A support nail and air guide plate

Abstract

The utility model relates to a support nail and an air guide plate. The support nail described in the utility model comprises: a shell and a connecting block, the supporting surface of the shell is provided with an inwardly recessed air guide groove, the side wall of the shell is provided with a notch connected to the air guide groove, and the connecting block is arranged at the bottom of the shell to achieve the fixing of the support nail. The support nail and the air guide plate described in the utility model have the advantages of saving production cost and time and good versatility.

Description

Technical Field

[0001] The utility model relates to the technical field of air guide plates, in particular to a supporting nail and an air guide plate. Background Art

[0002] When the plugging machine prints the PCB board, the ink will pass through the through hole of the PCB board and then emerge from the back of the PCB board. If the PCB board is placed directly on an ordinary flat plate at this time, the ink will stick to the flat plate. When the operator picks up the board, part of the ink will be stuck to the flat plate, resulting in poor plugging quality. To solve this problem, the air guide plate will process corresponding avoidance holes in advance at the opening position of the PCB board, so that the through hole corresponds to the avoidance hole when plugging the hole, so that the board body will avoid the ink that emerges from the back of the PCB board and avoid sticking the ink away. At the same time, the air guide plate is matched with a bottom plate with an open air guide channel, so that the bottom of the PCB board is connected to the atmospheric environment when plugging the hole, and the air can enter the bottom of the air guide plate through the air guide channel, so that the air pressure on the upper and lower sides of the PCB board is balanced. In this way, the cavity formed by the avoidance hole of the PCB board and the air guide plate can avoid the pressure difference in the atmospheric environment, ensuring the plugging quality. However, this results in that each PCB board material number needs a corresponding air guide plate, and each type of air guide plate needs a corresponding bottom plate, which cannot be used interchangeably. These air guide plates and bottom plates require manpower and material resources for maintenance and storage, increasing production costs. In addition, there are tens of thousands or even hundreds of thousands of holes on a PCB. When making avoidance holes, a CNC drilling machine is needed to drill holes on the air guide plate. It usually takes 4-10 hours to make an air guide plate. The production time is too long, which affects production efficiency. Utility Model Content

[0003] Based on this, the purpose of the utility model is to provide a support nail and an air guide plate, which have the advantages of saving production cost and time and good versatility.

[0004] A support nail comprises a shell and a connecting block, wherein an inwardly recessed air guide groove is provided on the supporting surface of the shell, a notch connected to the air guide groove is provided on the side wall of the shell, and the connecting block is arranged at the bottom of the shell to achieve the fixation of the support nail.

[0005] The support nail described in the utility model realizes air pressure balance through the notch, and there is no need to drill holes and open air guide channels on the bottom plate, so that when the material number of the PCB board is changed, there is no need to replace the air guide pad as a whole and re-drill holes. The structure is simple and easy to operate, and a lot of time and cost for making and disassembling the air guide pad are saved in actual production.

[0006] Furthermore, the notch forms an opening on one side of the support surface, and the width of the opening is not less than the diameter of the plug hole. This structure enables the notch to balance the air pressure while also avoiding the ink, thereby ensuring the supporting effect of the support pin on the PCB board.

[0007] Furthermore, the connection block is a magnet. This structure can realize the quick connection between the connection block and the bottom plate, and is convenient for disassembly, assembly, arrangement and adjustment of the support nails.

[0008] Furthermore, a receiving groove is provided at the bottom of the shell, and the magnet is embedded in the receiving groove. This structure enables the magnet to be stably connected to the shell.

[0009] Furthermore, a limiting layer is provided at the bottom of the support pin, and the limiting layer is made of a material with a high friction coefficient or an adhesive material. This structure can increase the friction between the support pin and the bottom plate, prevent the support pin from moving or rotating horizontally, and improve stability.

[0010] The utility model also discloses an air guide plate, comprising a base plate and the above-mentioned supporting nails, wherein the supporting nails are in a plurality and are fixed to the base plate through the connecting block. The air guide plate has a simple structure and is easy to operate, which greatly reduces the manufacturing time and cost.

[0011] Furthermore, the bottom of the support nail is detachably provided with an adjusting gasket, and the height of the support nail can be adjusted by changing the number of the adjusting gaskets. This structure can eliminate the errors of various components and is conducive to improving the plugging quality.

[0012] Furthermore, the adjusting pad is made of magnetic material or metal material that can be attracted to a magnet. This structure ensures that the supporting pins and the bottom plate can be stably attracted to each other.

