Positioning device, work plate and laser processing equipment

Abstract

The present application discloses a positioning device, a work plate and a laser processing device. The positioning device is applied to laser processing, and the positioning device includes: a positioning component, a fixing component and a connecting component. The positioning component is used to position the workpiece for laser processing; the fixing component is used to fix with the work plate on which the workpiece is placed; the connecting component connects the positioning component and the fixing component respectively to fix the positioning component on the work plate. The technical solution of the present application can reduce the relative movement of the workpiece and the work plate, and reduce the deviation of the processing of the workpiece.

Description

Technical Field

[0001] The present application belongs to the field of laser processing technology, and specifically relates to a positioning device, a work plate and laser processing equipment. Background Art

[0002] Laser is the light emitted by atoms under stimulation. The main principle of laser emission is that when the electrons in atoms absorb energy and jump from low energy level to high energy level, and then fall back from high energy level to low energy level, the released energy is released in the form of photons. The energy density of laser is high, so it can be used for engraving.

[0003] When a workpiece is processed by laser, the laser beam is irradiated onto the surface of the workpiece, and the material of the workpiece is vaporized to obtain the desired shape or pattern. During the processing, the workpiece is placed on the work plate, but the workpiece and the work plate are prone to relative movement during the processing, resulting in deviations in the processing of the workpiece, and may even cause the workpiece to be scrapped. Utility Model Content

[0004] The purpose of the present application is to provide a positioning device, a work plate and a laser processing device, which can reduce the relative movement of the workpiece and the work plate and reduce the deviation in the processing of the workpiece.

[0005] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0006] According to one aspect of an embodiment of the present application, the present application provides a positioning device, which is applied to laser processing, and the positioning device includes:

[0007] A positioning component, the positioning component is used to position a workpiece for laser processing;

[0008] A fixing assembly, the fixing assembly being used to be fixed to a work plate on which a workpiece is placed;

[0009] A connecting component is used to connect the positioning component and the fixing component respectively so as to fix the positioning component on the working board.

[0010] In one aspect, the connection assembly includes a positioning post, the positioning assembly is rotatably connected to the positioning post, and the positioning assembly rotates around the positioning post in a plane parallel to the upper surface of the work plate.

[0011] In one aspect, the connection assembly further includes a connection rod, the connection rod is passed through the positioning column and is movably arranged in the axial direction of the positioning column, the top end of the connection rod is provided with a first connection hole, the positioning assembly is provided with a second connection hole, and the second connection hole is arranged corresponding to the first connection hole;

[0012] The connecting assembly also includes a fastener, which is sequentially inserted into the second connecting hole and the first connecting hole and connected to the connecting rod.

[0013] In one aspect, the connecting assembly further includes a first elastic member, which is disposed between the connecting rod and the positioning column, wherein one end of the first elastic member is connected to the connecting rod, and the other end of the first elastic member is connected to the positioning column.

[0014] In one aspect, the positioning device further comprises a pressing assembly, wherein the pressing assembly comprises a side pressing plate, and the side pressing plate is elastically connected to a side edge of the connecting assembly.

[0015] In one aspect, the pressing assembly further includes a guide post and a second elastic member;

[0016] At least one guide post is provided, and the guide post is passed through the pressing assembly and connected to the side pressing plate;

[0017] The second elastic member is sleeved on the guide column, one end of the second elastic member is connected to the guide column, and the other end is connected to the pressing assembly.

[0018] In one aspect, the fixing assembly includes a fixing rod, the fixing rod is passed through the connecting assembly and is movably arranged up and down on the connecting assembly, and the lower end of the fixing rod is used to abut against and fix the working plate.

[0019] In one aspect, the connecting assembly further comprises a connecting seat and a fixing column, the positioning assembly and the fixing assembly are respectively connected to the connecting seat, two fixing columns are provided, the two fixing columns are arranged on the lower surface of the connecting seat, and the fixing columns are used to position on the working board.

[0020] In one aspect, the fixing assembly includes a fixing rod, the connecting assembly includes a connecting seat, the fixing rod is passed through the connecting seat and is movably arranged up and down on the connecting seat;

[0021] The positioning assembly is arranged at one side of the connecting seat, and the fixing assembly further comprises a fixing column, two fixing columns are arranged at intervals on the lower surface of the connecting seat, and are arranged sequentially in a direction away from the positioning assembly.

