Automatic common rail clamp with adjustable clamping length

Abstract

The utility model discloses an automatic common rail clamp with the adjustable clamping length. The automatic common rail clamp comprises a clamp right plate, a clamp left plate, a clamp remodeling plate, a clamp remodeling driving lead screw, a clamp remodeling guide rod, a left clamp and a right clamp. The two ends of the clamp remodeling driving lead screw are rotationally connected to the clamp right plate and the clamp left plate, and a clamp lead screw rotating wheel is arranged at the left end of the clamp remodeling driving lead screw. The left clamp and the right clamp are arranged on the clamp remodeling plate and the clamp right plate respectively, and the clamp remodeling plate is in threaded connection with the clamp remodeling driving lead screw through a trapezoidal nut. The clamp remodeling driving lead screw is driven to rotate through the clamp lead screw rotating wheel, so that the clamp remodeling plate can be driven, the left clamp is driven to move left and right along the clamp remodeling driving lead screw and the clamp remodeling guide rod, the distance between the left clamp and the right clamp is adjustable, workpieces of different lengths and models can be clamped, and the application range is wide. The device can be applied to an intelligent manufacturing production line, batch clamping, conveying, machining and other operations of workpieces are achieved, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of fixture, concretely is a kind of automatic common rail fixture of clamping length adjustable. BACKGROUND

[0002] Fixture is a kind of tool widely used in industrial production, for fixing and supporting workpiece, so that it keeps stable position and posture in machining process.

[0003] Common rail fixture is a kind of fixture, and the clamping tool of two ends is located on the same track, is widely used in automobile repair and industrial manufacturing, can realize the accurate fixing and positioning of workpiece, to improve machining precision and coaxiality.

[0004] Common rail fixture can also play an important role in intelligent manufacturing production line, by changing different tooling fixture, combined with manufacturing execution system, can realize the batch conveying of workpiece, to realize high-efficiency, high-quality batch production, to improve production efficiency.

[0005] Chinese utility model patent CN210633331U discloses a kind of high-pressure common rail processing fixture, including base, positioning and clamping module one, positioning and clamping module two, positioning and clamping module three, positioning support block one and positioning support block two, the positioning support block one and the positioning support block two are located fixedly connected in base both ends, and with the base connection, the positioning and clamping module, positioning and clamping module two and positioning and clamping module three are located between positioning support block one and positioning support block two, and are fixedly connected with base;The fixture can realize the fixing and clamping of high-pressure common rail shaft of slender rod in multiple directions.But the position of positioning and clamping module in the fixture is fixed, so it cannot be well applied to different models and length workpiece clamping, and its structure is not conducive to realizing the batch conveying of workpiece in intelligent manufacturing production line. UTILITY MODEL CONTENT

[0006] To solve the above problems, the utility model provides a kind of automatic common rail fixture of clamping length adjustable, and the spacing of left fixture and right fixture is adjustable, can clamping workpiece of different length and model.

[0007] To achieve the above purpose, the technical scheme adopted by the utility model is:

[0008] The utility model provides a kind of automatic co-rail clamp of clamping length adjustable, including clamp right plate, clamp left plate, clamp change plate, clamp change drive screw, clamp change guide rod, left clamp and right clamp;The both ends of the clamp change guide rod are fixedly connected on clamp right plate and clamp left plate, the both ends of the clamp change drive screw are rotatably connected on clamp right plate and clamp left plate, and the left end of the clamp change drive screw is stretched out outside clamp left plate and is equipped with clamp screw rod rotating wheel;The left clamp is arranged on clamp change plate, the right clamp is arranged on clamp right plate, the clamp change plate is sleeved on clamp change drive screw and clamp change guide rod, and trapezoidal nut is equipped on the clamp change plate and is screw-connected with clamp change drive screw.

