A stable and efficient precision flat-jaw pliers

Abstract

This invention relates to the field of flat-jaw pliers, and more particularly to a stable and efficient precision flat-jaw pliers. It includes a support, a fixed jaw mounted on the support, a sliding shell slidably mounted on the support, a first ratchet fixedly connected to the support, a first sliding frame slidably mounted on the sliding shell, a first tension spring fixedly connected between the first sliding frame and the sliding shell, a second ratchet fixedly connected to the first sliding frame and cooperating with the first ratchet, a fixed base mounted on the sliding shell, a first screw rotatably mounted on the fixed base, a fixed shell slidably mounted on the fixed base, a second sliding frame threadedly engaged with the first screw within the fixed shell, a movable jaw slidably mounted on the fixed base and fixedly connected to the fixed shell, and an adjustment mechanism provided on the fixed shell. This invention facilitates the rapid movement of the movable jaw towards the workpiece, followed by rotating the first screw to slowly move the movable jaw and firmly clamp the workpiece, improving operator efficiency. The adjustment mechanism allows the operator to easily adjust the clamping force between the movable and fixed jaws.

Description

Technical Field

[0001] This invention relates to the field of flat-nose pliers technology, and in particular to a stable and efficient precision flat-nose pliers. Background Technology

[0002] Flat-jaw vises are widely used in machining. They consist of movable jaws, fixed jaws, a support, and a screw. The movable jaws slide on the support, and the screw adjusts the movement of the movable jaws, bringing them closer to the fixed jaws to clamp the workpiece.

[0003] In existing flat-jaw pliers, adjusting the speed of the movable jaw by rotating the screw is slow. Furthermore, in existing flat-jaw pliers, the movable jaw and the fixed jaw are located at opposite ends of the screw. When adjusting the movable jaw to clamp the workpiece, the screw needs to be rotated for a long time, most of which is useless rotation. This results in slow clamping efficiency and wasted time.

[0004] Therefore, it is necessary to develop a stable and efficient precision flat-nose pliers to meet the needs of practical use. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, a stable and efficient precision flat-jaw pliers is provided.

[0006] The technical solution adopted by this invention to solve its technical problem is as follows: a stable and efficient precision flat-jaw pliers, comprising a support, a fixed jaw mounted on the support, a sliding shell slidably disposed on the support, symmetrically distributed first ratchet bars fixedly connected to the support, symmetrically distributed first sliding frames slidably disposed on the sliding shell, a first tension spring fixedly connected between the first sliding frames and the sliding shell, a second ratchet bar fixedly connected to the first sliding frame and engaging with the adjacent first ratchet bar, a fixed seat mounted on the side of the sliding shell away from the support, a first screw rotatably disposed on the fixed seat, a hexagonal prism disposed on the side of the first screw away from the fixed seat, a fixed shell slidably disposed on the fixed seat, a second sliding frame slidably disposed within the fixed shell, the second sliding frame threadedly engaging with the first screw, a movable jaw slidably disposed on the fixed seat and fixedly connected to the fixed shell, an unlocking mechanism for releasing the engagement of the second ratchet bar with the adjacent first ratchet bar on the sliding shell, and an adjustment mechanism for adjusting the clamping force on the fixed shell.

[0007] More preferably, the second ratchet has evenly distributed balls on the side near the adjacent first ratchet to reduce the friction between the second ratchet and the adjacent first ratchet.

[0008] More preferably, the unlocking mechanism includes a first sliding plate, which is slidably disposed on the sliding shell. The first sliding plate has a blind hole and a guide groove. A first sliding frame has a protrusion, which engages with the guide groove of the first sliding plate. A third sliding frame is slidably disposed on the sliding shell by means of a support block. The third sliding frame engages with the blind hole of the first sliding plate. A second tension spring is fixedly connected between the third sliding frame and the support block of the sliding shell. An inclined surface is provided on the side of the third sliding frame away from the sliding shell. A fixing block is fixedly connected to the support by a connecting rod. The fixing block is triangular and engages with the inclined surface of the third sliding frame by compression.

[0009] More preferably, the adjusting mechanism includes a spring, which is fixed between the second sliding frame and the fixed housing, and the spring is located inside the fixed housing. The fixed housing is rotatably provided with a second screw, and the fixed housing is fixedly connected with a first fixed rod. The first fixed rod is slidably provided with a sliding block that is threadedly engaged with the second screw. The sliding block is slidably provided with a first sliding rod. A third tension spring is fixedly connected between the first sliding rod and the sliding block. The second sliding frame is provided with a blind hole that engages with the first sliding rod. The fixed housing is provided with a limiting component for limiting the second sliding frame.

[0010] More preferably, the upper side of the first fixed rod is provided with a scale, and the sliding block cooperates with the scale on the first fixed rod to precisely adjust the clamping force between the fixed jaws and the movable jaws.

