Clamping tool
By introducing a locking mechanism into the clamping fixture, the problem of loose clamping fixture was solved, thereby improving the stability of the cell spacing and the processing quality.
Patent Information
- Application Number
- CN202422892726.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-11-26
AI Technical Summary
Existing clamping fixtures are prone to loosening when clamping battery cells, resulting in inconsistent cell spacing and affecting the quality of subsequent processing.
A clamping fixture was designed, comprising a base, a first clamping plate, a second clamping plate, a clamping mechanism, and a locking mechanism. The rotation of the lead screw is controlled by the locking and unlocking states of the locking mechanism to ensure that the clamping plate spacing remains stable.
This effectively reduces the risk of clamping fixtures becoming loose, ensures consistent cell spacing, and improves the reliability and quality of subsequent processing.
Smart Images
Figure CN223763025U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a clamping fixture. Background Technology
[0002] As the market penetration rate of new energy electric vehicles continues to rise and product competition intensifies, the quality requirements for batteries, as a crucial component of new energy electric vehicles, are also increasing. In actual production, battery cells need to be arranged neatly and clamped using fixtures to ensure consistent cell spacing for subsequent processing. However, existing clamping fixtures, which manually compress the cells, are prone to loosening afterward, resulting in inadequate clamping and affecting subsequent processing. Utility Model Content
[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a clamping fixture that is not easily loosened.
[0004] This utility model provides a clamping fixture, comprising: a base for supporting a workpiece; a first clamping plate mounted on the base; a second clamping plate movably mounted on the base, the first clamping plate and the second clamping plate being used to clamp the workpiece; a clamping mechanism including a lead screw, one end of which is connected to the second clamping plate, the lead screw being threadedly connected to the base, the lead screw being rotatable relative to the base to move the second clamping plate and change the distance between the first clamping plate and the second clamping plate; and a locking mechanism having a locked state and an unlocked state, wherein when the locking mechanism is in the locked state, the locking mechanism hinders the rotation of the lead screw, and when the locking mechanism is in the unlocked state, the lead screw is rotatable relative to the base.
[0005] The clamping fixture provided by this embodiment of the utility model has at least the following beneficial effects:
[0006] By setting a locking mechanism, the locking mechanism has a locked state and an unlocked state. When the locking mechanism is in the unlocked state, the lead screw can rotate relative to the base to drive the second clamping plate to move toward the first clamping plate to clamp the workpiece. When the locking mechanism is in the locked state, the lead screw is blocked by the locking mechanism and cannot rotate relative to the base, thereby reducing the risk of loosening.
[0007] According to some embodiments of the present invention, the clamping mechanism includes a chuck, the lead screw is fixedly connected to the chuck, the chuck includes a plurality of first mating parts distributed circumferentially, and when the locking mechanism is in the locking state, the locking mechanism engages with the first mating parts to restrict the rotation of the lead screw.
[0008] According to some embodiments of the present invention, the locking mechanism is installed on the second clamping plate. When the lead screw rotates relative to the base, the locking mechanism, the chuck, and the second clamping plate move synchronously relative to the base.
[0009] According to some embodiments of this utility model, the locking mechanism includes a fixed base and a snap-fit member. The fixed base is fixed to the second clamping plate, and the snap-fit member is slidably connected to the fixed base. The snap-fit member can slide relative to the fixed base to switch between a first position and a second position. The snap-fit member is provided with a second mating part, one of the first mating part and the second mating part being a slot and the other being a block. When the snap-fit member is in the first position, the block and the slot are engaged to restrict the rotation of the lead screw. When the snap-fit member is in the second position, the first mating part and the second mating part are separated from each other.
[0010] According to some embodiments of this utility model, the fixed base has a shaft hole and a limiting part, the snap-fit member includes a connecting part and a third mating part, the connecting part is rotatably engaged with the shaft hole and can move along the shaft hole, the second mating part and the third mating part are respectively disposed at both ends of the connecting part; the snap-fit member can also rotate relative to the fixed base, thereby switching between the second position and the third position, when the snap-fit member is in the third position, the limiting part abuts against the third mating part to restrict the second mating part from sliding toward the first mating part.
