Positioning mechanism and channeling device

Abstract

The utility model relates to a positioning mechanism and a channeling device. The positioning mechanism comprises a mounting seat which can be controlled to move along a first direction; the supporting block is arranged on the mounting seat and is used for supporting a workpiece; the positioning block is arranged on the mounting seat and is used for positioning the workpiece; the positioning block can move relative to the mounting seat along a second direction intersected with the first direction so as to be close to or away from the workpiece; the guide piece is arranged on one side, deviating from the workpiece, of the positioning block; the elastic piece is connected between the positioning block and the mounting seat, and the elastic piece is used for providing pre-tightening force for enabling the positioning block to abut against the guide piece; when the mounting base drives the positioning block to move in the first direction, the positioning block can move in the second direction under the guiding effect of the guiding piece so as to be separated from or make contact with the workpiece.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing equipment, in particular to a positioning mechanism and a groove rolling device. Background Art

[0002] In the production process of cylindrical batteries, it is necessary to use a groove rolling mechanism to roll grooves on the cylindrical batteries to form an annular groove on the outer wall of the cylindrical battery. Traditionally, the cylindrical battery is positioned using a positioning block, and then the upper and lower pressure heads are used to press the upper and lower ends of the cylindrical battery respectively. The upper pressure head rotates to drive the cylindrical battery to rotate, and the cylindrical battery is grooved using a roller during the rotation of the cylindrical battery. However, when the upper pressure head drives the cylindrical battery to rotate and roll grooves, the cylindrical battery is easily scratched by the positioning block, which greatly increases the defective rate of the product. Utility Model Content

[0003] Based on this, it is necessary to provide a positioning mechanism and grooving device to improve the above defects, in order to address the problem in the prior art that when the upper pressure head drives the cylindrical battery to rotate and perform grooving processing, the cylindrical battery is easily scratched by the positioning block, which greatly increases the defective rate of the product.

[0004] A positioning mechanism, comprising:

[0005] A mounting seat, movable in a controllable manner along a first direction;

[0006] A support block, arranged on the mounting seat, for supporting a workpiece;

[0007] A positioning block is arranged on the mounting seat and is used to position the workpiece; the positioning block is movable relative to the mounting seat along a second direction intersecting with the first direction so as to approach or move away from the workpiece;

[0008] a guide member, arranged on a side of the positioning block away from the workpiece; and

[0009] an elastic member connected between the positioning block and the mounting seat, the elastic member being used to provide a pre-tightening force that causes the positioning block to press against the guide member;

[0010] When the mounting seat drives the positioning block to move along the first direction, under the guiding action of the guide member, the positioning block can be displaced in the second direction to separate from or contact the workpiece.

[0011] In one embodiment, the positioning mechanism also includes a roller mounted on the positioning block, and the roller and the guide member are in rolling cooperation, so that when the mounting seat drives the positioning block to move along the first direction, under the guiding action of the guide member, the roller drives the positioning block to separate from or contact the workpiece.

[0012] In one embodiment, the surface of the guide member and the roller rollingly cooperates includes a plane segment and an inclined segment arranged along the first direction, the plane segment is parallel to the first direction, and the distance between the inclined segment and the positioning block in the second direction gradually increases from one end close to the plane segment to the end far away from the plane segment.

[0013] In one embodiment, the mounting seat moves along the first direction through a first position and a second position; when the mounting seat is located at the first position, the roller abuts against the plane section; when the mounting seat is located at the second position, the roller abuts against the inclined section.

[0014] In one embodiment, the planar segment and the inclined segment transition into a circular arc.

[0015] In one of the embodiments, a magnetic attraction member is disposed on the positioning block, and the magnetic attraction member is used to adsorb the workpiece onto the positioning block.

[0016] In one of the embodiments, the positioning block is provided with an adsorption hole, which is connected to an external negative pressure source and is used to adsorb the workpiece onto the positioning block.

[0017] A groove rolling device, comprising a groove rolling mechanism, a clamping mechanism and a positioning mechanism as described in any of the above embodiments;

[0018] The clamping mechanism comprises a rotating pressing head which is opposite to the support block in the first direction, the rotating pressing head and the support block are rotatable around the same rotation axis, the mounting seat can drive the support block to move close to the rotating pressing head along the first direction, so that the rotating pressing head and the support block can press the workpiece together, and the positioning block is separated from the workpiece under the guiding action of the guide member;

[0019] The groove rolling mechanism is used to perform groove rolling processing on the workpiece that rotates following the rotary pressure head.

