeth 301 or the second gear output teeth 302 are realized.

[0040] As a preferred solution of this embodiment, the protrusions 203 are symmetrically arranged on the top and bottom surfaces of the clutch assembly 200. There are two abutment portions 203b and two movable spaces 203c, which are symmetrically arranged. There are two arc-shaped grooves 203a, which are symmetrically arranged at both ends of the abutment portion 203b. There are also two engagement blocks 303, which are symmetrically arranged.

[0041] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. The embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and therefore it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0042] It should also be understood that the present invention is described through implementation methods, and the embodiments are only clear and complete descriptions of the technical solutions proposed in the claims of the present invention, that is, explanations of the claims. Therefore, when judging whether the technical solutions recorded in the specification of the present invention are sufficiently disclosed, full consideration should be given to the core essence of the solutions defined by the claims. In the specification, there must be other technical problems that are not related to the core technical problems proposed in this embodiment, and their corresponding technical features and technical solutions do not belong to the essence of this embodiment and are non-essential technical features. Therefore, they can be referred to as implicit disclosures. Those skilled in the art can fully implement them in combination with existing technologies and common knowledge, so there is no need to describe them in detail.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A mechanical gear shifting mechanism for a threading machine, characterized in that: include, A gear shifting assembly (100), the gear shifting assembly (100) comprising a knob (101), a support frame (102), a stop pin (103), a spring (104) and a paddle (105), the support frame (102) comprising a gear shifting portion (102a) arranged at the top and a stop pin (102b) extending to one side thereof, the knob (101) being arranged on the gear shifting portion (102a), the stop pin (103) passing through the upper and lower stop pins (102b) and then being fixed, the paddle (105) being slidably arranged on the stop pin (103), and the upper and lower ends of the paddle (105) abut against the spring (104), and the spring (104) abuts against the stop pins (102b) at the upper and lower ends; A clutch assembly (200), the clutch assembly (200) being axially connected to an output shaft (201) and rotating synchronously, the clutch assembly (200) further comprising a slot (202), the paddle (105) being inserted into the slot (202) for limiting position, and the up and down displacement of the paddle (105) can drive the up and down movement of the clutch assembly (200); An output assembly (300) comprising a first-gear output tooth (301) and a second-gear output tooth (302); the output assembly (300) is sleeved on the output shaft (201) and cannot move and has no transmission relationship with the output shaft (201); the clutch assembly (200) can be separated from and limited by the first-gear output tooth (301) and the second-gear output tooth (302) by moving up and down.

2. The mechanical gear shift changing mechanism of the threading machine according to claim 1, characterized in that: Also included is a driven assembly (400); The driven assembly (400) comprises a driven shaft (401), first-gear driven teeth (402) and second-gear driven teeth (403) arranged on the driven shaft (401), the first-gear driven teeth (402) being meshed with the first-gear output teeth (301), and the second-gear driven teeth (403) being meshed with the second-gear output teeth (302).

3. The mechanical gear shift changing mechanism of the threading machine according to claim 1, characterized in that: The gear adjustment portion (102a) is provided with an elongated hole (102a-1), and the knob (101) is provided with an eccentric column (101a). The eccentric column (101a) is embedded in the elongated hole (102a-1), and the eccentric column (101a) can be driven to rotate by rotating the knob (101).

4. The mechanical gear shift changing mechanism of the threading machine according to claim 1, characterized in that: The clutch assembly (200) further comprises a protruding portion (203), a limiting groove (204) and an axial hole (205); The protrusions (203) are respectively protrudingly arranged on the top surface and the bottom surface of the clutch assembly (200); the shaft hole (205) is sleeved with the output shaft (201); the limiting groove (204) is arranged on the inner surface of the shaft hole (205); and a limit block is arranged on the output shaft (201) and is embedded in the limit groove (204); the output shaft (201) and the clutch assembly (200) are restricted by the limit groove (204) to rotate synchronously.

5. The mechanical gear shift changing mechanism of the threading machine according to claim 4, characterized in that: The protruding portion (203) is provided with an arc-shaped groove (203a) and a resisting portion (203b), and the protruding portion (203) and the top and bottom surfaces of the clutch assembly (200) form an activity space (203c).

6. The mechanical gear shift changing mechanism of the threading machine according to claim 5, characterized in that: The output assembly (300) further includes a coupling block (303); The engaging blocks (303) are respectively arranged on the bottom surface of the first-gear output tooth (301) and the top surface of the second-gear output tooth (302); after the clutch assembly (200) contacts the output assembly (300), the engaging blocks (303) can rotate along the activity space (203c) and fall into the arc-shaped groove (203a) and contact the contact portion (203b) to limit the position.

7. The mechanical gear shift changing mechanism of the threading machine according to claim 4, characterized in that: The protrusions (203) are symmetrically arranged on the top surface and the bottom surface of the clutch assembly (200).

8. The mechanical gear shift changing mechanism of the threading machine according to claim 5, characterized in that: The number of the abutting portion (203b) and the number of the movable space (203c) are both symmetrically arranged, and the number of the arc-shaped grooves (203a) is symmetrically arranged at both ends of the abutting portion (203b).

9. The mechanical gear shift changing mechanism of the threading machine according to claim 6, characterized in that: The two engaging blocks (303) are also symmetrically arranged.

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