[0011] According to some embodiments of the present invention, the third mating part protrudes relative to the outer peripheral surface of the connecting part, and the limiting part includes two protrusions, which are spaced apart and form a limiting groove between them. When the snap-fit member is in the first position, the third mating part is slidably disposed in the limiting groove. When the snap-fit member is in the third position, the end of the protrusion away from the chuck abuts against the end of the third mating part near the chuck.
[0012] According to some embodiments of the present invention, the locking mechanism includes an elastic element, the elastic element connecting the snap-fit member and the fixing seat, and the elastic force applied by the elastic element to the snap-fit member is used to reset the snap-fit member to the first position.
[0013] According to some embodiments of the present invention, the fixing seat has an installation groove, the second clamping plate closes the opening of the installation groove to form a cavity, and the chuck is disposed in the cavity.
[0014] According to some embodiments of the present invention, the locking mechanism includes a handle, which is located at the end of the latching member away from the chuck and protrudes outside the fixed base.
[0015] According to some embodiments of the present invention, the base includes a fixing plate, which is fixed relative to the first clamping plate. The second clamping plate is located between the first clamping plate and the fixing plate. The fixing plate has a guide hole and a threaded hole. The clamping mechanism includes a guide rod, which is connected to the second clamping plate. The guide rod is slidably engaged with the guide hole, and the lead screw is threadedly engaged with the threaded hole.
[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:
[0018] Figure 1 This is a three-dimensional structural diagram of a clamping fixture with a battery cell assembly installed in one embodiment of the present invention;
[0019] Figure 2 yes Figure 1 A partial structural diagram of the right side of the clamping fixture;
[0020] Figure 3 yes Figure 1 A three-dimensional structural diagram of the clamping mechanism of the clamping fixture;
[0021] Figure 4 yes Figure 1 A three-dimensional structural diagram of the locking mechanism and chuck of the clamping fixture;
[0022] Figure 5 yes Figure 4 A schematic diagram of the locking mechanism and chuck in the locked state;
[0023] Figure 6 yes Figure 4 A schematic diagram of the locking mechanism and chuck in the unlocked state;
[0024] Figure 7 yes Figure 4 A schematic diagram of the locking mechanism and chuck in another unlocked state.
[0025] Figure label:
[0026] Clamping fixture 100; battery cell assembly 200; base 10; fixing plate 11; guide hole 111; threaded hole 112; support carrier 12; roller 13; first clamping plate 20; second clamping plate 30; clamping mechanism 40; lead screw 41; chuck 42; first mating part 421; rudder 43; guide rod 44; locking mechanism 50; fixing seat 51; shaft hole 511; limiting part 512; limiting groove 513; mounting groove 514; snap-fit part 52; second mating part 521; connecting part 522; third mating part 523; handle 53. Detailed Implementation
[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0029] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0031] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0032] In related technologies, when workers manually squeeze the battery cell assembly to achieve the appropriate cell spacing using clamping fixtures, vibrations can occur during transport and loading / unloading, causing the fixture to loosen. Alternatively, human error can also cause loosening, resulting in a larger cell spacing than originally intended, affecting subsequent processing. For example, if the battery cell assembly needs welding after being squeezed by the clamping fixture, loosening leading to an excessively large cell spacing can cause inconsistencies between the battery cells and the battery cells, as well as misalignment and incomplete welds, ultimately rendering the entire battery module unusable.
