A bolt screening tool

Abstract

This utility model relates to the field of bolt screening technology and discloses a bolt screening fixture, including a base, a linear channel plate fixedly installed on the upper surface of the base, an adjusting plate slidably installed on the front end of the upper surface of the linear channel plate, a feeding hole on the left side of the lower surface of the base, the upper end of the feeding hole extending through to the top of the linear channel plate, and an auxiliary adjustment mechanism set on the base. The auxiliary adjustment mechanism includes two positioning plates and two adjusting screws. The position of the positioning plates can be visually adjusted through the scale groove. With the threaded transmission of the adjusting screws, the movement distance of the positioning plates can be precisely controlled. Moreover, the two positioning plates can be adjusted independently, avoiding the problem of left and right position deviation when manually adjusting the adjusting plates. With the positioning effect of the positioning plates, the operator only needs to push the adjusting plate to make the slider abut against the positioning plate to quickly determine the correct position of the adjusting plate, thereby improving the use effect of the screening fixture.

Description

Technical Field

[0001] This utility model relates to the field of bolt screening technology, specifically a bolt screening tool. Background Technology

[0002] A bolt is a fastener that utilizes the mechanical principle of a helical inclined plane. It consists of two parts: a head and a shank. It needs to be used with a nut to fasten two parts with through holes. It is a detachable connection. Its specifications are mainly determined by the thread diameter, length, and pitch. Materials include carbon steel, stainless steel, and copper alloys. According to the head shape, it can be divided into hexagonal head, round head, and countersunk head bolts. According to the thread type, it is divided into coarse thread and fine thread. It is widely used in machinery manufacturing, construction engineering, automotive industry and other fields, and is an indispensable basic component in industrial production.

[0003] Currently, when screening bolts, the width of the screening channel needs to be adjusted due to the different bolt specifications. However, when manually adjusting the channel width of the bolt screening fixture, the operator needs to operate the adjusting bolts on both sides of the channel to directly adjust the position of the moving channel plate. This results in the operator adjusting one side first, then adjusting the other side, and repeating the operation back and forth. During the operation, the operator needs to pay attention to the adjustment amount of two positions at the same time, which can easily cause the movement distance of the channel walls on both sides to be inconsistent, resulting in a deviation in the left and right width of the channel, which directly affects the bolt screening. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a bolt screening fixture. It solves the problem that in traditional manual bolt screening fixtures, when adjusting the channel width, workers need to operate the adjusting bolts on both sides of the channel to directly adjust the position of the moving channel plate. This results in workers adjusting one side first, then the other, repeatedly, and having to simultaneously adjust both positions. This can easily lead to inconsistent movement distances on both sides of the channel wall, causing deviations in the left and right width of the channel, directly affecting bolt screening.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a bolt screening fixture, including a base, a linear channel plate fixedly installed on the upper surface of the base, an adjustment plate slidably installed on the front end of the upper surface of the linear channel plate, and a feeding hole opened on the left side of the lower surface of the base, the upper end of the feeding hole extending through to the top of the linear channel plate. An auxiliary adjustment mechanism is installed on the linear channel plate. The auxiliary adjustment mechanism includes two positioning plates and two adjusting screws. Two first rectangular slots are opened on the lower inner wall of the linear channel plate. The two positioning plates are slidably installed inside the two first rectangular slots respectively. The two adjusting screws are threaded on the rear surface of the linear channel plate. The front ends of the two adjusting screws are threaded through the interior of the two first rectangular slots respectively. The two adjusting screws are rotatably connected to the corresponding positioning plates respectively. A scale groove is opened on the left side of the position of the first rectangular slot on the lower inner wall of the linear channel plate.

[0006] Preferably, the auxiliary adjustment mechanism further includes two sliders, which are slidably installed inside the two first rectangular slots. Both sliders are fixedly connected to the adjustment plate, and each slider contacts a corresponding positioning plate.

[0007] Preferably, two second rectangular grooves are also provided on the lower inner wall of the linear channel plate. A connecting block is slidably installed inside each of the two second rectangular grooves. Both connecting blocks are fixedly connected to the adjustment plate. A fixing screw is fixedly connected to the rear surface of each of the two connecting blocks. A circular hole is provided on the rear inner wall of each of the two second rectangular grooves. The two fixing screws slide through the corresponding circular holes respectively.

[0008] Preferably, nuts are threaded onto the rear ends of both fixing screws.

