CN213624684U - Electronic wire clamping device capable of automatically adjusting wire tension - Google Patents

Abstract

The utility model provides an electronic wire clamping device capable of automatically adjusting wire tension, which comprises a wire clamping component, wherein the wire clamping component comprises a wire clamping seat, a wire clamping shaft fixed in the wire clamping seat, a positioning piece fixed on the wire clamping shaft, and a first wire clamping piece and a second wire clamping piece which are movably sleeved on the wire clamping shaft, and the first wire clamping piece and the second wire clamping piece are distributed between the wire clamping seat and the positioning piece; the electronic wire clamping device further comprises a driving motor, a transmission unit and a push rod parallel to the wire clamping shaft, the driving motor drives the push rod to move through the transmission unit, and a pushing portion connected with the push rod is arranged on the first wire clamping piece. This application adopts driving motor as the driving source, and driving motor's output is controllable for driving motor passes through the controllable amount of movement of drive unit drive push rod axial displacement, can control the distance that the push rod drove first thread clamping piece and remove from this accurately, thereby can adjust the line tension that thread clamping component applyed the suture accurately, improve the sewing quality.

Description

Electronic wire clamping device capable of automatically adjusting wire tension

Technical Field

The utility model relates to a sewing machine field especially relates to an automatic adjust tensile electron thread trapper device of line.

Background

At present, an electronic thread clamping device is arranged on a shell of a sewing machine, the electronic thread clamping device is provided with two thread clamping sheets, a suture passes through the middle of the two thread clamping sheets, and a driving source of the electronic thread clamping device is an electromagnet. When the wire is clamped, the electromagnet acts and tends to clamp the two wire clamping sheets, so that the wire clamping action is executed; when the thread is loosened, the electromagnet resets, and the two thread clamping sheets reset under the action of the reset spring, so that the thread loosening action is executed. However, the electronic wire gripper device using the electromagnet as the driving source has the following drawbacks:

1. when the electromagnet acts, the stroke of the electromagnet is a fixed stroke, and the stroke for pushing the thread clamping sheet to move is also fixed, so that the thread tension applied to the suture by the electronic thread clamping device is uncontrollable and nonlinear, namely the thread tension applied to the suture cannot be adjusted, and different sewing requirements cannot be well met.

2. The control accuracy of the electromagnet will be attenuated after long-time operation, resulting in unstable line tension applied to the sewing line.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings of the prior art, the to-be-solved technical problem of the present invention is to provide an electronic wire clamping device capable of adjusting wire tension automatically, which can adjust the wire tension applied to a suture accurately.

In order to achieve the above object, the present invention provides an electronic thread tension clamping device capable of automatically adjusting thread tension, comprising a thread clamping assembly, wherein the thread clamping assembly comprises a thread clamping seat fixed on a sewing machine housing, a thread clamping shaft fixed in the thread clamping seat, a positioning member fixed on the thread clamping shaft, and a first thread clamping piece and a second thread clamping piece which are movably sleeved on the thread clamping shaft, and the first thread clamping piece and the second thread clamping piece are distributed between the thread clamping seat and the positioning member; the electronic wire clamping device further comprises a driving motor, a transmission unit and a push rod parallel to the wire clamping shaft, the driving motor drives the push rod to move axially through the transmission unit, and a pushing portion connected with the push rod is arranged on the first wire clamping piece.

Furthermore, the wire clamping assembly further comprises a return spring, the pushing portion on the first wire clamping piece is in contact fit with the push rod, one end of the return spring is fixed, and the other end of the return spring is in contact fit with the end face of the pushing portion, which faces away from the push rod.

Further, the wire clamping shaft comprises a first shaft section and a second shaft section which are fixedly connected; the first shaft section comprises a first shaft body part, two clamping parts, a through hole and a connecting groove, wherein the two clamping parts axially extend from the end part of the first shaft body part to the direction close to the second shaft section; the second shaft section comprises a second shaft body part and a connecting part axially extending from the end part of the second shaft body part to the direction close to the first shaft section; the connecting part is inserted into the connecting groove in a tight fit manner; the push rod is movably arranged in the through hole in a penetrating way; the pushing part is arranged in the middle of the first wire clamping piece, the first wire clamping piece is provided with first through grooves which are axially communicated at two sides of the pushing part, the second wire clamping piece is provided with second through grooves of the second wire clamping piece, and the clamping part is arranged in the first through grooves of the first wire clamping piece and the second through grooves of the second wire clamping piece in a penetrating manner; the reset spring is positioned in the connecting groove of the first shaft section, and one end of the reset spring is abutted to the connecting part of the second shaft section.

