Inkjet device

Abstract

The application discloses a kind of jet printing equipment, including carrier plate platform, cylinder, connecting rod, multiple pressure head and positioning assembly, cylinder includes first cylinder and second cylinder;Pressure head includes pressure head stem and pressure head cap, the edge of two adjacent sides of carrier plate platform is also provided with at least two through holes, and the through hole is located in the side of pressure head cap and presses the printed circuit board;Positioning assembly includes positioning column and connecting piece, positioning column is arranged in through hole, and one end of positioning column extends out of carrier plate platform, and the other end extends to the inside of carrier plate platform and is movably connected with connecting piece, and connecting piece is connected with connecting rod;The length of through slot is equal to the distance between pressure head stem and positioning column;First cylinder is used to drive connecting rod along with connecting piece to move in the direction perpendicular to carrier plate platform;Second cylinder is horizontally connected with connecting piece, for driving connecting piece along with connecting rod to move in the extension direction of through slot.The application improves the printing alignment accuracy of jet printing equipment, and facilitates the removal of printed printed circuit board after jet printing.

Description

Technical Field

[0001] This application relates to the field of printed circuit board processing technology, and more particularly to a printing equipment. Background Technology

[0002] With the development of the times, the progress of science and technology, and the urgent need for energy conservation and emission reduction, industrial automated inkjet printing equipment has emerged to replace traditional manual screen printing of characters.

[0003] During the printing process of printed circuit boards, operators frequently move the printed circuit boards up and down. Traditional printed circuit board character printing equipment relies solely on the pressure head of the platform fixture to position the printed circuit board being processed. Under such circumstances, if the operator is negligent or operates improperly, it is easy to cause printing alignment failure, reduced printing accuracy, or even damage to the print head. Moreover, the pressure head of the traditional fixture can obstruct the printed circuit board, making it difficult for the operator to remove the printed circuit board from the printing equipment.

[0004] Therefore, how to improve the printing alignment accuracy of inkjet printing equipment while making it easy to remove the printed circuit board after printing has become an urgent problem to be solved in this field. Summary of the Invention

[0005] The purpose of this application is to provide a printing device that improves the printing alignment accuracy of the printing device while facilitating the removal of the printed circuit board after printing.

[0006] This application discloses a printing device for printing printed circuit boards, comprising: a carrier platform, a cylinder, a connecting rod, multiple pressure heads, and a positioning assembly. The cylinder is installed inside the carrier platform, and multiple through slots are provided on the adjacent edges of the carrier platform. Each pressure head is disposed in each of the through slots. The cylinder includes a first cylinder and a second cylinder. The first cylinder is disposed below the connecting rod, and the connecting rod is horizontally disposed on the telescopic rod of the first cylinder and fixedly connected to the telescopic rod of the first cylinder. Each pressure head includes a pressure head rod and a pressure head cap. One end of the pressure head rod is fixedly connected to the pressure head cap and is located above the carrier platform. The other end passes vertically through the connecting rod and is connected to the connecting rod. The pressure head cap is used to press the printed circuit board. The adjacent edges of the carrier platform have multiple through slots. The edge is also provided with at least two through holes, which are located on the side where the pressure head cap presses the printed circuit board; the positioning assembly includes a positioning post and a connector, the positioning post is disposed in the through hole, and one end of the positioning post extends out of the carrier platform, and the other end extends into the carrier platform and is movably connected to the connector, the connector being connected to the connecting rod; the through groove is elongated, the through groove extending in the same direction as the length direction of the carrier platform, and the length of the through groove is equal to the distance between the pressure head rod and the positioning post; the first cylinder is used to drive the connecting rod and the connector to move in a direction perpendicular to the carrier platform; the second cylinder is horizontally connected to the connector and is used to drive the connector and the connecting rod to move in the extending direction of the through groove.

[0007] Optionally, the connector has an L-shaped cross-section and includes a first connecting portion and a second connecting portion that are perpendicular to each other. The first connecting portion and the second connecting portion are respectively fastened to the top surface and side surface of the connecting rod and connected to the connecting rod.

[0008] Optionally, the first connecting part is provided with a limiting protrusion on the side facing the top surface of the connecting rod, and the connecting rod is provided with a limiting groove corresponding to the position of the limiting protrusion. The limiting protrusion and the limiting groove are matched in shape, and the limiting protrusion is embedded in the limiting groove.

