Plate assembling structure, feeding device and circuit board forming machine

Abstract

The utility model belongs to the technical field of machining equipment, and particularly relates to a plate assembling structure, a feeding device and a circuit board forming machine. The plate assembling structure comprises a positioning pin sleeve and a mounting plate for placing a plate; a first pin hole and a fixing hole are formed in the plate material, and a second pin hole is formed in the position, opposite to the first pin hole, of the mounting plate; avoiding holes are formed in the positions, opposite to the fixing holes, of the mounting plate; the positioning pin sleeve comprises a first column body and a second column body connected with the first column body; the outer diameter of the second column body is larger than that of the first column body; after assembly is completed, the plate material and the mounting plate are arranged in a stacked mode, the first column body penetrates through the first pin hole to be mounted in the second pin hole, and the second column body abuts against the end face, away from the mounting plate, of the plate material. The feeding device is convenient to assemble, the feeding efficiency is improved, the feeding time is shortened, and the structural stability in the machining process is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing equipment, in particular to a plate assembly structure, a feeding device and a circuit board forming machine. Background Art

[0002] At present, with the continuous development of electronic technology, more and more industries need to use circuit boards. Before loading the sheet, it is necessary to install pins on the carrier. After that, when loading, multiple sheets of the same specifications are stacked into a pile manually and manually positioned to fit the fixing holes on the sheet on the pins. The disadvantage of this solution is that since the sheet is often large in area and easily deformed when taking the sheet, it is difficult to position the fixing holes on the sheet to all the pins on the carrier at one time, that is, it is impossible to achieve a one-time fit. At this time, it is usually necessary to first fit the pins at the front end, and then tap the sheet to fit all the remaining pins and the remaining fixing holes to fix the sheet before proceeding to the next step.

[0003] In response to the above situation, a technical solution has been proposed to first combine multiple sheets into one through fixing pins so that the fixing holes on the multiple sheets are arranged correspondingly, and then the whole is fitted onto the pins on the carrier. However, it is difficult to judge whether the fixing pins are installed in place, which affects the assembly efficiency and quality, thereby increasing the loading and unloading time and reducing production efficiency. Utility Model Content

[0004] The utility model aims at the technical problem in the prior art that it is difficult to position the fixing holes on the plate to all the pins on the carrier at one time during feeding, and provides a plate assembly structure, a feeding device and a circuit board forming machine.

[0005] In view of the above technical problems, the embodiment of the utility model provides a sheet metal assembly structure, including a positioning pin sleeve and a mounting plate for placing the sheet metal; the sheet metal is provided with a first pin hole and a fixing hole, and a second pin hole is provided on the mounting plate at a position opposite to the first pin hole; and an avoidance hole is provided on the mounting plate at a position opposite to the fixing hole;

[0006] The positioning pin sleeve includes a first column and a second column connected to the first column; the outer diameter of the second column is larger than the outer diameter of the first column; after assembly, the sheet material and the mounting plate are stacked, the first column passes through the first pin hole and is installed in the second pin hole, and the second column abuts against the end face of the sheet material facing away from the mounting plate.

[0007] Optionally, a first guiding slope is disposed at one end of the second column facing away from the first column, and the first guiding slope is disposed around the outer circumference of the second column.

[0008] Optionally, the first pin hole and the second pin hole are coaxially arranged; and the inner diameters of the first pin hole and the second pin hole are equal.

[0009] Optionally, the first column is interference connected with the first pin hole and the second pin hole.

[0010] Optionally, the positioning pin sleeve further includes a positioning hole penetrating through the second column and the first column, and the positioning hole is coaxially arranged with the first column; the first column is provided with a guide surface at an opening position of the positioning hole.

[0011] Optionally, the avoidance hole is coaxially arranged with the fixing hole, and an inner diameter of the avoidance hole is larger than an inner diameter of the fixing hole.

[0012] Optionally, the sheet material assembly structure has a first direction, and the first direction is the direction in which the positioning pin sleeve is inserted into the sheet material;

[0013] In the first direction, the thickness of the mounting plate is amm, the total thickness of the sheet material is bmm, the length of the first column is cmm, and the following condition is satisfied: 0≤a+bc≤2.

[0014] Optionally, in the first direction, a distance from the top of the mounting plate to the bottom of the first column is greater than or equal to 0.5 mm.

[0015] Optionally, in the first direction, the thickness of the second column is d mm, satisfying: 2≤d≤4.

[0016] Optionally, the outer diameter of the second cylinder is h1mm, and the outer diameter of the first cylinder is h2mm, satisfying: 1.3≤h1 / h2≤2.

[0017] Optionally, the sheet metal assembly structure includes a plurality of the positioning pin sleeves, and the sheet metal assembly structure also has a second direction, and at least two of the positioning pin sleeves are respectively connected to two opposite sides of the mounting plate along the second direction and are arranged along the second direction.

[0018] An embodiment of the utility model also provides a loading device, including a material moving mechanism and the above-mentioned sheet material assembly structure; the loading device has a second direction, and the material moving mechanism is provided with a positioning groove, and the positioning groove is used to limit the second column, and the sheet material assembly structure is pushed to move along the second direction through the second column.

[0019] Optionally, in the second direction, the width of the positioning groove is greater than the outer diameter of the second column, and the difference between the width of the positioning groove and the outer diameter of the second column is 0.1-0.3 mm.

