Multi-layer board baking cart for PCB (printed circuit board) production

Abstract

The invention discloses a multi-layer board baking cart for PCB production, which comprises a seat board, the bottom surface of the seat board is provided with a wheel structure, and the surface of the seat board is provided with two protruding mounting columns which are arranged at intervals; the frame further comprises a plurality of layers of frames used for placing the PCBs, and the two opposite sides of all the frames are connected with the two opposite faces of the mounting column in an overturning mode; a preset distance is formed between the adjacent frames, and any frame has a first use state in which the included angle between the frame and the mounting column is 90 degrees and a second use state in which the included angle is smaller than 90 degrees; the frame and the mounting column are matched with each other through the rotating shaft, so that the frame and the mounting column have two use states, and a technician can sequentially switch the multiple layers of frames from the second use state to the first use state from the bottom to the top, so that the frame for operation has a relatively large operation space; and the PCB can be conveniently and quickly placed or taken out by a user.

Description

Technical Field

[0001] The invention relates to the field of PCB board production, and in particular to a multi-layer baking plate trolley for PCB board production. Background Art

[0002] PCB board, also known as circuit board, circuit boards such as printed circuit boards and flexible circuit boards are widely used in the field of electronics; the unloading process at the beginning of PCB board processing includes: high temperature baking → board separation → transportation → other process production. The purpose of high temperature baking is to eliminate the internal stress of the substrate itself, ensure the stability of the product, and avoid deformation or warping of the finished PCB; it can be seen that during the high temperature baking stage, the technicians have the need to transport the PCB boards to the oven for baking in batches, and to cool the PCB boards in the residual heat state in batches; in the prior art, it is usually achieved by a baking plate car, such as the utility model patent with Chinese application number CN201711419040.X, which discloses a PCB board baking turnover car, which places PCB boards in batches through a multi-layer rectangular frame structure, and can be directly put into the oven for baking or cooled after baking; however, it is found in use that the multi-layer rectangular frame of the equipment is relatively simple in coordination with the connector, and it is difficult to quickly place or remove the PCB board. Therefore, a baking plate car with a more reasonable structure is urgently needed to solve the deficiencies in the prior art. Summary of the invention

[0003] The present invention provides a solution to the technical problem that the multi-layer rectangular frame and the connecting parts of the grill plate cart in the prior art are relatively simple to match, making it difficult to quickly place or remove the PCB board.

[0004] To achieve the above-mentioned purpose, the present invention provides a multi-layer baking plate cart for PCB board production, including a seat plate, a bottom surface of which is provided with a wheel structure, and a surface of which is provided with two protruding and spaced-apart mounting columns; it also includes multiple layers of frames for placing PCB boards, and opposite sides of all the frames are flipped and connected to opposite sides of the mounting columns; there is a preset distance between adjacent frames, and any of the frames has a first use state in which the angle with the mounting column is 90°, and a second use state less than 90°.

[0005] As an improved solution of the present application, any of the frames is provided with a plurality of support rods, and the two ends of the plurality of groups of support rods are correspondingly connected to two opposite inner walls of the frame.

[0006] As an improved solution of the present application, multiple groups of support rods are arranged at intervals and centered on the center line of the frame to form a first support area and a second support area, and the spacing density of support rods in the first support area is less than the spacing density of support rods in the second support area; wherein the distance between the mounting column and the first support area is less than the distance between the mounting column and the second support.

[0007] As an improved solution of the present application, it also includes a plurality of groups of limiting devices arranged between one of the mounting columns and any of the frames, and the limiting devices are used to make the frame connected thereto stop when tilting.

[0008] As an improved solution of the present application, the limiting device includes a connecting member and a restoring member connected in sequence, the end of the connecting member away from the restoring member is connected to the mounting column, and the restoring member is detachably connected to a connecting ear fixed on the outer side of the corresponding frame.

[0009] As an improved solution of the present application, the return member is a spring or a cylinder structure.

[0010] As an improved solution of the present application, when the return member is a spring, the connecting member is provided with a threaded portion, and the threaded portion is connected to the thread of the mounting column in an adaptive manner.

