Device for tightening connector and nut cover

Abstract

The invention discloses a device for tightening a connector and a nut cover, the device comprises a base, a connector clamping and positioning mechanism and a nut cover clamping and rotating mechanism are arranged on the base, and the connector clamping and positioning mechanism can clamp and fix connector shells of different sizes and drive the connector shells to move in the axial direction; the nut cover clamping and rotating mechanism can clamp and fix nut covers of different sizes and drive the nut covers to rotate in the circumferential direction, the nut cover clamping and rotating mechanism and the nut covers are coaxially arranged, and the nut cover clamping and rotating mechanism controls the action that the connector shell approaches the nut covers and the action that the nut covers are screwed synchronously. The problems that in the prior art, a connector and a nut cover are low in tightening efficiency, poor in precision, weak in adaptability and the like are solved, and the advantages of being efficient in operation, firm in connection and wide in application range are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of connector production, and in particular to a device for tightening a connector and a nut cover. Background Art

[0002] In the connector production process, tightening the connector housing and nut cover is a key process. The quality of the connection directly affects the performance and service life of the connector. Currently, the tightening operation of the connector and nut cover is mostly completed manually or semi-automatically, which has the following technical problems: During manual operation, the connector and nut cover need to be manually supported for alignment and screwing, which is not only labor-intensive but also difficult to ensure the coaxiality of the two. Tightening deviation is prone to occur, resulting in loose connection or damage to the workpiece. Semi-automatic equipment can usually only adapt to a single size of connector and nut cover. When producing products of different specifications, the clamping parts need to be replaced, and the adjustment process is cumbersome, affecting production efficiency. In existing equipment, the axial feeding action of the connector and the rotational tightening action of the nut cover are often performed in steps. The lack of synchronization between the two will cause thread slippage in the early stage of tightening, reducing the connection accuracy and stability.

[0003] Therefore, there is an urgent need for a device that can adapt to workpieces of different sizes, ensure coaxiality, and achieve synchronous tightening action to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned defects in the prior art and provide a device for tightening connectors and nut covers, which can achieve firm clamping, coaxial alignment and synchronous tightening of connectors and nut covers of different sizes, thereby improving production efficiency and connection quality.

[0005] To achieve the above-mentioned and other related purposes, the present invention provides a technical solution: a device for tightening a connector and a nut cover, comprising a base, wherein the base is provided with: A connector clamping and positioning mechanism configured to clamp and fix connector housings of different sizes and drive them to move axially; a nut cover clamping and rotating mechanism, wherein the nut cover clamping and rotating mechanism is configured to clamp and fix nut covers of different sizes and drive them to rotate in a circumferential direction; Furthermore, the connector housing clamped and fixed by the connector clamping and positioning mechanism and the nut cover clamped and fixed by the nut cover clamping and rotating mechanism are coaxially arranged; Furthermore, the action of the connector clamping and positioning mechanism controlling the connector housing to approach the nut cover and the action of the nut cover clamping and rotating mechanism screwing the nut cover are configured to be performed synchronously.

[0006] The preferred technical solution is: the connector clamping and positioning mechanism is composed of a sleeve, a slide bar 1, a slide bar 2, a pull rod, a slider 1, a slider 2, a clamping claw 1, a clamping claw 2, a cover plate, a core column, a clamping drive assembly and a jacking drive assembly, the sleeve is provided with a through hole along the axial direction, the core column is fixed in the through hole and is used for coaxial insertion in the connector housing, the upper and lower sides of the sleeve are axially provided with a slide groove 1 and a slide groove 2 which are relatively arranged, the slide bar 1 is slid in the slide groove 1, the slide bar 2 is slid in the slide groove 2, and the pull rod is used to connect the tail end of the slide bar 1 and the slide bar 2; the bottom sides of the front ends of the slide bar 1 and the slide bar 2 are both provided with an inclined surface 1, and the slide bar 1 is slid into the installation space formed between the slide bar 1 and the slide groove 1. In the meantime, the slider 2 is slidably arranged in the installation space formed between the slide rod 2 and the slide groove 2, and the top sides of the rear ends of the slider 1 and the slider 2 are both provided with a slope 2, and the slope 1 is matched with the slope 2; the clamping jaw 1 is fixed at the front end of the slider 1, and the clamping jaw 2 is fixed at the front end of the slider 2, and the clamping jaw 1 and the clamping jaw 2 are arranged opposite to each other up and down; the cover plate is fixed at the front end of the sleeve, and a space is preset between the cover plate and the sleeve for the clamping jaw 1 and the clamping jaw 2 to move forward and backward; the clamping drive assembly is used to drive the pull rod to move forward and backward to realize the action of clamping and fixing the connector shell, and the jacking drive assembly is used to drive the sleeve to move forward and backward to realize the control of the axial movement of the connector shell.