[0011] More preferably, the limiting component includes a liquid storage shell, which is fixed to the fixed shell via a connecting rod. A second sliding plate is slidably disposed inside the liquid storage shell. The liquid storage shell is connected to a conduit, which is fixed to and connected to the fixed shell. A third sliding plate is slidably disposed on the conduit. A fixed frame is fixed to the third sliding plate via a connecting rod. The fixed frame is slidably engaged with the first sliding rod. The liquid storage shell and the conduit are filled with liquid.

[0012] More preferably, it also includes two sets of clamping mechanisms. Both the fixed jaw and the movable jaw have cavities. The two sets of clamping mechanisms are respectively disposed in the cavities of the fixed jaw and the movable jaw. The clamping mechanisms in the fixed jaw and the movable jaw are symmetrically distributed. The clamping mechanisms are used to fit workpieces of different specifications. Both the fixed jaw and the movable jaw have sliding grooves. The clamping mechanism located in the movable jaw includes a fourth sliding plate, which is slidably disposed in the sliding groove of the movable jaw. The fourth sliding plate has protrusions and evenly distributed second sliding rods slidably disposed on the fourth sliding plate. A fourth tension spring is fixed between the second sliding rod and the adjacent fourth sliding plate. The second sliding rod passes through the movable jaw and is slidably connected to it. A rotating plate is rotatably provided on the upper part of the movable jaw. The rotating plate has a guide groove that cooperates with the protrusion on the fourth sliding plate. A third sliding rod is slidably provided on the rotating plate. A fifth tension spring is fixed between the third sliding rod and the rotating plate. The movable jaw has two blind holes. The blind holes of the movable jaw are limited to the third sliding rod. A first locking component and a second locking component are provided in the cavity of the movable jaw. Both the first locking component and the second locking component are used to limit the adjacent second sliding rod.

[0013] More preferably, the end of the second sliding rod that penetrates the movable jaw is provided with an elastic block for fitting the sidewall of different workpieces.

[0014] More preferably, the first locking assembly includes a fourth sliding frame, which is slidably disposed within the cavity of the movable jaw. The fourth sliding frame is rotatably provided with a third screw, which is threadedly connected to the movable jaw. The fourth sliding frame has symmetrically distributed first inclined grooves. Symmetrically distributed second fixed rods are fixedly connected within the cavity of the movable jaw. Symmetrically distributed fifth sliding plates are slidably disposed between the symmetrically distributed second fixed rods. The fifth sliding plates have symmetrically distributed protrusions, which engage with adjacent first inclined grooves. The fifth sliding plates have evenly distributed grooves, which engage with adjacent second sliding rods.

[0015] More preferably, the second locking assembly includes symmetrically distributed sixth sliding plates, each of which is slidably disposed on symmetrically distributed second fixed rods. The symmetrically distributed sixth sliding plates are located between symmetrically distributed fifth sliding plates. The sixth sliding plates are inclined and have uniformly distributed grooves. The grooves of the sixth sliding plates cooperate with the adjacent second sliding rods. The sixth sliding plates are provided with symmetrically distributed protrusions. The fourth sliding frame is provided with symmetrically distributed second inclined grooves, which cooperate with the protrusions of the adjacent sixth sliding plates.

[0016] The present invention has the following advantages: The limiting cooperation between the second ratchet and the adjacent first ratchet facilitates the rapid movement of the movable jaws towards the workpiece, improving operator efficiency. Subsequently, the rotation of the first screw causes the movable jaws to move slowly and firmly clamp the workpiece. The unlocking mechanism quickly releases the cooperation between the second ratchet and the adjacent first ratchet, allowing the operator to quickly remove the clamped workpiece, further improving operator efficiency. The adjustment mechanism allows the operator to precisely adjust the clamping force of the movable and fixed jaws by rotating the first screw to adjust the sliding block and the first sliding rod. The movement of the third sliding plate in the limiting assembly blocks the guide tube, preventing the spring force from acting entirely on the second screw and sliding block, thus ensuring the stability of the device's tight adjustment. The evenly distributed extension and retraction of the second sliding rods in the clamping mechanism, combined with the restriction of the adjacent second sliding rods by the fifth sliding plate in the first locking assembly and the restriction of the adjacent second sliding rods by the sixth sliding plate in the second locking assembly, allows the device to fix workpieces of different shapes, improving its applicability. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a cross-sectional view of the support, fixing jaws, and other parts of the present invention;

[0019] Figure 3 This is a bottom view of the structure at the sliding shell of the present invention;

[0020] Figure 4 This is a cross-sectional view of the structure at the sliding shell of the present invention;

[0021] Figure 5 This is a cross-sectional view of the unlocking mechanism of the present invention;

[0022] Figure 6 This is a cross-sectional view of the adjusting mechanism of the present invention;

[0023] Figure 7 This is a schematic diagram of the structure of the limiting component of the present invention;

[0024] Figure 8 This is a cross-sectional view of the limiting component of the present invention;

[0025] Figure 9 This is a first cross-sectional view of the clamping mechanism of the present invention;

[0026] Figure 10 This is a second cross-sectional view of the clamping mechanism of the present invention;

[0027] Figure 11 This is a cross-sectional view of the first locking component of the present invention.