[0011] As an improved solution of the present application, one end of the spring is fixedly connected to the mounting column, and the other end is connected to the connecting ear via a hook.

[0012] As an improvement to the present application, the two side corners of the frame are further equipped with corner pieces, one end of the corner piece is provided with a platform surface, and the other end is provided with a foot portion; the foot portion of the corner piece of the upper layer that is not the last layer and is adjacent to the upper layer abuts against the platform of the corner piece of the next layer.

[0013] As an improved solution of the present application, a push handle structure is also included, wherein two ends of the push handle structure are bent and commonly connected to a mounting column at the same end, and the middle portion of the push handle structure forms a gripping portion.

[0014] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention provides a multi-layer baking plate trolley for PCB board production, comprising a seat plate, a wheel structure being provided on the bottom surface of the seat plate, and two protruding and spaced-apart mounting columns being provided on the surface; it also comprises a multi-layer frame for placing PCB boards, and opposite sides of all frames are flipped and connected to opposite sides of the mounting columns; there is a preset distance between adjacent frames, and any frame has a first use state in which the angle with the mounting column is 90°, and a second use state in which the angle is less than 90°; the frame and the mounting column are matched with each other through a rotating shaft, so that the frame and the mounting column have two use states, and the technician can switch the multi-layer frame from the second use state to the first use state in sequence from the bottom to the top, so that the frame for operation has a larger working space, which is convenient for users to quickly place or remove PCB boards. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A perspective view of the present invention; Figure 2 For the present invention Figure 1 A local enlarged view of area A; Figure 3 For the present invention Figure 1 A partial enlarged view of area B.

[0017] The main component symbols are described as follows: 1. seat plate; 2. wheel structure; 3. mounting column; 4. frame; 41. support rod; 42. connecting ear; 5. Connecting piece; 51. Threaded part; 6. Spring piece; 61. Hook; 7. Angle piece; 71. Platform surface; 72. Standing foot; 8. Push handle structure. DETAILED DESCRIPTION

[0018] In order to more clearly illustrate the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0019] In the following description, the example details are given to provide a deeper understanding of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. It should be understood that the specific embodiments are only used to explain the present invention and are not used to limit the present invention.

[0020] It should be understood that when the terms "include" and / or "comprises" are used in this specification, they indicate the existence of the stated features, integers, steps, operations, elements or components, but do not exclude the existence or addition of one or more other features, integers, steps, operations, elements, components or combinations thereof.

[0021] In view of the technical problem that the multi-layer rectangular frame and the connecting piece 5 of the baking plate cart in the prior art are relatively simple to cooperate with, and it is difficult to quickly place or take out the PCB board, the present application provides a multi-layer baking plate cart for PCB board production. Figure 1 To Attachment Figure 3 , comprising a seat plate 1, a wheel structure 2 is provided on the bottom surface of the seat plate 1, and two protruding and spaced mounting posts 3 are provided on the surface; it also comprises a plurality of frames 4 for placing PCB boards, and opposite sides of all frames 4 are connected to opposite sides of the mounting posts 3 by flipping; there is a preset distance between adjacent frames 4, and any frame 4 has a first use state in which the angle between the frame 4 and the mounting post 3 is 90°, and a second use state in which the angle is less than 90°; The scheme of the application is further elaborated below in combination with specific usage situations: during the prevention process of the PCB board, the mounting column 3 and the frame 4 are flipped and matched, the frame 4 located at the bottom layer is in the first usage state, and the other frames 4 are in the second usage state, so that the frame 4 located at the bottom layer can obtain a larger working space, and the user can quickly place the PCB board. After the placement is completed, the frame 4 of the upper layer is switched from the second usage state to the first usage state, and the PCB board is placed again, and the above-mentioned board placement steps are repeated until the PCB board or the frame 4 of the cart is placed with a PCB board; then it is moved to the oven for baking through the wheel structure 2. After the baking is completed, batch operation is effectively realized.

[0022] It can be seen that the frame 4 and the mounting column 3 cooperate with each other through the rotating shaft, so that the frame 4 and the mounting column 3 have two usage states. The technician can switch the multi-layer frame 4 from the second usage state to the first usage state from the bottom to the top, so that the operating frame 4 has a larger working space, which is convenient for users to quickly place or remove the PCB board.