[0007] The preferred technical solution is: the jacking drive assembly is composed of a slide rail, a slide seat, a vertical plate and a telescopic cylinder. The slide rail is fixed on the base along the front-to-back direction, the slide seat is slid on the slide rail, the vertical plate is fixed on the slide seat, the rear end of the sleeve is fixed on the front side of the vertical plate, the telescopic cylinder is fixed on the base, and the telescopic end of the telescopic cylinder is arranged along the front-to-back direction and fixedly connected to the slide seat.

[0008] The preferred technical solution is: the clamping drive assembly is composed of a vertical plate 2 and a telescopic cylinder 2, the vertical plate 2 is fixed on the slide seat, the vertical plate 1 is provided with a mounting hole for the slide rod 1 and the slide rod 2 to pass through, the telescopic cylinder 2 is fixed on the rear side of the vertical plate 2, and the telescopic end of the telescopic cylinder 2 extends to the front side of the vertical plate 2 along the front-to-back direction and is fixedly connected to the pull rod.

[0009] The preferred technical solution is: the first clamping jaw is fixedly mounted on the first slider via a first connecting block, and the second clamping jaw is fixedly mounted on the second slider via a second connecting block.

[0010] The preferred technical solution is: the nut cover clamping and rotating mechanism is composed of a mounting seat, a rotating drum, a rotating ring, a fixed ring, multiple groups of sliding rods three, multiple groups of sliders three, multiple groups of clamping claws three, a guide cover, an axial drive assembly and a circumferential drive assembly, the mounting seat is fixed on the base, the rotating drum is rotatably mounted on the mounting seat and is driven to rotate by the circumferential drive assembly; a plurality of axially penetrating slideways are provided at a middle angle on the circumferential wall of the rotating drum, and multiple groups of the sliding rods three are slidably arranged in the multiple slideways in a one-to-one manner; the guide cover is coaxially fixed on the front end of the rotating drum, and multiple groups of the sliding rods three are slidably arranged in the installation space formed by the guide cover, the sliding rods three and the rotating drum in a one-to-one manner; the bottom side of the front end of the sliding rod three is provided with an inclined surface three, The top side of the slider three is provided with an inclined surface four, and the inclined surface three is matched with the inclined surface four. The inclined surface three is provided with a guide groove with a wedge-shaped cross-section, and the inclined surface four is provided with a guide block with a wedge-shaped cross-section, and the guide groove is matched with the guide block; multiple groups of the clamping jaws three are fixed one by one on the bottom sides of multiple groups of the sliders three to form a nut cover clamping structure, and the guide hole at the center of the guide cover is set corresponding to the nut cover clamping structure; the fixing ring is fixed at the rear end of the rotating drum, and the rotating ring is rotated in the fixing ring through a bearing and is coaxially arranged with the rotating drum, and the rotating ring is fixedly connected to multiple groups of the sliding rods three; the axial drive assembly is used to drive the fixing ring to move back and forth.

[0011] The preferred technical solution is: the rotating drum is rotatably connected to the mounting seat through a needle bearing and a deep groove ball bearing.