Further, an axially extending guide groove is formed in the connecting portion of the second shaft section, and one end of the return spring is accommodated in the guide groove of the second shaft section.

Further, the wire clamping seat is fixed on the periphery of the first shaft body part, and the positioning piece is fixed on the periphery of the clamping part.

Further, the transmission unit comprises a transmission nut and a transmission lead screw which are in threaded fit, a motor shaft of the driving motor is fixedly connected with the transmission nut through a coupler, and the transmission lead screw is in contact fit with the push rod.

Further, the transmission unit comprises a transmission nut and a transmission screw rod which are in threaded fit, a motor shaft of the driving motor is fixedly connected with the transmission screw rod through a coupler, and the transmission nut is in contact fit with the push rod.

Furthermore, the electronic wire clamping device further comprises a dust cover, the dust cover comprises an installation plate portion, a cover body portion axially extending from the installation plate portion and a fixing portion extending outwards from the outer peripheral face of the cover body portion, the driving motor is fixed on the end face of the installation plate portion, back to the cover body portion, and the coupler and the transmission nut are accommodated in the cover body portion.

Further, the transmission unit comprises a transmission cam fixed on a motor shaft of the driving motor, a movable rod capable of moving axially and a transmission roller fixed at one end of the movable rod, the transmission cam is in contact fit with the transmission roller, and the other end of the movable rod is in contact fit with the push rod.

Furthermore, the end face of the positioning piece close to the second wire clamping piece is provided with a positioning ring part axially extending towards the direction close to the second wire clamping piece, and the positioning ring part can be in butt fit with the second wire clamping piece.

As described above, the utility model relates to an electron tension disk device has following beneficial effect:

this application adopts driving motor as the driving source, and driving motor's output is controllable for driving motor passes through the controllable amount of movement of drive unit drive push rod axial displacement, can control the distance that the push rod drove first thread clamping piece and remove from this accurately, thereby can adjust the line tension that thread clamping component applyed the suture accurately, finally improve the sewing quality.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of an electronic wire gripper device for automatically adjusting wire tension in the present application.

Fig. 2 is a side view of fig. 1.

Fig. 3 is a sectional view taken along line a-a of fig. 2.

Fig. 4 is a schematic structural view of the wire clamping assembly and the push rod in fig. 3.

Fig. 5 is an exploded view of fig. 4.

Fig. 6 is a schematic view of the connection between the push rod, the wire clamping shaft, the first wire clamping piece and the return spring in the present application.

Fig. 7 is a schematic structural diagram of a first wire clamping piece in the present application.

Fig. 8 is a schematic structural view of a second wire clamping piece in the present application.

Fig. 9 is a schematic structural view of a third embodiment of an electronic wire gripper device for automatically adjusting wire tension according to the present application, which is a sectional view.

Fig. 10 is a control flowchart of the electronic yarn trapper device for adjusting the yarn tension in the present application.

Description of the element reference numerals

10 wire clamping assembly

20 thread clamp seat

30 wire clamping device shaft

31 first shaft section

311 first shaft body part

312 clamping part

313 through hole

314 connecting groove

32 second shaft section

321 second shaft body part

322 connecting part

323 guide groove

40 positioning piece

41 positioning ring part

50 first wire clamping sheet

51 pushing part

52 first through groove

60 second wire clamping sheet

61 second through groove

70 driving motor

80 push rod

90 return spring

110 drive nut

120 drive lead screw

130 shaft coupling

140 dust cover

141 mounting plate part

142 cover body part

143 fixed part

150 drive cam

160 travel bar

170 drive roller

180 bearing

190 take-up spring

191 wire passing part

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

It should be understood that the drawings of the present application are only used to match the contents disclosed in the specification, so as to be known and read by those skilled in the art, and not to limit the practical limitations of the present invention, so that the present application does not have any technical significance, and any modification of the structure, change of the ratio relationship, or adjustment of the size should still fall within the scope of the present application without affecting the function and the achievable purpose of the present application. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", and the like used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be considered as the scope of the present invention without substantial changes in the technical content.