[0028] Meaning of the reference numerals in the diagram:

[0029] 1. Support; 101. Fixed jaws; 102. Sliding shell; 1021. First ratchet; 1022. First sliding frame; 1023. First tension spring; 1024. Second ratchet; 103. Fixed base; 104. First screw; 105. Fixed shell; 106. Second sliding frame; 107. Movable jaws; 2. First sliding plate; 201. Third sliding frame; 202. Second tension spring; 203. Fixed block; 3. Spring; 301. Second screw; 302. First fixed rod; 303. Sliding block; 3 04. First sliding rod; 305. Third tension spring; 4. Liquid storage shell; 401. Second sliding plate; 402. Conduit; 403. Third sliding plate; 404. Fixed frame; 5. Fourth sliding plate; 501. Second sliding rod; 502. Fourth tension spring; 503. Rotating plate; 504. Third sliding rod; 505. Fifth tension spring; 6. Fourth sliding frame; 601. Third screw; 602. First inclined groove; 603. Second fixed rod; 604. Fifth sliding plate; 7. Sixth sliding plate; 701. Second inclined groove. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] Example 1: A stable and efficient precision flat-jaw pliers, referring to... Figures 1-4As shown, the device includes a support 1. A fixed jaw 101 is bolted to the right side of the support 1. The support 1 has a guide rail, and a sliding shell 102 is slidably disposed within the guide rail. Two first ratchet bars 1021, symmetrically distributed front to back, are fixed to the support 1. Two first sliding frames 1022, symmetrically distributed front to back, are slidably disposed on the sliding shell 102. The first sliding frames 1022 are U-shaped. Two first tension springs 1023, symmetrically distributed left to right, are fixed between the first sliding frames 1022 and the sliding shell 102. The first tension springs 1023 are fitted onto the first sliding frames 1022. A second ratchet bar 1024 is fixed to the first sliding frame 1022. The second ratchet bar 1024 engages with the adjacent first ratchet bar 1021 for limiting. Several evenly distributed balls are provided on the outer surfaces of both second ratchet bars 1024. The balls of the second ratchet bar 1024 are used to reduce the friction between them and the adjacent first ratchet bars 1021. The upper side of the sliding shell 102 is bolted to... The device is equipped with a fixed base 103, on the left side of which a first screw 104 is rotatably mounted. The left side of the first screw 104 has a hexagonal prism, which allows the operator to rotate the first screw 104 using existing tools. A fixed shell 105 is slidably mounted on the fixed base 103, and a second sliding frame 106 is slidably mounted inside the fixed shell 105. The fixed shell 105 and the second sliding frame 106 cooperate to form two chambers. The lower part of the second sliding frame 106 is threadedly engaged with the first screw 104. A movable jaw 107 is slidably mounted on the fixed base 103 and fixedly connected to the fixed shell 105. The sliding shell 102 is equipped with an unlocking mechanism for releasing the second ratchet 1024 from the adjacent first ratchet 1021, which allows the operator to quickly remove the processed workpiece and improve the operator's work efficiency. The fixed shell 105 is equipped with an adjustment mechanism for adjusting the clamping force to prevent excessive clamping force between the movable jaw 107 and the fixed jaw 101 from damaging the workpiece.

[0032] Reference Figure 5As shown, the unlocking mechanism includes a first sliding plate 2, which is slidably disposed at the lower part of the sliding shell 102. The left side of the first sliding plate 2 has a blind hole, and the right side of the first sliding plate 2 has a guide groove in a V-shape. A first sliding bracket 1022 has a protrusion that mates with the guide groove on the first sliding plate 2. The sliding shell 102 is slidably disposed with a third sliding bracket 201 that mates with the blind hole on the first sliding plate 2, limited by a support block. A second tension spring 202 is fixedly connected between the third sliding bracket 201 and the support block of the sliding shell 102. Two sets are mounted on the third sliding frame 201. The left side of the third sliding frame 201 is set as an inclined surface. The support 1 is fixedly connected to the fixing block 203 that cooperates with the third sliding frame 201 through the connecting rod. The fixing block 203 is triangular. The operator presses the first sliding plate 2 to make the two first sliding frames 1022 drive the adjacent second ratchet 1024 to move. The movement of the second ratchet 1024 releases the cooperation with the adjacent first ratchet 1021, thereby quickly releasing the fixation of the workpiece, making it easy for the operator to quickly remove the workpiece and improve work efficiency.