[0020] Optionally, the material moving mechanism comprises a clamping seat, a limiting arm and a clamping member, the clamping seat is provided with a sliding hole, the clamping member is movably connected to the sliding hole, the limiting arm is connected to one end of the clamping seat and is surrounded with the clamping member to form the positioning groove; the clamping member is provided with a second guiding inclined surface;

[0021] The first guide slope and the second guide slope are used to fit together when the second column moves to contact the clamping piece, so that the clamping piece is lifted up and retracted into the sliding hole under the guidance of the first guide slope and the second guide slope, thereby limiting the second column in the positioning groove.

[0022] An embodiment of the utility model also provides a circuit board forming machine, including a machine tool, a spindle and a chip suction hood, one end of the spindle is connected to the machine tool, and the other end is connected to the chip suction hood; the circuit board forming machine also includes the above-mentioned sheet material assembly structure, the sheet material assembly structure is movably connected to the machine tool and can be moved to a position opposite to the chip suction hood.

[0023] An embodiment of the utility model also provides a circuit board forming machine, including a machine tool, a spindle and a chip suction hood, one end of the spindle is connected to the machine tool, and the other end is connected to the chip suction hood; the circuit board forming machine also includes the above-mentioned loading device, which is arranged on the machine tool and can transport the sheet assembly structure to a position opposite to the chip suction hood.

[0024] Optionally, the circuit board forming machine further comprises a brush mounted on the chip suction cover, and the thickness of the second column is less than or equal to a minimum working length set for the brush.

[0025] Optionally, the chip hood has a processing end, which is the end of the chip hood close to the sheet material during processing; the chip hood is provided with a third guide slope at the processing end; the first guide slope and the third guide slope are used to fit together when the chip hood moves to contact the second column, so that the chip hood is lifted up under the guiding action of the first guide slope and the third guide slope, thereby avoiding collision between the chip hood and the second column.

[0026] In the utility model, before loading, the first column of the sheet material assembly structure is firstly passed through the first pin hole of the sheet material and installed in the second pin hole of the mounting plate, and the second column abuts against the end face of the sheet material facing away from the mounting plate, so that all the sheet materials are neatly assembled on the mounting plate so that the two are stacked and combined into one, and at this time, all the fixing holes on the sheet material are positioned and aligned with the avoidance holes on the mounting plate. The above-mentioned assembly structure has a simple structure, and during the positioning and assembly process, as long as the second column abuts against the sheet material, it can be confirmed that the positioning pin sleeve is in place. It is easy to operate, easy to assemble, and has a good positioning and assembly effect.

[0027] At the same time, when it is necessary to load materials through the loading device, it is only necessary to limit the second column of the sheet metal assembly structure in the positioning groove of the material shifting mechanism, and the second column can be pushed by the material shifting mechanism to drive the sheet metal assembly structure to move as a whole, and the sheet metal will not be deformed during the movement; furthermore, as long as the avoidance hole on the mounting plate is aligned with the pin on the carrier, the pin can be inserted through the avoidance hole into the fixing holes on all the sheets at one time, completing the one-time positioning and installation of the sheet metal, thereby improving the loading efficiency, reducing the loading time, and reducing the empty chance and labor cost.

[0028] Furthermore, when the sheet metal assembly structure of the present invention is used in a circuit board forming machine, when the debris generated by sheet metal processing is absorbed by the chip hood, since the second column is exposed on the top surface of the sheet metal, the moving chip hood may touch the positioning pin sleeve. However, since the second column is in contact with the sheet metal, even if the chip hood touches the positioning pin sleeve, the second column can limit the downward movement of the positioning pin sleeve, thereby ensuring the structural stability of the entire sheet metal assembly structure during the processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0030] Figure 1 It is a structural schematic diagram of a plate assembly structure provided by an embodiment of the utility model.

[0031] Figure 2 yes Figure 1 The structural schematic diagram of the AA section of the sheet metal assembly structure is shown.

[0032] Figure 3 yes Figure 2 The enlarged structural schematic diagram of part A of the sheet metal assembly structure is shown.

[0033] Figure 4 It is a structural schematic diagram of a positioning pin sleeve of a sheet metal assembly structure provided by an embodiment of the utility model.

[0034] Figure 5 yes Figure 4A schematic structural diagram of the CC section of the positioning pin sleeve is shown.

[0035] Figure 6 It is a structural schematic diagram of a feeding device provided in one embodiment of the utility model.

[0036] Figure 7 It is a structural schematic diagram of a material shifting mechanism of a material loading device provided in one embodiment of the utility model.

[0037] Figure 8 It is a structural schematic diagram of a circuit board forming machine provided by one embodiment of the utility model.

[0038] Fig. 9 It is a structural schematic diagram of a circuit board forming machine provided by another embodiment of the utility model.

[0039] The reference numerals in the specification are as follows:

[0040] 1. Sheet material assembly structure; 11. Positioning pin sleeve; 111. First column; 112. Second column; 113. Positioning hole; 114. Guide surface; 115. First guide slope; 12. Mounting plate; 121. Second pin hole; 13. Sheet material; 131. First pin hole; 132. Fixing hole; 2. Loading device; 21. Material shifting mechanism; 211. Positioning groove; 212. Limiting arm; 213. Clamping piece; 2131. Second guide slope; 3. Chip hood; 31. Third guide slope; 4. Brush; 5. Machine tool. DETAILED DESCRIPTION

[0041] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0042] It should be understood that the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", and "middle" are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation of the present invention.