[0013] Furthermore, the bottom plate includes a plastic plate and an iron sheet arranged on the plastic plate. This structure can realize the lightweight of the bottom plate, which is convenient for workers to carry.

[0014] Furthermore, the bottom plate is provided with scales, which are in a matrix shape. This structure facilitates the rapid arrangement of the support pins, improves the efficiency of the pin arrangement, and reduces the time required for material replacement.

[0015] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the arrangement of the support pins described in Example 1;

[0017] Figure 2 This is a diagram showing the coordination of the PCB board and the air guide plate in Example 1;

[0018] Figure 3 is a structural diagram of the support pin;

[0019] Figure 4 is a cross-sectional view of the support pin and the adjusting gasket;

[0020] Figure 5 is a scale diagram of the base plate;

[0021] Figure 6 This is a schematic diagram of the arrangement of the support pins and positioning pins described in Example 2;

[0022] Figure 7 This is a diagram showing the coordination of the PCB board and the air guide plate in Example 2;

[0023] Figure 8 is a cross-sectional view of the positioning pin and the auxiliary fixing plate;

[0024] Explanation of the accompanying drawings: 1. Base plate; 2. Support nail; 21. Limiting layer; 22. Shell; 221. Support surface; 222. Air guide groove; 223. Notch; 224. Accommodating groove; 23. Connecting block; 3. Adjusting gasket; 4. Positioning nail; 41. Positioning seat; 42. Positioning pin; 5. PCB board; 51. Positioning process hole; 6. Auxiliary fixing plate. DETAILED DESCRIPTION

[0025] Example 1

[0026] See also Figure 1-5 , Figure 1 This is a schematic diagram of the arrangement of the support pins described in Example 1; Figure 2 This is a diagram showing the coordination of the PCB board and the air guide plate in Example 1; Figure 3 is a structural diagram of the support pin; Figure 4 is a cross-sectional view of the support pin and the adjusting gasket; Figure 5 is a scale diagram of the base plate.

[0027] The present invention discloses an air guide pad, comprising a base plate 1 and a plurality of support pins 2, wherein the support pins 2 are arranged on the base plate 1, and the arrangement mode and number of the support pins 2 can be adjusted according to the size and shape of a PCB board 5. When in use, the PCB board 5 is placed on the array of support pins 2, so that the support surface 221 at the top of the support pins 2 abuts against the PCB board 5. A limiting layer 21 is provided at the bottom of the support pins 2, and the limiting layer 21 is made of a material with a high friction coefficient or an adhesive material, such as a double-sided adhesive, so that the support pins 2 are not easy to rotate or move relative to the base plate 1.

[0028] The support pin 2 also includes a shell 22 and a connecting block 23. The shell 22 can be designed into various structural forms such as a prism. In the present embodiment, the shell 22 is preferably cylindrical, and its top surface is the support surface 221 of the shell 22, and the bottom surface is fixed to the bottom plate 1 through the connecting block 23. An inwardly recessed air guide groove 222 is provided on the support surface 221. The air guide groove 222 is in the shape of a cone that narrows inward from the support surface 221 and does not penetrate the shell 22, so that the side wall of the shell 22 is an annular thin-walled structure, thereby reducing the contact area between the support pin 2 and the PCB board 5, so that the support pin 2 can avoid the ink at the through hole.

[0029] The support surface 221 can be a plane or designed into a special shape to achieve different support effects. The support surface 221 can be in surface contact or line contact with the PCB board 5, thereby reducing the contact area with the PCB board 5, making it easier for the support pins 2 to avoid ink and reducing the difficulty of arranging the support pins 2.

[0030] The side wall of the housing 22 is provided with a notch 223 connected to the air guide groove 222. The notch 223 may be one or multiple notches distributed along the circumferential direction. In this embodiment, two notches are used as an example for explanation, and the two notches 223 are symmetrically arranged. During use, the PCB board 5 covers the air guide groove 222. At this time, the air guide groove 222 is connected to the external atmosphere through the notch 223, so it can replace the structure of the plate body opening the air guide channel in the traditional air guide pad, so that air can enter the air guide groove 222 through the notch 223, and balance the pressure difference between the two sides of the PCB board 5 when the PCB board 5 is plugged.