[0023] In order to provide stability for the placement of the PCB board, in this embodiment, any frame 4 is provided with multiple support rods 41, and the two ends of the multiple groups of support rods 41 are correspondingly connected to the two opposite inner walls of the frame 4; it is not difficult to understand that the PCB board is supported by the multiple support rods 41, and the PCB board has the ability to be stably placed.

[0024] It was found in actual use that when the cart is transported after being loaded with PCB boards, due to the large number of structural parts in this section of the mounting parts, the cart's weight balance is not uniform, resulting in difficulty in starting. Therefore, in this embodiment, multiple groups of support rods 41 are arranged at intervals and centered on the midline of the frame 4 to form a first support area and a second support area. The spacing density of the support rods 41 in the first support area is less than the spacing density of the support rods 41 in the second support area; wherein the distance between the mounting column 3 and the first support area is less than the distance between the mounting column 3 and the second support; through the above design, when fully loaded, the overall weight of the cart and the PCB boards is more uniform, which is convenient for technicians to move and transport, especially easier in the starting stage.

[0025] An important scheme also includes multiple groups of limit devices arranged between one mounting column 3 and any frame 4, and the limit devices are used to stop the frame 4 connected thereto when tilted; it is not difficult to understand that multiple limit devices are provided, corresponding to the mounting columns 3 and the frames 4 respectively, and the frames 4 can be tilted and stopped by the limit devices, for example, the bottom frame 4 can be maintained in the first use state through the limit devices, and the other frames 4 can be maintained in the second use state through the limit devices, maintaining a larger assembly opening, thereby facilitating the technicians to place or remove the PCB board; the specific limit device can be implemented by a positioning pin, a ratchet structure, a card structure or a column structure.

[0026] In the preferred scheme, the limiting device includes a connecting member and a restoring member connected in sequence, the end of the connecting member away from the restoring member is connected to the mounting column 3, and the restoring member is detachably connected to the connecting ear 42 fixed on the outer side of the corresponding frame 4; it is not difficult to understand that the restoring member can provide a suitable fastening force to make the frame 4 in a stable tilted state. In this embodiment, the restoring member forms a suitable gravitational force on the connecting ear 42 to fix its frame 4. When the multiple frames 4 are in the second state, it is necessary to increase the tightening force through the restoring member so that the multiple frames 4 can be in a more compact folding state, which is convenient for the frame material in the first state to operate; in the specific scheme, the restoring member is a spring 6 or a hydraulic rod structure.

[0027] In the preferred solution, when the return member is a spring 6, the connecting member is provided with a threaded portion 51, and the threaded portion 51 is adapted to be connected with the threaded hole of the mounting column 3; in the specific cooperation, the technician can control the screwing depth of the threaded hole and the threaded portion 51 so that the multi-layer frame 4 can all maintain the second use state and be stored together in a folded shape. At this time, the spring 6 provides a suitable elastic force to achieve a better tightening and folding effect; in a more preferred embodiment, with respect to the connection between the spring 6 and the frame 4, one end of the spring 6 is fixedly connected to the mounting column 3, and the other end is connected to the connecting ear 42 through a hook 61. The hook 61 can be used repeatedly, and the hook 61 in a closed state can form a stable connection relationship with the hole portion of the connecting ear 42, which is not easy to fall out, and can maintain the stability of the frame 4 in the second use state.

[0028] In a further solution, the corners of the frame 4 are further equipped with corner pieces 7, one end of the corner piece 7 is provided with a platform surface 71, and the other end is provided with a foot portion 72; the foot portion 72 of the corner piece 7 of the upper layer that is not the last layer and adjacent to the upper layer abuts on the platform of the corner piece 7 of the lower layer; it is not difficult to understand that when the multi-layer frame 4 is fully loaded with PCB boards, the multi-layer frame 4 is in the first use state, and the two adjacent corner pieces 7 in the middle overlap and fit each other, that is, the foot portion 72 of the corner piece 7 of one layer of the frame 4 abuts on the platform surface 71 of the corner piece 7 of the lower layer, so that the multi-layer frame 4 maintains a stable first use state at the same time; It is worth further explaining that the limit device and the connecting ear 42 structure mentioned in the present application are arranged on one side of the cart, and can also be arranged on both sides, preferably on both sides of the cart, which can make the working stability of the frame 4 of the cart better.