[0020] In one embodiment, the groove rolling device further comprises a rotating mechanism and a rotating seat mounted on the rotating mechanism, the rotating mechanism drives the rotating seat to rotate around a first rotation axis, the groove rolling mechanism and the pressing mechanism are both arranged on the rotating seat, the mounting seat is movably connected to the rotating seat along the first direction, and the guide member is mounted on the rotating seat;

[0021] The groove rolling device also includes a guiding mechanism, which has a first guiding cam. A first follower wheel is installed on the mounting seat, and the first follower wheel and the first guide cam are in rolling cooperation. In the process of the rotating mechanism driving the rotating seat to rotate around the first rotating axis, the first follower wheel drives the mounting seat to move along the first direction under the guiding action of the first guide cam.

[0022] In one embodiment, the guide mechanism has a second guide cam, and the clamping mechanism is equipped with a second follower wheel, and the second follower wheel and the second guide cam are rollingly matched; when the rotating mechanism drives the rotating seat to rotate around the first rotating axis, the second follower wheel drives the clamping mechanism to move along the first direction under the guidance of the second guide cam.

[0023] When the above-mentioned positioning mechanism and grooving device are actually used, the workpiece is first loaded onto the support block, and the positioning block is used to position the workpiece on the support block. Then, the mounting seat moves along the first direction until the workpiece on the support block is pressed by the clamping mechanism. At this time, the positioning block is displaced in the second direction under the guidance of the guide member (the elongation of the elastic member is reduced at this time), so that the positioning block is separated from the workpiece on the support block. Then, the clamping mechanism drives the workpiece to rotate around its own axis, and at the same time, the grooving mechanism performs grooving processing on the workpiece. After the grooving processing is completed, the mounting seat moves along the first direction, and at this time, the positioning block is displaced in the second direction under the action of the guide member (the elongation of the elastic member is increased at this time), so that the positioning block contacts the workpiece and positions the workpiece again. At the same time, the workpiece follows the support block to move away from the clamping mechanism along the first direction until it returns to the initial position.

[0024] In this way, before the clamping mechanism drives the workpiece to rotate, the positioning block has been separated from the workpiece under the guiding action of the guide member, so that the positioning block will not scratch the workpiece when the workpiece rotates around its own axis, greatly improving the product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of a groove rolling device in one embodiment of the utility model;

[0026] Figure 2 for Figure 1 The structural schematic diagram of the positioning mechanism, the pressing mechanism and the groove rolling mechanism of the groove rolling device shown;

[0027] Figure 3 for Figure 1 A schematic structural diagram of a positioning mechanism of a groove rolling device shown;

[0028] Figure 4 for Figure 3 A schematic structural diagram of a guide member of the positioning mechanism shown;

[0029] Figure 5 for Figure 3 A schematic structural diagram of the positioning block of the positioning mechanism shown. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0036] See also Figure 1 and Figure 2 An embodiment of the utility model provides a groove rolling device for performing groove rolling processing on a workpiece A. The groove rolling device includes a positioning mechanism 10, a clamping mechanism 20 and a groove rolling mechanism 30. The positioning mechanism 10 is used to load the workpiece A and position the workpiece A. The clamping mechanism 20 is used to clamp the workpiece A together with the positioning mechanism 10 and drive the workpiece A to rotate around its own axis. The groove rolling mechanism 30 is used to perform groove rolling processing on the workpiece A clamped between the clamping mechanism 20 and the positioning mechanism 10.

[0037] See also Figure 3 In an embodiment of the present application, the positioning mechanism 10 includes a mounting seat 12, a support block 13, a positioning block 14, a guide member 15 and an elastic member 16. The mounting seat 12 can be controlled to move along a first direction X1. The support block 13 is arranged on the mounting seat 12, and the support block 13 is used to support the workpiece A. The positioning block 14 is arranged on the mounting seat 12, and the positioning block 14 is used to position the workpiece A. The positioning block 14 is movable relative to the mounting seat 12 along a second direction X2 intersecting with the first direction X1 to approach or move away from the workpiece A on the support block 13. Preferably, the first direction X1 is perpendicular to the second direction X2.