[0009] Further, the left clamp or right clamp includes clamp opening and closing plate connecting rod, clamp opening and closing plate rotating shaft, clamp spring pull rod, clamp left opening and closing rod clamp right opening and closing rod or, lower clamp limit block, upper clamp limit block, clamp left opening and closing rod fixed plate or clamp right opening and closing rod fixed plate, clamp opening and closing fixed block, clamp spring seat, stretch spring and two pieces of clamp swing side plate;The clamp swing side plate is in ladder shape, including rotating connecting portion at lower end, engaging limit portion at middle and clamping portion at upper end;The top of the clamp right plate and clamp change plate is provided with recess matched with the engaging limit portion;The clamp opening and closing fixed block is installed on the right side upper portion of clamp right plate and the left side upper portion of clamp change plate, the clamp opening and closing plate rotating shaft is sleeved in the clamp opening and closing fixed block, and the both ends of the clamp opening and closing plate rotating shaft are installed on the rotating connecting portion of the clamp swing side plate, the engaging limit portions of the two pieces of clamp swing side plate are fixedly connected through the clamp opening and closing plate connecting rod, the both ends of the clamp left opening and closing rod fixed plate and the clamp right opening and closing rod fixed plate are respectively fixed on the clamping portion of the clamp swing side plate of left clamp and right clamp, the clamp left opening and closing rod fixed plate is provided with clamp left opening and closing rod, and the clamp right opening and closing rod fixed plate is provided with clamp right opening and closing rod;The upper clamp limit block is installed on the right side of left opening and closing rod fixed plate and the left side of clamp right opening and closing rod fixed plate, and the lower clamp limit block is installed on the left side upper portion of clamp right plate and the right side upper portion of clamp change plate;The left side of clamp right plate and the right side of clamp change plate are provided with clamp spring seat, the outside of the clamping portion of the clamp swing side plate of left clamp and right clamp is provided with clamp spring pull rod, and the both ends of the stretch spring are respectively fixed on the clamp spring pull rod and clamp spring seat.

[0010] Further, the clamp change sensing rod provided on the top of the clamp change plate is used to measure the length of the workpiece to be clamped and feedback signal to control the rotation of the clamp screw rod rotating wheel, to adjust the distance between left clamp and right clamp and automatically match the length of the workpiece to be clamped.

[0011] Further, the bottom of the clamp right plate and clamp left plate is provided with clamp chain installation part.

[0012] Further, the right end of the clamp changing type driving screw rod extends outside the clamp right plate and is sequentially sleeved with a clamp clutch spring, a clamp clutch plate, a clamp friction plate, a clamp stop ring and a hexagonal nut, the two ends of the clamp clutch spring are respectively abutted against the clamp right plate and the clamp clutch plate, a clamp screw rod clutch guide sleeve is arranged on the clamp right plate, the clamp clutch plate is fixedly connected with the right end of a clamp screw rod clutch guide rod, and the left end of the clamp screw rod clutch guide rod is sleeved in the clamp screw rod clutch guide sleeve.

[0013] Further, the clamp right plate and the clamp left plate are provided with clamp screw rod rotating sliding sleeves, and the two ends of the clamp changing type driving screw rod are sleeved with bearings, and the bearings at the two ends of the clamp changing type driving screw rod are respectively sleeved in the screw rod rotating sliding sleeves of the clamp right plate and the clamp left plate.

[0014] Further, the clamp changing type guide rod is sleeved with a linear bearing, and the clamp changing type plate is provided with a clamp changing type guide seat, and the linear bearing is installed in the clamp changing type guide seat.

[0015] Further, the clamp right plate and the clamp left plate are fixedly connected through clamp connecting flat steels at the two sides of the bottom portions of the clamp right plate and the clamp left plate.

[0016] Further, the bottom portions of the clamp right plate and the clamp left plate are provided with clamp positioning sleeves.

[0017] Further, the outer side of the clamp left plate is provided with a clamp mark.

[0018] Compared with the prior art, the clamp has the following beneficial effects:

[0019] The automatic common-rail clamp with adjustable clamping length provided by the utility model can drive the clamp changing type plate and the left clamp to move left and right along the clamp changing type driving screw rod and the clamp changing type guide rod, so that the distance between the left clamp and the right clamp is adjustable, different lengths and types of workpieces can be clamped, and the clamp is suitable for a wide range of applications. In addition, under the action of the clamp changing type driving screw rod and the clamp changing type guide rod, the left clamp and the right clamp always maintain a common height, accurate fixing and positioning of the workpiece can be realized, and thus the machining precision and coaxiality are improved.

[0020] Further, the clamp changing type sensing rod is arranged, the length of the workpiece to be clamped can be measured, the clamp screw rod rotating wheel is adaptively controlled to rotate, the distance between the left clamp and the right clamp is adjusted, and the length of the workpiece to be clamped is automatically matched, so that the degree of automation is high.