[0022] In addition, in order to solve the above-mentioned problem, the present application also provides a work board, on which the positioning device as described above is installed, and the work board is formed with a slide groove, and the connecting component part structure is arranged in the slide groove.

[0023] In one aspect, two positioning devices are provided, each positioning device includes a pressing assembly, the pressing assemblies of the two positioning devices are arranged opposite to each other, and the pressing assemblies are used to position the workpiece on the working plate.

[0024] In addition, in order to solve the above problems, the present application also provides a laser processing equipment, which includes a working plate, a laser and a positioning device as described above, wherein the positioning device is installed on the working plate, and the laser outlet of the laser faces the working plate.

[0025] In the present application, the fixing component and the positioning component are connected together by a connecting component. The fixing component is used to connect and fix to the working board, and the positioning component is used to press the workpiece to be processed. Through the fixation of the fixing component, the positioning component is relatively fixed to the working board. Then, the positioning component positions the workpiece, thereby reducing the relative movement of the workpiece and the working board, and reducing the deviation of the laser processing of the workpiece.

[0026] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 The schematic diagram shows the structure of the positioning device of the first embodiment of the present application positioned on the working board.

[0029] Figure 2 The side structural diagram of the positioning device of the first embodiment of the present application being positioned on the working board is schematically shown.

[0030] Figure 3 The present application is schematically shown Figure 1 Schematic diagram of the structure of the positioning device.

[0031] Figure 4 The present application is schematically shown Figure 3 Schematic diagram of the exploded structure of the positioning device.

[0032] Figure 5 The present application is schematically shown Figure 4 Schematic diagram of the structure of the lower surface of the positioning component and the upper surface of the connecting component in the positioning device.

[0033] Figure 6 The schematic diagram shows the structure of the positioning device positioned on the working board in the second embodiment of the present application.

[0034] Figure 7 A schematic diagram of the side structure of the positioning device in the second embodiment of the present application is shown.

[0035] Figure 8 The present application is schematically shown Figure 7 Schematic diagram of the structure of the positioning device.

[0036] Fig. 9 The present application is schematically shown Figure 8 Schematic diagram of the exploded structure of the positioning device.

[0037] Fig.10 The schematic diagram shows the structure of the positioning device positioned on the working board in the third embodiment of the present application.

[0038] Fig.11 A schematic diagram of the side structure of the positioning device in the third embodiment of the present application is shown schematically.

[0039] Fig.12 The present application is schematically shown Fig.11 Schematic diagram of the exploded structure of the positioning device.

[0040] The following are the descriptions of the reference numerals:

[0041] 10. Positioning device; 20. Working board;

[0042] 110, positioning assembly; 120, fixing assembly; 130, connecting assembly; 140, pressing assembly; 210, slide groove;

[0043] 111, lower pressing plate; 121, fixing rod; 122, fixing column; 123, positioning part; 131, positioning column; 132, connecting rod; 133, fastener; 134, first elastic member; 135, connecting seat; 136, first clamping plate; 137, second clamping plate; 138, third elastic member; 139, rubbing axis;

[0044] 141. side pressure plate; 142. guide column; 143. second elastic member; 144. resistance increasing layer; 1211. resistance part; 1212. adjustment part; 1321. first connecting hole; 1351. positioning protrusion; 1101. second connecting hole; 1102. positioning hole. DETAILED DESCRIPTION

[0045] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.

[0046] See also Figures 1 to 4 As shown, the present application provides a positioning device 10 , which is applied to laser processing. The positioning device 10 includes: a positioning component 110 , a fixing component 120 and a connecting component 130 .

[0047] The positioning assembly 110 is used to position the workpiece to be processed by laser. The workpiece to be processed can be a flexible material or a hard material. The positioning assembly 110 can fix the workpiece on the work plate 20 by pressing. For example, the positioning assembly 110 can be a plate-like structure, and the lower surface of the positioning assembly 110 is a plane, which increases the pressing area with the workpiece. After the workpiece is placed on the work plate 20, the workpiece can be pressed on the work plate 20.

[0048] The fixing assembly 120 is used to be fixed to the working board 20 on which the workpiece is placed; the fixing assembly 120 can be fixed to the working board 20 by pressing or embedding.