[0009] Optionally, a limiting member is provided at one end of the positioning post near the first connecting part, and a sliding groove is provided at the position of the first connecting part corresponding to the positioning part. The sliding groove has a T-shaped structure and extends along the top surface of the first connecting part. The extension direction of the sliding groove is the same as the movement direction of the connecting member, and the length of the sliding groove is equal to the length of the through groove. The limiting member matches the shape of the sliding groove and is embedded in the sliding groove, and can slide along the extension direction of the sliding groove.

[0010] Optionally, a guide sleeve is provided on the side of the through hole near the connector, the diameter of the guide sleeve is equal to the diameter of the positioning post, and the positioning post passes through the guide sleeve and connects to the connector.

[0011] Optionally, the maximum height of the positioning post extending out of the carrier platform is less than the maximum height of the pressure head cap extending out of the carrier platform.

[0012] Optionally, when the pressure head rod moves to one end of the through slot near the positioning post, the side of the pressure head rod that abuts against the printed circuit board and the side of the positioning post that abuts against the printed circuit board are on the same horizontal plane.

[0013] Optionally, the portions of the pressure rod and the positioning post that protrude from the carrier platform are both fitted with buffers. The total width of the pressure rod and the buffer is less than the width of the through groove, and the total width of the positioning post and the buffer is less than the width of the through hole.

[0014] Optionally, the length of the through groove is between 10 cm and 15 cm.

[0015] Optionally, the printing equipment further includes a motor and a guide shaft, both of which are disposed inside the carrier platform. The motor is connected to one end of the guide shaft. A guide groove is provided on the side of the carrier platform away from the positioning post, and the guide groove extends horizontally toward the carrier platform. The pressure head further includes multiple positioning pressure heads, which are disposed in the guide groove and connected to the other end of the guide shaft. The motor drives the guide shaft, causing the positioning pressure heads to move along the extension direction of the guide groove and press against the printed circuit board from the horizontal direction.

[0016] The inkjet printing equipment of this application improves the pressure head of the carrier platform and additionally sets up a positioning component connected to the connecting rod of the pressure head. When the printed circuit board to be printed needs to be printed, the first cylinder drives the connecting rod and the connecting piece to move in a direction perpendicular to the carrier platform. The connecting rod and the connecting piece rise simultaneously, so that the pressure head and the positioning post rise relative to the carrier platform at the same time. At this time, the two sides of the printed circuit board abut against the positioning posts on the two adjacent sides of the carrier platform, respectively. By simultaneously positioning the two adjacent sides of the printed circuit board, the first pre-positioning of the printed circuit board is formed. Then, the second cylinder drives the connecting rod and the connecting piece to move simultaneously along the extension direction of the through slot, so that the pressure head moves towards the printed circuit board. As the pressure head moves to the end of the slot closest to the printed circuit board, the pressure head rod abuts against the printed circuit board, forming a second positioning of the printed circuit board through the pressure head rod. Finally, under the dual positioning of the pressure head and the positioning post, the printed circuit board is accurately positioned. At this time, the pressure head cap is used to press the printed circuit board. When it is necessary to remove the printed circuit board from the carrier platform, the second cylinder drives the connecting rod and the connector to move away from the printed circuit board at the same time, so that the pressing part of the pressure head cap is away from the top of the printed circuit board. This makes it easier to remove the printed circuit board from the carrier platform. This not only improves the printing alignment accuracy of the inkjet printing equipment, but also facilitates the removal of the printed circuit board after printing. Attached Figure Description

[0017] The accompanying drawings, which form part of the specification, are used to provide a further understanding of the embodiments of this application and illustrate the implementation methods of this application, together with the textual description, to explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0018] Figure 1 This is a schematic diagram of the first embodiment of the inkjet printing equipment of this application;

[0019] Figure 2 This is a top view of the first embodiment of the inkjet printing equipment of this application;

[0020] Figure 3 This is a schematic diagram of the assembly of the connector and the positioning post in the first embodiment of the inkjet printing equipment of this application;

[0021] Figure 4 This is a schematic diagram of the assembly of the connector and connecting rod in the second embodiment of the inkjet printing equipment of this application;

[0022] Figure 5 This is a schematic diagram of the third embodiment of the inkjet printing equipment of this application;

[0023] Figure 6 This is a schematic diagram of the fourth embodiment of the inkjet printing equipment of this application;

[0024] Figure 7 This is a schematic diagram of the fifth embodiment of the inkjet printing equipment of this application;

[0025] Figure 8 This is a top view of the fifth embodiment of the inkjet printing equipment of this application.