[0043] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0044] like Figures 1 to 5 As shown, an embodiment of the utility model provides a sheet assembly structure 1, including a positioning pin sleeve 11 and a mounting plate 12 for placing a sheet 13. A first pin hole 131 and a fixing hole 132 are provided on the sheet 13, and a second pin hole 121 is provided on the mounting plate 12 at a position opposite to the first pin hole 131. An avoidance hole (not shown) is provided on the mounting plate 12 at a position opposite to the fixing hole 132. The mounting plate 12 is a plate-like structure made of cardboard or other materials. The sheet 13 includes a plate body to be cut and a frame arranged around the plate body to be cut. The fixing hole 132 and the first pin hole 131 are both arranged on the frame. Furthermore, the second pin hole 121 and the avoidance hole are also arranged on the mounting plate 12 at a position opposite to the frame. In this way, after the sheet 13 is processed, the sheet 13 will be divided into multiple small-sized circuit boards (the area corresponding to the circuit board is the area where the board to be cut is located) and a waste frame (the area corresponding to the waste frame is the area where the above-mentioned frame is located) by a milling machine. In this way, since the fixing hole 132 and the first pin hole 131 are both arranged on the frame, no unnecessary holes will appear on the cut circuit boards.

[0045] The positioning pin sleeve 11 includes a first column 111 and a second column 112 connected to the first column 111. The outer diameter of the second column 112 is greater than the outer diameter of the first column 111. After assembly, the sheet 13 and the mounting plate 12 are stacked, the first column 111 passes through the first pin hole 131 and is installed in the second pin hole 121, and the second column 112 abuts against the end surface of the sheet 13 away from the mounting plate 12, so as to position and assemble the sheet 13 on the mounting plate 12. That is, the second column 112 with a larger outer diameter and the first column 111 with a smaller outer diameter are connected and form a T shape. In this embodiment, only when the outer diameter of the second column 112 is larger than the outer diameter of the first column 111, after the first column 111 passes through the first pin hole 131 and is installed in the second pin hole 121, the end face of the second column 112 facing the plate can be fitted and abutted with the end face of the plate away from the mounting plate 12 to limit the installation of the positioning pin sleeve 11. At this time, the first column 111 is fully inserted into the first pin hole 131 and the second pin hole 121, which facilitates the installation of the positioning pin sleeve 11 and reduces the difficulty of installation. After the installation is completed, the second column 112 is completely exposed on the end face of the plate 13 away from the mounting plate 12, so that the second column 112 can be limited in the positioning groove 211 in the feeding device 2, and then the second column 112 drives the entire plate assembly structure 1 to move, so as to realize the conveying of the plate 13. It is understandable that after the sheet 13 is processed, the sheet 13 can be divided into panels. At this time, the sheet 13 placed on the mounting plate 12 can be cut into multiple finished circuit boards. After cutting, each sheet 13 will have a waste frame left. At this time, it is only necessary to remove the locating pin sleeve 11 from the first pin hole 131 and the second pin hole 121, and the multiple waste frames, a complete mounting plate 12 and two locating pin sleeves 11 can be disassembled, and the disassembled mounting plate 12 and the locating pin sleeves 11 can be reused, thereby reducing the processing cost of the circuit board.

[0046] In one embodiment, the first column 111 is connected with the first pin hole 131 and the second pin hole 121 by interference fit. It is understandable that the positioning pin sleeve 11 is fixedly connected with the sheet material 13 and the mounting plate 12 through the first column 111. In this embodiment, the first column 111 is connected with the first pin hole 131 and the second pin hole 121 by interference fit, so that the positioning pin sleeve 11 is fixed in the first pin hole 131 and the second pin hole 121, thereby making the sheet material 13 and the mounting plate 12 relatively fixed without relative movement. Further, as Figure 1 In the illustrated embodiment, a first pin hole 131 is respectively provided on two opposite sides of the sheet material 13, and the two first pin holes 131 are symmetrically arranged. Thus, two second pin holes 121 are also symmetrically arranged on the mounting plate 12, and the first pin hole 131 and the second pin hole 121 on the same side are coaxially arranged.

[0047] In one embodiment, if Figure 1As shown, the sheet metal assembly structure 1 includes a plurality of positioning pin sleeves 11, and the sheet metal assembly structure also has a second direction, at least two positioning pin sleeves 11 are respectively connected to the two opposite sides of the mounting plate 12 along the second direction, and are arranged along the second direction. In this embodiment, the second direction is Figure 1 From left to right, Figure 1 The sheet material assembly structure 1 shown in the figure includes a mounting plate 12 on which a plurality of sheet materials 13 stacked in sequence are placed, and two positioning pin sleeves 11. In this embodiment, the stability of the entire sheet material assembly structure 1 is further ensured by the fixed connection between the plurality of positioning pin sleeves 11 and the first pin holes 131 and the second pin holes 121 corresponding thereto.

[0048] In one embodiment, if Figure 5 As shown, the first pin hole 131 is coaxially arranged with the second pin hole 121. And the inner diameters of the first pin hole 131 and the second pin hole 121 are equal. That is, since the first pin hole 131 and the second pin hole 121 are respectively arranged on the sheet material 13 and the mounting plate 12, but are both used to connect with the first column 111 to fix the positioning pin sleeve 11, therefore, the first pin hole 131 and the second pin hole 121 are arranged as coaxial holes with equal inner diameters, which facilitates the processing and forming of the first pin hole 131 and the second pin hole 121. Moreover, the first pin hole 131 and the second pin hole 121 are coaxially arranged, so that after the first column 111 is installed in the first pin hole 131 and the second pin hole 121, the relative relationship between the sheet material 13 and the mounting plate 12 can be positioned more accurately. Specifically, after the first column 111 is installed in the first pin hole 131 and the second pin hole 121, all the fixing holes 132 on the sheet material 13 are coaxially aligned with the avoidance holes on the mounting plate 12 one by one, so as to facilitate the insertion of the pins on the carrier in the subsequent process to limit and fix the entire sheet material assembly structure 1, thereby facilitating the loading or processing of the sheet material 13.