[0033] Reference Figures 5-7 As shown, the adjustment mechanism includes a spring 3, which is fixed between the second sliding frame 106 and the fixed housing 105. The spring 3 is located in the right cavity of the fixed housing 105. The fixed housing 105 is rotatably equipped with a second screw 301, and a first fixed rod 302 is fixedly connected to the fixed housing 105. The first fixed rod 302 is located in front of the second screw 301. A sliding block 303 is slidably mounted on the first fixed rod 302, and the sliding block 303 is threadedly engaged with the second screw 301. The upper side of the first fixed rod 302 is provided with a scale, and the sliding block 303 engages with the scale on the first fixed rod 302, which facilitates the operator to accurately adjust the clamping force between the fixed jaw 101 and the movable jaw 107. A first sliding rod 304 is vertically slidably arranged in the middle. A third tension spring 305 is fixedly connected between the first sliding rod 304 and the sliding block 303. The third tension spring 305 is sleeved on the first sliding rod 304 and is located on the upper side of the sliding block 303. The second sliding frame 106 is provided with a blind hole, which cooperates with the first sliding rod 304. The fixed shell 105 is provided with a limiting component for limiting the second sliding frame 106. By rotating the second screw 301, the indicator scale of the sliding block 303 on the first fixed rod 302 is changed, which makes it easy for the operator to control the compression deformation of the spring 3, thereby accurately adjusting the squeezing force on the workpiece between the movable jaw 107 and the fixed jaw 101.

[0034] Reference Figure 7 and Figure 8As shown, the limiting assembly includes a liquid storage shell 4, which is fixed to the left side wall of the fixed shell 105 via a connecting rod. A second sliding plate 401 is slidably disposed inside the liquid storage shell 4. The side wall of the second sliding plate 401 is provided with a sealing ring that cooperates with the liquid storage shell 4. A conduit 402 is connected to the right side of the liquid storage shell 4, and the front side of the conduit 402 is fixed to and connected to the fixed shell 105. A third sliding plate 403 is slidably disposed on the upper part of the conduit 402. A fixed frame 404 is fixed to the upper end of the third sliding plate 403 via a connecting rod. The first sliding rod 304 is provided with an annular groove, and the fixed frame 404 is located at the first sliding rod 304. The annular groove of the moving rod 304, the liquid storage shell 4, and the conduit 402 are filled with liquid. When the first sliding rod 304 moves and inserts into the blind hole of the second sliding frame 106, the third sliding plate 403 is inserted into the conduit 402 and blocks the flow of liquid in the conduit 402. This ensures that the left cavity formed by the cooperation of the fixed shell 105 and the second sliding frame 106 is filled with a constant volume of liquid, thereby ensuring that the second sliding frame 106 is stationary relative to the fixed shell 105. This prevents the spring force of the spring 3 from acting entirely on the sliding block 303 and the second screw 301, ensuring the precision and accuracy of the adjustment of this device.

[0035] In the initial state, the first sliding rod 304 is inserted into the blind hole of the second sliding frame 106. At this time, the second sliding frame 106 remains relatively stationary with the fixed shell 105 through the first sliding rod 304, the sliding block 303, and the second screw 301.

[0036] When fixing the workpiece, the operator first places the workpiece on the upper surface of the support 1 and makes the workpiece fit against the left side of the fixed jaw 101. Then the operator pushes the fixed seat 103 and the sliding shell 102 to the right. The fixed seat 103 drives the connected parts on it to move to the right together, so that the right side of the movable jaw 107 on the fixed seat 103 quickly approaches the fixed jaw 101. During the movement of the sliding shell 102, under the tension of the first tension spring 1023, the two first sliding frames 1022 drive the adjacent second ratchet 1024 to press against the adjacent first ratchet 1021. At the same time, due to the cooperation between the first ratchet 1021 and the adjacent second ratchet 1024, the first ratchet 1021 can only move to the right.

[0037] When the right side of the movable jaw 107 moves close to the workpiece, the operator stops pushing the fixed seat 103. Then, the operator rotates the first screw 104 using an existing torsion tool. The rotation of the first screw 104 causes the second sliding frame 106 to move to the right. The rightward movement of the second sliding frame 106 drives the fixed shell 105 and the movable jaw 107 to move through the first sliding rod 304, the sliding block 303, and the second screw 301. Due to the limiting effect of the first ratchet 1021 and the adjacent second ratchet 1024, the sliding shell 102 and the fixed seat 103 cannot move to the left. When the movable jaw 107 is in contact with the left side wall of the workpiece, the operator continues to rotate the first screw 104 to make the movable jaw 107 press against the workpiece, thus firmly fixing the workpiece between the movable jaw 107 and the fixed jaw 101, completing the fixing of the workpiece. The above operation method greatly improves the operator's work efficiency. Afterwards, the remaining processing operations are performed on the clamped workpiece.

[0038] After the processing operation is completed, the operator presses the first sliding plate 2 with existing tools. The first sliding plate 2 moves to the right under the pressure. The rightward movement of the first sliding plate 2 causes its upper guide groove to press against the protrusions of the two first sliding frames 1022, bringing the two first sliding frames 1022 closer together until the third sliding frame 201 is directly opposite the blind hole of the first sliding plate 2. Under the tension of the second tension spring 202, the lower part of the third sliding frame 201 is inserted into the blind hole of the first sliding plate 2. At the same time, during this process, the movement of the first sliding frame 1022 drives the adjacent second ratchet 1024 to move and release the engagement with the adjacent first ratchet 1021. Due to the ball bearings on the side wall of the first ratchet 1021, the resistance encountered by the first ratchet 1021 during its movement is small, making it easy for the operator to release the engagement between the second ratchet 1024 and the adjacent first ratchet 1021, quickly releasing the fixation of the processed workpiece, and making it easy for the operator to quickly remove the processed workpiece, further improving the operator's work efficiency.

