Strength detection device for PCB material tensile testing machine
By designing a coloring component on a PCB board material tensile testing machine, and using a clamp and coloring sponge to apply a contrasting color to the outer wall of the raw material column, the problem of difficult observation of air bubbles and pits is solved, thus improving the accuracy of strength testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-24
- Publication Date
- 2026-03-31
AI Technical Summary
In existing PCB board material tensile tests, air bubbles and pits are difficult to observe and mark with the naked eye, affecting the accuracy of strength testing.
Design a coloring assembly, including a clamp and a coloring sponge, for uniformly applying a contrasting color to the outer wall of a raw material column to reveal air bubble pits.
By using a coloring component to reveal bubble pits, the observability and accuracy of raw material column strength testing are improved.
Smart Images
Figure CN224066475U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tensile testing technology, and in particular to a strength testing device for a tensile testing machine for PCB board materials. Background Technology
[0002] A tensile testing machine, also known as a material tensile testing machine or universal tensile strength testing machine, is a new generation of mechanical testing equipment that integrates computer control, automatic measurement, data acquisition, screen display, and test result processing. Raw materials for PCB board manufacturing are made into solid cylindrical shapes and then installed on the tensile testing machine for tensile testing. The raw material cylinder will break, and this test is used to determine the ultimate strength of the raw material.
[0003] FR-4 is the most commonly used PCB material, made of glass fiber reinforced epoxy resin. This material is prone to the formation of tiny air bubbles on both the internal and external walls during molding. If there are too many air bubbles on the surface of the raw material column during molding, the strength of the column will differ significantly from that of a completely solid column, compromising the accuracy of the experiment. Most of these air bubble pits are small, invisible to the naked eye, and difficult to mark; therefore, this defect is often overlooked by operators before testing. Utility Model Content
[0004] The purpose of this application is to provide a strength testing device for a PCB board material tensile testing machine to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this application provides the following technical solution:
[0006] A strength testing device for a PCB board material tensile testing machine includes a bracket, a mounting plate, a rotating shaft, and a coloring assembly mounted on the mounting plate. The mounting plate is fixedly mounted on the bottom of the bracket, and a sprocket drive assembly is mounted on the bottom of the bracket. The rotating shaft is driven by the sprocket drive assembly, passes through the mounting plate, and is connected to the mounting plate via a bearing. The coloring assembly includes a first clamping plate and a second clamping plate. The second clamping plate is movably mounted above the mounting plate, and the first clamping plate is rotatably mounted at the end of the second clamping plate. Two clamping plates are provided, and the two clamping plates are arranged symmetrically, one above the other. A coloring sponge is fixedly clamped between the two clamping plates.
[0007] Preferably, support plates are fixedly installed at the ends of the two clamping plates 2 and 1, and the support plates of the two clamping plates 1 are installed between the support plates of the two clamping plates 2. A motor 1 is fixedly installed on the outer wall of the support plate of the clamping plate 2, and the output end of the motor 1 passes through the support plate of the clamping plate 2 and is fixedly connected to the support plates of the two clamping plates 1. The clamping plates 1 and 2 have the same shape, both being semi-circular planar curved plates, and the clamping plates 1 and 2 can form a complete ring.
[0008] Preferably, a second motor is fixedly mounted on the bottom of the mounting plate, and a screw is vertically arranged above the mounting plate. The output end of the second motor passes through the mounting plate and is fixedly connected to the screw. A connecting plate is mounted on the top of the screw via a bearing. One end of the connecting plate is connected to the outer wall of the rotating shaft via a bearing. The two clamping plates are driven by the screw. A slider is fitted onto the outer wall of the screw, and the two clamping plates are fixedly connected to the outer wall of the slider. A fixing rod is fixedly mounted between the connecting plate and the mounting plate. The fixing rod is parallel to the screw. A guide block is fixedly mounted on the outer wall of the slider. The guide block has a circular hole on its outer wall, and the guide block is fitted onto the fixing rod through the circular hole.
[0009] The beneficial effects of this utility model are: by setting a coloring component and a paint sponge between clamping plate one and clamping plate two, a contrasting color is evenly applied to the outer wall of the raw material column, making it easier to observe the air bubbles and pits that were originally difficult to detect on the raw material column. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0011] Figure 2 This is a schematic diagram of the installation structure of the coloring component in this utility model;
[0012] Figure 3 In this utility model Figure 2 A magnified schematic diagram of the structure of region A.
