Chamfering device for circuit board

Abstract

The utility model provides a chamfering device for a circuit board, which comprises a bottom plate and a support component slidably mounted on the bottom plate, a trimming mechanism is slidably mounted on the support component, a first driving device for driving the support component to move is mounted on the bottom plate, and a second driving device for driving the support component to move is mounted on the bottom plate. A second driving device used for driving the trimming mechanism to move is installed on the supporting assembly, the device further comprises a positioning plate and a fixing assembly, and the positioning plate is detachably connected with the bottom plate; a limiting ring groove is formed in the side face of the positioning plate, a positioning bearing is rotationally installed at the bottom end of the trimming mechanism, the positioning bearing is used for positioning and guiding the trimming mechanism after being matched with the limiting ring groove, and first round corners are arranged at the four corners of the positioning plate; the chamfering device can solve the problem that in the prior art, no limiting mechanism used for guiding the cutting mechanism is arranged, and the stability and smoothness of chamfering are affected.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board processing equipment, in particular to a chamfering device for circuit boards. Background Art

[0002] Printed circuit boards, also known as printed circuit boards, are important electronic components. During the PCB manufacturing process, one step is to cut the entire PCB sheet. Typically, all four corners of the PCB are right angles after cutting. To prevent these right angles from piercing packaging or injuring people, a chamfering device is often used to round the corners of the PCB.

[0003] Existing first-rounded corner chamfering devices generally include a workbench and a chamfering cutting mechanism. During the first rounded corner chamfering process, the chamfering cutting mechanism requires an operator to manually press the upper end surface of the printed circuit board to ensure that the printed circuit board does not shift during the first rounded corner chamfering process. This method increases the labor intensity of the operator. To solve the problems in the prior art, the utility model with publication number CN213794321U discloses a chamfering device for PCB circuit board processing (hereinafter referred to as prior art 1), including a workbench and a chamfering cutting mechanism. The chamfering cutting mechanism is mounted on the workbench. A support plate for placing the PCB circuit board is mounted on the top of the workbench. The chamfering cutting mechanism is covered with a protective shell. The protective shell is provided with an opening for inserting the PCB circuit board. A pressing assembly is provided above the support plate. The pressing assembly includes a fixing plate, a pressing block, and a first cylinder. The fixing plate is fixedly connected to the protective shell. The first cylinder passes through the fixing plate and is connected to the pressing block. The first cylinder is connected to the fixing plate for sliding back and forth.

[0004] Although the prior art 1 can compress the circuit board by setting a pressing member to prevent the circuit board from shifting during the chamfering of the first rounded corner, the prior art 1 does not have a limiting mechanism for guiding the cutting mechanism, which affects the stability and smoothness of the chamfering. Utility Model Content

[0005] The purpose of the utility model is to provide a chamfering device for circuit boards, which, in actual use, can solve the problem in the prior art that there is no limiting mechanism for guiding the cutting mechanism, which affects the stability and smoothness of the chamfering.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A chamfering device for a circuit board comprises a base plate and a support assembly slidably mounted on the base plate, a trimming mechanism slidably mounted on the support assembly, a first drive device mounted on the base plate for driving the support assembly to move, a second drive device mounted on the support assembly for driving the trimming mechanism to move, a positioning plate and a fixing assembly, the positioning plate being detachably connected to the base plate;

[0008] A limiting ring groove is provided on the side of the positioning plate, and a positioning bearing is rotatably installed on the bottom end of the trimming mechanism. The positioning bearing is used to position and guide the trimming mechanism after cooperating with the limiting ring groove. The four corners of the positioning plate are provided with first rounded corners, and the four corners of the limiting ring groove are provided with second rounded corners;

[0009] The fixing assembly is detachably mounted on the positioning plate and is used to fix the circuit board.

[0010] Preferably, a first slide rail is installed on the base plate, and the support assembly is slidably installed on the base plate via the first slide rail. The first driving device is installed on the base plate and is used to drive the support assembly to move forward and backward.

[0011] Preferably, the support assembly includes a support frame and a second slide rail installed on the support frame, the trimming mechanism is slidably installed on the second slide rail, the second drive device is installed on the support frame and is used to drive the trimming mechanism to move left and right, and the support frame is slidably installed on the base plate through the first slide rail.

[0012] Preferably, the trimming mechanism includes a drive motor and a trimming knife, the drive motor is slidably mounted on the second slide rail, the second drive device is used to drive the drive motor to move left and right, the trimming knife is coaxially connected to the output end of the drive motor, and the positioning bearing is coaxially rotatably mounted on the bottom end of the trimming knife.