[0012] The preferred technical solution is: the circumferential drive assembly consists of a motor, a driving pulley, a driven pulley and a synchronous belt, the motor is fixed on the mounting seat and is used to drive the driving pulley to rotate, the driven pulley is fixed on the outer circumference of the rotating drum and is located between the needle roller bearing and the deep groove ball bearing, and the synchronous belt is wound around the driving pulley and the driven pulley.

[0013] The preferred technical solution is: it also includes a tensioning wheel, the synchronous belt is wound on the tensioning wheel, the tensioning wheel is adjustable on the mounting seat through a mounting block and is used to adjust the tension of the synchronous belt.

[0014] The preferred technical solution is: the axial drive assembly is composed of a telescopic cylinder three and a connecting piece, the telescopic cylinder three is fixed on the base through a bracket, and the telescopic end of the telescopic cylinder one is arranged along the front-to-back direction and fixedly connected to the fixing ring through the connecting piece.

[0015] Due to the application of the above technical solution, the present invention has the following beneficial effects: The present invention provides a connector clamping and positioning mechanism and a nut cover clamping and rotating mechanism to securely clamp connector housings and nut covers of varying sizes. The connector clamping and positioning mechanism utilizes the cooperation of inclined surfaces 1 and 2, and a clamping drive assembly drives the pull rod to move, driving the opening and closing of jaws 1 and 2 to accommodate connector housings of varying sizes. The nut cover clamping and rotating mechanism utilizes the cooperation of inclined surfaces 3 and 4, and the positioning of the guide groove and guide block to achieve radial expansion and contraction of jaw 3, adapting to nut covers of varying sizes, thus resolving the poor adaptability of existing devices.

[0016] The connector clamping and positioning mechanism and the nut cover clamping and rotating mechanism are coaxially arranged, ensuring the coaxiality of the connector housing and the nut cover during the tightening process, avoiding poor connection or workpiece damage caused by alignment deviation, and improving connection accuracy.

[0017] The pushing action of the connector clamping and positioning mechanism is synchronized with the screwing action of the nut cover clamping and rotating mechanism, which reduces the time interval of the step-by-step operation, avoids the thread slipping phenomenon in the early stage of screwing, and improves the tightening efficiency and connection stability.

[0018] Each drive component is driven by a cylinder and a motor, which has a high degree of automation and reduces the intensity of manual labor. At the same time, the consistency and reliability of the movement are guaranteed through the mechanical structure, which is conducive to quality control in mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the device involved in the present invention.

[0020] Figure 2 It is a schematic diagram of the internal structure of the device involved in the present invention.

[0021] Figure 3 It is a schematic cross-sectional view of the sleeve involved in the present invention.

[0022] Figure 4 It is a cross-sectional schematic diagram of the nut cover clamping and rotating mechanism involved in the present invention.

[0023] Figure 5 It is a cross-sectional schematic diagram of the cooperation between the sliding rod 3 and the sliding block 3 according to the present invention. DETAILED DESCRIPTION

[0024] The following describes the implementation of the present invention through specific embodiments. People skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0025] See also Figure 1-Figure 5. It should be noted that in the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the invented product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 the present invention. In addition, the terms "first", "second", "third" and the like are only used to distinguish descriptions and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances. Example

[0027] like Figures 1 to 5 As shown, according to an overall technical concept of the present invention, a device for tightening a connector and a nut cover is provided, comprising a base 100, on which is provided: The connector clamping and positioning mechanism 1 is configured to clamp and fix connector housings of different sizes and drive them to move axially; The nut cover clamping and rotating mechanism 2 is configured to clamp and fix nut covers of different sizes and drive them to rotate in the circumferential direction; Moreover, the connector housing clamped and fixed by the connector clamping and positioning mechanism 1 and the nut cover clamped and fixed by the nut cover clamping and rotating mechanism 2 are coaxially arranged; Furthermore, the action of the connector clamping and positioning mechanism 1 controlling the connector housing to approach the nut cover and the action of the nut cover clamping and rotating mechanism 2 screwing the nut cover are configured to be performed synchronously.