[0013] In the diagram: 1. Bracket; 2. Mounting plate; 3. Shaft; 4. Screw; 5. Clamping plate one; 6. Motor one; 7. Fixing rod; 8. Connecting plate; 9. Slider; 10. Clamping plate two; 11. Motor two; 12. Guide block. Detailed Implementation
[0014] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings, so that the advantages and features of this utility model can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of this utility model. The directional terms mentioned in this utility model, such as "up," "down," "front," "back," "left," "right," "top," and "bottom," are only for reference to the accompanying drawings. Therefore, the directional terms used are for the purpose of explaining and understanding this utility model, and not for limiting this utility model.
[0015] like Figure 1-3The strength testing device for a PCB board material tensile testing machine shown includes a bracket 1, a mounting plate 2, a rotating shaft 3, and a coloring component mounted on the mounting plate 2. The mounting plate 2 is fixedly mounted on the bottom of the bracket 1. A sprocket drive assembly is mounted on the bottom of the bracket 1. The rotating shaft 3 is driven by the sprocket drive assembly. The rotating shaft 3 passes through the mounting plate 2 and is connected to the mounting plate 2 via a bearing. The coloring component includes a first clamping plate 5 and a second clamping plate 10. The second clamping plate 10 is movably mounted above the mounting plate 2. The first clamping plate 5 is rotatably mounted at the end of the second clamping plate 10. Both the first clamping plate 5 and the second clamping plate 10 are provided in pairs. The two clamping plates 5 and 10 are arranged symmetrically, and a coloring sponge is fixedly clamped between the two clamping plates 5 and 10.
[0016] Support plates are fixedly installed at the ends of two clamping plates 10 and 5. The support plates of the two clamping plates 5 are installed between the support plates of the two clamping plates 10. A motor 6 is fixedly installed on the outer wall of the support plate of the clamping plate 10. The output end of the motor 6 passes through the support plate of the clamping plate 10 and is fixedly connected to the support plate of the two clamping plates 5. The clamping plates 5 and 10 have the same shape, both being semi-circular flat curved plates. The clamping plates 5 and 10 can form a complete ring.
[0017] A motor 11 is fixedly mounted on the bottom of the mounting plate 2. A screw 4 is vertically mounted on the top of the mounting plate 2. The output end of the motor 11 passes through the mounting plate 2 and is fixedly connected to the screw 4. A connecting plate 8 is mounted on the top of the screw 4 via a bearing. One end of the connecting plate 8 is connected to the outer wall of the rotating shaft 3 via a bearing. Two clamping plates 10 are driven by the screw 4. A slider 9 is fitted onto the outer wall of the screw 4. The two clamping plates 10 are fixedly connected to the outer wall of the slider 9. A fixing rod 7 is fixedly mounted between the connecting plate 8 and the mounting plate 2. The fixing rod 7 is parallel to the screw 4. A guide block 12 is fixedly mounted on the outer wall of the slider 9. The guide block 12 has a round hole on its outer wall and is fitted onto the fixing rod 7 through the round hole.
[0018] Example: The PBC material cylinder to be tested is fixed on the testing station of the tensile testing machine. The testing station is installed inside the bracket 1 and consists of upper and lower clamps. The rotating shaft 3 drives the upper clamp to rise until the raw material cylinder breaks, and the ultimate tensile strength of the raw material cylinder is recorded. The upper and lower clamps are installed above the mounting plate 2, and two clamping plates 5 and 10 are placed between the upper and lower clamps. According to the size of the raw material cylinder being tested, a coating sponge of the appropriate size is installed between the two clamping plates 5 and 10. The coating color of the sponge is a contrasting color to the color of the raw material cylinder. The two coating sponges are semi-circular in shape and can form a complete ring. Initially, the two clamping plates 10 and 5 are open, not hindering the installation of the raw material column. After the raw material column is installed, motor 6 drives the two clamping plates 5 to rotate, causing the two clamping plates 5 and 10 to close. The inner walls of the two paint sponges are in contact with the outer wall of the raw material column. Motor 11 starts, driving screw 4 to rotate between connecting plate 8 and mounting plate 2. When screw 4 rotates, it drives slider 9 to rise and fall. Guide block 12 is sleeved on the outside of fixed rod 7 to guide the rise and fall of slider 9. Through slider 9, the paint sponge between clamping plates 5 and 10 is evenly coated with color on the outer wall of the raw material column. After the contrasting paint is applied, the air bubbles and pits that were not easy to see on the raw material column become easy to observe because screw 4 drives the paint sponge to move at a uniform speed. The force applied during coloring is uniform, and the paint stays on the surface of the raw material column. The paint will not enter the pits. The operator can observe the pits on the outer wall of the raw material column and judge whether the strength of the raw material column meets the standard based on the number and size. After the stretching machine is started, the raw material column needs to be broken to determine the strength limit of the raw material column. The outer wall of the raw material column is coated with a contrasting color, so the edge shape of the end of the raw material column after it is broken will be very clear, which is convenient for the operator to record.