[0031] The notch 223 may be in the shape of a hole. Preferably, the notch 223 forms an opening on one side of the support surface 221, and the width of the opening is not less than the diameter of the through hole. During use, the support pin 2 can be rotated to adjust the opening position to correspond to the through hole of the PCB board 5, so as to achieve air conduction. When the support surface 221 of the support pin 2 cannot avoid the through hole, the support surface 221 can be avoided by the opening to prevent ink from adhering to the support pin 2.

[0032] The connecting block 23 is a magnet that is attracted to the bottom plate 1. A receiving groove 224 is provided at the bottom of the shell 22. The magnet is embedded in the receiving groove 224. The magnet can be flush with the bottom surface of the shell 22 or protrude from the bottom surface. The limiting layer 21 can be set at the bottom of the magnet or the bottom surface of the shell 22, or both the bottom of the magnet and the bottom surface of the shell 22 are provided with a limiting layer 21. The bottom plate 1 includes a plastic plate and an iron sheet arranged on the plastic plate. The iron sheet can be attracted to the magnet and the support pin 2 is fixed by magnetic attraction. The iron sheet can be embedded in the plastic plate or adhered to one side of the plastic plate. The plastic plate can be made of PP material, or made of a material with a high friction coefficient.

[0033] The iron sheet can also be replaced by a soft magnetic sheet, an iron plate or other material that can attract a magnet, or the bottom plate 1 can be directly designed as an integral iron platform to achieve the arrangement of the support pins 2.

[0034] Preferably, the base plate 1 is provided with scales in a matrix shape, so as to facilitate the arrangement of the support pins 2 and improve the arrangement efficiency.

[0035] For equipment with automatic loading and unloading devices, the bottom plate 1 can be slotted according to the equipment structure to avoid the clamps of the automatic loading and unloading device. Since the equipment of the automatic loading and unloading device does not need to be replaced due to the change of the material number of the PCB board 5, the bottom plate 1 can still be used for processing a variety of PCB boards 5.

[0036] Preferably, an adjusting gasket 3 is detachably provided between the supporting nail 2 and the base plate 1, so that the height of the supporting nail 2 can be adjusted by changing the number of the adjusting gaskets 3, thereby eliminating the errors of various components and improving the quality of the plugging hole. The adjusting gasket 3 can be connected to the supporting nail 2 by means of connection such as snapping, interlocking, and snapping, or it can be a traditional thin sheet structure so as to be clamped between the supporting nail 2 and the base plate 1. The adjusting gasket 3 is made of a magnetic material or a metal material that can be attracted by a magnet. In order to prevent the supporting nail 2 from rotating or displacing as a whole after adding the adjusting gasket 3, it is necessary to increase the roughness of the surface of the adjusting gasket 3, or to add a layer of material with a high friction coefficient or an adhesive material on the surface of the adjusting gasket 3. The adhesive material needs to ensure that the supporting nail 2 does not move or rotate during use, but when the operator adjusts the arrangement, the supporting nail 2 can be moved or rotated by increasing the applied force.

[0037] When in use, first arrange the support pins 2 on the bottom plate 1 according to the structure of the PCB board 5, and fine-tune the position of the support pins 2 in the local area according to the position of the through-holes of the PCB board 5, so that the support surface 221 avoids the ink flowing out of the through-holes. If the position of the support pin 2 really cannot make the support surface 221 avoid the ink, the position of its notch 223 can be adjusted by rotating the support pin 2. Even if the notch 223 corresponds to the through-hole, this process can be used to perform a trial print on the PCB board 5. After the trial print, if it is found that the edge of the support pin 2 is stained with ink, the support pin 2 needs to be adjusted, that is, the support pin 2 is rotated to avoid the oil point. If the position of the support pin 2 still cannot make the support surface 221 avoid the ink, that is, the support pin 2 still cannot avoid the oil point after rotation, the support pin 2 at this position can be removed.

[0038] After the support pins 2 are arranged, the air guide pad can be put into use. When the PCB board 5 is plugged, air can enter the bottom of the PCB board 5 through the gap 223 to balance the pressure difference between the two sides of the PCB board 5. When the processing of the PCB board 5 of the material number is completed and another PCB board 5 of the material number needs to be processed, the support pins 2 in the different areas can be rearranged according to the difference in the through-hole layout of the two PCB boards 5 to continue the operation without removing the air guide pad from the equipment.