[0038] The guide member 15 is arranged on the side of the positioning block 14 away from the workpiece A, that is, the guide member 15, the positioning block 14 and the workpiece A on the support block 13 are arranged along the second direction X2. The elastic member 16 is connected between the positioning block 14 and the mounting seat 12. The elastic member 16 is used to provide a pre-tightening force that causes the positioning block 14 to press against the guide member 15. When the mounting seat 12 drives the positioning block 14 to move along the first direction X1, under the guiding action of the guide member 15, the positioning block 14 can generate a certain displacement in the second direction X2 to separate from or contact the workpiece A. Optionally, the elastic member 16 can be a spring.

[0039] When the groove rolling device is actually used, the workpiece A is first loaded onto the support block 13, and the workpiece A on the support block 13 is positioned by the positioning block 14. Then, the mounting seat 12 moves along the first direction X1 (i.e., Figure 1 ) until the workpiece A on the support block 13 is pressed by the clamping mechanism 20. At this time, the positioning block 14 is displaced in the second direction X2 under the guidance of the guide member 15 (the elongation of the elastic member 16 is reduced at this time), so that the positioning block 14 is separated from the workpiece A on the support block 13. Then, the clamping mechanism 20 drives the workpiece A to rotate around its own axis, and at the same time, the groove rolling mechanism 30 performs groove rolling on the workpiece A. After the groove rolling is completed, the mounting seat 12 moves along the first direction X1 (i.e., as shown in FIG. 1 ). Figure 1 ), at this time, the positioning block 14 is displaced in the second direction X2 under the action of the guide member 15 (at this time, the elongation of the elastic member 16 increases), so that the positioning block 14 contacts the workpiece A and positions the workpiece A again. At the same time, the workpiece A follows the support block 13 to move away from the clamping mechanism 20 in the first direction X1 until it returns to the initial position.

[0040] In this way, before the clamping mechanism 20 drives the workpiece A to rotate, the positioning block 14 has been separated from the workpiece A under the guiding action of the guide member 15, so that the positioning block 14 will not scratch the workpiece A when the workpiece A rotates around its own axis, greatly improving the product yield.

[0041] It should be noted that the workpiece A in this article may be a battery, which is loaded in a support cup, and the support cup is supported on a support block 13. Of course, in other embodiments, the workpiece A may also be other products that need to be grooved, which is not limited here.

[0042] In the embodiment of the present application, the positioning mechanism 10 further includes a roller 17 mounted on the positioning block 14, and the roller 17 is in rolling cooperation with the guide member 15, so that when the mounting seat 12 drives the positioning block 14 to move along the first direction X1, the roller 17 drives the positioning block 14 to separate from or contact the workpiece A under the guiding action of the guide member 15. In this way, under the action of the preload force provided by the elastic member 16, the roller 17 on the positioning block 14 always abuts against the guide member 15, so that when the mounting seat 12 moves along the first direction X1, the roller 17 can be driven to roll along the guide member 15, so that the guide member 15 can guide the roller 17 and the positioning block 14, and then under the guiding action of the guide member 15, the roller 17 drives the positioning block 14 to move closer to or away from the workpiece A along the second direction X2, thereby achieving the separation or contact of the positioning block 14 with the workpiece A.

[0043] It should be noted that the setting of the roller 17 converts sliding friction into rolling friction, making the relative movement of the positioning block 14 and the guide member 15 smoother and more accurate, ensuring that the separation or contact action of the positioning block 14 and the workpiece A is more accurate and reliable.

[0044] Please also see Figures 2 to 4 Furthermore, the surface of the guide member 15 and the roller 17 rolling cooperation includes a plane section 151 arranged along the first direction X1 (see Figure 4 ) and the sloped surface section 152 (see Figure 4 ). The plane section 151 is parallel to the first direction X1, and the distance between the inclined section 152 and the positioning block 14 in the second direction X2 gradually increases from the end close to the plane section 151 to the end away from the plane section 151. In this way, the mounting seat 12 drives the workpiece A on the support block 13 to move close to the clamping mechanism 20 along the first direction X1, and also drives the roller 17 on the positioning block 14 to roll from the plane section 151 to the inclined section 152. When the workpiece A on the support block 13 is clamped by the clamping mechanism 20, the roller 17 on the positioning block 14 rolls from the plane section 151 to the inclined section 152. Under the guidance of the inclined section 152, the roller 17 drives the positioning block 14 to move a certain distance away from the workpiece A along the second direction X2, so that the positioning block 14 is separated from the workpiece A, thereby avoiding being scratched by the positioning block 14 during subsequent rotation of the workpiece A.