[0039] After releasing the workpiece from its fixation, the operator pulls the fixing seat 103 to the left to its initial position. The fixing seat 103 drives the sliding shell 102 to move and reset, so that the inclined surface of the third sliding frame 201 on the sliding shell 102 engages with the fixing block 203. Under the limiting action of the fixing block 203, the third sliding frame 201 moves upward and resets, stretching the second tension spring 202. At the same time, the third sliding frame 201 moves upward and releases its engagement with the blind hole on the first sliding plate 2. At this time, under the tension of the four first tension springs 1023, the two second ratchet bars 1024 re-engage with the adjacent first ratchet bars 1021. Then, the operator rotates the first screw 104 in the opposite direction to perform the above-mentioned reverse operation. The above operation can be repeated when fixing other workpieces.

[0040] When clamping workpieces of different materials, the operator adjusts the clamping force of the movable jaw 107 and the fixed jaw 101 according to the material of the workpiece. The operator first pulls the first sliding rod 304 upward, so that the first sliding rod 304 is released from the blind hole on the second sliding frame 106. At the same time, the first sliding rod 304 drives the fixed frame 404 and the third sliding plate 403 upward, so that the third sliding plate 403 releases the obstruction of the guide tube 402. Then the operator rotates the second screw 301. The rotation of the second screw 301 causes the sliding block 303 to move on the first fixed rod 302, so that the sliding block 303 indicates the corresponding scale on the first fixed rod 302.

[0041] The operator then repeats the above operation, moving the movable jaw 107 to press the workpiece. The movable jaw 107 first moves to align with the left side of the workpiece. Then, the operator continues to rotate the first screw 104, causing the second sliding frame 106 to move further to the right. Since the first sliding rod 304 is not yet inserted into the blind hole of the second sliding frame 106, the continued rightward movement of the second sliding frame 106 compresses the spring 3. The spring 3 deforms, generating elastic force. Simultaneously, the movement of the second sliding frame 106 causes the liquid in the storage tank 4 to enter the left side of the fixed shell 105 through the conduit 402. During the process, the second sliding plate 401 always moves in close contact with the liquid inside the liquid storage shell 4. At this time, the elastic force of the spring 3 is the clamping force of the movable jaw 107 and the fixed jaw 101 on the workpiece. When the second sliding frame 106 moves to the point where its blind hole is directly opposite the lower part of the first sliding rod 304, under the pulling force of the third tension spring 305, the lower part of the first sliding rod 304 is inserted into the blind hole of the second sliding frame 106. At this time, the elastic force of the spring 3 is the scale value indicated by the sliding block 303 on the first fixed rod 302, so as to avoid the operator from damaging the workpiece due to excessive clamping force when fixing the workpiece.

[0042] During the process of inserting the first sliding rod 304 into the blind hole of the second sliding frame 106, the first sliding rod 304 drives the third sliding plate 403 to move down together through the fixed frame 404 and its connecting rod. The third sliding plate 403 moves down and seals with the conduit 402, that is, the third sliding plate 403 blocks the conduit 402. At this time, the left cavity of the second sliding frame 106 and the fixed shell 105 is filled with liquid, that is, the second sliding frame 106 remains stationary relative to the fixed shell 105, ensuring the stability of the movable jaw 107 and the fixed jaw 101 in clamping the workpiece, and at the same time avoiding the clamping force between the movable jaw 107 and the fixed jaw 101 from being entirely applied to the second screw 301 and the sliding block 303, ensuring the accuracy and precision of the second screw 301 in adjusting the clamping force.

[0043] When fixing workpieces of different heights, the operator adds a thickening plate between the fixed jaw 101 and the support 1, and at the same time adds a thickening plate of the same thickness between the sliding shell 102 and the fixed seat 103, so that the fixed jaw 101 and the movable jaw 107 clamp the middle of the workpiece, thereby improving the stability of clamping and fixing.