[0049] Specifically, when the above-mentioned sheet material assembly structure 1 needs to be assembled, all the sheets 13 are first stacked on the mounting plate 12, and then the positioning pin sleeve 11 is sequentially passed through the first pin hole 131 and the second pin hole 121 to connect all the sheets 13 and the mounting plate 12 through the positioning pin sleeve 11, wherein the positioning pin sleeve 11 is interference-connected with the first pin hole 131 and the second pin hole 121, so that the positioning pin sleeve 11 can firmly put the sheets 13 and the mounting plate 12 together to form a structurally stable sheet material assembly structure 1.

[0050] In one embodiment, if Figure 4As shown, the outer diameter of the second cylinder is h1mm, and the outer diameter of the first cylinder is h2mm, satisfying: 1.3≤h1 / h2≤2, that is, the ratio between the outer diameter of the second cylinder 112 and the outer diameter of the first cylinder 111 is in the range of 1.3-2. In a further embodiment, the ratio between the outer diameter of the second cylinder 112 and the outer diameter of the first cylinder 111 (that is, h1 / h2) is in the range of 1.6-1.7. For example, the ratio between the outer diameter of the second cylinder 112 and the outer diameter of the first cylinder 111 is 1.64. In one embodiment, the outer diameter of the second cylinder 112 is 8.2mm, and the outer diameter of the first cylinder 111 is 5.0mm. It can be understood that the ratio between the outer diameter of the second column 112 and the outer diameter of the first column 111 is within the above-mentioned value range, so that the positioning pin sleeve 11 can meet the assembly strength requirements of the sheet metal assembly structure 1 and the structural strength requirements of the second column 112, while also making the cost of the positioning pin sleeve 11 lower.

[0051] In the above embodiment of the utility model, before loading, the first column 111 of the sheet assembly structure 1 is firstly installed in the second pin hole 121 of the mounting plate 12 through the first pin hole 131 of the sheet 13, and the second column 112 is in contact with the end face of the sheet 13 facing away from the mounting plate 12, so that all the sheets 13 are neatly assembled on the mounting plate 12 so that the two are stacked and combined into one, and at this time, all the fixing holes 132 on the sheet 13 are aligned with the avoidance holes on the mounting plate 12. The above assembly structure has a simple structure, and the positioning and assembly process is easy to operate, and the positioning and assembly effect is good. At the same time, when it is necessary to load the material through the loading device 2, it is only necessary to limit the second column 112 of the sheet assembly structure 1 in the positioning groove 211 of the material shifting mechanism 21, and the second column 112 can be pushed by the material shifting mechanism 21 and the sheet assembly structure 1 can be driven to move as a whole, and during the movement, the sheet 13 will not be deformed. Furthermore, as long as the avoidance hole on the mounting plate 12 is aligned with the pin on the carrier, the pin can be inserted into the fixing hole 132 on all the sheets 13 through the avoidance hole at one time, completing the one-time positioning and installation of the sheets 13, thereby improving the feeding efficiency, reducing the feeding time, and reducing the empty chance and labor cost. In addition, when the sheet assembly structure 1 of the utility model is used in a circuit board forming machine, when the debris generated by the processing of the sheet 13 is absorbed by the chip suction cover 3, since the second column 112 is exposed on the top surface of the sheet 13, at this time, the moving chip suction cover 3 may touch the positioning pin sleeve 11, but since the second column 112 is in contact with the sheet 13, even if the chip suction cover 3 touches the positioning pin sleeve 11, the second column 112 can also limit the downward movement of the positioning pin sleeve 11, thereby ensuring the structural stability of the entire sheet assembly structure 1 during the processing.

[0052] In one embodiment, if Figure 4 and Figure 5As shown, a first guiding inclined surface 115 is disposed at one end of the second column 112 facing away from the first column 111 , and the first guiding inclined surface 115 is disposed around the outer circumference of the second column 112 .

[0053] Understandably, in one aspect of this embodiment, Figure 6 and Figure 7 As shown, the material moving mechanism 21 of the feeding device 2 includes a clamping seat, a limiting arm 212 and a clamping member 213. The clamping seat is provided with a sliding hole, and the clamping member 213 is movably connected to the sliding hole. The limiting arm 212 is connected to one end of the clamping seat and is surrounded with the clamping member 213 to form a positioning groove 211. The clamping member 213 is provided with a clamping member 2131 adapted to the first guiding inclined surface 115. Therefore, if the sheet assembly structure 1 is moved along the second direction (in Figure 7 In the embodiment shown, the second direction is Figure 7 The direction from the clamping member 213 to the limiting arm 212 is shown in FIG. Figure 6 When the second column 112 is moved in the X direction as shown in the figure, the first guide slope 115 and the clamping piece 2131 are fitted with each other, so that the clamping piece 213 is lifted up and retracted into the sliding hole under the guiding action of the first guide slope 115 and the clamping piece 2131. After the second column 112 completely enters the position corresponding to the positioning groove 211, the clamping piece 213 will extend out of the sliding hole. At this time, a positioning groove 211 for limiting the second column 112 in the second direction is formed between the clamping piece 213 and the limiting arm 212. In this way, after the movement of the second column 112 in the second direction is limited by the positioning groove 211, the material moving mechanism 21 can push the second column 112 to reciprocate along the second direction through the positioning groove 211, thereby driving the entire sheet assembly structure 1 to move, so as to accurately install the position of the sheet assembly structure 1 and realize stable transportation of the sheet assembly structure 1.