[0026] Among them, 10 is the printing equipment; 100 is the carrier platform; 110 is the through groove; 120 is the through hole; 200 is the cylinder; 210 is the first cylinder; 220 is the second cylinder; 300 is the connecting rod; 310 is the limiting groove; 400 is the pressure head; 410 is the pressure head rod; 420 is the pressure head cap; 430 is the positioning pressure head; 500 is the positioning assembly; 510 is the connector; 511 is the first connecting part; 512 is the limiting protrusion; 513 is the slide groove; 514 is the second connecting part; 520 is the positioning post; 521 is the limiting part; 522 is the guide sleeve; 530 is the buffer part; 600 is the printed circuit board; 700 is the motor; 800 is the guide shaft; 810 is the guide groove; and 820 is the adsorption plate. Detailed Implementation

[0027] It should be understood that the terminology, specific structural and functional details used herein are merely for describing particular embodiments and are representative. However, this application may be implemented in many alternative forms and should not be construed as being limited to the embodiments set forth herein.

[0028] The present application will now be described in detail with reference to the accompanying drawings and optional embodiments.

[0029] Figure 1 This is a schematic diagram of the first embodiment of the inkjet printing equipment of this application. Figure 2 This is a top view of the first embodiment of the inkjet printing equipment of this application, as shown. Figure 1 and Figure 2As shown, this application discloses a printing device 10 for printing on a printed circuit board 600, including: a carrier platform 100, a cylinder 200, a connecting rod 300, multiple pressure heads 400, and a positioning assembly 500. The cylinder 200 is installed inside the carrier platform 100. Multiple through slots 110 are provided on the edges of adjacent sides of the carrier platform 100. Each pressure head 400 is disposed in each through slot 110. The cylinder 200 includes a first cylinder 210 and a second cylinder 220. The first cylinder 210 is located below the connecting rod 300, which is horizontally mounted on the telescopic rod of the first cylinder 210 and fixedly connected to it. The pressure head 400 includes a pressure head rod 410 and a pressure head cap 420. One end of the pressure head rod 410 is fixedly connected to the pressure head cap 420 and is located above the carrier platform 100. The other end passes vertically through the connecting rod 300 and is connected to it. The pressure head cap 420 is used to press the printed circuit board 600. At least two through holes 120 are provided on the edges of adjacent sides of the plate platform 100. The through holes 120 are located on the side where the pressure head cap 420 presses the printed circuit board 600. The positioning assembly 500 includes a positioning post 520 and a connector 510. The positioning post 520 is disposed in the through hole 120, and one end of the positioning post 520 extends out of the plate platform 100, while the other end extends into the plate platform 100 and is movably connected to the connector 510. The connector 510 is connected to the connecting rod 300. The through groove 110 is elongated and extends in the same direction as the length of the plate platform 100. The length of the through groove 110 is equal to the distance between the pressure head rod 410 and the positioning post 520. The first cylinder 210 is used to drive the connecting rod 300 and the connector 510 to move in a direction perpendicular to the plate platform 100. The second cylinder 220 is horizontally connected to the connector 510 and is used to drive the connector 510 and the connecting rod 300 to move in the direction of extension of the through groove 110.

[0030] The inkjet printing equipment 10 of this application improves the pressure head 400 of the carrier platform 100 and additionally sets up a positioning component 500 connected to the connecting rod 300 of the pressure head 400. Since multiple pressure heads 400 are connected to the connecting rod 300 at the same time in this application, multiple pressure heads 400 can rise or fall together under the drive of the first cylinder 210 by the connecting rod 300. In this way, when it is necessary to press the side of the printed circuit board 600, multiple pressure heads 400 can be driven to press down at the same time by one connecting rod 300, which increases the pressing area of ​​the printed circuit board 600 and makes it easier to keep the side of the printed circuit board 600 flat, which is beneficial to the inkjet printing. Since the connector 510 of the positioning component 500 is connected to the connecting rod 300, the connector 510 and the positioning post 520 connected to the connector 510 will also rise or fall together with the connecting rod 300.