[0013] Preferably, a mounting frame is slidably mounted on the second slide rail, a third slide rail is mounted on the mounting frame, the drive motor is slidably mounted on the third slide rail, and a third drive device for driving the drive motor to move up and down is mounted on the mounting frame.

[0014] Preferably, a baffle is installed on the bottom plate.

[0015] Preferably, the fixing assembly includes a fixing portion and a fixing bolt, the fixing portion is provided with a fixing groove, and the fixing bolt is threadedly connected to the fixing portion.

[0016] Preferably, a buffer pad is provided on the surface of the fixing groove that is in contact with the circuit board.

[0017] Preferably, a rubber block is rotatably mounted on one end of the fixing bolt that contacts the positioning plate.

[0018] Preferably, a dust suction port is provided on the baffle, and the dust suction port is used to be connected to a dust suction device.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] In the present invention, after the circuit board to be processed is mounted on the positioning plate, the four side surfaces of the circuit board are coplanar with the four side surfaces of the positioning plate, and the circuit board can be fixed by the fixing assembly installed on the positioning plate, thereby preventing the circuit board from shifting during the processing;

[0021] The four corners of the positioning plate are provided with first rounded corners, and after the circuit board is installed on the positioning plate, a stepped structure is formed between the four corners of the circuit board and the first rounded corners; after the positioning bearing contacts the limiting ring groove, the limiting ring groove can limit and guide the positioning bearing; when the support assembly moves along the side of the positioning plate under the drive of the first driving device and the second driving device, the trimming mechanism installed on the support assembly chamfers the four corners of the circuit board; the positioning bearing is always in contact with the limiting ring groove in the process of moving with the trimming mechanism, which can enable the trimming mechanism to move stably during the trimming process to achieve better trimming effect, and the trimming mechanism can stably chamfer the four corners of the circuit board under the limitation and guidance of the limiting first slide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a three-dimensional diagram of the present utility model.

[0024] Figure 2 Schematic diagram of the new structure of this experiment.

[0025] Figure 3 For this utility model Figure 2 A partial enlarged view of point A in the middle.

[0026] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0027] 101-base plate, 102-support assembly, 103-trimming mechanism, 104-first driving device, 105-second driving device, 106-positioning plate, 107-fixing assembly, 108-limiting ring groove, 109-positioning bearing, 110-first fillet, 111-first slide rail, 112-support frame, 113-second slide rail, 114-dust suction port, 115-drive motor, 116-trimming knife, 117-mounting frame, 118-third slide rail, 119-third driving device, 120-baffle, 121-fixing part, 122-fixing bolt, 123-buffer pad, 124-rubber block. DETAILED DESCRIPTION

[0028] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0029] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention 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 embodiments of the present invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0031] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0032] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] The disclosure below provides many different embodiments or examples for implementing different structures of the embodiments of the present invention. In order to simplify the disclosure of the embodiments of the present invention, the components and settings of specific examples are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. In addition, the embodiments of the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0034] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0035] See Figure 1-Figure 3 This embodiment discloses a chamfering device for a circuit board, comprising a base plate 101 and a support assembly 102 slidably mounted on the base plate 101, a trimming mechanism 103 slidably mounted on the support assembly 102, a first driving device 104 mounted on the base plate 101 for driving the support assembly 102 to move, a second driving device 105 mounted on the support assembly 102 for driving the trimming mechanism 103 to move, a positioning plate 106 and a fixing assembly 107, the positioning plate 106 being detachably connected to the base plate 101;

[0036] A limiting annular groove 108 is provided on the upper side of the positioning plate 106, and a positioning bearing 109 is rotatably mounted on the bottom end of the trimming mechanism 103. The positioning bearing 109 is used to position and guide the trimming mechanism 103 after cooperating with the limiting annular groove 108. The four corners of the positioning plate 106 are provided with first rounded corners 110, and the four corners of the limiting annular groove 108 are provided with second rounded corners.

[0037] The fixing assembly 107 is detachably mounted on the positioning plate 106 and is used to fix the circuit board.