[0049] The connecting component 130 connects the positioning component 110 and the fixing component 120 respectively to fix the positioning component 110 on the working board 20. The positioning component 110 and the fixing component 120 are fixed together by the connecting function of the connecting component 130, and the positioning component 110 can be fixed on the working board 20 by the fixing function of the fixing component 120.

[0050] In this embodiment, the fixing assembly 120 and the positioning assembly 110 are connected together by the connecting assembly 130. The fixing assembly 120 is used to connect and fix to the working board 20, and the positioning assembly 110 is used to press the workpiece to be processed. Through the fixing of the fixing assembly 120, the positioning assembly 110 is relatively fixed to the working board 20. Then, the positioning assembly 110 positions the workpiece, thereby reducing the relative movement of the workpiece and the working board 20, and reducing the deviation of the laser processing on the workpiece.

[0051] In one embodiment of the present application, the connecting assembly 130 includes a positioning column 131, the positioning assembly 110 is rotatably connected to the positioning column 131, and the positioning assembly 110 rotates around the positioning column 131 in a plane parallel to the upper surface of the working plate 20. The positioning assembly 110 can be arranged at one end of the connecting assembly 130, and the rotation of the positioning assembly 110 around the positioning column 131 can rotate in multiple directions, thereby achieving various pressing and fixing requirements with the workpiece.

[0052] The positioning assembly 110 can rotate to any angle around the positioning column 131. Further, the positioning assembly 110 can rotate within the range of 0°-180°, for example, the positioning assembly 110 can rotate at an angle of 0°, 30°, 60°, 90°, 120°, 150° or 180°. The angle of rotation can refer to the angle between the positioning assembly 110 and the connecting assembly 130. For example, the positioning assembly 110 includes a lower pressing plate 111, and an angle between the side edge of the lower pressing plate 111 and the side surface of the connecting assembly 130.

[0053] In one embodiment of the present application, in order to fix the connection assembly 130 and the positioning assembly 110 together, the connection assembly 130 further includes a connection rod 132, the connection rod 132 is inserted through the positioning column 131, and is movably arranged in the axial direction of the positioning column 131, the top of the connection rod 132 is provided with a first connection hole 1321, the positioning assembly 110 is provided with a second connection hole 1101, and the second connection hole 1101 is arranged corresponding to the first connection hole 1321; the connection assembly 130 further includes a fastener 133, the fastener 133 is sequentially inserted through the second connection hole 1101 and the first connection hole 1321, and is connected to the connection rod 132. The top of the connection rod 132 is fixed to the positioning assembly 110 by the fastener 133. The first connection hole 1321 and the second connection hole 1101 can be threaded holes, and the fastener 133 can be a screw, which can be fixedly connected to the first connection hole 1321 and the second connection hole 1101 by the screw. Among them, the axis of the positioning column 131 extends vertically up and down.

[0054] The connecting rod 132 can move in the axial direction of the positioning column 131, that is, the connecting rod 132 can move in the up and down directions. Through the movement of the connecting rod 132, the positioning assembly 110 can move with the connecting rod 132, and the positioning assembly 110 can also move up and down.

[0055] Different workpieces placed on the work board 20 have different thicknesses. By setting the positioning assembly 110 up and down, different spacing heights can be formed between the work board 20, so that the positioning assembly 110 can be adapted to press fit workpieces of different thicknesses. The top end of the connecting rod 132 refers to the end away from the work board 20.

[0056] It can be seen from the above that the positioning assembly 110 can not only move in the horizontal direction, but also move in the vertical up and down direction.

[0057] In another embodiment of the present application, the connecting assembly 130 further includes a first elastic member 134 , which is disposed between the connecting rod 132 and the positioning column 131 , with one end of the first elastic member 134 connected to the connecting rod 132 and the other end connected to the positioning column 131 .

[0058] The first elastic member 134 can cause the positioning assembly 110 to move downward. The specific process is as follows: when the positioning assembly 110 moves upward, the first elastic member 134 is compressed and deformed, and the first elastic member 134 generates an elastic restoring force. The restoring force of the first elastic member 134 acts on the connecting rod 132, pressing the connecting rod 132 downward, thereby driving the positioning assembly 110 to move downward. In this way, the positioning assembly 110 can be tightly pressed on the workpiece. A certain spacing space is formed between the outer wall of the connecting rod 132 and the inner wall of the positioning column 131. The first elastic member 134 can be sleeved on the outer wall of the connecting rod 132, and the lower end of the connecting rod 132 can be protrudingly arranged. One end of the first elastic member 134 can abut against the lower end of the connecting rod 132, and the other end abuts against the top of the positioning column 131. After the first elastic member 134 is deformed by pressure, it can cause the positioning assembly 110 to fall quickly. The first elastic member 134 can be a spring, or other structures with elastic deformation.