[0031] The elongated through-slot 110 allows the pressure head 400 to move horizontally along the extension direction of the through-slot 110 when the second cylinder 220 drives the connecting rod 300 and the connector 510 to move horizontally, thereby pressing or releasing the printed circuit board 600 from the side.

[0032] When the printed circuit board 600 to be printed needs to be printed, the first cylinder 210 drives the connecting rod 300 and the connector 510 to move in a direction perpendicular to the carrier platform 100. The connecting rod 300 and the connector 510 rise simultaneously, causing the pressure head 400 and the positioning post 520 to rise simultaneously relative to the carrier platform 100. At this time, the two sides of the printed circuit board 600 abut against the positioning posts 520 on the two adjacent sides of the carrier platform 100, respectively. By simultaneously positioning the two adjacent sides of the printed circuit board 600, the first pre-positioning of the printed circuit board 600 is formed. Then, the second cylinder 220 drives the connecting rod 300 and the connector 510 to move simultaneously in the extension direction of the through groove 110, causing the pressure head 400 to move toward the printed circuit board 600. When the pressure head 400 moves to the through groove 110 and approaches the printed circuit board 600... When one end of the printing plate is in contact with the printed circuit board 600, the pressure head rod 410 forms abutment with the printed circuit board 600, and the pressure head rod 410 forms a second positioning of the printed circuit board 600. Finally, under the dual positioning of the pressure head 400 and the positioning post 520, the printed circuit board 600 is accurately positioned. At this time, the pressure head cap 420 is used to press the printed circuit board 600. When it is necessary to remove the printed circuit board 600 from the carrier platform 100, the second cylinder 220 drives the connecting rod 300 and the connecting piece 510 to move away from the printed circuit board 600 at the same time, so that the pressing part of the pressure head cap 420 is away from the top of the printed circuit board 600. This makes it easier to remove the printed circuit board 600 from the carrier platform 100. This not only improves the printing alignment accuracy of the inkjet printing equipment 10, but also makes it easier to remove the printed circuit board 600 after printing.

[0033] Specifically, such as Figure 1 As shown, the connector 510 has an L-shaped cross-section and includes a first connecting portion 511 and a second connecting portion 514 that are perpendicular to each other. The first connecting portion 511 and the second connecting portion 514 are respectively fastened to the top surface and side surface of the connecting rod 300 and connected to the connecting rod 300. Since the connecting rod 300 is a long rectangular rod, the L-shaped connector 510 allows the first connecting portion 511 and the second connecting portion 514 to fit well against the top surface and side surface of the connecting rod 300, so that the connector 510 can be stably fastened to the connecting rod 300. The integral design with the connecting rod 300 makes it difficult for the connector 510 to fall off the connecting rod 300, further ensuring the stability of the connector 510 and the connecting rod 300 moving together.

[0034] Figure 3This is a schematic diagram of the assembly of the connector and the positioning post in the first embodiment of the inkjet printing equipment of this application, as shown below. Figure 3 As shown, a limiting member 521 is provided at one end of the positioning post 520 near the first connecting part 511. A sliding groove 513 is provided at the position of the positioning part corresponding to the first connecting part 511. The sliding groove 513 has a T-shaped structure and extends along the top surface of the first connecting part 511. The extending direction of the sliding groove 513 is the same as the moving direction of the connecting part 510, and the length of the sliding groove 513 is equal to the length of the through groove 110. The limiting member 521 matches the shape of the sliding groove 513, and is embedded in the sliding groove 513, allowing it to slide along the extending direction of the sliding groove 513. During the installation of the positioning post 520 to the connecting part 510, it is only necessary to embed the limiting member 521 of the positioning post 520 into the sliding groove 513 of the first connecting part 511, and then embed the other end of the positioning post 520 into the through hole 120 on the carrier platform 100, thus completing the installation of the positioning post 520.