[0033] Please see Figure 1 and Figure 2 , Figure 1 This is a three-dimensional structural diagram of a clamping fixture 100 on which a battery cell assembly 200 is installed, according to one embodiment of the present invention. Figure 2 yes Figure 1 This is a partial structural diagram of the right side of the clamping fixture 100. This embodiment of the invention provides a clamping fixture 100, which includes a base 10, a first clamping plate 20, a second clamping plate 30, a clamping mechanism 40, and a locking mechanism 50. The base 10 is used to support the workpiece. The first clamping plate 20 is mounted on the base 10, and the second clamping plate 30 is movably mounted on the base 10. The first clamping plate 20 and the second clamping plate 30 are used to clamp the workpiece. The clamping mechanism 40 includes a lead screw 41, one end of which is connected to the second clamping plate 30. The lead screw 41 is threadedly connected to the base 10. The lead screw 41 can rotate relative to the base 10, so that the second clamping plate 30 moves and changes the distance between the first clamping plate 20 and the second clamping plate 30. The locking mechanism 50 has a locked state and an unlocked state. When the locking mechanism 50 is in the locked state, the locking mechanism 50 prevents the lead screw 41 from rotating. When the locking mechanism 50 is in the unlocked state, the lead screw 41 can rotate relative to the base 10.
[0034] Specifically, in this embodiment, the workpiece is a battery cell assembly 200, which includes multiple battery cells. In the arrangement direction of the battery cells, the first clamping plate 20 and the second clamping plate 30 are located on both sides of the multiple battery cells. It is understood that in other embodiments, the workpiece may also be other devices requiring clamping.
[0035] In this embodiment, the first clamping plate 20 is fixed to the base 10 by screws. In another embodiment, the first clamping plate 20 can also be fixed to the base 10 by snap-fitting, welding, or other methods. In yet another embodiment, the first clamping plate 20 can also be an integral structure with the base 10. In yet another embodiment, the first clamping plate 20 can also be movably connected to the base 10, and the clamping fixture 100 also includes a motion mechanism (not shown), which is disposed on the base 10 and connected to the first clamping plate 20. The motion mechanism can drive the first clamping plate 20 to move closer to or away from the second clamping plate 30.
[0036] In this embodiment, the second clamping plate 30 is slidably connected to the base 10. When the lead screw 41 rotates relative to the base 10, the lead screw 41 can push the second clamping plate 30 towards the first clamping plate 20 to reduce the distance between the first clamping plate 20 and the second clamping plate 30, thereby compressing the battery cell assembly 200. Alternatively, the lead screw 41 can pull the second clamping plate 30 away from the first clamping plate 20 to increase the distance between the first clamping plate 20 and the second clamping plate 30, thereby releasing the battery cell assembly 200. In other embodiments, the lead screw 41 can also be configured to reduce the distance between the first clamping plate 20 and the second clamping plate 30 by pulling, and to increase the distance between the first clamping plate 20 and the second clamping plate 30 by pushing.
[0037] Understandably, vibration or human error can easily cause the lead screw 41 to loosen and rotate relative to the base 10. This causes the lead screw 41 to move the second clamping plate 30 away from the first clamping plate 20, resulting in an excessively large cell spacing in the battery cell assembly 200. The clamping fixture 100 provided in this embodiment of the invention, by setting a locking mechanism 50, has a locked state and an unlocked state. When the locking mechanism 50 is in the unlocked state, the lead screw 41 can rotate relative to the base 10, causing the second clamping plate 30 to move towards the first clamping plate 20 to clamp the battery cell assembly 200. When the locking mechanism 50 is in the locked state, the lead screw 41 is obstructed by the locking mechanism 50 and cannot rotate relative to the base 10, thereby reducing the risk of loosening. The cell spacing of the battery cell assembly 200 can maintain its originally set size, facilitating subsequent normal processing.
[0038] It should be noted that when the locking mechanism 50 is in the locked state, it can prevent the lead screw 41 from rotating by clamping, engaging, or abutting. For example, in some embodiments, the lead screw 41 has a hexagonal end, and the locking mechanism 50 restricts the rotation of the lead screw 41 by clamping this end. In other embodiments, the lead screw 41 has a radially extending hole, and the locking mechanism 50 restricts the rotation of the lead screw 41 by extending into this hole. In still other embodiments, the lead screw 41 has a radially extending protrusion on its side, and the locking mechanism 50 restricts the rotation of the lead screw 41 by abutting against the side of the protrusion.