[0038] In this embodiment, after the circuit board to be processed is mounted on the positioning plate 106, the four side surfaces of the circuit board are coplanar with the four side surfaces of the positioning plate 106, and the circuit board can be fixed by a fixing component 107 installed on the positioning plate 106, thereby preventing the circuit board from shifting during the processing process; the four corners of the positioning plate 106 are provided with a first rounded corner 110, and after the circuit board is mounted on the positioning plate 106, a stepped structure is formed between the four corners of the circuit board and the first rounded corner 110; the second rounded corner is colinear with the center of the first rounded corner 110; after the positioning bearing 109 contacts the limiting ring groove 108, the limiting The positioning ring groove 108 can limit and guide the positioning bearing 109; when the support assembly 102 moves along the side of the positioning plate 106 under the drive of the first drive device 104 and the second drive device 105, the trimming mechanism 103 installed on the support assembly 102 chamfers the four corners of the circuit board; the positioning bearing 109 is always in contact with the positioning ring groove 108 during the movement of the trimming mechanism 103, which can enable the trimming mechanism 103 to move stably during the trimming process to achieve better trimming effect. The trimming mechanism 103 can stably chamfer the four corners of the circuit board under the limitation and guidance of the limiting first slide rail 111.

[0039] In some embodiments, a first slide rail 111 is mounted on the base plate 101, and the support assembly 102 is slidably mounted on the base plate 101 via the first slide rail 111. A first drive device 104 is mounted on the base plate 101 and is used to drive the support assembly 102 to move forward and backward. The first slide rail 111 is used to limit and guide the support assembly 102, allowing the support assembly 102 to move stably under the drive of the first drive device 104. In this embodiment, the first drive device 104 is a conventional telescopic mechanism in the prior art, and its structure and function will not be elaborated on here.

[0040] In some embodiments, the support assembly 102 includes a support frame 112 and a second slide rail 113 mounted on the support frame 112. The trimming mechanism 103 is slidably mounted on the second slide rail 113. The second drive device 105 is mounted on the support frame 112 and is used to drive the trimming mechanism 103 to move left and right. The support frame 112 is slidably mounted on the base plate 101 via the first slide rail 111. The second slide rail 113 can limit and guide the trimming mechanism 103, allowing it to slide stably in the horizontal direction under the drive of the second drive device 105. In this embodiment, the second drive device 105 is a conventional telescopic mechanism in the prior art, and its structure and function will not be elaborated on here.

[0041] In some embodiments, the trimming mechanism 103 includes a drive motor 115 and a trimming knife 116. The drive motor 115 is slidably mounted on the second slide rail 113. The second drive device 105 is used to drive the drive motor 115 to move left and right. The trimming knife 116 is coaxially connected to the output end of the drive motor 115, and the positioning bearing 109 is coaxially rotatably mounted on the bottom end of the trimming knife 116. The second slide rail 113 can limit and guide the drive motor 115, so that the drive motor 115 can slide stably in the horizontal direction under the drive of the second drive device 105; the trimming knife 116 is coaxially arranged with the positioning bearing 109 and the diameter of the trimming knife 119 is smaller than the diameter of the positioning bearing 109, and the sum of the distance between the first fillet 110 and the second fillet and the radius of the trimming knife 119 is equal to the radius of the positioning bearing, so that when the positioning bearing 109 contacts the limiting ring groove 108, the trimming knife 116 contacts the side of the positioning plate 106 and the circuit board.

[0042] In some embodiments, a mounting bracket 117 is slidably mounted on the second slide rail 113, a third slide rail 118 is mounted on the mounting bracket 117, the drive motor 115 is slidably mounted on the third slide rail 118, and a third drive device 119 for driving the drive motor 115 to move up and down is mounted on the mounting bracket 117. The second slide rail 113 limits and guides the mounting bracket 117, so that the mounting bracket 117 can stably slide in the horizontal direction under the drive of the second drive device 105; the third slide rail 118 limits and guides the drive motor 115, so that the drive motor 115 can move vertically up and down under the drive of the third drive device 119; in this embodiment, the third drive device 119 is a conventional telescopic mechanism in the prior art, and its structure and function will not be elaborated here.

[0043] In some embodiments, a baffle 120 is installed on the bottom plate 101. The baffle 120 can block the debris that is splashed when the trimming knife 116 is chamfering the circuit board.

[0044] In some embodiments, the fixing assembly 107 includes a fixing portion 121 and a fixing bolt 122. The fixing portion 121 is provided with a fixing slot, and the fixing bolt 122 is threadedly connected to the fixing portion 121. The fixing bolt 122 is threadedly connected to the bottom end of the fixing portion 121. One end of the fixing bolt 122 passes through the fixing portion 121 and extends into the fixing slot. The fixing portion 121 can fix the circuit board mounted on the positioning plate 106 through the cooperation of the fixing bolt 122 and the fixing slot.