[0035] When the second cylinder 220 drives the connector 510 and the connecting rod 300 to move horizontally, the connector 510 will move relative to the positioning post 520 through the slide groove 513. Since the positioning post 520 is limited in the through hole 120 of the carrier platform 100, it will not move horizontally with the connector 510. Only when the first cylinder 210 drives the connector 510 and the connecting rod 300 to move vertically, the connector 510 pushes against the positioning post 520 and moves upward in the through hole 120 of the carrier platform 100. That is, through the design of the limiting member 521 and the slide groove 513 in this application, the connector 510 can move in both vertical and horizontal directions, while the positioning post 520 can only move in the vertical direction. This allows the positioning post 520 to position the printed circuit board 600 while the pressure rod 410 abuts against or releases the printed circuit board 600.

[0036] Furthermore, the maximum height of the positioning post 520 extending out of the carrier platform 100 is less than the maximum height of the pressure head cap 420 extending out of the carrier platform 100. This allows the positioning post 520 to be hidden inside the carrier platform 100 when the pressure head 400 presses the side of the printed circuit board 600 through the pressure head cap 420. This prevents the positioning post 520 from being exposed outside the carrier platform 100 during the printing process of the printhead on the printed circuit board 600, thus avoiding obstruction of the printhead and affecting normal printing.

[0037] In addition, in order to ensure that the printed circuit board 600 remains in the designated position and does not shift position when the pressure rod 410 and the positioning post 520 simultaneously abut and position the printed circuit board 600, the side of the pressure rod 410 abutting the printed circuit board 600 and the side of the positioning post 520 abutting the printed circuit board 600 are on the same horizontal plane when the pressure rod 410 moves to the end of the through groove 110 near the positioning post 520.

[0038] With this design, after the printed circuit board 600 is dually positioned by the positioning post 520 and the pressure head 400, the contact surfaces of the printed circuit board 600 with the positioning post 520 and the pressure head 400 always remain on the same horizontal plane. The position of the printed circuit board 600 is not easy to shift, ensuring the accuracy of the printhead when printing on the printed circuit board 600.

[0039] Furthermore, since the pressure head 400 moves along the extension direction of the through slot 110 in this application, the length of the through slot 110 directly determines the maximum moving distance of the pressure head 400. In order to ensure that the pressure head 400 can quickly perform secondary positioning of the printed circuit board 600 on the side of the carrier platform 100, and that when the printed circuit board 600 needs to be removed, the pressure head 400 can have enough space to avoid the printed circuit board 600 while releasing it, this application limits the length of the through slot 110: the length of the through slot 110 is between 10 cm and 15 cm.

[0040] When the length of the through groove 110 is 10 cm, the travel distance of the pressure head 400 is shorter, allowing for faster positioning and clamping of the printed circuit board 600. When the length of the through groove 110 is 15 cm, the pressure head 400 has sufficient space to avoid the printed circuit board 600 when it is released. When the length of the through groove 110 is 11.5 cm, the pressure head 400 can quickly position and clamp the printed circuit board 600, and there is sufficient space to avoid the printed circuit board 600 when it is released. It should be noted that the length of the through groove 110 can also be understood as the distance between the end of the through groove 110 away from the positioning post 520 and the positioning post 520. This is because when the pressure head 400 moves from the end of the through groove 110 away from the positioning post 520 to the end closer to the positioning post 520, the positioning post 520 and the pressure head rod 410 need to simultaneously abut and position the printed circuit board 600.

[0041] In addition, the pressure head cap 420 of the pressure head 400 is for pressing one end of the printed circuit board 600. Its shape is flat. This shape makes it easier to press the printed circuit board 600 horizontally when pressing it. This makes it less likely for the printed circuit board 600 to warp after being pressed by the pressure head 400. It also prevents the printhead from colliding with the printed circuit board 600 during the printing process, which could damage the printhead and the printed circuit board 600.

[0042] The size of the pressure head cap 420, which presses one end of the printed circuit board 600, is larger than the width of the through slot 110 on the carrier platform 100, so that the pressure head 400 will not fall out of the through slot 110 on the carrier platform 100. This ensures that the working area of ​​the pressure head 400 is always kept above the carrier platform 100 and can be effectively fixed to the printed circuit board 600.