As shown in fig. 1 to 4, the present invention provides an electronic wire clamping device capable of automatically adjusting wire tension, which comprises a wire clamping assembly 10, a driving motor 70, a transmission unit, and a push rod 80; for convenience of description, in the following embodiments, the axial direction of the push rod 80 is defined as a left-right direction, and the direction of the push rod 80 toward the drive motor 70 is a left direction. Further, the wire clamping assembly 10 includes a wire clamping shaft 30, a wire clamping seat 20 fixed on a left section of the wire clamping shaft 30, a positioning member 40 fixed on a right section of the wire clamping shaft 30, a first wire clamping piece 50, and a second wire clamping piece 60; wherein, the thread clamp seat 20 is used for being fixedly arranged on the sewing machine shell, thereby fixedly arranging the thread clamp assembly 10 on the sewing machine shell; the gripper shaft 30 and the push rod 80 are parallel and axially extend along the left and right directions; the first wire clamping piece 50 and the second wire clamping piece 60 are distributed between the wire clamping seat 20 and the positioning piece 40 side by side from left to right, and the first wire clamping piece 50 and the second wire clamping piece 60 are movably sleeved on the wire clamping shaft 30; the driving motor 70 drives the push rod 80 to move axially through the transmission unit, and the first wire clamping piece 50 is provided with a pushing part 51 connected with the right end of the push rod 80.

When the electronic wire clamping device needs to clamp a wire, the driving motor 70 rotates to an angle matched with a required wire tension value, the driving motor 70 drives the push rod 80 to move rightwards through the transmission unit, the push rod 80 drives the pushing part 51 of the first wire clamping piece 50 to move rightwards together, so that the first wire clamping piece 50 is driven to move rightwards in a direction close to the second wire clamping piece 60, a suture penetrating between the first wire clamping piece 50 and the second wire clamping piece 60 is clamped, and the suture has the required wire tension. Therefore, the driving motor 70 is used as a driving source, the output angle of the driving motor 70 can be accurately controlled, so that the movement amount of the driving motor 70 for driving the push rod 80 to move axially rightward through the transmission unit can be accurately controlled, the distance for driving the first thread clamping piece 50 to move rightward through the push rod 80 can be accurately controlled, the thread tension applied to the sewing thread by the thread clamping assembly 10 can be accurately controlled, the thread tension of the sewing thread can be adjusted, the adjustment precision is high, and the stitch quality and the sewing quality are finally improved. In addition, the driving motor 70 is preferably a stepping motor, which has higher control precision and is more favorable for improving the adjustment control precision of the wire tension.

Further, as shown in fig. 4 to 6, the pushing portion 51 of the first wire clamping piece 50 is connected to the right end of the push rod 80 in a contact manner; based on this, the wire clamping assembly 10 further includes a return spring 90 extending in the left-right axial direction, the right end of the return spring 90 is fixed, and the left end of the return spring 90 is in contact fit with the right end face of the pushing portion 51. Therefore, when the electronic wire clamping device performs the wire clamping action, the push rod 80 moves to the right, and pushes the first wire clamping piece 50 to move to the right together by the same displacement through the pushing part 51, and the return spring 90 is compressed; when the electronic wire clamping device performs a wire releasing action, after the driving motor 70 is reset, the driving motor 70 drives each component in the transmission unit to reset respectively, the push rod 80 loses an acting force applied to the first wire clamping piece 50, the first wire clamping piece 50 moves leftwards and resets under the action of the reset spring 90, and the first wire clamping piece 50 pushes the push rod 80 to move leftwards through the pushing part 51, so that the push rod 80 resets.

Further, the preferable connection structure between the push rod 80, the wire clamping shaft 30, the first wire clamping piece 50, the second wire clamping piece 60 and the return spring 90 is as follows: as shown in fig. 4 to 6, the gripper shaft 30 comprises a first shaft section 31 and a second shaft section 32 fixedly connected; the first shaft section 31 includes a first shaft body portion 311, two clamping portions 312 extending axially rightward from a right end portion of the first shaft body portion 311 toward the second shaft section 32, a through hole 313 opened in the first shaft body portion 311, and a connecting groove 314 formed between the two clamping portions 312; the second shaft section 32 includes a second shaft body portion 321, and a connecting portion 322 extending axially leftward from a left end portion of the second shaft body portion 321 toward the first shaft section 31; the coupling portion 322 of the second shaft section 32 is inserted into the coupling groove 314 of the first shaft section 31 with a tight fit, thereby fixing the first shaft section 31 and the second shaft section 32. In particular, the push rod 80 is inserted in the through hole 313 so as to be movable left and right; as shown in fig. 7, the pushing portion 51 is disposed in the middle of the first thread clamping piece 50, and the first thread clamping piece 50 is provided with first through grooves 52 axially penetrating at both sides of the pushing portion 51; as shown in fig. 8, a second through slot 61 of the second thread clamping piece 60 is opened in the second thread clamping piece 60; the two clamping portions 312 of the first shaft segment 31 are respectively inserted into the two first through grooves 52 of the first thread clamping piece 50 and simultaneously inserted into the second through groove 61 of the second thread clamping piece 60; the return spring 90 is located in the connecting groove 314 of the first shaft section 31, and the right end of the return spring 90 abuts against the connecting portion 322 of the second shaft section 32, thereby fixing the right end of the return spring 90.