[0045] In some embodiments, a buffer pad 123 is provided on the surface of the fixing groove that contacts the circuit board. The buffer pad 123 can prevent the fixing portion 121 from abrading the circuit board when the fixing bolt 122 drives the fixing portion 121 to press the circuit board against the positioning plate 106. The buffer pad 123 is made of rubber material.

[0046] In some embodiments, a rubber block 124 is rotatably mounted on one end of the fixing bolt 122 that contacts the positioning plate 106. The rotatable block is rotatably mounted on the fixing bolt 122 via a bearing and is made of rubber. The provision of the rotatable block prevents wear on the positioning plate 106 during rotation of the fixing bolt 122.

[0047] In some embodiments, the baffle 120 is provided with a dust collection port 114, which is connected to a dust collection device. The dust collection device collects debris that is splashed during the chamfering of the circuit board by the trimming blade 116 through the dust collection port 114, thereby preventing the debris from contaminating the workspace. In this embodiment, the dust collection device is a conventional suction device in the prior art, and its structure and function will not be fully elaborated here.

[0048] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A chamfering device for a circuit board, comprising a base plate (101) and a support assembly (102) slidably mounted on the base plate (101), a trimming mechanism (103) slidably mounted on the support assembly (102), a first driving device (104) for driving the support assembly (102) to move mounted on the base plate (101), and a second driving device (105) for driving the trimming mechanism (103) to move mounted on the support assembly (102), characterized in that: It also includes a positioning plate (106) and a fixing assembly (107), wherein the positioning plate (106) is detachably connected to the bottom plate (101); A limiting ring groove (108) is provided on the side of the positioning plate (106), and a positioning bearing (109) is rotatably installed on the bottom end of the trimming mechanism (103). The positioning bearing (109) is used to position and guide the trimming mechanism (103) after cooperating with the limiting ring groove (108). The four corners of the positioning plate (106) are provided with first rounded corners (110), and the four corners of the limiting ring groove (108) are provided with second rounded corners. The fixing assembly (107) is detachably mounted on the positioning plate (106) and is used to fix the circuit board.

2. A chamfering device for a circuit board according to claim 1, characterized in that: A first slide rail (111) is installed on the base plate (101), and the support assembly (102) is slidably installed on the base plate (101) via the first slide rail (111). A first driving device (104) is installed on the base plate (101) and is used to drive the support assembly (102) to move forward and backward.

3. The chamfering device for a circuit board according to claim 2, characterized in that: The support assembly (102) comprises a support frame (112) and a second slide rail (113) mounted on the support frame (112); the trimming mechanism (103) is slidably mounted on the second slide rail (113); the second driving device (105) is mounted on the support frame (112) and is used to drive the trimming mechanism (103) to move left and right; and the support frame (112) is slidably mounted on the base plate (101) via the first slide rail (111).

4. The chamfering device for a circuit board according to claim 3, characterized in that: The trimming mechanism (103) includes a driving motor (115) and a trimming knife (116), wherein the driving motor (115) is slidably mounted on the second slide rail (113), and the second driving device (105) is used to drive the driving motor (115) to move left and right. The trimming knife (116) is coaxially connected to the output end of the driving motor (115), and the positioning bearing (109) is coaxially rotatably mounted on the bottom end of the trimming knife (116).

5. The chamfering device for a circuit board according to claim 4, characterized in that: A mounting frame (117) is slidably mounted on the second slide rail (113), a third slide rail (118) is mounted on the mounting frame (117), the drive motor (115) is slidably mounted on the third slide rail (118), and a third drive device (119) for driving the drive motor (115) to move up and down is mounted on the mounting frame (117).

6. The chamfering device for a circuit board according to claim 1, characterized in that: A baffle (120) is installed on the bottom plate (101).

7. The chamfering device for a circuit board according to claim 1, characterized in that: The fixing assembly (107) comprises a fixing portion (121) and a fixing bolt (122); a fixing groove is provided on the fixing portion (121); and the fixing bolt (122) is threadedly connected to the fixing portion (121).

8. The chamfering device for a circuit board according to claim 7, characterized in that: A buffer pad (123) is provided on a surface of the fixing groove that is used for contacting the circuit board.

9. The chamfering device for a circuit board according to claim 7, characterized in that: The fixing bolt (122) is used to have a rubber block (124) rotatably mounted on one end thereof that contacts the positioning plate (106).

10. The chamfering device for a circuit board according to claim 6, characterized in that: A dust suction port (114) is provided on the baffle (120), and the dust suction port (114) is used to be connected to a dust suction device.

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