[0059] In one embodiment of the present application, the positioning device 10 further includes a pressing assembly 140 , and the pressing assembly 140 includes a side pressing plate 141 , and the side pressing plate 141 is elastically connected to the side of the connecting assembly 130 .

[0060] For example, the connection assembly 130 includes a connection seat 135, and the side pressure plate 141 is elastically connected to a side wall surface of the connection seat 135. When in use, the side pressure plate 141 presses against the workpiece, and the distance between the side pressure plate 141 and the side wall surface of the connection seat 135 is shortened, and the side pressure plate 141 generates an elastic restoring force, and the side pressure plate 141 can reversely press on the workpiece to make the position of the workpiece more stable. More specifically, one side of the workpiece can abut against the edge of the positioning plate, and the other side abuts against the side pressure plate 141. By pressing the two sides of the positioning plate and the side pressure plate 141 together, the workpiece can be stably fixed on the work plate 20.

[0061] In another embodiment of the present application, the pressing assembly 140 also includes a guide column 142 and a second elastic member 143; at least one guide column 142 is provided, the guide column 142 is passed through the pressing assembly 140, and is connected to the side pressure plate 141; the second elastic member 143 is sleeved on the guide column 142, one end of the second elastic member 143 is connected to the guide column 142, and the other end is connected to the pressing assembly 140.

[0062] Two guide posts 142 may also be provided. The provision of two guide posts 142 is beneficial to the balance of the side pressure plate 141, reduces the pressure balance on the side pressure plate 141, and ensures that the pressure applied to the workpiece by the left and right sides is equal. The second elastic member 143 is sleeved on the guide post 142; when the workpiece presses against the side pressure plate 141, the side pressure plate 141 approaches the connecting seat 135, and the second elastic member 143 is deformed to form a restoring force. The restoring force acts on the side pressure plate 141, driving the side pressure plate 141 to move in a direction away from the connecting seat 135, so that the side pressure plate 141 is pressed against the workpiece. The second elastic member 143 may be a spring, or other structure with elastic deformation.

[0063] The positioning device 10 also includes a resistance-enhancing layer 144, which is arranged on the side of the side pressure plate 141 facing away from the connecting seat 135. The resistance-enhancing layer 144 is used to increase the friction of the workpiece on the working plate 20. The resistance-enhancing layer 144 can be a silicone layer or a rubber layer. When in use, the workpiece approaches the positioning device 10 from the side. For example, if the workpiece to be processed is a plate-like structure, the friction between the positioning device 10 and the side of the workpiece is increased by the resistance-enhancing layer 144, so as to achieve preliminary fixation of the processed material in advance. Then pull and lift the positioning assembly 110 to make the positioning assembly 110 abut against the upper surface of the workpiece.

[0064] See also Figure 5 As shown, in another embodiment of the present application, the upper surface of the connection seat 135 of the connection component 130 is provided with a positioning protrusion 1351, and the surface of the positioning component 110 facing the connection seat 135 is provided with a positioning hole 1102. When the positioning component 110 rotates around the positioning column 131, the positioning protrusion 1351 can be engaged in the positioning hole 1102; the positioning hole 1102 can restrict and fix the positioning protrusion 1351 to prevent the positioning component 110 from rotating at will. Through the cooperation between the positioning protrusion 1351 and the positioning hole 1102, the positioning component 110 and the connection component 130 can also rotate at several fixed angles.

[0065] In one embodiment of the present application, the positioning assembly 110 is arranged on one side of the connecting seat 135, the fixing assembly 120 includes a fixing rod 121, the fixing rod 121 is passed through the connecting assembly 130, the connecting assembly 130 includes a connecting seat 135, and is movably arranged up and down on the connecting seat 135, and the lower end of the fixing rod 121 is used to abut against and fix the working plate 20.