[0021] Further, the common rail clamp of the utility model can be installed on the clamp chain through the clamp chain mounting part, and the common rail clamp of the utility model can be applied to the intelligent manufacturing production line through the installation of multiple groups of the common rail clamp of the utility model on the clamp chain, so that the batch clamping, conveying and processing of workpieces can be realized, intelligent and automatic production can be realized, and production efficiency can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, and are used together with the embodiments of the utility model to explain the utility model, and do not constitute the limitation to the utility model.

[0023] In the drawings:

[0024] Figure 1 is the exploded view of the utility model;

[0025] Figure 2 is the front view of the utility model;

[0026] Figure 3 is the top view of the utility model;

[0027] Figure 4 is the E-E sectional view of Figure 2 ;

[0028] Figure 5 is the side view of the utility model;

[0029] Figure 6 is the F-F sectional view of Figure 2 ;

[0030] Figure 7 is the G-G sectional view of Figure 2 ;

[0031] Figure 8 is the structure schematic view of the clamp swing side plate of the utility model;

[0032] Wherein: 1, clamp right plate; 2, clamp change type drive screw; 3, clamp screw rotating wheel; 4, clamp screw rotating sliding sleeve; 5, clamp screw clutch guide sleeve; 6, clamp change type guide seat; 7, clamp opening and closing plate connecting rod; 8, clamp opening and closing plate rotating shaft; 9, clamp change type sensing rod; 10, clamp spring pull rod; 11, clamp left opening and closing rod; 12, clamp right opening and closing rod; 13, lower clamp limit block; 14, upper clamp limit block; 15, clamp positioning sleeve; 16, clamp screw clutch guide rod; 17, clamp change type guide rod; 18, clamp left opening and closing rod fixed plate; 19, clamp right opening and closing rod fixed plate; 20, clamp opening and closing fixed block; 21, clamp change type plate; 22, clamp left plate; 23, clamp stop ring; 24, clamp swing side plate; 241, rotating connecting part; 242, clamping part; 243, clamping part; 25, clamp coupling flat steel; 26, clamp clutch plate; 27, clamp friction plate; 28, clamp clutch spring; 29, clamp spring seat; 30, clamp chain installation part; 31, groove; 32, clamp identification; 33, trapezoidal nut; 34, linear bearing; 35, bearing; 36, tension spring; 37, E-shaped elastic retainer; 38, hexagonal nut; 39, clamp fixing pin; 40, shaft elastic retainer; 41, flat key; 42, lower clamp base plate. DETAILED DESCRIPTION

[0033] The utility model will be further explained in detail below with reference to the drawings.

[0034] See Figures 1-7The utility model provides a length of automatical common rail clamp of clamping can be adjusted, including clamp right plate 1, clamp left plate 22, clamp change type board 21, clamp change type drive screw 2, clamp change type guide rod 17, left clamp and right clamp, clamp right plate 1 and clamp left plate 22 bottom both sides are fixedly connected through clamp link flat steel 25, clamp change type guide rod 17 both ends are fixed on clamp right plate 1 and clamp left plate 22 respectively, clamp right plate 1 and clamp left plate 22 are equipped with clamp screw rod rotation sliding sleeve 4, the both ends of clamp change type drive screw 2 are equipped with bearing 35, and the bearing 35 of clamp change type drive screw 2 both ends is respectively equipped in the screw rod rotation sliding sleeve 4 of clamp right plate 1 and clamp left plate 22, the left end of clamp change type drive screw 2 is stretched out outside clamp left plate 22 and is equipped with clamp screw rod rotating wheel 3, and clamp change type drive screw 2 is connected through the parallel key 41 between clamp screw rod rotating wheel 3, the right end of clamp change type drive screw 2 is stretched out outside clamp right plate 1 and is sequentially equipped with clamp clutch spring 28, clamp clutch plate 26, clamp friction plate 27, clamp baffle ring 23, washer and hexagon nut 38, clamp clutch spring 28 is equipped on clamp change type drive screw 2, and its both ends are respectively rested on clamp right plate 1 and clamp clutch plate 26, clamp right plate 1 is equipped with clamp screw rod clutch guide sleeve 5, and the left end of clamp screw rod clutch guide rod 16 is equipped in clamp screw rod clutch guide sleeve 5, and the right end of clamp screw rod clutch guide rod 16 is fixed on clamp clutch plate 26, through hexagon nut 38, clamp clutch plate 26 and clamp friction plate 27 are installed at the right end of clamp change type drive screw 2, and the tightness degree of adjustment clutch can be pressed clamp clutch spring 28 by adjusting hexagon nut 38, thereby.