[0044] Example 2: Based on Example 1, referring to... Figure 1 , Figure 9 and Figure 10 As shown, it also includes two sets of clamping mechanisms. Both the fixed jaw 101 and the movable jaw 107 have cavities. The two sets of clamping mechanisms are respectively disposed within the cavities of the fixed jaw 101 and the movable jaw 107. The clamping mechanisms in the fixed jaw 101 and the movable jaw 107 are symmetrically distributed. The clamping mechanisms are used to fit workpieces of different specifications, thereby improving the applicability of this device. Both the fixed jaw 101 and the movable jaw 107 have sliding grooves. The clamping mechanism located in the movable jaw 107 includes a fourth sliding plate 5, which is slidably disposed within the groove. Within the groove of the movable jaw 107, a protrusion is provided on the upper part of the fourth sliding plate 5. The protrusion of the fourth sliding plate 5 penetrates the movable jaw 107. Several evenly distributed second sliding rods 501 are slidably arranged on the fourth sliding plate 5. A fourth tension spring 502 is fixedly connected between the second sliding rod 501 and the adjacent fourth sliding plate 5. The fourth tension spring 502 is sleeved on the adjacent second sliding rod 501. The right part of the second sliding rod 501 penetrates the movable jaw 107 and is slidably connected to it. An elastic block is provided at the right end of the second sliding rod 501 to conform to the side wall of different workpieces, thereby improving the clamping stability of the device. The movable jaw 107 has a rotating plate 503 rotatably mounted on its upper part. The rotating plate 503 has a guide groove, with its left end positioned rearward and its right end forward. The guide groove of the rotating plate 503 engages with a protrusion on the fourth sliding plate 5. A third sliding rod 504 is slidably mounted on the left side of the rotating plate 503. A fifth tension spring 505 is fixedly connected between the third sliding rod 504 and the rotating plate 503. The fifth tension spring 505 is sleeved on the adjacent third sliding rod 504 and is located on the upper side of the rotating plate 503. The movable jaw 107 also has [missing information - likely related to a specific feature or feature]. The device has blind holes, and the blind holes of the movable jaw 107 are matched with the adjacent third sliding rod 504 for limiting. The cavity of the movable jaw 107 is provided with a first locking component and a second locking component. Both the first locking component and the second locking component are used to limit the adjacent second sliding rod 501. By rotating the rotating plate 503, several second sliding rods 501 extend out from the movable jaw 107. Then the movable jaw 107 moves to fit the workpiece, and several second sliding rods 501 retract accordingly and fit tightly to the workpiece, which facilitates the fixing of workpieces of different shapes and improves the applicability of the device.

[0045] Reference Figure 9 and Figure 11 As shown, the first locking assembly includes a fourth sliding frame 6, which is slidably disposed within the cavity of the movable jaw 107. A third screw 601 is rotatably disposed on the upper part of the fourth sliding frame 6, and the left part of the third screw 601 is threadedly connected to the movable jaw 107. The fourth sliding frame 6 has four first inclined grooves 602 symmetrically distributed vertically. Two second fixed rods 603 symmetrically distributed front and rearly are fixedly connected within the cavity of the movable jaw 107. Two fifth sliding plates 604 symmetrically distributed vertically are slidably disposed between the two second fixed rods 603. The two fifth sliding plates 604 are located outside the plurality of second sliding rods 501, and protruding posts are provided on both the front and rear sides of the fifth sliding plates 604. The protrusion of the fifth sliding plate 604 engages with the adjacent first inclined groove 602. The fifth sliding plate 604 is provided with evenly distributed grooves, and a rubber block is provided in the groove of the fifth sliding plate 604. The groove of the fifth sliding plate 604 engages with the adjacent second sliding rod 501 to increase the friction between the fifth sliding plate 604 and the adjacent second sliding rod 501. By rotating the third screw 601, the fourth sliding frame 6 is moved. The fourth sliding frame 6 moves through the first inclined groove 602 on it, causing the two fifth sliding plates 604 to come together and squeeze and limit the second sliding rod 501. The moved second sliding rod 501 is limited and fixed, which facilitates the device to quickly clamp and fix the processed workpiece of this shape.

[0046] Reference Figure 9 and Figure 11 As shown, the second locking assembly includes two sixth sliding plates 7 symmetrically distributed vertically. The symmetrically distributed sixth sliding plates 7 are slidably mounted on two adjacent second fixed rods 603. The two sixth sliding plates 7 are located between two fifth sliding plates 604 and between several second sliding rods 501. The sixth sliding plates 7 are inclined. The outer surfaces of the two sixth sliding plates 7 are provided with uniformly distributed grooves. Rubber blocks are provided in the grooves of the sixth sliding plates 7. The grooves of the sixth sliding plates 7 cooperate with the adjacent second sliding rods 501 to increase the friction between the sixth sliding plates 7 and the adjacent second sliding rods 501. The sixth sliding plates 7 are provided with two protrusions symmetrically distributed front and back. The fourth sliding frame 6 is provided with four second inclined grooves 701 symmetrically distributed vertically. The second inclined grooves 701 cooperate with the protrusions of the adjacent sixth sliding plates 7. Since the sixth sliding plates 7 are inclined, during the movement of the fourth sliding frame 6, the two sixth sliding plates 7 move away from each other and press against the adjacent second sliding rods 501, further reinforcing the limitation of the second sliding rods 501.

[0047] When fixing workpieces of different shapes, the operator pulls the two third sliding rods 504 in sequence, causing the two rotating plates 503 to rotate respectively, and the two third sliding rods 504 to be inserted into the blind holes on the rear side of the fixed jaw 101 and the blind holes on the rear side of the movable jaw 107 respectively. The rotation of the rotating plate 503 causes its upper guide groove to press against the protrusion of the fourth sliding plate 5, causing the fourth sliding plate 5 to move. The movement of the fourth sliding plate 5 drives the movement of the connected second sliding rod 501 through the connected fourth tension spring 502. That is, the second sliding rod 501 on the left protrudes from the movable jaw 107, and the second sliding rod 501 on the right protrudes from the fixed jaw 101.