[0066] The fixing rod 121 includes a resistance portion 1211 and an adjustment portion 1212. The adjustment portion 1212 is disposed at the upper end of the resistance portion 1211. The resistance portion 1211 is inserted through the connection seat 135. The lower end of the resistance portion 1211 extends in a direction away from the adjustment portion 1212. The adjustment portion 1212 is used to adjust the insertion position of the resistance portion 1211 on the connection seat 135. When fixed to the work board 20, the adjustment portion 1212 adjusts the position of the resistance portion 1211 on the connection seat 135, so that the resistance portion 1211 moves downward, and the lower end of the resistance portion 1211 can abut against the upper surface of the work board 20, so that the fixing assembly 120 is fixed to the work board 20.

[0067] In one embodiment of the present application, two fixing columns 122 are provided. The two fixing columns 122 are spaced apart on the lower surface of the connecting seat 135 and are arranged in sequence in a direction away from the positioning assembly 110 . The fixing columns are used to position the working board 20 .

[0068] In order to facilitate the connection between the connection assembly 130 and the work board 20, the connection assembly 130 also includes a positioning portion 123, which is arranged at the lower end of the fixed column 122, and the cross-sectional area of ​​the positioning portion 123 is larger than the cross-sectional area of ​​the fixed column 122. The positioning portion 123 is used to position and clamp on the work board 20. The work board 20 is provided with a slide groove 210, and the lower end of the slide groove 210 is wide and the upper end is narrow. The positioning portion 123 can be clamped to the lower end of the slide groove 210, and the width of the positioning portion 123 is larger than the notch of the slide groove 210. In this way, the positioning portion 123 cannot be easily separated from the slide groove 210, ensuring the positioning connection of the connection assembly 130 and the work board 20. In order to further improve the stability of the connection positioning, two positioning portions 123 can be provided, one positioning portion 123 is provided at a fixed lower end, and the two positioning portions 123 are respectively provided in different slide grooves 210, which increases the connection points of the positioning, thereby improving the stability of the positioning and preventing the positioning device 10 from sliding relative to the work board 20.

[0069] In addition, the positioning device 10 has another structure. Figures 6 to 9 As shown, the connection assembly 130 further includes a first clamping plate 136 and a second clamping plate 137, which are arranged on opposite sides of the connection seat 135 and penetrated through the connection seat 135. The first clamping plate 136 and the second clamping plate 137 are provided with a barb portion at one end away from the connection seat 1, and the barb portion is used to be clamped in the slide groove 210 of the work plate 20; the connection assembly 130 further includes a third elastic member 138, which is arranged on the first clamping plate 136 or the second clamping plate 137, and a clamping space is formed between the first clamping plate 136 and the second clamping plate 137. The third elastic member 138 can be a torsion spring, and a rubbing shaft 139 is penetrated in the middle of the torsion spring. The slide groove 210 of the work plate 20 is narrowed at the notch position, and the barb portion can be clamped in the notch position.

[0070] See also Figures 10 to 12 As shown, in addition to the above two structures, the present application also provides a positioning device 10 of a structure. The length direction of the positioning component 110 is orthogonal to the length direction of the connecting component 130, the length of the positioning component 110 is greater than the length of the connecting component 130, the upper surface of the positioning component 110 is provided with scale lines, the fixing component 120 includes a screw, and the first connecting hole 1321 and the second connecting hole 1101 are threaded holes. The connecting component 130 is fixed to the positioning component 110 by connecting the first connecting hole 1321 and the second connecting hole 1101 with a screw.

[0071] It should be further explained that scale lines can also be set on the side of the upper surface of the work plate 20, and together with the scale lines on the upper surface of the connecting component 130, a plane coordinate system is formed on the upper surface of the work plate 20. When performing laser engraving, the processing position can be quickly determined through this coordinate system, and the size of the workpiece can also be measured.

[0072] The present application also provides a work board 20 , on which the positioning device 10 described above is installed. The work board 20 forms a slide groove 210 , a part of the connecting component 130 of the positioning device 10 is arranged in the slide groove 210 , and one end of the fixing component 120 abuts against the work board 20 .

[0073] The upper surface of the connection seat 135 of the connection component 130 is provided with a protrusion, and the surface of the positioning component 110 facing the connection seat 135 is provided with a positioning groove. When the protrusion is located in the positioning groove, the length direction of the positioning component 110 is orthogonal to the length direction of the connection seat 135; in order to increase the downward pressure area, the positioning component 110 is usually set in a plate shape, and the positioning component 110 extends to a certain length. At the same time, in order to improve the degree of fixation of the positioning component 110 on the working board 20, the connection seat 135 also has a certain length. A plurality of slide grooves 210 are provided on the working board 20, and the slide grooves are extended in parallel. Through the positioning of the positioning grooves, the length direction of the positioning plate can be orthogonal to the extension direction of the slide grooves 210.