[0039] In one embodiment of this implementation, please refer to Figure 1 and Figure 2 The base 10 includes a fixed plate 11, which is fixed relative to the first clamping plate 20. A second clamping plate 30 is located between the first clamping plate 20 and the fixed plate 11. The fixed plate 11 has a guide hole 111 and a threaded hole 112. The clamping mechanism 40 includes a guide rod 44, which is connected to the second clamping plate 30. The guide rod 44 is slidably engaged with the guide hole 111, and the lead screw 41 is threadedly engaged with the threaded hole 112. With this configuration, the second clamping plate 30 can be guided by the fixed plate 11 and the guide rod 44, and the second clamping plate 30 can be moved by the fixed plate 11 and the lead screw 41. The second clamping plate 30 has high motion accuracy, and its structure is relatively simple, which helps to reduce costs. At the same time, the sliding engagement between the guide hole 111 and the guide rod 44 can prevent the second clamping plate 30 from rotating with the lead screw 41, thereby ensuring that the second clamping plate 30 can move relative to the fixed plate 11 when the lead screw 41 rotates.
[0040] Specifically, there are multiple guide rods 44, all mounted on the second clamping plate 30 and arranged parallel to each other. There are also multiple guide holes 111, each slidingly engaging with one of the guide rods 44 to further improve the movement accuracy of the second clamping plate 30. A threaded hole 112 is located in the middle of the fixed plate 11. In this embodiment, there are four guide rods 44 and four guide holes 111. In other embodiments, the number of guide rods 44 and guide holes 111 may vary.
[0041] In this embodiment, the base 10 further includes a support carrier 12, which is used to be mounted on a support surface, which can be the ground, a wall, or the surface of other equipment. The support carrier 12 is used to support the battery cell assembly 200. A fixing plate 11 is mounted relatively vertically on the support carrier 12. The fixing plate 11 is located on the side of the second clamping plate 30 facing away from the first clamping plate 20 and is spaced apart from the second clamping plate 30.
[0042] In this embodiment, the base 10 also includes rollers 13, which are installed on the bottom side of the support carrier 12, and there are multiple rollers 13, so as to facilitate the movement of the support carrier 12 along the support surface and improve the convenience of the clamping fixture 100.
[0043] In one embodiment of this implementation, please refer to Figure 2 and Figure 3 , Figure 3 yes Figure 1A three-dimensional structural diagram of the clamping mechanism 40 of the clamping fixture 100 is shown. The clamping mechanism 40 includes a chuck 42, and a lead screw 41 is fixedly connected to the chuck 42. The chuck 42 includes a plurality of first mating parts 421 distributed circumferentially. When the locking mechanism 50 is in the locked state, the locking mechanism 50 engages with the first mating parts 421 to restrict the rotation of the lead screw 41. Specifically, the chuck 42 and the lead screw 41 are fixedly connected by a key, and the lead screw 41 can drive the chuck 42 to rotate and move relative to the base 10. The chuck 42 is installed at the end of the lead screw 41 near the second clamping plate 30. The plurality of first mating parts 421 are all provided on the outer circumferential surface of the chuck 42, and the angle between any two adjacent first mating parts 421 is the same. It should be noted that factors such as different cell spacing and different numbers of cells will affect the stroke required for the lead screw 41 to move during actual clamping. By providing multiple first mating parts 421 distributed circumferentially on the chuck 42, the locking mechanism 50 can engage with the corresponding first mating parts 421 according to the actual working conditions to limit the rotation of the lead screw 41, thereby improving its applicability.
[0044] In this embodiment, the chuck 42 abuts against the end face of the second clamping plate 30 so that the thrust of the lead screw 41 can be transmitted to the second clamping plate 30 through the chuck 42. In other embodiments, the lead screw 41 may also protrude relative to the chuck 42 and abut directly against the end face of the second clamping plate 30, so that the thrust of the lead screw 41 is directly transmitted to the second clamping plate 30.
[0045] In this embodiment, the clamping mechanism 40 also includes a rudder 43, which is installed at the end of the lead screw 41 away from the chuck 42. The rudder 43 is used for the user to apply torque to drive the lead screw 41 to rotate relative to the base 10.