[0045] It should be noted that the size of the inclination angle of the inclined surface section 152 relative to the first direction X1 determines the distance that the positioning block 14 moves away from the workpiece A. The larger the inclination angle of the inclined surface section 152 relative to the first direction X1, the larger the distance that the positioning block 14 moves away from the workpiece A; the smaller the inclination angle of the inclined surface section 152 relative to the first direction X1, the smaller the distance that the positioning block 14 moves away from the workpiece A. Therefore, the inclination angle of the inclined surface section 152 can be set according to actual needs to ensure that the positioning block 14 maintains a sufficient safety distance from the workpiece A during the groove rolling process, and is not limited here.

[0046] Furthermore, an arc transition is adopted between the plane section 151 and the inclined section 152, so that the roller 17 can roll more smoothly between the plane section 151 and the inclined section 152, thereby ensuring that the contact or separation action between the positioning block 14 and the workpiece A is more accurate and reliable.

[0047] Furthermore, the mounting seat 12 can pass through the first position and the second position during the movement along the first direction X1. When the mounting seat 12 is at the first position, the roller 17 abuts against the plane section 151 on the guide member 15, and the positioning block 14 contacts the workpiece A on the support block 13 and positions the workpiece A. When the mounting seat 12 is at the second position, the roller 17 abuts against the inclined section 152 on the guide member 15, and the positioning block 14 is separated from the workpiece A on the support block 13, and the workpiece A on the support block 13 is pressed between the support block 13 and the clamping mechanism 20.

[0048] See also Figure 5 As shown, in the embodiment of the present application, a positioning groove 141 is provided on the positioning block 14, and the positioning groove 141 is used to accommodate the workpiece A, so that the position of the workpiece A is limited by the positioning groove 141, that is, the workpiece A is positioned. It should be noted that the shape of the positioning groove 141 matches the outer contour shape of the workpiece A, so that part of the workpiece A can be accommodated in the positioning groove 141.

[0049] In some embodiments, the positioning block 14 is provided with a magnetic member, which is used to absorb the workpiece A into the positioning groove 141 of the positioning block 14, so as to achieve positioning of the workpiece A. Optionally, the magnetic member can be a magnet or an electromagnet.

[0050] It should be noted that the method is not limited to using a magnetic suction member to adsorb the workpiece A into the positioning groove 141 of the positioning block 14. In other embodiments, the workpiece A may be adsorbed into the positioning groove 141 of the positioning block 14 by vacuum adsorption. Specifically, the positioning block 14 is provided with an adsorption hole, which is connected to an external negative pressure source and is used to adsorb the workpiece A onto the positioning block 14.

[0051] It should also be noted that in some other embodiments, the workpiece A can be clamped in the positioning groove 141 of the positioning block 14 by clamping. Specifically, a common clamping structure in the prior art can be adopted, so it will not be described in detail here.

[0052] See also Figure 1 and Figure 2As shown, in the embodiment of the present application, the clamping mechanism 20 has a rotating pressure head 21 opposite to the support block 13 in the first direction X1. The rotating pressure head 21 and the support block 13 can rotate around the same rotation axis. The mounting seat 12 can drive the support block 13 to move along the first direction X1 close to the rotating pressure head 21, so that the rotating pressure head 21 and the support block 13 can press the workpiece A together, and the positioning block 14 is separated from the workpiece A under the guidance of the guide member 15.

[0053] Furthermore, the pressing mechanism 20 also has a pressing head cover 22 sleeved on the outside of the rotating pressing head 21. The rotating pressing head 21 can be retracted into the pressing head cover 22 under the action of external force.