[0028] like Figures 1 to 5As shown, in an exemplary embodiment of the present invention, the connector clamping and positioning mechanism 1 is composed of a sleeve 101, a slide bar 102, a slide bar 2 103, a pull rod 104, a slider 105, a slider 2 106, a clamping claw 107, a clamping claw 2 108, a cover plate 109, a core column 110, a clamping drive assembly 111 and a jacking drive assembly 112. A through hole is opened in the axial direction of the sleeve 101, and the core column 110 is fixed in the through hole. And used for coaxial plugging in the connector housing, the upper and lower sides of the sleeve 101 are provided with a slide groove 1011 and a slide groove 2 1012 arranged oppositely in the axial direction, the slide rod 102 is slid in the slide groove 1011, the slide rod 2 103 is slid in the slide groove 2 1012, and the pull rod 104 is used to connect the tail ends of the slide rod 102 and the slide rod 2 103; the bottom sides of the front ends of the slide rods 102 and 103 are both provided with an inclined surface 1, and the slider 105 is provided with a plurality of grooves 1011 and 1012. It is slidably arranged in the installation space formed between slide bar 102 and slide groove 1011, and slide block 2 106 is slidably arranged in the installation space formed between slide bar 2 103 and slide groove 2 1012. The top sides of the rear ends of slide block 105 and slide block 2 106 are both provided with inclined surface 2, and inclined surface 1 and inclined surface 2 are arranged correspondingly; clamping jaw 107 is fixed at the front end of slider 105, and clamping jaw 2 108 is fixed at the front end of slider 2 106, and clamping jaw 107 and clamping jaw 2 108 are arranged opposite to each other up and down; cover plate 109 is fixed at the front end of sleeve 101, and space is preset between cover plate 109 and sleeve 101 for clamping jaw 107 and clamping jaw 2 108 to move back and forth; clamping drive assembly 111 is used to drive pull rod 104 to move back and forth to realize the action of clamping and fixing the connector shell, and jacking drive assembly 112 is used to drive sleeve 101 to move back and forth to realize the control of axial movement of connector shell.

[0029] like Figures 1 to 5 As shown, in an exemplary embodiment of the present invention, the jacking drive assembly 112 is composed of a slide rail 3, a slide seat 4, a vertical plate 5 and a telescopic cylinder 6. The slide rail 3 is fixed on the base 100 along the front-to-back direction, the slide seat 4 is slid on the slide rail 3, the vertical plate 5 is fixed on the slide seat 4, the rear end of the sleeve 101 is fixed on the front side of the vertical plate 5, the telescopic cylinder 6 is fixed on the base 100, and the telescopic end of the telescopic cylinder 6 is arranged along the front-to-back direction and fixedly connected to the slide seat 4.

[0030] like Figures 1 to 5 As shown, in an exemplary embodiment of the present invention, the clamping drive assembly 111 is composed of a vertical plate 2 7 and a telescopic cylinder 2 8, the vertical plate 2 7 is fixed on the slide 4, the vertical plate 1 5 is provided with mounting holes for the slide rod 102 and the slide rod 2 103 to pass through, the telescopic cylinder 2 8 is fixed on the rear side of the vertical plate 2 7, and the telescopic end of the telescopic cylinder 2 8 extends to the front side of the vertical plate 2 7 along the front-to-back direction and is fixedly connected to the pull rod 104.

[0031] like Figures 1 to 5As shown, in an exemplary embodiment of the present invention, the first clamping jaw 107 is fixedly installed with the first slider 105 through the first connecting block, and the second clamping jaw 108 is fixedly installed with the second slider 106 through the second connecting block.