[0048] The above operation is repeated to move the movable jaw 107 to cooperate with the fixed jaw 101 to clamp the workpiece. Under the deformation and tension of the fourth tension spring 502, the second sliding rod 501 protruding from the movable jaw 107 and the fixed jaw 101 always fits against the side wall of the workpiece. Then, the operator rotates the two third screws 601 to bring the two fourth sliding frames 6 closer together. At this time, the fourth sliding frame 6 moves so that its first inclined groove 602 presses against the protrusion of the fifth sliding plate 604. After being pressed, the fifth sliding plate 604 moves so that its groove is tightly pressed against the adjacent second sliding rod 501, limiting and fixing the moved second sliding rod 501. This facilitates the fixing of workpieces of different properties by the device and improves the applicability of the device.

[0049] During the movement of the fourth sliding frame 6, the second inclined groove 701 on the fourth sliding frame 6 simultaneously presses against the protrusion of the adjacent sixth sliding plate 7. The groove of the sixth sliding plate 7, which is pressed against the adjacent second sliding rod 501, further limits and fixes the second sliding rod 501. Since the sixth sliding plate 7 is inclined, the sixth sliding plate 7 cooperates with the adjacent second sliding rod 501 to further restrict the second sliding rod 501 from retracting into the movable jaw 107 (or the fixed jaw 101), improving the stability of the device in clamping and fixing the workpiece. After all the workpieces of this type have been processed, the operator first rotates the two third screws 601 in the opposite direction to reset them, so that the fifth sliding plate 604 and the sixth sliding plate 7 release the limitation on the adjacent second sliding rod 501. Then, the operator rotates the two rotating plates 503 in the opposite direction to perform the above-mentioned reverse operation reset, that is, the second sliding rod 501 on the left is fully retracted into the movable jaw 107, and the second sliding rod 501 on the right is fully retracted into the fixed jaw 101, thereby restoring the initial state.

[0050] It should be noted that the above preferred embodiments are merely illustrative of the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A stable and efficient precision flat-jaw pliers, characterized in that, The system includes a support (1), a fixed jaw (101) mounted on the support (1), a sliding shell (102) slidably mounted on the support (1), symmetrically distributed first ratchet bars (1021) fixedly connected to the support (1), symmetrically distributed first sliding frames (1022) slidably mounted on the sliding shell (102), a first tension spring (1023) fixedly connected between the first sliding frames (1022) and the sliding shell (102), a second ratchet bar (1024) fixedly connected to the first sliding frame (1022) and cooperating with the adjacent first ratchet bar (1021), a fixed seat (103) mounted on the side of the sliding shell (102) away from the support (1), and a first tension spring (1023) rotatably mounted on the fixed seat (103). A screw (104) is provided with a hexagonal prism on the side away from the fixed seat (103). The fixed seat (103) is slidably provided with a fixed shell (105). A second sliding frame (106) is slidably provided inside the fixed shell (105). The second sliding frame (106) is threadedly engaged with the first screw (104). The fixed seat (103) is slidably provided with a movable jaw (107), and the movable jaw (107) is fixedly connected to the fixed shell (105). The sliding shell (102) is provided with an unlocking mechanism for releasing the second ratchet (1024) from the adjacent first ratchet (1021). The fixed shell (105) is provided with an adjustment mechanism for adjusting the bearing force. The unlocking mechanism includes a first sliding plate (2), which is slidably disposed on the sliding shell (102). The first sliding plate (2) is provided with a blind hole and a guide groove. The first sliding frame (1022) is provided with a protrusion. The protrusion of the first sliding frame (1022) cooperates with the guide groove of the first sliding plate (2). The sliding shell (102) is slidably disposed on a third sliding frame (201) through a support block. The third sliding frame (201) cooperates with the blind hole of the first sliding plate (2). A second tension spring (202) is fixed between the third sliding frame (201) and the support block of the sliding shell (102). The side of the third sliding frame (201) away from the sliding shell (102) is set as an inclined surface. The support (1) is fixedly connected to a fixing block (203) through a connecting rod. The fixing block (203) is triangular and is pressed against the inclined surface of the third sliding frame (201).

2. The stable and efficient precision flat-jaw pliers according to claim 1, characterized in that, The second ratchet (1024) has evenly distributed balls on the side near the adjacent first ratchet (1021) to reduce the friction between the second ratchet (1024) and the adjacent first ratchet (1021).