Preferably, as shown in fig. 4, the left end of the connecting portion 322 of the second shaft section 32 is provided with a guide groove 323 extending in the right axial direction, the right end of the return spring 90 is received in the guide groove 323 of the second shaft section 32, and the guide groove 323 plays a certain guiding role when the return spring 90 is compressed and rebounded, so that the first thread clamping piece 50 and the push rod 80 can be accurately returned.

Further, as shown in fig. 4 and 5, the wire holder seat 20 is fixedly locked to the outer periphery of the first shaft body portion 311 by a screw, thereby fixing the wire holder seat 20 to the outer periphery of the left-end portion of the first shaft section 31, the left-end portion of the first shaft section 31 constituting the left-end portion of the wire holder shaft 30. The positioning member 40 is fixedly fastened to the outer periphery of the holding portion 312 by a screw, thereby fixing the positioning member 40 to the outer periphery of the right section portion of the first shaft section 31, the right section portion of the first shaft section 31 and the second shaft section 32 together constituting the right section portion of the chuck shaft 30. In addition, a positioning ring portion 41 extending axially leftward in a direction approaching the second thread clamping piece 60 is provided on a left end surface of the positioning member 40 approaching the second thread clamping piece 60, and the positioning ring portion 41 can be in abutting engagement with a right end surface of the second thread clamping piece 60.

Further, as shown in fig. 1, 3 and 5, the thread clamping assembly 10 further includes a thread take-up spring 190, the thread take-up spring 190 is housed in the thread clamping seat 20 and is sleeved on the first shaft body 311 of the first shaft section 31, the thread take-up spring 190 has a thread passing part 191 extending from the thread clamping seat 20, and the thread passing part 191 is located outside the thread clamping seat 20.

Further, there are various embodiments of the transmission unit connected between the motor shaft of the driving motor 70 and the push rod 80, thereby enabling the electronic wire gripper apparatus to have various embodiments accordingly.

As shown in fig. 1 and 3, in the first embodiment of the electronic wire clamping device, the transmission unit includes a transmission nut 110 and a transmission screw 120 that are in threaded fit, the transmission nut 110 and the transmission screw 120 form a screw nut pair mechanism, a motor shaft of the driving motor 70 is fixedly connected to the transmission nut 110 through a coupling 130, a right end surface of the transmission screw 120 is in surface contact fit with a left end surface of the push rod 80, and the transmission screw 120 and the push rod 80 are also coaxially arranged. When the motor shaft of the driving motor 70 rotates, the driving nut 110 is driven to rotate together, so that the driving screw 120 is driven to rotate and move axially to the right, the driving screw 120 pushes the push rod 80 to the right, so that the first wire clamping piece 50 is driven to move rightwards, and the electronic wire clamping device performs a wire clamping action. The shaft coupling 130 and the screw nut pair mechanism are adopted for transmission, so that the coaxiality between the motor shaft of the driving motor 70 and the transmission nut 110 can be ensured, the transmission stability and the transmission precision of the transmission unit are improved, the wire tension control precision is improved, and the wire tension stability can be ensured.

Preferably, as shown in fig. 1 and 3, the first embodiment of the electronic thread clamping device further includes a dust cover 140, the dust cover 140 includes a mounting plate portion 141, a cover body portion 142 extending from an outer peripheral edge of the mounting plate portion 141 in a rightward axial direction, and a fixing portion 143 extending outward from an outer peripheral surface of a right end of the cover body portion 142, the driving motor 70 is fixed to a left end surface of the mounting plate portion 141 facing away from the cover body portion 142 by four screws, the cover body portion 142 is in a square barrel shape, the coupler 130 and the driving nut 110 are both accommodated in the square cavity of the cover body portion 142, and the fixing portion 143 of the dust cover 140 is fixed to the sewing machine housing by screws, thereby fixing the dust cover 140 to the sewing machine housing. Therefore, the dust cover 140 plays a role in fixing, supporting, installing and driving the motor 70 and preventing dust, so that the lubricating effect of the transmission nut 110 under common working conditions can be ensured, and the service life of the parts is prolonged.