[0046] In one embodiment of this implementation, please refer to Figure 2 and Figure 4 , Figure 4 yes Figure 1 A three-dimensional structural diagram of the locking mechanism 50 and chuck 42 of the clamping fixture 100 is shown. The locking mechanism 50 is mounted on the second clamping plate 30. When the lead screw 41 rotates relative to the base 10, the locking mechanism 50, chuck 42, and second clamping plate 30 move synchronously relative to the base 10. This arrangement ensures that the relative positions of the locking mechanism 50 and chuck 42 remain unchanged in the direction of movement of the second clamping plate 30, so that after the lead screw 41 drives the chuck 42 to move relative to the base 10, the locking mechanism 50 can engage with the corresponding first mating part 421 on the chuck 42.
[0047] In one embodiment of this implementation, please refer to Figure 2 and Figure 4The locking mechanism 50 includes a fixed base 51 and a latching member 52. The fixed base 51 is mounted and fixed to the second clamping plate 30. The latching member 52 is slidably connected to the fixed base 51 and can slide relative to the fixed base 51 to switch between a first position and a second position. Please refer to the following: Figure 5 , Figure 5 yes Figure 4 A schematic diagram of the locking mechanism 50 and chuck 42 in the locked state. Figure 5 As shown, when the snap-fit member 52 is in the first position, the snap-fit member 52 engages with the first mating part 421. Please refer to the following: Figure 6 , Figure 6 yes Figure 4 A schematic diagram of the locking mechanism 50 and the chuck 42 in the unlocked state. (See attached diagram.) Figure 6 As shown, when the snap-fit 52 is in the second position, the snap-fit 52 separates from the first mating part 421.
[0048] By setting a fixed base 51 and a snap-fit member 52, the fixed base 51 is installed on the second clamping plate 30, and the snap-fit member 52 is slidably connected to the fixed base 51. The snap-fit member 52 can slide relative to the fixed base 51 to a first position and snap-fit with the first mating part 421, and the snap-fit member 52 can slide relative to the fixed base 51 to a second position and separate from the first mating part 421, thereby realizing the switching of the locking mechanism 50 between the locked state and the unlocked state. Its structure is relatively simple and is conducive to reducing costs.
[0049] Specifically, the sliding direction of the locking member 52 relative to the fixed seat 51 is perpendicular to the length direction of the lead screw 41. In this embodiment, the locking member 52 is located on the top side of the chuck 42, and the locking member 52 can slide vertically relative to the fixed seat 51 to engage with the first mating part 421 on the top side of the chuck 42. In other embodiments, the locking member 52 may also be located on the horizontal side or the bottom side of the chuck 42.
[0050] In this embodiment, the fixing base 51 is fixed to the second clamping plate 30 by screws so as to realize the synchronous movement of the locking mechanism 50 and the second clamping plate 30.
[0051] In one embodiment of this implementation, please refer to Figure 2 and Figure 4The locking member 52 is provided with a second mating part 521. One of the first mating part 421 and the second mating part 521 is constructed as a groove, and the other is constructed as a locking block. When the locking member 52 is in the first position, the locking block and the groove engage to restrict the rotation of the lead screw 41. Specifically, the second mating part 521 is located at one end of the locking member 52 near the chuck 42 to facilitate engagement with the first mating part 421 of the chuck 42. By providing a second mating part 521 on the locking member 52, and by constructing one of the first mating part 421 and the second mating part 521 as a groove and the other as a locking block, the locking block can engage with the groove to restrict the rotation of the lead screw 41, and the locking block can separate from the groove to release the restriction on the rotation of the lead screw 41. The structure is relatively simple and helps to reduce costs.
[0052] In this embodiment, the first mating part 421 is constructed as a slot, and the second mating part 521 is constructed as a block, that is, multiple slots are formed on the outer peripheral surface of the chuck 42. Optionally, the multiple slots have the same depth and width, and the multiple slots are evenly distributed on the outer peripheral surface of the chuck 42.
