Horizontal line conveying jig for preventing PTFE plate from being crushed

Abstract

The utility model discloses a horizontal line conveying fixture of preventing PTFE board material pressure injury, including bottom plate and top cover, one side of bottom plate with same side rotation connection of top cover, bottom plate includes first rectangle border, the top middle concave formation of one -sided opening lower limit slot of bottom plate, top cover includes second rectangle border, the bottom middle of second rectangle border is concave formation and forms one -sided opening upper limit slot, the opening direction of upper limit slot with the opening direction of lower limit slot is identical, when top cover overturns and overlaps with bottom plate, upper limit slot and lower limit slot form the placement limit slot for placing PTFE board material.

Description

Technical Field

[0001] This utility model relates to the field of PCB manufacturing technology, specifically to a horizontal conveying fixture for preventing PTFE sheet material from being crushed. Background Technology

[0002] Polytetrafluoroethylene (PTFE) is widely used as a special substrate in the manufacturing of printed circuit boards (PCBs). However, this material has significant limitations in its physical properties: its substrate is soft and has weak resistance to external forces. When subjected to external forces such as impacts and compression, it is prone to shape changes, which directly affects the structural stability and performance of the product, posing a potential threat to the quality of PCB products.

[0003] In current PCB production lines, horizontal line processing is an indispensable and crucial step, requiring multiple continuous processing steps on the PCB board. Specifically, the horizontal line transport system uses synchronously rotating upper and lower rollers to transport the board—the board moves forward as the rollers rotate, gripped by the rollers. However, when producing PTFE boards, this horizontal line transport method significantly contradicts the easily deformable nature of PTFE material. Due to its soft texture and poor resistance to compression, the clamping force applied by the upper and lower rollers during transport directly acts on the board surface, causing indentations due to pressure. These indentations not only damage the PCB board's appearance but can also affect its electrical properties and structural strength, ultimately resulting in a large number of defective products and severely restricting the production yield and manufacturing efficiency of PTFE-based PCB products. Utility Model Content

[0004] In order to overcome the problem that PTFE sheets are crushed by the upper and lower rollers during the horizontal processing stage in the existing technology, resulting in defective products, this utility model provides a horizontal conveying fixture to prevent PTFE sheets from being crushed.

[0005] The technical solution of this utility model is as follows:

[0006] A horizontal conveying fixture for preventing PTFE sheet damage includes a base plate and a top cover. One side of the base plate is rotatably connected to the same side of the top cover. The base plate includes a first rectangular frame, the top center of which is recessed to form a lower limiting groove with a single-sided opening. The top cover includes a second rectangular frame, the bottom center of which is recessed to form an upper limiting groove with a single-sided opening. The opening direction of the upper limiting groove is consistent with the opening direction of the lower limiting groove.

[0007] When the top cover is flipped to overlap with the bottom plate, the upper limit groove and the lower limit groove form a placement limiting groove for placing PTFE sheets.

[0008] As a preferred embodiment of this utility model, a first hollow area is provided in the middle of the bottom of the lower limiting groove.

[0009] As a preferred embodiment of this utility model, the thickness of the first perforated area is 2mm.

[0010] As a preferred embodiment of this utility model, a second hollow area is provided in the middle of the bottom of the upper limit groove.

[0011] As a preferred embodiment of this utility model, the thickness of the second perforated area is 2mm.

[0012] As a preferred embodiment of this utility model, one side of the base plate is rotatably connected to the same side of the top cover via a connecting device.

[0013] In a preferred embodiment of this utility model, the connecting device is a hinge.

[0014] As a preferred embodiment of this utility model, the base plate and the top cover are arranged symmetrically on the top and bottom.

[0015] As a preferred embodiment of this utility model, the thickness of both the first rectangular frame and the second rectangular frame is 4mm.

[0016] In a preferred embodiment of this utility model, the depth of both the upper limit groove and the lower limit groove is 2mm.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This utility model provides a horizontal conveying fixture for preventing PTFE sheets from being crushed. By placing a limiting groove in the fixture, the PTFE sheet can be placed in the fixture and then the fixture is used to pass through the horizontal line. The bottom plate and top cover of the fixture bear the pressure of the upper and lower rollers, avoiding direct action of the rollers on the PTFE sheet. This ensures the integrity of the sheet's appearance and electrical performance, improves the production yield of PTFE substrate PCB products, and effectively solves the problem of dents caused by the pressure of the upper and lower rollers on the PTFE sheet during the horizontal line processing, resulting in a large number of defective products. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a horizontal conveying fixture for preventing PTFE sheet damage in an embodiment of the present invention in the open state;

[0021] Figure 2 This is a cross-sectional view of a horizontal conveying fixture for preventing PTFE sheet damage in an embodiment of the present invention in its open state;

[0022] Figure 3 This is a cross-sectional view of a horizontal conveying fixture for preventing damage to PTFE sheets in a closed state, according to one embodiment of the present invention.