[0054] In actual use, first, the workpiece A is loaded onto the support block 13, and the positioning block 14 is used to position the workpiece A on the support block 13. Then, the mounting seat 12 is controlled to move toward the clamping mechanism 20, thereby driving the support block 13 and the workpiece A thereon to move toward the rotating pressure head 21 of the clamping mechanism 20. After the rotating pressure head 21 contacts the workpiece A, the mounting seat 12 continues to drive the support block 13 and the workpiece A on the support block 13 to move toward the rotating pressure head 21 for a certain distance, and the rotating pressure head 21 retracts into the pressure head sleeve 22 under the pushing action of the workpiece A, so that part of the workpiece A also enters the pressure head sleeve 22, until the rotating pressure head 21 and the support block 13 jointly press the workpiece A. In this process, the roller 17 rolls from the plane section 151 of the guide member 15 to the inclined section 152, and rolls a certain distance along the inclined section 152, so that under the guiding action of the inclined section 152, the roller 17 drives the positioning block 14 to move away from the workpiece A along the second direction X2 and separates from the workpiece A. Then, the rotary ram 21 is controlled to rotate, thereby driving the workpiece A and the support block 13 to rotate around their own axes. Then, the groove rolling mechanism 30 is used to perform groove rolling processing on the workpiece A.

[0055] After the groove rolling process is completed, the mounting seat 12 drives the support block 13 to move away from the rotating pressure head 21, so that the workpiece A on the support block 13 exits the pressure head sleeve 22. At the same time, driven by the mounting seat 12, the roller 17 on the positioning block 14 rolls from the inclined section 152 to the plane section 151, so that under the guidance of the inclined section 152, the roller 17 drives the positioning block 14 to move close to the workpiece A in the second direction X2 until the workpiece A enters the positioning groove 141 of the positioning block 14 (at this time, the workpiece A is positioned in the positioning groove 141 of the positioning block 14). As the mounting seat 12 continues to move away from the rotating pressure head 21, the workpiece A is separated from the rotating pressure head 21, and the roller 17 rolls along the plane section 151 of the guide member 15. At this time, the positioning block 14 does not generate displacement in the second direction X2, ensuring that the positioning block 14 positions the workpiece A.

[0056] Specifically in the embodiment, the groove rolling device further includes a rotating mechanism 50 and a rotating seat 40 mounted on the rotating mechanism 50. The rotating mechanism 50 drives the rotating seat 40 to rotate around a first rotation axis, and the first rotation axis is parallel to the first direction X1. The groove rolling mechanism 30 and the clamping mechanism 20 are both arranged on the rotating seat 40. The mounting seat 12 is movably connected to the rotating seat 40 along the first direction X1, and the guide member 15 is fixedly mounted on the rotating seat 40.

[0057] The groove rolling device also includes a guide mechanism (not shown), which has a first guide cam 61. A first follower wheel 11 is mounted on the mounting seat 12, and the first follower wheel 11 and the first guide cam 61 are in rolling cooperation. When the rotating mechanism 50 drives the rotating seat 40 to rotate around the first rotating axis, the first follower wheel 11 drives the mounting seat 12 to move along the first direction X1 under the guidance of the first guide cam 61. In this way, the rotating seat 40 is driven to rotate around the first rotating axis by the rotating mechanism 50, so that the first follower wheel 11 rolls along the first guide cam 61, and the first follower wheel 11 drives the mounting seat 12 to move in one direction under the guidance of the first guide cam 61, that is, the movement of the mounting seat 12 in the first direction X1 is realized.

[0058] Furthermore, the guide mechanism also has a second guide cam 62, and a second follower wheel 23 is installed on the clamping mechanism 20, and the second follower wheel 23 rolls with the second guide cam 62. When the rotating mechanism 50 drives the rotating seat 40 to rotate around the first rotating axis, the second follower wheel 23 drives the clamping mechanism 20 to move along the first direction X1 under the guidance of the second guide cam 62. In this way, the rotating mechanism 50 is used to drive the rotating seat 40 to rotate around the first rotating axis, so that the second follower wheel 23 rolls along the second guide cam 62, and then under the guidance of the second guide cam 62, the second follower wheel 23 drives the clamping mechanism 20 to move along the first direction X1, so that the mounting seat 12 drives the workpiece A on the support block 13 to move toward the rotating pressure head 21 of the clamping mechanism 20, while the second follower wheel 23 also drives the rotating pressure head 21 and the pressure head cover 22 of the clamping mechanism 20 to move toward the workpiece A, until part of the workpiece A enters the pressure head cover 22, and the workpiece A is clamped by the rotating pressure head 21 and the support block 13.