[0053] In one embodiment of this implementation, please refer to Figure 5 The fixed base 51 has a shaft hole 511 and a limiting part 512. The snap-fit member 52 includes a connecting part 522 and a third mating part 523. The connecting part 522 is rotatably engaged with the shaft hole 511 and can move along the shaft hole 511. The second mating part 521 and the third mating part 523 are respectively provided at both ends of the connecting part 522. Please refer to the following: Figure 6 and Figure 7 , Figure 7 yes Figure 4 This is a schematic diagram of the locking mechanism 50 and chuck 42 in another unlocked state. When the latching member 52 is in the second position, the connecting portion 522 can rotate relative to the fixed base 51 by a preset angle so that the limiting portion 512 abuts against the third mating portion 523, thereby restricting the second mating portion 521 from sliding towards the first mating portion 421. For ease of description, the position of the latching member 52 when the limiting portion 512 abuts against the third mating portion 523 is defined as the third position. Figure 7 In the middle, the connector 52 is in the third position.
[0054] Specifically, in this embodiment, the preset angle is 90 degrees, meaning that the connecting part 522 can rotate 90 degrees relative to the fixed base 51 to switch from the second position to the third position. In other embodiments, the preset angle may also be other degrees.
[0055] By providing a shaft hole 511 on the fixed base 51, the connecting portion 522 of the snap-fit member 52 can move along the shaft hole 511 to switch between a first position and a second position, thereby achieving the switching between a locked state and an unlocked state. Furthermore, by providing a limiting portion 512 on the fixed base 51, after the connecting portion 522 of the snap-fit member 52 rotates in the shaft hole 511 to switch from the second position to the third position, the limiting portion 512 can abut against the third mating portion 523 of the snap-fit member 52 to restrict the second mating portion 521 from sliding towards the first mating portion 421, thereby maintaining the unlocked state, so that the worker can drive the lead screw 41 to move the second clamping plate 30.
[0056] In one embodiment of this implementation, please refer to Figure 5 The third mating part 523 protrudes from the outer peripheral surface of the connecting part 522. The limiting part 512 includes two protrusions spaced apart and forming a limiting groove 513 between them. When the latching member 52 is in the first position, the third mating part 523 is slidably disposed in the limiting groove 513. When the latching member 52 is in the third position, the end of the protrusion away from the chuck 42 abuts against the end of the third mating part 523 near the chuck 42. With this configuration, the limiting groove 513 can limit the latching member 52 circumferentially, and the latching member 52 can be better maintained in the first position to maintain the locked state. Specifically, the bottom wall of the third mating part 523 abuts against the limiting groove 513.
[0057] In one embodiment of this implementation, please refer to Figure 5 and Figure 7 The locking mechanism 50 includes an elastic element (not shown), which connects the latching member 52 and the fixing base 51. The elastic force applied by the elastic element to the latching member 52 is used to reset the latching member 52 to the first position. Specifically, the elastic element can be a spring, leaf spring, tension spring, or other similar device. The direction of the elastic force applied by the elastic element to the latching member 52 is towards the chuck 42. In this embodiment, the elastic force applied by the elastic element to the latching member 52 is downward in the vertical direction, so that the latching member 52 can be reset from the second position to the first position, and under the action of the elastic force, the latching member 52 can better abut against the protrusion in the third position, and the latching member 52 can be better held in the third position to maintain the unlocked state.
[0058] In one embodiment of this implementation, please refer to Figure 2 and Figure 5 The fixed base 51 has a mounting groove 514, and the second clamping plate 30 closes the opening of the mounting groove 514 to form a cavity, in which the chuck 42 is disposed. This arrangement facilitates the installation of the chuck 42, reduces the influence of the external environment on the chuck 42, and improves the reliability of the engagement between the chuck 42 and the locking member 52.
[0059] Specifically, in the extension direction of the lead screw 41, the size of the chuck 42 matches the size of the cavity, so that one side of the chuck 42 can abut against the second clamping plate 30, and the other side of the chuck 42 can abut against the bottom wall of the mounting groove 514, thereby enabling the chuck 42, the fixed seat 51, and the second clamping plate 30 to move synchronously under the drive of the lead screw 41.