[0023] In the diagram,

[0024] 1. Base plate; 11. First rectangular frame; 111. Lower limit groove; 112. First open area; 2. Top cover; 21. Second rectangular frame; 211. Upper limit groove; 212. Second open area; 3. Connecting device. Detailed Implementation

[0025] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. It is also declared that the embodiments described below are only for explaining this utility model and are not intended to limit this utility model.

[0026] It should be noted that the terms "installation," "setting," "connection," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly defined. Indications of orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used in the application's product, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features.

[0027] Please see Figures 1 to 3 This utility model provides a horizontal conveying fixture to prevent PTFE sheets from being crushed, including a base plate 1 and a top cover 2. One side of the base plate 1 is rotatably connected to the same side of the top cover 2, allowing the top cover 2 to be easily flipped open and closed. The base plate 1 includes a first rectangular frame 11, with a recessed lower limiting groove 111 at the top center forming a single-sided opening. The top cover 2 includes a second rectangular frame 21, with a recessed upper upper limiting groove 211 at the bottom center forming a single-sided opening. The opening direction of the upper limiting groove 211 is consistent with the opening direction of the lower limiting groove 111. When the top cover 2 is flipped to overlap with the base plate 1, i.e., when the top cover 2 is flipped to close, the upper limiting groove 211 and the lower limiting groove 111 form a placement limiting groove for placing PTFE sheets. When placing PTFE sheets, they can be placed directly into the opening of the placement limiting groove, or the top cover 2 can be flipped open to place the PTFE sheet into the lower limiting groove 111 of the bottom plate 1 first, and then the top cover 2 can be flipped closed. When removing PTFE sheets, simply flip the top cover 2 to remove them. The operation is simple and quick, improving the convenience and efficiency of production operations.

[0028] During use, the PTFE sheet is placed in the placement and limiting groove of the fixture, and then the fixture is used to pass through the horizontal line. The bottom plate 1 and top cover 2 of the fixture bear the pressure of the upper and lower rollers, avoiding the rollers from acting directly on the PTFE sheet. This ensures the integrity of the sheet's appearance and electrical performance, improves the production yield of PTFE substrate PCB products, and effectively solves the problem of dents caused by the upper and lower rollers squeezing the PTFE sheet during the horizontal line processing, which leads to a large number of defective products.

[0029] Please see Figures 1 to 3In this embodiment, a first hollow area 112 is provided in the middle of the bottom of the lower limiting groove 111, and a second hollow area 212 is provided in the middle of the bottom of the upper limiting groove 211. The first hollow area 112 and the second hollow area 212 are used to allow the chemical solution for the horizontal line to contact the PTFE board. During the horizontal line processing, the chemical solution can smoothly contact the upper and lower surfaces of the PTFE board through the first hollow area 112 and the second hollow area 212, ensuring that the board can undergo normal chemical processing, such as cleaning and etching, without affecting the PCB board production process due to the presence of fixtures, thus balancing the needs of board protection and process processing.

[0030] In one embodiment, the thickness of both the first perforated region 112 and the second perforated region 212 is 2mm. This 2mm thickness provides sufficient space for the horizontal line treatment solution to penetrate the fixture and contact the PTFE substrate. In the PCB horizontal line processing, the treatment solution needs to fully contact the substrate surface to complete operations such as cleaning, etching, and electroplating. The 2mm thickness avoids restricting the flow and penetration of the treatment solution due to its thinness, preventing some areas from being reached and affecting the processing effect; it also avoids excessively weakening the structural strength of the base plate 1 and the top cover 2. The fixture maintains good stability under the pressure of the upper and lower rollers, is not easily deformed or damaged, and thus continuously and effectively protects the PTFE substrate, extending the service life of the fixture.

[0031] In one embodiment, the thickness of both the first rectangular frame 11 and the second rectangular frame 21 is 4mm, and the depth of both the upper limit groove 211 and the lower limit groove 111 is 2mm. The 4mm thickness provides sufficient strength and rigidity for both the first and second rectangular frames 11 and 21. During horizontal transport, the fixture needs to withstand the pressure from the upper and lower rollers, as well as vibrations and impacts during transport. The thicker frame effectively resists these external forces, preventing deformation or damage to the fixture and ensuring stable transport of the PTFE sheet, thus guaranteeing the continuity and stability of the production process. The 2mm groove depth provides suitable positioning and fixing space for the PTFE sheet. When the sheet is placed in the limiting groove, this depth design ensures that the sheet will not easily move horizontally, while also preventing difficulties in inserting and removing the sheet due to excessive depth.