[0054] In another aspect of the present embodiment, the chip hood 3 (described below) has a processing end, which is an end of the chip hood 3 close to the sheet material 13 during processing, and the chip hood 3 is provided with a third guiding slope 31 at the processing end. The first guiding slope 115 and the third guiding slope 31 are used to fit each other when the chip hood 3 moves to contact the second column 112, so that the chip hood 3 is lifted up under the guidance of the first guiding slope 115 and the third guiding slope 31, thereby avoiding the collision between the chip hood 3 and the second column 112.

[0055] In this embodiment, the main consideration is that when the brush 4 is worn to a length equal to or less than the minimum working length but there is no time to replace it, since the brush 4 contacts the surface of the sheet 13 for brushing during processing, if the chip hood 3 moves to the position of the second column 112, the distance between the chip hood 3 and the top surface of the sheet 13 is less than the minimum working length, and the processing end of the chip hood 3 will contact the second column 112. At this time, the third guide bevel 31 will fit with the first guide bevel 115. Therefore, when the chip hood 3 continues to move, the chip hood 3 will be lifted up under the guidance of the third guide bevel 31 and the first guide bevel 115, so that the bottom surface of the processing end of the chip hood 3 and the top surface of the second column 112 rub against each other, avoiding a head-on collision between the side wall of the processing end and the side wall of the second column 112, which may cause the risk of device damage.

[0056] In one embodiment, if Figure 5 As shown, the positioning pin sleeve 11 also includes a positioning hole 113 that passes through the second column 112 and the first column 111. The positioning hole 113 is coaxially arranged with the first column 111. The first column 111 is provided with a guide surface 114 at the opening position of the positioning hole 113. In this embodiment, the positioning hole 113 passes through the entire positioning pin sleeve 11, and the entire sheet assembly structure 1 can be positioned through the positioning hole 113. Specifically, the pins adapted to the fixing holes 132 and the positioning pins adapted to the positioning holes 113 provided on the carrier, during the process of loading through the loading device 2, limit the second column 112 of the sheet assembly structure 1 in the positioning groove 211 of the material shifting mechanism 21, and the material shifting mechanism 21 pushes the second column 112 and drives the sheet assembly structure 1 to move to the preset position as a whole, and then the sheet assembly structure 1 is dropped onto the carrier and the mounting plate 12 is made to fit the surface of the carrier, and the positioning pins are inserted into the corresponding positioning holes 113, and at the same time, each pin will also be inserted into the corresponding fixing holes 132 of the sheet 13 through the avoidance holes on the mounting plate 12 at one time, and then, through the adaptation and plugging of the positioning pins and the positioning holes 113, and the adaptation and plugging of the pins and the fixing holes 132, the sheet 13 can be accurately positioned and fixed, thereby improving the accuracy of the processing of the sheet 13.

[0057] In one embodiment, the avoidance hole is coaxially arranged with the fixing hole 132, and the inner diameter of the avoidance hole is larger than the inner diameter of the fixing hole 132. That is, since the avoidance hole is arranged so that the pin on the carrier can pass smoothly later so that the pin can be accurately inserted into the fixing hole 132 to connect with it, therefore, in this embodiment, the inner diameter of the avoidance hole is set to be larger than the inner diameter of the fixing hole 132, and the avoidance hole is coaxially arranged with the fixing hole 132, so that the pin will not interfere with the avoidance hole after being inserted into the avoidance hole, that is, the pin will not touch the inner side wall of the avoidance hole, that is, pass through the avoidance hole to connect with the fixing hole 132, so that the positioning and assembly of the pin and the fixing hole 132 can be made simpler and more accurate.