[0043] The first cylinder 210 and the second cylinder 220 in this application can be cylinders 200 equipped with sensors and limit switches. The sensors can monitor whether the movement of the cylinder 200 has reached its maximum stroke range. The movement of the first cylinder 210 and the second cylinder 220 is controlled more accurately. When pressing printed circuit boards 600 of different thicknesses, the position of the cylinder 200 extension rod changes with the thickness of the printed circuit board 600. The limit switch of the cylinder 200 detects and provides feedback to detect whether the cylinder 200 is in position, and thus can detect whether the pressure head 400 is pressed in place.

[0044] In addition, the carrier platform 100 also includes an air pipe connector and an adsorption plate 820, a vacuum device. The adsorption plate 820 has an internal cavity structure, and the cavity of the adsorption plate 820 is connected to the vacuum device through the air pipe connector. Multiple through holes 120 are provided on the side of the adsorption plate 820 facing the nozzle. The printed circuit board 600 is placed on the adsorption plate 820. After the printed circuit board 600 is positioned by the pressure head 400 and the positioning post 520, the vacuum device is turned on to evacuate the internal cavity of the adsorption plate 820. As the gas in the cavity of the adsorption plate 820 decreases, the air pressure inside the adsorption plate 820 decreases. The printed circuit board 600 placed on the adsorption plate 820 is adsorbed and fixed on the adsorption plate 820 due to the air pressure difference. Then, the nozzle prints on the fixed printed circuit board 600. In this way, the adsorption plate 820 fixes the printed circuit board 600 more stably, making it less prone to displacement and shaking, ensuring that the nozzle prints more smoothly on the printed circuit board 600 during the printing process, thus improving the working efficiency of the equipment.

[0045] Figure 4 This is a schematic diagram of the assembly of the connector and connecting rod in the second embodiment of the inkjet printing equipment of this application, as shown below. Figure 4 As shown, Figure 4 The illustrated embodiment is based on Figure 1 In the improvement, the first connecting part 511 is provided with a limiting protrusion 512 on the side facing the top surface of the connecting rod 300, and the connecting rod 300 is provided with a limiting groove 310 corresponding to the position of the limiting protrusion 512. The shape of the limiting protrusion 512 matches the limiting groove 310, and the limiting protrusion 512 is embedded in the limiting groove 310.

[0046] The difference between this embodiment and the previous embodiment is that in this embodiment, the connector 510 and the connecting rod 300 are detachable. By providing a limiting protrusion 512 on the side of the first connecting portion 511 of the connector 510 facing the top surface of the connecting rod 300, and providing a limiting groove 310 on the connecting rod 300 at the position corresponding to the limiting protrusion 512, during the installation of the connector 510 and the connecting rod 300, the limiting protrusion 512 of the connector 510 is first embedded into the limiting groove 310 of the connecting rod 300, so that the connector 510 and the connecting rod 300 are locked together. When the connector 510 is damaged and needs to be replaced during frequent use, the connector 510 can be directly removed from the connecting rod 300 for replacement, which is not only simple and convenient to install and disassemble, but also saves costs.

[0047] Furthermore, to ensure that the positioning post 520 remains vertical and does not skew during its movement within the through hole 120 of the carrier platform 100, thus preventing positioning deviation of the printed circuit board 600, this application also improves the positioning component 500, as follows:

[0048] Figure 5 This is a schematic diagram of the third embodiment of the inkjet printing equipment of this application, as shown below. Figure 5 As shown, Figure 5 The illustrated embodiment is based on Figure 1 The improvement involves a guide sleeve 522 provided on the side of the through hole 120 near the connector 510. The diameter of the guide sleeve 522 is equal to the diameter of the positioning post 520. The positioning post 520 passes through the guide sleeve 522 and connects to the connector 510. During the up-and-down movement of the positioning post 520 along the through hole 120, since the positioning post 520 is embedded in the guide sleeve 522, the guide tube limits the movement direction of the positioning post 520, so that the positioning post 520 can only move up and down along the extension direction of the guide sleeve 522 and will not be misaligned, further ensuring the reliability of the up-and-down movement of the positioning post 520.