[0032] In addition, the length and width dimensions of the first rectangular frame 11, the second rectangular frame 21, the lower limit groove 111 and the upper limit groove 211 are designed according to the size of the PTFE sheet, which can make the fixture perfectly fit the PTFE sheet, ensuring that the sheet is placed accurately in the fixture without any offset or shaking, thus improving the positioning accuracy and reliability.

[0033] Please see Figures 1 to 3In one embodiment, one side of the base plate 1 is rotatably connected to the same side of the top cover 2 via a connecting device 3. The connecting device 3 provides a stable connection base for the base plate 1 and the top cover 2, ensuring that the top cover 2 will not separate from the base plate 1 or move accidentally during horizontal transmission. Even under the pressure of the upper and lower rollers and the vibration and impact during transmission, the top cover 2 and the base plate 1 can still maintain a relatively fixed positional relationship, jointly providing reliable protection for the PTFE sheet and preventing damage to the sheet due to loosening of the fixture structure.

[0034] Preferably, the connecting device 3 is a hinge. A hinge is a mature and widely used connecting device 3, possessing good mechanical properties and stability. It can withstand significant flipping forces and a certain weight, ensuring that the connection between the base plate 1 and the top cover 2 does not become loose or damaged during frequent flipping operations. During the horizontal line transport process in PCB production, the fixture needs to be continuously squeezed and transported by rollers. The hinge ensures that the top cover 2 and the base plate 1 remain tightly connected, providing continuous and stable protection for the PTFE sheet. Simultaneously, the hinge allows the top cover 2 to rotate smoothly and flexibly around its axis. When flipping the top cover 2, the operator only needs to apply a small force to easily complete the action, facilitating the quick and accurate placement and removal of the PTFE sheet, improving the efficiency and precision of production operations.

[0035] In one embodiment, the base plate 1 and the top cover 2 are arranged symmetrically, one above the other. This symmetrical structural design allows the base plate 1 and top cover 2 to evenly distribute pressure when subjected to the pressure of the upper and lower rollers. When the fixture is squeezed by the rollers during horizontal transmission, the symmetrical structure can avoid local stress concentration and reduce fixture deformation or damage caused by uneven force. At the same time, uniform force can also better protect the PTFE sheet, preventing dents or other damage caused by uneven force on the fixture, thus ensuring the quality and performance of the sheet.

[0036] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

[0037] The present utility model patent has been described above with reference to the accompanying drawings. Obviously, the implementation of the present utility model patent is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present utility model patent, or the direct application of the inventive concept and technical solution of the present utility model patent to other occasions without modification, are all within the protection scope of the present utility model.

Claims

1. A horizontal conveyor fixture for preventing damage to PTFE sheets, characterized in that, The device includes a base plate and a top cover. One side of the base plate is rotatably connected to the same side of the top cover. The base plate includes a first rectangular frame. The top center of the first rectangular frame is recessed to form a lower limiting groove with a single-sided opening. The top cover includes a second rectangular frame. The bottom center of the second rectangular frame is recessed to form an upper limiting groove with a single-sided opening. The opening direction of the upper limiting groove is consistent with the opening direction of the lower limiting groove. When the top cover is flipped to overlap with the bottom plate, the upper limit groove and the lower limit groove form a placement limiting groove for placing PTFE sheets.

2. The horizontal conveyor fixture for preventing PTFE sheet damage according to claim 1, characterized in that, The bottom of the lower limiting groove has a first open area in the middle.

3. The horizontal conveyor fixture for preventing PTFE sheet damage according to claim 2, characterized in that, The thickness of the first perforated area is 2 mm.

4. The horizontal conveyor fixture for preventing PTFE sheet damage according to claim 1, characterized in that, A second open area is provided in the middle of the bottom of the upper limit slot.

5. The horizontal conveyor fixture for preventing PTFE sheet damage according to claim 4, characterized in that, The thickness of the second perforated area is 2mm.

6. The horizontal conveyor fixture for preventing PTFE sheet damage according to claim 1, characterized in that, One side of the base plate is rotatably connected to the same side of the top cover via a connecting device.

7. The horizontal conveyor fixture for preventing PTFE sheet damage according to claim 6, characterized in that, The connecting device is a hinge.

8. The horizontal conveyor fixture for preventing PTFE sheet damage according to claim 1, characterized in that, The base plate and the top cover are arranged symmetrically on top of each other.

9. The horizontal conveyor fixture for preventing PTFE sheet damage according to claim 1, characterized in that, The thickness of both the first rectangular border and the second rectangular border is 4mm.

10. The horizontal conveyor fixture for preventing PTFE sheet damage according to claim 1 or 9, characterized in that, The depth of both the upper limit groove and the lower limit groove is 2mm.

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