The second electronic wire clamping device comprises a transmission unit and a driving screw rod, wherein the transmission unit comprises a transmission nut and a transmission screw rod which are in threaded fit, the transmission nut and the transmission screw rod form a screw nut pair mechanism, a motor shaft of a driving motor is fixedly connected with the transmission screw rod through a coupler, the right end face of the transmission nut is in surface contact fit with the left end face of a push rod, and the transmission nut and the push rod are arranged coaxially. When a motor shaft of the driving motor rotates, the driving screw rod is driven to rotate together, the driving nut is driven to rotate and move rightwards along the axial direction of the driving screw rod, the driving nut pushes the push rod rightwards, the first wire clamping piece is driven to move rightwards, and the electronic wire clamping device executes wire clamping action.

In the third embodiment of the electronic wire clamping device, as shown in fig. 9, the transmission unit includes a transmission cam 150 fixed at the right end of the motor shaft of the driving motor 70, a movable rod 160 capable of moving axially, a transmission roller 170 fixed at the left end of the movable rod 160, and a bearing 180 supporting the movable rod 160, the transmission cam 150 is in contact fit with the transmission roller 170, the right end face of the movable rod 160 is in surface contact fit with the left end face of the push rod 80, and the movable rod 160 and the push rod 80 are also coaxially arranged. When the motor shaft of the driving motor 70 rotates, the driving cam 150 is driven to rotate together, the driving roller 170 is driven to move right through the contact between the reducing profile surface of the driving cam 150 and the driving roller 170, so as to drive the moving rod 160 to move right together, and the moving rod 160 pushes the push rod 80 to the right, so as to drive the first wire clamping piece 50 to move right, and the electronic wire clamping device performs a wire clamping action.

In the above-mentioned electronic thread clamping device, the driving motor 70 is connected with the electric control module of the sewing machine in a communication manner. In particular, as shown in fig. 10, the operations of thread tension adjustment and thread clamping and releasing in the sewing machine using the above-mentioned electronic thread clamping device sequentially include the steps of:

s1, setting an initial value of the thread tension, wherein the initial value of the thread tension can be set through an operation panel on the sewing machine;

s2, judging whether the line tension needs to be changed; if the change is required, setting a new line tension value, and then executing the following step S3; if no change is required, the following step S3 is directly performed; the new thread tension value may be set by an operation panel on the sewing machine;

s3, judging whether the driving motor 70 returns to zero or not; if not, the electric control module controls the driving motor 70 to return to zero, and then the following step S4 is executed; if the zero is returned, directly executing the following step S4;

s4, the electronic control module controls the driving motor 70 to operate, the driving motor 70 operates to an angle matching with the required line tension value, in this process, the driving motor 70 drives the push rod 80 to move rightwards through the transmission unit, the push rod 80 pushes the pushing part 51 of the first thread clamping piece 50 rightwards, so as to push the first thread clamping piece 50 to move rightwards in a direction approaching to the second thread clamping piece 60, thereby clamping the suture thread penetrating between the first thread clamping piece 50 and the second thread clamping piece 60, so that the suture thread has the required line tension, that is, the electronic thread clamping device performs a thread clamping action;

s5, starting sewing by the sewing machine;

s6, finishing sewing by the sewing machine; then, the electric control module controls the driving motor 70 to return to zero and reset, the driving motor 70 drives each component in the transmission unit to reset, the first wire clamping piece 50 moves leftwards and resets under the action of the reset spring 90, the pushing part 51 of the first wire clamping piece 50 pushes the push rod 80 leftwards, and the trend push rod 80 resets; after the first wire clamping piece 50 is reset, the suture penetrating between the first wire clamping piece 50 and the second wire clamping piece 60 is loosened, namely the electronic wire clamping device performs a wire loosening action; next, the process returns to step S2 and the process loops.