[0049] Both the positioning post 520 and the pressure head 400 of this application abut against the side of the printed circuit board 600. In particular, the pressure head 400 abuts against the printed circuit board 600 during movement, generating contact force. To prevent damage to the printed circuit board 600 when the positioning post 520 and the pressure head 400 abut against it for positioning, this application also improves the positioning post 520 and the pressure head 400, as follows:

[0050] Figure 6 This is a schematic diagram of the fourth embodiment of the inkjet printing equipment of this application, as shown below. Figure 6As shown, the portions of the pressure rod 410 and the positioning post 520 that protrude from the carrier platform 100 are both fitted with buffer members 530. The total width of the pressure rod 410 and the buffer member 530 is less than the width of the through groove 110, and the total width of the positioning post 520 and the buffer member 530 is less than the width of the through hole 120.

[0051] By installing a buffer 530 on the positioning post 520 and the pressure rod 410, the buffer 530 can be made of materials such as rubber. When the printed circuit board 600 is placed on the carrier platform 100 and comes into contact with the positioning post 520, the printed circuit board 600 first contacts the buffer 530 on the positioning post 520. The buffer 530 transforms the hard contact between the printed circuit board 600 and the positioning post 520 into a soft contact, releasing the squeezing force of the printed circuit board 600 on the positioning post 520 and forming a buffer between the positioning post 520 and the printed circuit board 600. When the pressure head 400 moves toward the printed circuit board 600 and comes into contact with the side of the printed circuit board 600, the buffer 530 on the pressure rod 410 will also transform the hard contact between the pressure rod 410 and the printed circuit board 600 into a soft contact, forming a buffer against the contact force between the pressure rod 410 and the printed circuit board 600, effectively protecting the printed circuit board 600 from wear by the pressure rod 410 and the positioning post 520.

[0052] The total width of the pressure rod 410 and the buffer 530 is less than the width of the through groove 110, which ensures that the pressure rod 410 with the limiter 521 can move normally in the horizontal and vertical directions within the through groove 110; the total width of the positioning post 520 and the buffer 530 is less than the width of the through hole 120, which ensures that the positioning post 520 with the buffer 530 can retract normally within the through hole 120 of the carrier platform 100.

[0053] Figure 7 This is a schematic diagram of the fifth embodiment of the inkjet printing equipment of this application. Figure 8 This is a top view of the fifth embodiment of the inkjet printing equipment of this application, as shown. Figure 7 and Figure 8 As shown, the printing equipment 10 also includes a motor 700 and a guide shaft 800. Both the motor 700 and the guide shaft 800 are disposed inside the carrier platform 100. The motor 700 is connected to one end of the guide shaft 800. A guide groove 810 is provided on the side of the carrier platform 100 away from the positioning post 520. The guide groove 810 extends horizontally toward the carrier platform 100. The pressure head 400 also includes a plurality of positioning pressure heads 430. The plurality of positioning pressure heads 430 are disposed in the guide groove 810 and connected to the other end of the guide shaft 800. The motor 700 drives the guide shaft 800, causing the positioning pressure heads 430 to move along the extension direction of the guide groove 810 and press against the printed circuit board 600 from the horizontal direction.

[0054] Multiple guide grooves 810 are evenly arranged on the side of the carrier platform 100 away from the positioning post 520; and there are multiple positioning pressure heads 430, which are respectively arranged in each guide groove 810. When the printed circuit board 600 is placed on the carrier platform 100 and positioned on two adjacent sides by the positioning post 520 and the pressure head 400, the multiple positioning pressure heads 430, driven by the motor 700, press the other side of the printed circuit board 600 horizontally along the guide grooves 810. This makes the force of the positioning pressure head 430 on the printed circuit board 600 in the horizontal direction more uniform, less prone to damage, and simultaneously limits the printed circuit board 600 from multiple directions, effectively preventing the position of the printed circuit board 600 from shifting and ensuring the accuracy of the print head during the printing process.

[0055] It should be noted that the inventive concept of this application can form many embodiments, but due to the limited space of the application documents, they cannot all be listed. Therefore, without conflict, the embodiments described above or the technical features can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effect will be enhanced.

[0056] The above description, in conjunction with specific optional embodiments, provides a further detailed explanation of this application and should not be construed as limiting the specific implementation of this application to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this application, and all such modifications or substitutions should be considered within the scope of protection of this application.