[0058] In one embodiment, if Figure 2 and Figure 3 As shown, the sheet metal assembly structure has a first direction, which is the direction in which the positioning pin sleeve 11 is inserted into the sheet metal 13. Specifically, the first direction refers to Figure 2 and Figure 6 In the first direction, the thickness of the mounting plate 12 is amm, the total thickness of the sheet material 13 is bmm, and the length of the first column 111 is cmm, which satisfies: 0≤a+bc≤2. Figure 3 In the embodiment shown, the first direction is the up-down direction of the sheet assembly structure. At this time, the thickness a of the mounting plate 12 refers to Figure 3 The height of the mounting plate 12 shown in FIG. 1 and the total thickness b of the sheet material 13 refer to Figure 3 The length c of the first column 111 is the sum of the heights of all the plates 13 shown in FIG. Figure 3 In the embodiment, a+bc is greater than or equal to 0. When a+bc is equal to 0, Figure 3As shown, the bottom end of the positioning pin sleeve 11 (i.e., the bottom end of the first column 111) will be flush with the bottom surface of the mounting plate 12. When a+bc is greater than 0, the first column 111 will be less than the total length of the first pin hole 131 and the second pin hole 121. Since it has been explained in the above embodiment that the first column 111 will pass through the first pin hole 131 and be installed in the second pin hole 121, the length of the first column 111 will also be greater than the length of the first pin hole 131 (i.e., the thickness of all the sheet materials 13). Therefore, at this time, the bottom end of the positioning pin sleeve 11 (i.e., the end face of the first column 111 away from the second column 112) will be higher than the bottom surface of the mounting plate 12 (the end face of the mounting plate 12 away from the sheet material 13) and lower than the top surface of the mounting plate 12. In this way, it can be ensured that after the locating pin sleeve 11 is inserted into the first pin hole 131 of the sheet material 13 and the second pin hole 121 of the mounting plate 12, the bottom end of the first column 111 will never be lower than the bottom surface of the mounting plate 12, thereby ensuring that after the sheet material assembly structure 1 is placed on the carrier, it will not touch the table surface of the carrier and cause damage, and avoid the situation where the sheet material assembly structure 1 cannot fit with the table surface. At the same time, the bottom end of the first column 111 will never be higher than the top surface of the mounting plate 12, so that the locating pin sleeve 11 can cover the mounting plate 12 without falling off the mounting plate 12. Furthermore, when a+bc is greater than 0, a+bc also needs to be less than or equal to 2. In this way, the distance between the end face of the first column 111 facing away from the second column 112 and the end face of the mounting plate 12 facing away from the sheet material 13 is less than 2 mm. After the first column 111 is installed in the second pin hole 121, it can be ensured that the first column 111 has sufficient length for connecting to the second pin hole 121, so as to further ensure the installation strength between the first column 111 and the second pin hole 121.

[0059] Further, in the first direction, the distance between the top of the mounting plate 12 and the bottom of the first column 111 is greater than or equal to 0.5 mm, so as to ensure that the first column 111 has sufficient length for connecting the second pin hole 121, so as to further ensure the mounting strength between the first column 111 and the second pin hole 121. In a specific embodiment, the thickness a of the mounting plate is 2.5 mm, a+bc=2 mm, that is, the distance between the top of the mounting plate 12 and the bottom of the first column 111 is equal to 0.5 mm.

[0060] Furthermore, if Figure 3 As shown, in the first direction, the thickness of the second column 112 is d mm, satisfying: 2≤d≤4. Figure 3 In the embodiment shown, the first direction is the up-down direction of the sheet assembly structure; at this time, the thickness d of the second column 112 refers to Figure 3The height of the second column 112 shown in FIG. 1 is as follows; the thickness of the second column 112 is set to satisfy 2≤d≤4, which not only allows the second column 112 to have sufficient structural strength to drive the overall movement of the sheet metal assembly structure 1, but also allows the second column 112 to have sufficient structural strength to limit the downward movement of the positioning pin sleeve 11 when the chip suction cover touches the positioning pin sleeve 11. At the same time, in actual applications, the brush 4 is usually replaced when it is worn to only 3mm, so the thickness d of the second column 112 is limited to the range of 2-4mm to avoid the second column 112 being too thick and causing collision with the chip suction cover 3 and causing damage.

[0061] like Figures 1 to 7 As shown, an embodiment of the present invention further provides a feeding device 2, comprising a material transfer mechanism 21 and the above-mentioned sheet material assembly structure 1. The feeding device 2 has a second direction (i.e. Figure 2 and Figure 6 The material moving mechanism 21 is provided with a positioning groove 211, which is used to limit the second column 112 and push the sheet assembly structure 1 to move along the second direction through the second column 112. It can be understood that the groove width of the positioning groove 211 is set to be greater than the outer diameter of the second column 112, so that the second column 112 can enter the positioning groove 211 and be limited in the positioning groove 211. Further, in the second direction, the difference between the groove width of the positioning groove 211 and the outer diameter of the second column 112 is 0.1-0.3mm. In a specific embodiment, the groove width of the positioning groove 211 is 0.2mm larger than the outer diameter of the second column 112.

[0062] In the above embodiment of the utility model, when it is necessary to load materials through the loading device 2, it is only necessary to limit the second column 112 of the sheet assembly structure 1 in the positioning groove 211 of the material shifting mechanism 21, and the second column 112 can be pushed by the material shifting mechanism 21 and drive the sheet assembly structure 1 to move along the second direction as a whole, and during the movement, the sheet 13 will not be deformed. Furthermore, as long as the avoidance hole on the mounting plate 12 is aligned with the pin on the carrier, the pin can be inserted through the avoidance hole into the fixing hole 132 on all the sheets 13 at one time, completing the one-time positioning and installation of the sheet 13, thereby improving the loading efficiency, reducing the loading time, and reducing the empty chance and labor cost.

[0063] like Figures 1 to 5 , Figures 8 to 9As shown, an embodiment of the utility model further provides a circuit board forming machine, including a machine tool 5, a spindle and a chip suction cover 3, one end of the spindle is connected to the machine tool 5, and the other end is connected to the chip suction cover 3. The circuit board forming machine also includes the above-mentioned sheet assembly structure 1, the sheet assembly structure 1 is movably connected to the machine tool 5, and can be moved to a position opposite to the chip suction cover 5, so that the chip suction cover 3 can absorb the debris generated during the processing of the sheet 13 by the machine tool 5. In the above embodiment of the utility model, when the debris generated by the processing of the sheet 13 is absorbed by the chip suction cover 3, since the second column 112 is exposed on the top surface of the sheet 13, at this time, the moving chip suction cover 3 may touch the positioning pin sleeve 11, but since the second column 112 is in contact with the sheet 13, even if the chip suction cover 3 touches the positioning pin sleeve 11, the second column 112 can also limit the positioning pin sleeve 11 from moving downward, thus ensuring the structural stability of the entire sheet assembly structure 1 during the processing.