[0032] like Figures 1 to 5 As shown, in an exemplary embodiment of the present invention, the nut cover clamping and rotating mechanism 2 is composed of a mounting seat 201, a rotating cylinder 202, a rotating ring 203, a fixing ring 204, multiple groups of sliding rods 3 205, multiple groups of sliders 3 206, multiple groups of clamping claws 3 207, a guide cover 208, an axial drive assembly 209 and a circumferential drive assembly 210. The mounting seat 201 is fixed on the base 100, and the rotating cylinder 202 is rotatably mounted on the mounting seat 201 and driven to rotate by the circumferential drive assembly 210; a plurality of axially penetrating slideways are provided at a medium angle on the circumferential wall of the rotating cylinder 202, and multiple groups of sliding rods 3 205 are slidably mounted in the multiple slideways in a one-to-one manner; the guide cover 208 is coaxially fixed to the front end of the rotating cylinder 202, and multiple groups of sliders 3 206 are slidably mounted in the installation space formed by the guide cover 208, the sliding rods 3 205 and the rotating cylinder 202 in a one-to-one manner; A slope three is provided on the bottom side of the front end of rod three 205, and a slope four is provided on the top side of slider three 206. Slope three and slope four are matched with each other. Slope three is provided with a guide groove 2051 with a wedge-shaped cross-section, and slope four is provided with a guide block 2061 with a wedge-shaped cross-section. The guide groove 2051 and the guide block 2061 are matched with each other; multiple groups of clamping jaws three 207 are fixed one by one on the bottom sides of multiple groups of sliders three 206 to form a nut cover clamping structure, and the guide hole 2081 at the center of the guide cover 208 is set corresponding to the nut cover clamping structure; the fixed ring 204 is fixed at the rear end of the rotating drum 202, and the rotating ring 203 is rotated in the fixed ring 204 through a bearing and is coaxially arranged with the rotating drum 202. The rotating ring 203 is fixedly connected to the multiple groups of sliding rods three 205; the axial drive assembly 209 is used to drive the fixed ring 204 to move back and forth.

[0033] like Figures 1 to 5 As shown, in an exemplary embodiment of the present invention, the rotating drum 202 is rotatably connected to the mounting seat 201 through a needle bearing 2021 and a deep groove ball bearing 2022.

[0034] like Figures 1 to 5 As shown, in an exemplary embodiment of the present invention, the circumferential drive assembly 210 is composed of a motor 2101, a driving pulley 2102, a driven pulley 2103 and a synchronous belt 2104. The motor 2101 is fixed on the mounting seat 201 and is used to drive the driving pulley 2102 to rotate. The driven pulley 2103 is fixed on the outer periphery of the rotating drum 202 and is located between the needle roller bearing 2021 and the deep groove ball bearing 2022. The synchronous belt 2104 is wound around the driving pulley 2102 and the driven pulley 2103.

[0035] like Figures 1 to 5As shown, in an exemplary embodiment of the present invention, it also includes a tensioning wheel 2105, on which the synchronous belt 2104 is wound. The tensioning wheel 2105 is adjustable on the mounting seat 201 through the mounting block and is used to adjust the tension of the synchronous belt 2104.

[0036] like Figures 1 to 5 As shown, in an exemplary embodiment of the present invention, the axial drive assembly 209 is composed of a telescopic cylinder three 2091 and a connecting piece 2092. The telescopic cylinder three 2091 is fixed on the base 100 through a bracket, and the telescopic end of the telescopic cylinder one 2091 is arranged along the front-to-back direction and is fixedly connected to the fixing ring 204 through the connecting piece 2092.

[0037] Therefore, the present invention has the following advantages: The present invention provides a connector clamping and positioning mechanism and a nut cover clamping and rotating mechanism to securely clamp connector housings and nut covers of varying sizes. The connector clamping and positioning mechanism utilizes the cooperation of inclined surfaces 1 and 2, and a clamping drive assembly drives the pull rod to move, driving the opening and closing of jaws 1 and 2 to accommodate connector housings of varying sizes. The nut cover clamping and rotating mechanism utilizes the cooperation of inclined surfaces 3 and 4, and the positioning of the guide groove and guide block to achieve radial expansion and contraction of jaw 3, adapting to nut covers of varying sizes, thus resolving the poor adaptability of existing devices.