[0039] The PCB board 5 can be plugged with a vacuum plugging machine or a non-vacuum plugging machine, that is, the air guide pad can adapt to all types of plugging machines. In particular, when a vacuum machine is used for plugging, since both sides of the PCB board 5 will change from a vacuum state to an atmospheric state, the support pins 2 can allow air to enter the bottom of the PCB board 5 through the gap 233 to balance the pressure difference between the two sides of the PCB board 5.

[0040] Example 2

[0041] See also Figure 6-8 , Figure 6 This is a schematic diagram of the arrangement of the support pins and positioning pins described in Example 2; Figure 7 This is a diagram showing the coordination of the PCB board and the air guide plate in Example 2; Figure 8 It is a cross-sectional view of the positioning pin and the auxiliary fixing plate.

[0042] This embodiment is basically the same as the embodiment 1, and the only difference is that it also includes a positioning pin 4, and the positioning pin 4 includes a positioning seat 41 and a positioning pin 42, the positioning seat 41 is arranged on the bottom plate 1, and the positioning pin 42 is protrudingly arranged on the positioning seat 41. The positioning pin 4 can be attached to the bottom plate 1 by gluing, or adsorbed on the bottom plate 1 by a magnet.

[0043] In the actual production process, the PCB board 5 is provided with a positioning process hole 51, so when the support pins 2 are arranged, the positioning pins 4 are arranged at positions corresponding to the positioning process holes 51. In this way, when the PCB board 5 is covered on the support pins 2, the positioning pins 42 penetrate into the positioning process holes 51, so that the PCB board 5 can be quickly and repeatedly positioned during batch operation, and the PCB board 5 can be prevented from shifting during the plugging operation.

[0044] Preferably, an auxiliary fixing plate 6 is further provided on the base plate 1, a positioning hole is opened in the auxiliary fixing plate 6, the positioning pin 4 is arranged in the positioning hole, and is fixed to the auxiliary fixing plate 6 by magnetic attraction or adhesive tape.

[0045] The air guide plate described in the utility model is supported by support pins and the air pressure is balanced by the notch. There is no need to drill holes on the bottom plate and open air guide channels, so that when the PCB board changes the material number, there is no need to replace the air guide plate as a whole and drill holes again. Instead, it is only necessary to rearrange the support pins in the different areas to continue the operation. The air guide plate has a simple structure and is easy to operate. In actual production, it saves a lot of time in making and disassembling the air guide plate, and improves production efficiency. At the same time, manufacturers using the air guide plate do not need to make a large number of corresponding air guide plates according to the material number, saving processing and storage costs.

[0046] It should be understood that in the description of the present application, the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise specified, "plurality" means two or more.

[0047] It should be noted that, in the description of this application, unless otherwise clearly specified and limited, the terms "set", "connected", "connected", and "hollow" 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the utility model, several modifications and improvements can be made, and the utility model is also intended to include these changes and modifications.

Claims

1. A support nail, characterized in that: It includes a shell and a connecting block. The supporting surface of the shell is provided with an inwardly recessed air guide groove. The side wall of the shell is provided with a notch connected to the air guide groove. The connecting block is arranged at the bottom of the shell to fix the supporting nail.

2. A support nail according to claim 1, characterized in that: The notch forms an opening on one side of the supporting surface, and the width of the opening is not less than the diameter of the plug hole.

3. A supporting nail according to claim 2, characterized in that: The connecting block is a magnet.

4. A supporting nail according to claim 3, characterized in that: The bottom of the shell is provided with a receiving groove, and the magnet is embedded in the receiving groove.

5. A supporting nail according to claim 3, characterized in that: A limiting layer is arranged at the bottom of the supporting pin, and the limiting layer is made of a material with a high friction coefficient or an adhesive material.

6. An air guide plate, characterized in that: It comprises a base plate and the supporting nails as described in any one of claims 1 to 5, wherein there are a plurality of the supporting nails, which are fixed to the base plate through the connecting blocks.

7. An air guide plate according to claim 6, characterized in that: The bottom of the support nail is also detachably provided with an adjusting gasket, and the height of the support nail can be adjusted by changing the number of the adjusting gaskets.

8. An air guide plate according to claim 7, characterized in that: The adjusting gasket is made of magnetic material or metal material that can be attracted by a magnet.

9. The air guide plate according to claim 6, characterized in that: The bottom plate comprises a plastic plate and an iron sheet arranged on the plastic plate.

10. An air guide plate according to claim 9, characterized in that: The bottom plate is provided with scales, which are in a matrix shape.

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