[0064] Another embodiment of the present invention provides a circuit board forming machine, comprising a machine tool 5, a spindle and a chip suction cover 3, wherein one end of the spindle is connected to the machine tool 5, and the other end is connected to the chip suction cover 3. Fig. 9 As shown, the circuit board forming machine also includes the above-mentioned feeding device 2, which is arranged on the machine tool 5 and can transport the sheet assembly structure 1 to a position opposite to the chip suction cover 3. In this embodiment, the feeding device 2 can limit the second column 112 of the sheet assembly structure 1 in the positioning groove 211 of the material shifting mechanism 21, and then the second column 112 is pushed by the material shifting mechanism 21 to drive the sheet assembly structure 1 to move as a whole along the second direction to a position opposite to the chip suction cover 3, and during the movement, the sheet 13 will not be deformed.

[0065] In some embodiments, Figure 8As shown, the circuit board forming machine also includes a brush 4 installed on the chip suction cover 3, and the thickness of the second column 112 is less than or equal to the minimum working length set for the brush 4. The minimum working length refers to the minimum length of the brush 4 that is allowed to be used for processing. For example, the length of the new brush 4 is 6 mm (or longer, which can be set according to demand). When the board 13 is processed by the circuit board forming machine, the brush 4 is used to brush away the debris generated on the board 13 during the processing. At this time, due to the downward pressure on the brush 4 and the long-term friction on the board surface of the board 13, the brush 4 will be worn. In this way, when the circuit board forming machine detects that the brush 4 has reached the minimum allowed wear replacement length (for example, 3 mm) through the detection device, it is necessary to prompt the replacement of the brush 4. In this embodiment, in order to avoid interference between the top end of the second column 112 of the locating pin sleeve 11 and the bottom end of the chip hood 3 during processing (that is, it is necessary to avoid the second column 112 from scraping the chip hood 3), the thickness of the second column 112 is set to the above-mentioned minimum working length (that is, the minimum wear and replacement length). In this way, when the hair length of the brush 4 is greater than the minimum wear and replacement length, it means that the length of the brush 4 is also greater than the thickness of the second column 112. At this time, when the brush 4 is brushing the surface of the sheet material 13, the chip hood 3 will not contact the second column 112, and the brush 4 passes through the second column 112. Since the brush 4 is a flexible object, the second column 112 will pass through the inside of the brush 4 without scratching the brush 4. When the bristle length of the brush 4 is equal to the minimum working length, it means that the brush 4 is worn and reaches the minimum allowable wear replacement length (for example 2mm-4mm, preferably, the minimum wear replacement length is 3mm). At this time, it is prompted to replace the brush 4, so the damaged brush 4 will be replaced with a new brush 4 to continue working. Therefore, the chip suction hood 3 will not come into contact with the second column 112.

[0066] In the above embodiment, when the sheet assembly structure 1 of the utility model is used in a circuit board forming machine, the thickness of the second column 112 can be set to be smaller than the minimum working length of the brush 4. Furthermore, when the brush 4 normally brushes the debris generated by the surface processing of the sheet 13 and absorbs it through the chip suction hood 3, the soft brush 4 will not scratch the second column 112 exposed on the surface of the sheet 13 even if it sweeps over it. The thickness of the second column 112 is less than the minimum working length of the brush 4. Therefore, the exposed height of the second column 112 is not enough to make it contact the chip suction hood 3, and further, there is no interference between the positioning step and the chip suction hood 3, thereby ensuring the safety performance of the circuit board forming machine.

[0067] In one embodiment, the chip hood 3 has a processing end, which is an end of the chip hood 3 close to the sheet material 13 during processing. The chip hood 3 is provided with a third guiding slope 31 at the processing end. The first guiding slope 115 and the third guiding slope 31 are used to fit each other when the chip hood 3 moves to contact the second column 112, so that the chip hood 3 is lifted up under the guidance of the first guiding slope 115 and the third guiding slope 31, thereby avoiding the collision between the chip hood 3 and the second column 112.

[0068] In this embodiment, it is mainly considered that when the brush 4 is worn to the minimum working length but it is too late to replace it and the sheet material 13 is still being processed, the length of the brush 4 will be slightly less than the minimum working length. Therefore, in this embodiment, if Figure 8 As shown in the figure, a first guiding slope 115 is provided at the top edge of the second column 112, and a third guiding slope 31 is provided at the bottom edge of the chip suction cover 3. The types of the first guiding slope 115 and the third guiding slope 31 can be set according to requirements, such as R chamfer or C chamfer. In this embodiment, if the brush 4 is worn to a length less than the minimum working length and there is no time to replace it, at this time, since the brush 4 contacts and sweeps the surface of the sheet 13, if the chip hood 3 moves to the position of the second column 112, the distance between the bottom surface of the processed end of the chip hood 3 and the top surface of the sheet 13 is less than the minimum working length, the processed end of the chip hood 3 will contact the second column 112 and the third guide bevel 31 will fit with the first guide bevel 115. Then, when the chip hood 3 continues to move, the chip hood 3 will be lifted up under the guidance of the third guide bevel 31 and the first guide bevel 115, so that the bottom surface of the processed end of the chip hood 3 and the top surface of the second column 112 rub against each other, avoiding a head-on collision between the side wall of the processed end of the chip hood 3 and the side wall of the second column 112, which may cause the risk of device damage.