Claims

1. A printing apparatus for printing on printed circuit boards, characterized in that, include: The system includes a carrier platform, a cylinder, a connecting rod, multiple pressure heads, and a positioning assembly. The cylinder is installed inside the carrier platform. Multiple through slots are provided on the adjacent edges of the carrier platform, and each pressure head is disposed within one of these through slots. The cylinder includes a first cylinder and a second cylinder. The first cylinder is disposed below the connecting rod, and the connecting rod is horizontally disposed on the telescopic rod of the first cylinder and is fixedly connected to the telescopic rod of the first cylinder. The pressure head includes a pressure head rod and a pressure head cap. One end of the pressure head rod is fixedly connected to the pressure head cap and is located above the carrier platform. The other end passes vertically through the connecting rod and is connected to the connecting rod. The pressure head cap is used to press the printed circuit board. At least two through holes are provided on the edges of the adjacent two sides of the carrier platform, and the through holes are located on the side where the pressure head cap presses the printed circuit board; The positioning component includes a positioning post and a connector. The positioning post is disposed in the through hole, with one end of the positioning post extending out of the carrier platform and the other end extending into the interior of the carrier platform and movably connected to the connector. The connector is connected to the connecting rod. The through groove is elongated, and the extension direction of the through groove is the same as the length direction of the carrier platform. The length of the through groove is equal to the distance between the pressure head rod and the positioning post. The first cylinder is used to drive the connecting rod and the connecting member to move in a direction perpendicular to the carrier platform; the second cylinder is horizontally connected to the connecting member and is used to drive the connecting member and the connecting rod to move in the extension direction of the through groove. The connector has an L-shaped cross-section and includes a first connecting part and a second connecting part that are perpendicular to each other. The first connecting part and the second connecting part are respectively fastened to the top surface and the side surface of the connecting rod and connected to the connecting rod. A limiting member is provided at one end of the positioning post near the first connecting part. A sliding groove is provided on the first connecting part corresponding to the position of the positioning part. The sliding groove has a T-shaped structure and extends along the top surface of the first connecting part. The extension direction of the sliding groove is the same as the movement direction of the connecting member. The length of the sliding groove is equal to the length of the through groove. The limiting member matches the shape of the sliding groove and is embedded in the sliding groove, allowing it to slide along the extension direction of the sliding groove. While the connector can move in both vertical and horizontal directions, the positioning pin can only move in the vertical direction.

2. The inkjet printing equipment as described in claim 1, characterized in that, The first connecting part is provided with a limiting protrusion on the side facing the top surface of the connecting rod, and the connecting rod is provided with a limiting groove corresponding to the position of the limiting protrusion. The limiting protrusion and the limiting groove are matched in shape, and the limiting protrusion is embedded in the limiting groove.

3. The inkjet printing equipment as described in claim 2, characterized in that, A guide sleeve is provided on the side of the through hole near the connector. The diameter of the guide sleeve is equal to the diameter of the positioning post. The positioning post passes through the guide sleeve and connects to the connector.

4. The inkjet printing equipment as described in claim 1, characterized in that, The maximum height of the positioning post extending beyond the carrier platform is less than the maximum height of the pressure head cap extending beyond the carrier platform.

5. The inkjet printing equipment as described in claim 4, characterized in that, When the pressure head rod moves to one end of the through slot near the positioning post, the side of the pressure head rod that abuts against the printed circuit board and the side of the positioning post that abuts against the printed circuit board are on the same horizontal plane.

6. The inkjet printing equipment as described in claim 1, characterized in that, Both the portion of the pressure head rod and the portion of the positioning post protruding from the carrier platform are fitted with buffers. The total width of the pressure head rod and the buffer is less than the width of the through groove, and the total width of the positioning post and the buffer is less than the width of the through hole.

7. The inkjet printing equipment as described in claim 1, characterized in that, The length of the through groove ranges from 10 cm to 15 cm.

8. The inkjet printing equipment as described in claim 1, characterized in that, The printing equipment also includes a motor and a guide shaft, both of which are disposed inside the carrier platform. The motor is connected to one end of the guide shaft. A guide groove is provided on the side of the carrier platform away from the positioning post, and the guide groove extends horizontally toward the carrier platform. The pressure head also includes multiple positioning pressure heads, which are disposed in the guide groove and connected to the other end of the guide shaft; the motor drives the guide shaft to move the positioning pressure heads along the extension direction of the guide groove and press against the printed circuit board from the horizontal direction.

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