[0059] It should be noted that the specific structures of the clamping mechanism 20 and the groove rolling mechanism 30 can adopt relatively mature existing technologies, so they are not described in detail here.

[0060] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A positioning mechanism, characterized in that: include: A mounting seat, movable in a controllable manner along a first direction; A support block, arranged on the mounting seat, for supporting a workpiece; A positioning block is arranged on the mounting seat and is used to position the workpiece; the positioning block is movable relative to the mounting seat along a second direction intersecting with the first direction so as to approach or move away from the workpiece; a guide member, arranged on a side of the positioning block away from the workpiece; and an elastic member connected between the positioning block and the mounting seat, the elastic member being used to provide a pre-tightening force that causes the positioning block to press against the guide member; When the mounting seat drives the positioning block to move along the first direction, under the guiding action of the guide member, the positioning block can be displaced in the second direction to separate from or contact the workpiece.

2. The positioning mechanism according to claim 1, characterized in that: The positioning mechanism also includes a roller installed on the positioning block, and the roller and the guide member are rollingly matched, so that when the mounting seat drives the positioning block to move along the first direction, under the guiding action of the guide member, the roller drives the positioning block to separate from or contact the workpiece.

3. The positioning mechanism according to claim 2, characterized in that: The surface of the guide member and the roller rollingly cooperates includes a plane section and an inclined section arranged along the first direction, the plane section is parallel to the first direction, and the distance between the inclined section and the positioning block in the second direction gradually increases from one end close to the plane section to the end away from the plane section.

4. The positioning mechanism according to claim 3, characterized in that: The mounting seat moves along the first direction through a first position and a second position; when the mounting seat is located at the first position, the roller abuts against the plane section; when the mounting seat is located at the second position, the roller abuts against the inclined section.

5. The positioning mechanism according to claim 3, characterized in that: The plane segment and the slope segment transition into a circular arc.

6. The positioning mechanism according to any one of claims 1 to 5, characterized in that: The positioning block is provided with a magnetic attraction member, and the magnetic attraction member is used to adsorb the workpiece onto the positioning block.

7. The positioning mechanism according to any one of claims 1 to 5, characterized in that: The positioning block is provided with an adsorption hole, which is connected to an external negative pressure source and is used for adsorbing the workpiece on the positioning block.

8. A groove rolling device, characterized in that: It comprises a groove rolling mechanism, a clamping mechanism and a positioning mechanism as claimed in any one of claims 1 to 5; The clamping mechanism comprises a rotating pressing head which is opposite to the support block in the first direction, the rotating pressing head and the support block are rotatable around the same rotation axis, the mounting seat can drive the support block to move close to the rotating pressing head along the first direction, so that the rotating pressing head and the support block can press the workpiece together, and the positioning block is separated from the workpiece under the guiding action of the guide member; The groove rolling mechanism is used to perform groove rolling processing on the workpiece that rotates following the rotary pressure head.

9. The groove rolling device according to claim 8, characterized in that: The groove rolling device also includes a rotating mechanism and a rotating seat mounted on the rotating mechanism, the rotating mechanism drives the rotating seat to rotate around a first rotating axis, the groove rolling mechanism and the pressing mechanism are both arranged on the rotating seat, the mounting seat is movably connected to the rotating seat along the first direction, and the guide member is mounted on the rotating seat; The groove rolling device also includes a guiding mechanism, which has a first guiding cam. A first follower wheel is installed on the mounting seat, and the first follower wheel and the first guide cam are in rolling cooperation. In the process of the rotating mechanism driving the rotating seat to rotate around the first rotating axis, the first follower wheel drives the mounting seat to move along the first direction under the guiding action of the first guide cam.

10. The groove rolling device according to claim 9, characterized in that: The guide mechanism has a second guide cam, and the clamping mechanism is equipped with a second follower wheel, which rolls with the second guide cam; in the process of the rotating mechanism driving the rotating seat to rotate around the first rotating axis, the second follower wheel drives the clamping mechanism to move along the first direction under the guidance of the second guide cam.

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