[0069] The above is only an embodiment of the sheet material assembly structure 1 of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sheet metal assembly structure, characterized in that: It includes a positioning pin sleeve and a mounting plate for placing a sheet material; the sheet material is provided with a first pin hole and a fixing hole, the mounting plate is provided with a second pin hole at a position opposite to the first pin hole; the mounting plate is provided with an avoidance hole at a position opposite to the fixing hole; The positioning pin sleeve includes a first column and a second column connected to the first column; the outer diameter of the second column is larger than the outer diameter of the first column; after assembly, the sheet material and the mounting plate are stacked, the first column passes through the first pin hole and is installed in the second pin hole, and the second column abuts against the end face of the sheet material facing away from the mounting plate.

2. The sheet metal assembly structure according to claim 1, characterized in that: A first guiding inclined surface is disposed at one end of the second column away from the first column, and the first guiding inclined surface is disposed around the outer circumference of the second column.

3. The sheet metal assembly structure according to claim 1, characterized in that: The first pin hole and the second pin hole are coaxially arranged; and the inner diameters of the first pin hole and the second pin hole are equal.

4. The sheet metal assembly structure according to claim 1, characterized in that: The first column is interference connected with the first pin hole and the second pin hole.

5. The sheet material assembly structure according to claim 1, characterized in that: The positioning pin sleeve also includes a positioning hole penetrating through the second column and the first column, and the positioning hole is coaxially arranged with the first column; the first column is provided with a guide surface at the opening position of the positioning hole.

6. The sheet material assembly structure according to claim 1, characterized in that: The avoidance hole is coaxially arranged with the fixing hole, and the inner diameter of the avoidance hole is larger than the inner diameter of the fixing hole.

7. The sheet material assembly structure according to claim 1, characterized in that: The sheet material assembly structure has a first direction, and the first direction is the direction in which the positioning pin sleeve is inserted into the sheet material; In the first direction, the thickness of the mounting plate is amm, the total thickness of the sheet material is bmm, the length of the first column is cmm, and the following condition is satisfied: 0≤a+bc≤2.

8. The sheet material assembly structure according to claim 7, characterized in that: In the first direction, a distance from the top of the mounting plate to the bottom of the first column is greater than or equal to 0.5 mm.

9. The sheet material assembly structure according to claim 7, characterized in that: In the first direction, the thickness of the second column is d mm, satisfying: 2≤d≤4.

10. The sheet material assembly structure according to claim 1, characterized in that: The outer diameter of the second column is h1 mm, and the outer diameter of the first column is h2 mm, satisfying: 1.3≤h1 / h2≤2.

11. The sheet material assembly structure according to claim 1, characterized in that: The sheet metal assembly structure comprises a plurality of positioning pin sleeves. The sheet metal assembly structure also has a second direction. At least two positioning pin sleeves are respectively connected to two opposite sides of the mounting plate along the second direction and are arranged along the second direction.

12. A feeding device, characterized in that: It comprises a material moving mechanism and a sheet material assembly structure as claimed in any one of claims 3 to 11; A first guiding slope is disposed at one end of the second column away from the first column, and the first guiding slope is disposed around the outer circumference of the second column; The feeding device has a second direction, and a positioning groove is provided on the material moving mechanism. The positioning groove is used to limit the second column and push the sheet assembly structure to move along the second direction through the second column.

13. The feeding device according to claim 12, characterized in that: In the second direction, the width of the positioning groove is greater than the outer diameter of the second column, and the difference between the width of the positioning groove and the outer diameter of the second column is 0.1-0.3 mm.

14. The feeding device according to claim 12, characterized in that: The material moving mechanism comprises a clamping seat, a limiting arm and a clamping member, wherein the clamping seat is provided with a sliding hole, the clamping member is movably connected to the sliding hole, the limiting arm is connected to one end of the clamping seat and is surrounded with the clamping member to form the positioning groove; the clamping member is provided with a second guiding inclined surface; The first guide slope and the second guide slope are used to fit together when the second column moves to contact the clamping piece, so that the clamping piece is lifted up and retracted into the sliding hole under the guidance of the first guide slope and the second guide slope, thereby allowing the second column to enter the positioning groove.

15. A circuit board forming machine, characterized in that: It comprises a machine tool, a spindle and a chip suction cover, wherein one end of the spindle is connected to the machine tool, and the other end is connected to the chip suction cover; The circuit board forming machine further comprises a sheet assembly structure as claimed in any one of claims 3 to 11, wherein the end of the second column away from the first column is provided with a first guiding slope, and the first guiding slope is arranged around the outer periphery of the second column; the sheet assembly structure is movably connected to the machine tool and can be moved to a position opposite to the chip suction cover; Alternatively, the circuit board forming machine further comprises a loading device as claimed in any one of claims 12 to 14, wherein the loading device is arranged on the machine tool and is capable of transporting the sheet assembly structure to a position opposite to the chip suction hood.

16. The circuit board forming machine according to claim 15, characterized in that: The circuit board forming machine also includes a brush installed on the chip suction cover, and the thickness of the second column is less than or equal to the minimum working length set for the brush.

17. The circuit board forming machine according to claim 15, characterized in that: The chip hood has a processing end, which is the end of the chip hood close to the sheet material during processing; the chip hood is provided with a third guide slope at the processing end; the first guide slope and the third guide slope are used to fit each other when the chip hood moves to contact the second column, so that the chip hood is lifted up under the guiding action of the first guide slope and the third guide slope, thereby avoiding collision between the chip hood and the second column.

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