3. The stable and efficient precision flat-jaw pliers according to claim 1, characterized in that, The adjustment mechanism includes a spring (3), which is fixed between the second sliding frame (106) and the fixed shell (105), and the spring (3) is located inside the fixed shell (105). The fixed shell (105) is rotatably provided with a second screw (301), and the fixed shell (105) is fixedly connected with a first fixed rod (302). The first fixed rod (302) is slidably provided with a sliding block (303) that is threadedly engaged with the second screw (301). The sliding block (303) is slidably provided with a first sliding rod (304). A third tension spring (305) is fixedly connected between the first sliding rod (304) and the sliding block (303). The second sliding frame (106) is provided with a blind hole that engages with the first sliding rod (304). The fixed shell (105) is provided with a limiting component for limiting the second sliding frame (106).

4. The stable and efficient precision flat-jaw pliers according to claim 3, characterized in that, The upper side of the first fixed rod (302) is provided with a scale, and the sliding block (303) cooperates with the scale on the first fixed rod (302) to precisely adjust the clamping force between the fixed jaw (101) and the movable jaw (107).

5. The stable and efficient precision flat-jaw pliers according to claim 3, characterized in that, The limiting component includes a liquid storage shell (4), which is fixed to a fixed shell (105) via a connecting rod. A second sliding plate (401) is slidably disposed inside the liquid storage shell (4). A conduit (402) is connected to the liquid storage shell (4). The conduit (402) is fixed to and connected to the fixed shell (105). A third sliding plate (403) is slidably disposed on the conduit (402). A fixed frame (404) is fixed to the third sliding plate (403) via a connecting rod. The fixed frame (404) is slidably engaged with the first sliding rod (304). The liquid storage shell (4) and the conduit (402) are filled with liquid.

6. The stable and efficient precision flat-jaw pliers according to claim 1, characterized in that, It also includes two sets of clamping mechanisms. Both the fixed jaw (101) and the movable jaw (107) are provided with cavities. The two sets of clamping mechanisms are respectively set in the cavity of the fixed jaw (101) and the cavity of the movable jaw (107). The clamping mechanisms in the fixed jaw (101) and the movable jaw (107) are symmetrically distributed. The clamping mechanisms are used to fit workpieces of different specifications. Both the fixed jaw (101) and the movable jaw (107) are provided with sliding grooves. The clamping mechanism located in the movable jaw (107) includes a fourth sliding plate (5). The fourth sliding plate (5) is slidably set in the sliding groove of the movable jaw (107). The fourth sliding plate (5) is provided with a protrusion. The fourth sliding plate (5) is slidably set with evenly distributed second sliding rods (501). The second sliding rods (501) are adjacent to the fourth sliding plate (501). A fourth tension spring (502) is fixed between the sliding plates (5). A second sliding rod (501) penetrates the movable jaw (107) and is slidably connected to it. A rotating plate (503) is rotatably provided on the upper part of the movable jaw (107). The rotating plate (503) is provided with a guide groove that cooperates with the protrusion on the fourth sliding plate (5). A third sliding rod (504) is slidably provided on the rotating plate (503). A fifth tension spring (505) is fixed between the third sliding rod (504) and the rotating plate (503). The movable jaw (107) is provided with two blind holes. The blind holes of the movable jaw (107) are limited to the third sliding rod (504). A first locking component and a second locking component are provided in the cavity of the movable jaw (107). The first locking component and the second locking component are both used to limit the adjacent second sliding rod (501).

7. The stable and efficient precision flat-jaw pliers according to claim 6, characterized in that, The second sliding rod (501) has an elastic block at one end that penetrates the movable jaw (107) for fitting the sidewall of different workpieces.

8. A stable and efficient precision flat-jaw pliers according to claim 6, characterized in that, The first locking assembly includes a fourth sliding frame (6), which is slidably disposed in the cavity of the movable jaw (107). The fourth sliding frame (6) is rotatably provided with a third screw (601), which is threadedly connected to the movable jaw (107). The fourth sliding frame (6) is provided with symmetrically distributed first inclined grooves (602). Symmetrically distributed second fixed rods (603) are fixedly connected in the cavity of the movable jaw (107). Symmetrically distributed fifth sliding plates (604) are slidably disposed between the symmetrically distributed second fixed rods (603). The fifth sliding plate (604) is provided with symmetrically distributed protrusions. The protrusions of the fifth sliding plate (604) cooperate with the adjacent first inclined grooves (602). The fifth sliding plate (604) is provided with uniformly distributed grooves. The grooves of the fifth sliding plate (604) cooperate with the adjacent second sliding rods (501).

9. A stable and efficient precision flat-jaw pliers according to claim 8, characterized in that, The second locking assembly includes symmetrically distributed sixth sliding plates (7), each of which is slidably disposed on symmetrically distributed second fixed rods (603). The symmetrically distributed sixth sliding plates (7) are located between symmetrically distributed fifth sliding plates (604). The sixth sliding plates (7) are inclined and have uniformly distributed grooves. The grooves of the sixth sliding plates (7) cooperate with the adjacent second sliding rods (501). The sixth sliding plates (7) are provided with symmetrically distributed protrusions. The fourth sliding frame (6) is provided with symmetrically distributed second inclined grooves (701). The second inclined grooves (701) cooperate with the protrusions of the adjacent sixth sliding plates (7).

Images