To sum up, the utility model discloses various shortcomings in the prior art have effectively been overcome and high industry value has.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (10)

1. The utility model provides an automatic adjust tensile electron thread trapper device of line, includes thread clamping component (10), thread clamping component (10) are including thread clamping seat (20) that are fixed in the sewing machine casing, thread clamping shaft (30) in thread clamping seat (20), locating piece (40) of fixing on thread clamping shaft (30) and all movably overlap first thread clamping piece (50) and second thread clamping piece (60) of establishing on thread clamping shaft (30), first thread clamping piece (50) and second thread clamping piece (60) distribute between thread clamping seat (20) and locating piece (40), its characterized in that: still include driving motor (70), drive unit and be on a parallel with push rod (80) of thread tension ware axle (30), driving motor (70) pass through drive unit drive push rod (80) axial displacement, be equipped with on first thread tension piece (50) with push portion (51) that push rod (80) link to each other.

2. The electronic community grip apparatus of claim 1, wherein: the wire clamping assembly (10) further comprises a return spring (90), a pushing portion (51) on the first wire clamping piece (50) is in contact fit with the push rod (80), one end of the return spring (90) is fixed, and the other end of the return spring is in contact fit with the end face, back to the push rod (80), of the pushing portion (51).

3. The electronic community grip apparatus of claim 2, wherein: the wire clamping shaft (30) comprises a first shaft section (31) and a second shaft section (32) which are fixedly connected; the first shaft section (31) comprises a first shaft body part (311), two clamping parts (312) which axially extend from the end part of the first shaft body part (311) to the direction close to the second shaft section (32), a through hole (313) arranged in the first shaft body part (311), and a connecting groove (314) formed between the two clamping parts (312); the second shaft section (32) comprises a second shaft body part (321) and a connecting part (322) axially extending from the end part of the second shaft body part (321) to the direction close to the first shaft section (31); the connecting part (322) is inserted into the connecting groove (314) in a tight fit manner; the push rod (80) is movably arranged in the through hole (313) in a penetrating way; the pushing portion (51) is arranged in the middle of the first wire clamping piece (50), the first wire clamping piece (50) is provided with first through grooves (52) which are axially communicated on two sides of the pushing portion (51), the second wire clamping piece (60) is provided with second through grooves (61) of the second wire clamping piece (60), and the clamping portion (312) penetrates through the first through grooves (52) of the first wire clamping piece (50) and the second through grooves (61) of the second wire clamping piece (60); the return spring (90) is positioned in the connecting groove (314) of the first shaft section (31), and one end of the return spring is abutted against the connecting part (322) of the second shaft section (32).

4. The electronic community grip apparatus of claim 3, wherein: an axially extending guide groove (323) is opened in the connecting portion (322) of the second shaft section (32), and one end of the return spring (90) is received in the guide groove (323) of the second shaft section (32).

5. The electronic community grip apparatus of claim 3, wherein: the wire clamping seat (20) is fixed on the periphery of the first shaft body part (311), and the positioning piece (40) is fixed on the periphery of the clamping part (312).

6. The electronic community grip apparatus of claim 1, wherein: the transmission unit comprises a transmission nut (110) and a transmission lead screw (120) which are in threaded fit, a motor shaft of the driving motor (70) is fixedly connected with the transmission nut (110) through a coupler (130), and the transmission lead screw (120) is in contact fit with the push rod (80).

7. The electronic community grip apparatus of claim 1, wherein: the transmission unit comprises a transmission nut and a transmission lead screw which are in threaded fit, a motor shaft of the driving motor is fixedly connected with the transmission lead screw through a coupler, and the transmission nut is in contact fit with the push rod.

8. The electronic community grip apparatus of claim 6 or 7, wherein: the dustproof cover is characterized by further comprising a dustproof cover (140), wherein the dustproof cover (140) comprises an installation plate portion (141), a cover body portion (142) extending out of the installation plate portion (141) in the axial direction, and a fixing portion (143) extending out of the outer peripheral surface of the cover body portion (142), the driving motor (70) is fixed to the end face, back to the cover body portion (142), of the installation plate portion (141), and the coupler (130) and the transmission nut (110) are contained in the cover body portion (142).

9. The electronic community grip apparatus of claim 1, wherein: the transmission unit comprises a transmission cam (150) fixed on a motor shaft of the driving motor (70), a movable rod (160) capable of moving axially and a transmission roller (170) fixed at one end of the movable rod (160), the transmission cam (150) is in contact fit with the transmission roller (170), and the other end of the movable rod (160) is in contact fit with the push rod (80).

10. The electronic community grip apparatus of claim 1, wherein: the terminal surface that setting element (40) are close to second thread tension piece (60) is equipped with to being close to second thread tension piece (60) direction axial extension's location ring portion (41), location ring portion (41) can cooperate with second thread tension piece (60) butt.

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