[0060] In one embodiment of this implementation, please refer to Figure 2 and Figure 5 The locking mechanism 50 includes a handle 53, which is located at the end of the latching member 52 away from the chuck 42 and protrudes from the outside of the mounting base 51. Specifically, the handle 53 is used for the user to apply pulling force to slide the latching member 52 from a first position to a second position, and for the user to apply torque to rotate the latching member 52 from the second position to a third position. This arrangement is designed to improve the user experience.
[0061] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.
Claims
1. A clamping tool, characterized in that The utility model relates to a clamping device for workpiece, comprising: a base for carrying a workpiece; a first clamping plate mounted on the base; a second clamping plate movably mounted on the base, the first clamping plate and the second clamping plate being used for clamping the workpiece; a pressing mechanism comprising a screw rod, one end of the screw rod being connected with the second clamping plate, the screw rod being threadedly connected with the base, the screw rod being rotatable relative to the base to move the second clamping plate and change the distance between the first clamping plate and the second clamping plate; a locking mechanism having a locked state and an unlocked state, the locking mechanism preventing the screw rod from rotating when the locking mechanism is in the locked state, the screw rod being rotatable relative to the base when the locking mechanism is in the unlocked state; wherein the pressing mechanism comprises a chuck, the screw rod being fixedly connected with the chuck, the chuck comprising a plurality of first matching parts distributed circumferentially, the locking mechanism being engaged with the first matching parts to limit the rotation of the screw rod when the locking mechanism is in the locked state; wherein the locking mechanism is mounted on the second clamping plate, the locking mechanism, the chuck and the second clamping plate moving synchronously relative to the base when the screw rod rotates relative to the base; wherein the locking mechanism comprises a fixed seat and a clamping piece, the fixed seat being fixed to the second clamping plate, the clamping piece being slidably connected with the fixed seat, the clamping piece being slidable relative to the fixed seat to switch between a first position and a second position; the clamping piece being provided with a second matching part, one of the first matching part and the second matching part being a clamping groove and the other being a clamping block, the clamping block and the clamping groove being engaged to limit the rotation of the screw rod when the clamping piece is in the first position, the first matching part and the second matching part being separated from each other when the clamping piece is in the second position; wherein the fixed seat is provided with an axle hole and a limiting part, the clamping piece comprising a connecting part and a third matching part, the connecting part being rotatably matched with the axle hole and being movable along the axle hole, the second matching part and the third matching part being respectively arranged at two ends of the connecting part; the clamping piece being further rotatable relative to the fixed seat to switch between the second position and a third position, the limiting part being in abutment with the third matching part to limit the second matching part from sliding towards the first matching part when the clamping piece is in the third position.
2. The clamping tool of claim 1, wherein the third matching part being protruded relative to the outer circumferential surface of the connecting part, the limiting part comprising two protrusions, the two protrusions being spaced apart and forming a limiting groove therebetween, the third matching part being slidably arranged in the limiting groove when the clamping piece is in the first position, the protrusions being in abutment with the third matching part close to the chuck when the clamping piece is in the third position.
3. The clamping tool of claim 1, wherein the locking mechanism comprising an elastic member, the elastic member connecting the clamping piece and the fixed seat, the elastic force applied by the elastic member to the clamping piece being used to reset the clamping piece to the first position.
4. The clamping tool of claim 1, wherein The fixing base is provided with a mounting groove, the second clamping plate closes the opening of the mounting groove to form a cavity, and the chuck is arranged in the cavity.
5. The clamping tool of claim 1, wherein The locking mechanism comprises a handle, which is arranged at the end of the clamping piece away from the chuck and exposed outside the fixing base.
6. The clamping tool of claim 1, wherein The base comprises a fixing plate fixed relative to the first clamping plate, the second clamping plate is located between the first clamping plate and the fixing plate, the fixing plate is provided with a guide hole and a threaded hole, the pressing mechanism comprises a guide rod connected with the second clamping plate, the guide rod is in sliding fit with the guide hole, and the lead screw is in threaded fit with the threaded hole.