[0035] The left clamp is arranged on the upper clamp change type board 21, and the right clamp is arranged on the clamp right plate 1. The clamp change type board 21 is sleeved on the clamp change type drive screw 2 and the clamp change type guide rod 17 and located between the clamp right plate 1 and the clamp left plate 22. The clamp change type drive screw 2 is provided with a trapezoidal nut 33, and the trapezoidal nut 33 is in threaded connection with the clamp change type drive screw 2. The trapezoidal nut 33 is fixedly connected with the clamp change type board 21 through a screw. The clamp change type guide rod 17 is sleeved with a linear bearing 34. The clamp change type board 21 is provided with a clamp change type guide seat 6. The linear bearing 34 is installed in the clamp change type guide seat 6. By rotating the clamp screw rod rotating wheel 3, the clamp change type drive screw 2 can be driven to rotate forward or reversely, so that the trapezoidal nut 33 moves left and right along the clamp change type drive screw 2, thereby driving the clamp change type board 21 to move left and right along the clamp change type drive screw 2 and the clamp change type guide rod 17, so as to adjust the distance between the left clamp and the right clamp, and facilitate clamping workpieces of different sizes.

[0036] The left clamp comprises a clamp opening and closing plate connecting rod 7, a clamp opening and closing plate rotating shaft 8, a clamp spring pull rod 10, a clamp left opening and closing rod 11, a lower clamp limiting block 13, an upper clamp limiting block 14, a clamp left opening and closing rod fixing plate 18, a clamp opening and closing fixing block 20, a clamp spring seat 29, a tensile spring 36 and two clamp swing side plates 24. The right clamp comprises a clamp opening and closing plate connecting rod 7, a clamp opening and closing plate rotating shaft 8, a clamp spring pull rod 10, a clamp right opening and closing rod 12, a lower clamp limiting block 13, an upper clamp limiting block 14, a clamp right opening and closing rod fixing plate 19, a clamp opening and closing fixing block 20, a clamp spring seat 29, a tensile spring 36 and two clamp swing side plates 24. The clamp swing side plate 24 is in a stepped shape, comprising a rotating connection part 241 at the lower end, a clamping limiting part 242 in the middle and a clamping part 243 at the upper end, the rotating connection part 241 is connected at the bottom of the clamping limiting part 242 and flush with the rear end of the clamping limiting part 242, and the clamping part 243 is connected at the upper part of the clamping limiting part 242 and flush with the front end of the clamping limiting part 242. The clamp right plate 1 and the clamp type changing plate 21 are provided with grooves matching the clamping limiting part 242 at the top. The clamp opening and closing fixing block 20 is installed at the right upper part of the clamp right plate 1 and the left upper part of the clamp type changing plate 21, the clamp opening and closing plate rotating shaft 8 is sleeved in the clamp opening and closing fixing block 20, and the two ends of the clamp opening and closing plate rotating shaft 8 are installed on the rotating connection part 241 of the clamp swing side plate 24, the clamping limiting parts 242 of the two clamp swing side plates 24 are fixedly connected through the clamp opening and closing plate connecting rod 7, the two ends of the clamp left opening and closing rod fixing plate 18 and the clamp right opening and closing rod fixing plate 19 are fixedly installed on the clamping parts 243 of the two clamp swing side plates 24 of the left clamp and the right clamp respectively, the clamp left opening and closing rod 11 is arranged on the clamp left opening and closing rod fixing plate 18, and the clamp right opening and closing rod 12 is arranged on the clamp right opening and closing rod fixing plate 19; the upper clamp limiting block 14 is installed at the right side of the left opening and closing rod fixing plate 18 and the left side of the clamp right opening and closing rod fixing plate 19, the lower clamp limiting block 13 is installed at the left upper part of the clamp right plate 1 and the right upper part of the clamp type changing plate 21, and a lower clamp pad 42 is arranged between the lower clamp limiting block 13 and the clamp right plate 1 and the clamp type changing plate 21; the clamp spring seat 29 is arranged at the left side of the clamp right plate 1 and the right side of the clamp type changing plate 21, the clamp spring pull rod 10 is arranged outside the clamping part 243 of the clamp swing side plate 24 of the left clamp and the right clamp, and the two ends of the tensile spring 36 are fixedly installed on the clamp spring pull rod 10 and the clamp spring seat 29 respectively.