[0029] In this embodiment, a push handle structure 8 is also included. The two ends of the push handle structure 8 are bent and connected to the mounting column 3 at the same end. The middle part of the push handle structure 8 forms a gripping portion. The technician holds the gripping portion in the push handle structure 8 to transfer the PCB board or push the cart into the oven for processing.

[0030] The advantages of the present invention are: 1. The frame and the mounting column cooperate with each other through the rotating shaft, so that the frame and the mounting column have two use states. The technician can switch the multi-layer frame from the second use state to the first use state from the bottom to the top, so that the frame for operation has a larger working space, which is convenient for users to quickly place or remove the PCB board.

[0031] 2. The two side corners of the frame are also equipped with corner fittings, making the cart more stable when fully loaded with PCB boards.

[0032] 3. The support rod is divided into zones. When it is used with full PCB board, the weight distribution is more reasonable and it can be used more quickly.

[0033] The above disclosures are only several specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A multi-layer baking sheet trolley for PCB board production, characterized in that: It includes a seat plate, the bottom surface of which is provided with a wheel structure, and the surface of which is provided with two protruding and spaced mounting columns; it also includes a multi-layer frame for placing PCB boards, and the opposite sides of all the frames are flipped and connected to the opposite sides of the mounting columns; there is a preset distance between adjacent frames, and any frame has a first use state in which the angle with the mounting column is 90°, and a second use state less than 90°.

2. The multi-layer baking sheet cart for PCB board production according to claim 1 is characterized in that: Any of the frames is provided with a plurality of support rods, and two ends of a plurality of groups of the support rods are correspondingly connected to two opposite inner walls of the frame.

3. The multi-layer baking sheet cart for PCB board production according to claim 2 is characterized in that: Multiple groups of support rods are arranged at intervals and centered on the center line of the frame to form a first support area and a second support area, wherein the spacing density of support rods in the first support area is less than the spacing density of support rods in the second support area; wherein the distance between the mounting column and the first support area is less than the distance between the mounting column and the second support area.

4. The multi-layer baking sheet cart for PCB board production according to claim 1 is characterized in that: It also includes a plurality of groups of limiting devices arranged between one of the mounting columns and any of the frames, and the limiting devices are used to stop the frame connected thereto when tilting.

5. The multi-layer baking sheet trolley for PCB board production according to claim 4 is characterized in that: The limiting device comprises a connecting member and a restoring member which are connected in sequence, wherein one end of the connecting member away from the restoring member is connected to the mounting column, and the restoring member is detachably connected to a connecting ear fixedly arranged on the outer side of the corresponding frame.

6. The multi-layer baking sheet trolley for PCB board production according to claim 5 is characterized in that: The return member is a spring or a hydraulic rod structure.

7. The multi-layer baking sheet cart for PCB board production according to claim 6, characterized in that: When the return member is a spring, the connecting member is provided with a threaded portion, and the threaded portion is connected to the thread of the mounting column in an adaptive manner.

8. The multi-layer baking sheet trolley for PCB board production according to claim 7, characterized in that: One end of the spring is fixedly connected to the mounting post, and the other end is connected to the connecting ear via a hook.

9. The multi-layer baking sheet cart for PCB board production according to any one of claims 1 to 8, characterized in that: The two side corners of the frame are also equipped with corner pieces, one end of the corner piece is provided with a platform surface, and the other end is provided with a foot portion; the foot portion of the corner piece of the upper layer that is not the last layer and is adjacent to the upper layer abuts against the platform of the corner piece of the next layer.

10. The multi-layer baking sheet cart for PCB board production according to any one of claims 1 to 8, characterized in that: The utility model also comprises a push handle structure, the two ends of which are bent and connected to a mounting column at the same end, and the middle part of the push handle structure forms a gripping part.

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