[0074] In another embodiment of the present application, two positioning devices 10 are provided, and the positioning devices 10 include a pressing assembly 140. The pressing assemblies 140 of the two positioning devices 10 are arranged opposite to each other, and the pressing assembly 140 is used to position the workpiece on the work plate 20. The workpiece can be clamped in the middle by the two positioning devices 10, and the opposite sides of the workpiece are subjected to force to complete the fixation on the work plate 20. Furthermore, the positioning assemblies 110 in the two positioning devices 10 can be rotated to form a 90° angle with the side surface of the connecting assembly 130, so that the two positioning assemblies 110 can also be positioned at the diagonal positions of the workpiece respectively.

[0075] The present application also provides a laser processing device, which includes a work plate 20, a laser, and a positioning device 10 as described above, wherein the positioning device 10 is mounted on the work plate 20, and the laser outlet of the laser faces the work plate 20. The positioning device 10 can position the workpiece on the work plate 20, and the laser emitted by the laser is directed toward the workpiece that has been positioned and fixed, thereby completing the engraving process on the workpiece.

[0076] Other embodiments and beneficial effects of the laser processing equipment may refer to the specific embodiment of the positioning device 10 described above.

[0077] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary technical means in the art that are not disclosed in the present application.

[0078] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A positioning device, characterized in that: The positioning device is applied to laser processing, and the positioning device comprises: A positioning component, the positioning component is used to position a workpiece for laser processing; A fixing assembly, the fixing assembly being used to be fixed to a work plate on which a workpiece is placed; A connecting component, wherein the connecting component is connected to the positioning component and the fixing component respectively to fix the positioning component on the working board; The pressing assembly includes a side pressing plate, and the side pressing plate is elastically connected to the side of the connecting assembly.

2. The positioning device according to claim 1, characterized in that: The connecting assembly comprises a positioning post, the positioning assembly is rotatably connected to the positioning post, and the positioning assembly rotates around the positioning post in a plane parallel to the upper surface of the working plate.

3. The positioning device according to claim 2, characterized in that: The connecting assembly further includes a connecting rod, which is passed through the positioning column and is movably arranged in the axial direction of the positioning column. A first connecting hole is arranged at the top of the connecting rod, and a second connecting hole is arranged in correspondence with the first connecting hole. The connecting assembly also includes a fastener, which is sequentially inserted into the second connecting hole and the first connecting hole and connected to the connecting rod.

4. The positioning device according to claim 3, characterized in that: The connecting assembly further includes a first elastic member, which is disposed between the connecting rod and the positioning column. One end of the first elastic member is connected to the connecting rod, and the other end is connected to the positioning column.

5. The positioning device according to claim 1, characterized in that: The pressing assembly further includes a guide column and a second elastic member; At least one guide post is provided, and the guide post is passed through the pressing assembly and connected to the side pressing plate; The second elastic member is sleeved on the guide column, one end of the second elastic member is connected to the guide column, and the other end is connected to the pressing assembly.

6. The positioning device according to any one of claims 1 to 5, characterized in that: The fixing assembly includes a fixing rod, the connecting assembly includes a connecting seat, the fixing rod is passed through the connecting seat and is movably arranged up and down on the connecting seat; The positioning assembly is arranged at one side of the connecting seat, and the fixing assembly further comprises a fixing column. Two fixing columns are arranged at intervals on the lower surface of the connecting seat and are arranged sequentially in a direction away from the positioning assembly.

7. A work board, characterized in that: The work board is mounted with a positioning device as claimed in any one of claims 1 to 6, the work board is formed with a slide groove, and a partial structure of the connecting component is arranged in the slide groove.

8. The work board according to claim 7, characterized in that: There are two positioning devices, each of which includes a pressing assembly. The pressing assemblies of the two positioning devices are arranged opposite to each other, and the pressing assemblies are used to position the workpiece on the working plate.

9. A laser processing device, characterized in that: The laser processing equipment comprises a working plate, a laser, and a positioning device according to any one of claims 1 to 6, wherein the positioning device is mounted on the working plate, and a laser outlet of the laser faces the working plate.

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