[0037] The clamps are in the closed state by the tension of the tension spring 36, at this time, the clamping limit parts 243 of the clamping swing side plates 24 of the left and right clamps are clamped in the grooves on the top of the clamping type changing plate 21 and the clamping right plate 1 respectively, and the lower clamp limiting blocks 13 in the left and right clamps are located directly below the upper clamp limiting blocks 14. When the workpiece needs to be clamped, the left and right clamping opening and closing rods 11 and 12 are pulled to the left and right respectively, so that the left and right clamps are opened to the left and right respectively around the clamping opening and closing plate rotating shaft 8, at this time, the tension spring 36 is stretched, and the upper clamp limiting blocks 14 are opened to the left and right with the left and right clamps, and the lower clamp limiting blocks 13 remain stationary, then the workpiece to be clamped is placed on the lower clamp limiting blocks 13 on both sides, and then the left and right clamping opening and closing rods 11 and 12 are released, the tension spring 36 automatically restores to the contracted state, and drives the clamps to close, so that the two ends of the workpiece are clamped in the gap between the upper and lower clamp limiting blocks 14 and 13. The V-shaped grooves on the lower and upper clamp limiting blocks 13 and 14 can increase the stability of the clamped workpiece.

[0038] The top of the clamping type changing plate 21 is provided with a clamping type changing sensing rod 9, which can measure the length of the workpiece to be clamped, so as to control the rotation of the clamping screw rotating wheel 3 and drive the clamping type changing plate 21 to move to the appropriate position, so that the distance between the left and right clamps matches the length of the workpiece to be clamped. Therefore, the common rail clamp of the utility model can adapt to workpieces of different models and lengths, can clamp workpieces of various models and lengths, and has a wide range of applications.

[0039] The outer side of the clamping left plate 22 is provided with a clamping identifier 32, which is convenient for identifying the clamps and the clamped workpiece.

[0040] The bottom of the clamping right plate 1 and the clamping left plate 22 is provided with a clamping positioning sleeve 15 and a clamping chain installation part 30, the clamping chain installation part 30 is fixed on the clamping chain through the clamping fixing pin 39, and the common rail clamp can be driven to move through the clamping chain, so as to complete the transfer of the workpiece. The common rail clamps on the clamping chain can be conveniently positioned through the clamping positioning sleeve 15, so that they can be aligned with the workpiece to be clamped, thereby completing the clamping action. By installing multiple groups of the common rail clamps of the utility model on the clamping chain, the common rail clamps can be applied to intelligent manufacturing production lines, realize batch clamping, conveying and processing of workpieces, realize intelligent and automatic production, and improve production efficiency.

[0041] The above is a further detailed description of the utility model made in combination with the specific embodiments, and the utility model specific implementation cannot be limited to this; for the skilled in the art to which the utility model belongs and related technical field, the expansion and operation method, data replacement made on the premise of the utility model technical scheme idea, should fall within the protection scope of the utility model.

Claims

1. An automated co-rail clamp that clamps a length adjustable, characterized by: Including the right plate (1) of clamp, the left plate (22) of clamp, the profile change plate (21) of clamp, the profile change drive screw (2) of clamp, the profile change guide rod (17) of clamp, left clamp and right clamp;The profile change guide rod (17) both ends are fixedly connected on the right plate (1) of clamp and the left plate (22) of clamp, the profile change drive screw (2) both ends are rotatably connected on the right plate (1) of clamp and the left plate (22) of clamp, and the left end of profile change drive screw (2) is stretched out the outside of the left plate (22) of clamp and is equipped with clamp screw rod rotating wheel (3);The left clamp is set on the profile change plate (21) of clamp, the right clamp is set on the right plate (1) of clamp, the profile change plate (21) of clamp is set on the profile change drive screw (2) of clamp and the profile change guide rod (17) of clamp, and the profile change plate (21) is equipped with trapezoidal nut with the profile change drive screw (2) of clamp screw connection.