[0038] The connector clamping and positioning mechanism and the nut cover clamping and rotating mechanism are coaxially arranged, ensuring the coaxiality of the connector housing and the nut cover during the tightening process, avoiding poor connection or workpiece damage caused by alignment deviation, and improving connection accuracy.

[0039] The pushing action of the connector clamping and positioning mechanism is synchronized with the screwing action of the nut cover clamping and rotating mechanism, which reduces the time interval of the step-by-step operation, avoids the thread slipping phenomenon in the early stage of screwing, and improves the tightening efficiency and connection stability.

[0040] Each drive component is driven by a cylinder and a motor, which has a high degree of automation and reduces the intensity of manual labor. At the same time, the consistency and reliability of the movement are guaranteed through the mechanical structure, which is conducive to quality control in mass production.

[0041] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical concepts disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A device for tightening a connector and a nut cover, comprising a base, characterized in that: The base is provided with: A connector clamping and positioning mechanism configured to clamp and fix connector housings of different sizes and drive them to move axially; a nut cover clamping and rotating mechanism, wherein the nut cover clamping and rotating mechanism is configured to clamp and fix nut covers of different sizes and drive them to rotate in a circumferential direction; Furthermore, the connector housing clamped and fixed by the connector clamping and positioning mechanism and the nut cover clamped and fixed by the nut cover clamping and rotating mechanism are coaxially arranged; Furthermore, the action of the connector clamping and positioning mechanism controlling the connector housing to approach the nut cover and the action of the nut cover clamping and rotating mechanism screwing the nut cover are configured to be performed synchronously.

2. The device for tightening a connector and a nut cover according to claim 1, characterized in that: The connector clamping and positioning mechanism is composed of a sleeve, a slide bar 1, a slide bar 2, a pull rod, a slider 1, a slider 2, a clamping claw 1, a clamping claw 2, a cover plate, a core column, a clamping drive assembly and a jacking drive assembly. The sleeve is axially provided with a through hole, and the core column is fixed in the through hole and is used to be coaxially plugged into the connector housing. The upper and lower sides of the sleeve are axially provided with a slide groove 1 and a slide groove 2 that are relatively arranged, the slide bar 1 is slid in the slide groove 1, the slide bar 2 is slid in the slide groove 2, and the pull rod is used to connect the slide bar 1 and the tail end of the slide bar 2; the bottom sides of the front ends of the slide bar 1 and the slide bar 2 are both provided with an inclined surface 1, and the slide bar 1 is slid in the installation space formed between the slide bar 1 and the slide groove 1, and the The slider 2 is slidably arranged in the installation space formed between the slide rod 2 and the slide groove 2, and the top sides of the rear ends of the slider 1 and the slider 2 are both provided with a slope 2, and the slope 1 is matched with the slope 2; the clamping jaw 1 is fixed at the front end of the slider 1, and the clamping jaw 2 is fixed at the front end of the slider 2, and the clamping jaw 1 and the clamping jaw 2 are arranged opposite to each other up and down; the cover plate is fixed at the front end of the sleeve, and a space is preset between the cover plate and the sleeve for the clamping jaw 1 and the clamping jaw 2 to move forward and backward; the clamping drive assembly is used to drive the pull rod to move forward and backward to realize the action of clamping and fixing the connector shell, and the jacking drive assembly is used to drive the sleeve to move forward and backward to realize the control of the axial movement of the connector shell.

3. The device for tightening a connector and a nut cover according to claim 2, characterized in that: The jacking drive assembly is composed of a slide rail, a slide seat, a vertical plate and a telescopic cylinder. The slide rail is fixed on the base along the front-to-back direction, the slide seat is slid on the slide rail, the vertical plate is fixed on the slide seat, the rear end of the sleeve is fixed on the front side of the vertical plate, the telescopic cylinder is fixed on the base, and the telescopic end of the telescopic cylinder is arranged along the front-to-back direction and fixedly connected to the slide seat.