[0019] It should be noted that the parts not covered in this utility model are the same as or can be implemented using existing technology; the various drives in this utility model can be implemented by corresponding power structures such as cylinders, oil cylinders, electric cylinders, and motors in conjunction with connecting rods, guide rods, etc., and are not limited to the structures described in the specification and the drawings.
[0020] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.
Claims
1. A strength detection device for PCB board material tensile testing machine, comprising a support (1), a mounting plate (2), a rotating shaft (3) and a color coating assembly mounted on the mounting plate (2), characterized in that: The mounting plate (2) is fixedly installed at the bottom of the support (1), a chain wheel driving assembly is installed at the bottom of the support (1), the rotating shaft (3) is driven by the chain wheel driving assembly, the rotating shaft (3) penetrates through the mounting plate (2) and is connected with the mounting plate (2) through a bearing, the coloring assembly comprises a clamping plate one (5) and a clamping plate two (10), the clamping plate two (10) is movably installed above the mounting plate (2), the clamping plate one (5) is rotatably installed at the end of the clamping plate two (10), the clamping plate one (5) and the clamping plate two (10) are both provided in two pieces, the two pieces of the clamping plate one (5) and the clamping plate two (10) are symmetrically arranged, and coloring sponges are fixedly clamped between the two clamping plate one (5) and the clamping plate two (10).
2. The strength detection device for PCB board material tensile testing machine according to claim 1, characterized in that: The bottom of the mounting plate (2) is fixedly installed with a motor two (11), a screw rod (4) is vertically arranged above the mounting plate (2), the output end of the motor two (11) is fixedly connected with the screw rod (4) penetrating through the mounting plate (2), and the top of the screw rod (4) is installed with a connecting plate (8) through a bearing, one end of the connecting plate (8) is connected with the outer wall of the rotating shaft (3) through a bearing, and the two clamping plate two (10) are driven by the screw rod (4).
3. The strength detection device for PCB board material tensile testing machine according to claim 2, characterized in that: The outer wall of the screw rod (4) is installed with a sliding block (9), the two clamping plate two (10) are fixedly connected with the outer wall of the sliding block (9), a fixed rod (7) is fixedly installed between the connecting plate (8) and the mounting plate (2), the fixed rod (7) is arranged in parallel with the screw rod (4), the outer wall of the sliding block (9) is fixedly installed with a guide block (12), a circular hole is formed in the outer wall of the guide block (12), and the guide block (12) is sleeved on the fixed rod (7) through the circular hole.
4. The strength detection device for PCB board material tensile testing machine according to claim 1, characterized in that: The ends of the two clamping plate two (10) and the clamping plate one (5) are fixedly installed with support plates, the support plates of the two clamping plate one (5) are installed between the support plates of the two clamping plate two (10), and the outer wall of the support plate of the clamping plate two (10) is fixedly installed with a motor one (6), the output end of the motor one (6) is fixedly connected with the support plates of the two clamping plate one (5) penetrating through the support plate of the clamping plate two (10).
5. The strength detection device for PCB board material tensile testing machine according to claim 1, characterized in that: The clamping plate one (5) and the clamping plate two (10) are the same in shape and are both semicircular flat bending plates, and the clamping plate one (5) and the clamping plate two (10) can form a complete ring.