2. The automated common rail clamp of claim 1, wherein: The left or right clamp comprises a clamp opening and closing plate connecting rod (7), a clamp opening and closing plate rotating shaft (8), a clamp spring pull rod (10), a clamp left opening and closing rod (11), a clamp right opening and closing rod (12), a lower clamp limiting block (13), an upper clamp limiting block (14), a clamp left opening and closing rod fixing plate (18) or a clamp right opening and closing rod fixing plate (19), a clamp opening and closing fixing block (20), a clamp spring seat (29), a tensile spring (36) and two clamp swing side plates (24); the clamp swing side plate (24) is in a stepped shape, comprising a rotating connection part (241) at the lower end, a clamping part (243) at the upper end and a clamping limiting part (242) in the middle; the clamp right plate (1) and the clamp shape changing plate (21) are provided with grooves matching the clamping limiting part (242) at the top; the clamp opening and closing fixing block (20) is installed on the right upper part of the clamp right plate (1) and the left upper part of the clamp shape changing plate (21), the clamp opening and closing plate rotating shaft (8) is sleeved in the clamp opening and closing fixing block (20), and the two ends of the clamp opening and closing plate rotating shaft (8) are installed on the rotating connection part (241) of the clamp swing side plate (24), the clamping limiting parts (242) of the two clamp swing side plates (24) are fixedly connected through the clamp opening and closing plate connecting rod (7), the two ends of the clamp left opening and closing rod fixing plate (18) and the clamp right opening and closing rod fixing plate (19) are fixed on the clamping parts (243) of the clamp swing side plates (24) of the left clamp and the right clamp respectively, the clamp left opening and closing rod (11) is arranged on the clamp left opening and closing rod fixing plate (18), and the clamp right opening and closing rod (12) is arranged on the clamp right opening and closing rod fixing plate (19); the upper clamp limiting block (14) is installed on the right side of the left opening and closing rod fixing plate (18) and the left side of the clamp right opening and closing rod fixing plate (19), and the lower clamp limiting block (13) is installed on the left upper part of the clamp right plate (1) and the right upper part of the clamp shape changing plate (21); the clamp spring seat (29) is arranged on the left side of the clamp right plate (1) and the right side of the clamp shape changing plate (21), the clamp spring pull rod (10) is arranged outside the clamping part (243) of the clamp swing side plate (24) of the left clamp and the right clamp, and the two ends of the tensile spring (36) are fixed on the clamp spring pull rod (10) and the clamp spring seat (29) respectively.

3. The automated common rail clamp of claim 1, wherein: The clamp shape changing sensing rod (9) arranged at the top of the clamp shape changing plate (21) is used for measuring the length of the workpiece to be clamped and feeding back a signal to control the rotation of the clamp lead screw rotating wheel (3), so that the distance between the left clamp and the right clamp is automatically matched with the length of the workpiece to be clamped.

4. The automated common rail clamp of claim 1, wherein: The bottom of the clamp right plate (1) and the clamp left plate (22) is provided with a clamp chain installation part (30).

5. The automated common rail clamp of claim 1, wherein: The right end of the clamp changing drive screw (2) extends outside the clamp right plate (1) and is sequentially sleeved with a clamp clutch spring (28), a clamp clutch plate (26), a clamp friction plate (27), a clamp stop ring (23) and a hexagonal nut (38). The two ends of the clamp clutch spring (28) are respectively abutted against the clamp right plate (1) and the clamp clutch plate (26). The clamp right plate (1) is provided with a clamp screw rod clutch guide sleeve (5). The clamp clutch plate (26) is fixedly connected with the right end of a clamp screw rod clutch guide rod (16). The left end of the clamp screw rod clutch guide rod (16) is sleeved in the clamp screw rod clutch guide sleeve (5).

6. The automated common rail clamp of adjustable clamped length according to any one of claims 1-5, wherein: The clamp right plate (1) and the clamp left plate (22) are provided with a clamp screw rod rotating sliding sleeve (4). The two ends of the clamp changing drive screw (2) are sleeved with bearings (35). The bearings (35) at the two ends of the clamp changing drive screw (2) are respectively sleeved in the screw rod rotating sliding sleeves (4) of the clamp right plate (1) and the clamp left plate (22).

7. The automated common rail clamp of adjustable clamped length according to any one of claims 1-5, wherein: The clamp changing guide rod (17) is sleeved with a linear bearing (34). The clamp changing plate (21) is provided with a clamp changing guide seat (6). The linear bearing (34) is installed in the clamp changing guide seat (6).

8. The automated common rail clamp of adjustable clamped length according to any one of claims 1-5, wherein: The bottom of the clamp right plate (1) and the clamp left plate (22) is fixedly connected through clamp connecting flat steels (25) on both sides.

9. The automated common rail clamp of adjustable clamped length according to any one of claims 1-5, wherein: The bottom of the clamp right plate (1) and the clamp left plate (22) is provided with a clamp positioning sleeve (15).

10. The automated common rail clamp of adjustable clamped length according to any one of claims 1-5, wherein: The outer side of the clamp left plate (22) is provided with a clamp mark (32).

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