4. The device for tightening a connector and a nut cover according to claim 3, characterized in that: The clamping drive assembly is composed of a vertical plate 2 and a telescopic cylinder 2. The vertical plate 2 is fixed on the slide seat. The vertical plate 1 is provided with a mounting hole for the slide rod 1 and the slide rod 2 to pass through. The telescopic cylinder 2 is fixed on the rear side of the vertical plate 2. The telescopic end of the telescopic cylinder 2 extends to the front side of the vertical plate 2 along the front-to-back direction and is fixedly connected to the pull rod.

5. The device for tightening a connector and a nut cover according to claim 2, characterized in that: The first clamping jaw is fixedly mounted on the first slider via a first connecting block, and the second clamping jaw is fixedly mounted on the second slider via a second connecting block.

6. The device for tightening a connector and a nut cover according to claim 1, characterized in that: The nut cover clamping and rotating mechanism is composed of a mounting seat, a rotating drum, a rotating ring, a fixed ring, multiple groups of sliding rods three, multiple groups of sliders three, multiple groups of clamping claws three, a guide cover, an axial drive assembly and a circumferential drive assembly. The mounting seat is fixed on the base, and the rotating drum is rotatably mounted on the mounting seat and driven to rotate by the circumferential drive assembly; a plurality of axially penetrating slideways are provided at a medium angle on the circumferential wall of the rotating drum, and multiple groups of the sliding rods three are slid in the multiple slideways in a one-to-one manner; the guide cover is coaxially fixed on the front end of the rotating drum, and multiple groups of the sliders three are slid in a one-to-one manner in the installation space formed by the guide cover, the sliding rods three and the rotating drum; an inclined surface three is provided on the bottom side of the front end of the sliding rod three, and the sliders three are The top side is provided with an inclined surface four, and the inclined surface three is matched with the inclined surface four. The inclined surface three is provided with a guide groove with a wedge-shaped cross-section, and the inclined surface four is provided with a guide block with a wedge-shaped cross-section, and the guide groove is matched with the guide block; multiple groups of the clamping jaws three are fixed one by one on the bottom sides of multiple groups of the sliders three to form a nut cover clamping structure, and the guide hole at the center of the guide cover is set corresponding to the nut cover clamping structure; the fixing ring is fixed at the rear end of the rotating drum, and the rotating ring is rotated in the fixing ring through a bearing and is coaxially arranged with the rotating drum, and the rotating ring is fixedly connected to multiple groups of the sliding rods three; the axial drive assembly is used to drive the fixing ring to move back and forth.

7. The device for tightening a connector and a nut cover according to claim 6, characterized in that: The rotating drum is rotatably connected to the mounting seat via a needle bearing and a deep groove ball bearing.

8. The device for tightening a connector and a nut cover according to claim 7, characterized in that: The circumferential drive assembly consists of a motor, a driving pulley, a driven pulley and a synchronous belt. The motor is fixed on the mounting seat and is used to drive the driving pulley to rotate. The driven pulley is fixed on the outer circumference of the rotating drum and is located between the needle roller bearing and the deep groove ball bearing. The synchronous belt is wound around the driving pulley and the driven pulley.

9. The device for tightening a connector and a nut cover according to claim 8, characterized in that: It also includes a tensioning wheel, the synchronous belt is wound around the tensioning wheel, the tensioning wheel is adjustable on the mounting seat through a mounting block and is used to adjust the tension of the synchronous belt.

10. The device for tightening a connector and a nut cover according to claim 6, characterized in that: The axial drive assembly is composed of a telescopic cylinder three and a connecting piece. The telescopic cylinder three is fixed on the base through a bracket. The telescopic end of the telescopic cylinder one is arranged along the front-to-back direction and is fixedly connected to the fixing ring through the connecting piece.

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