[0009] Preferably, both positioning plates have convex circular grooves inside, and convex circular rods are rotatably installed inside the two convex circular grooves. The two convex circular rods are respectively fixedly connected to the corresponding adjusting screws.

[0010] Preferably, a throttle is fixedly connected to the rear surface of the two adjusting screws.

[0011] Preferably, the positioning plate can be a rectangular block.

[0012] Preferably, the positioning plate can also be a rectangular block with rubber pads fixedly installed on its left and right surfaces.

[0013] Compared with the prior art, this utility model provides a bolt screening fixture with the following advantages: This bolt screening fixture enables visual adjustment of the positioning plate position through a scale groove. With the threaded transmission of the adjusting screw, the movement distance of the positioning plate can be precisely controlled. Moreover, the two positioning plates can be adjusted independently, avoiding the problem of left and right position deviation when manually adjusting the adjusting plate. With the positioning function of the positioning plate, the operator only needs to push the adjusting plate to make the slider abut against the positioning plate to quickly determine the correct position of the adjusting plate, thereby improving the use effect of the screening fixture. Attached Figure Description

[0014] Figure 1This is a top view schematic diagram of the overall structure of the bolt screening tool of this utility model; Figure 2 This is a schematic diagram of the internal cross-sectional side view of the first rectangular groove of this utility model; Figure 3 This is a schematic diagram of the internal cross-sectional side view of the second rectangular groove of this utility model; Figure 4 This is a cross-sectional view of the positioning plate in Embodiment 2 of this utility model.

[0015] In the diagram: 1. Base; 2. Straight channel plate; 3. Adjustment plate; 4. Feed hole; 5. Positioning plate; 6. Adjustment screw; 7. First rectangular groove; 8. Scale groove; 9. Slider; 10. Second rectangular groove; 11. Connecting block; 12. Fixing screw; 13. Circular hole; 14. Nut; 15. Convex circular groove; 16. Convex circular rod; 17. Rotary handle. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4 This utility model provides a new technical solution: A bolt screening fixture includes a base 1, a straight channel plate 2 fixedly installed on the upper surface of the base 1, an adjusting plate 3 slidably installed on the front end of the upper surface of the straight channel plate 2, and a feeding hole 4 opened on the left side of the lower surface of the base 1, with the upper end of the feeding hole 4 extending through to the top of the straight channel plate 2. An auxiliary adjustment mechanism is provided on the linear channel plate 2. The auxiliary adjustment mechanism includes two positioning plates 5 and two adjusting screws 6. Two first rectangular grooves 7 are opened on the lower inner wall of the linear channel plate 2. The two positioning plates 5 are slidably installed inside the two first rectangular grooves 7 respectively. The two adjusting screws 6 are threadedly installed on the rear surface of the linear channel plate 2. The front ends of the two adjusting screws 6 are threaded through the interior of the two first rectangular grooves 7 respectively. The two adjusting screws 6 are rotatably connected to the corresponding positioning plates 5 respectively. A scale groove 8 is opened on the left side of the corresponding position of the first rectangular groove 7 on the lower inner wall of the linear channel plate 2.

[0018] Furthermore, the auxiliary adjustment mechanism also includes two sliders 9, which are slidably installed inside the two first rectangular slots 7. Both sliders 9 are fixedly connected to the adjustment plate 3, and both sliders 9 are in contact with the corresponding positioning plates 5.

[0019] Furthermore, two second rectangular grooves 10 are also provided on the lower inner wall of the straight channel plate 2. Connecting blocks 11 are slidably installed inside the two second rectangular grooves 10. The two connecting blocks 11 are fixedly connected to the adjustment plate 3. Fixing screws 12 are fixedly connected to the rear surface of the two connecting blocks 11. Circular holes 13 are provided on the rear inner wall of the two second rectangular grooves 10. The two fixing screws 12 slide through the corresponding circular holes 13 respectively.

[0020] Furthermore, nuts 14 are threaded onto the rear ends of both fixing screws 12.

[0021] Furthermore, both positioning plates 5 have convex circular grooves 15 inside, and convex circular rods 16 are rotatably installed inside both convex circular grooves 15. The two convex circular rods 16 are respectively fixedly connected to the corresponding adjusting screws 6.

[0022] Furthermore, a throttle 17 is fixedly connected to the rear surface of the two adjusting screws 6.

[0023] Furthermore, the positioning plate 5 can be a rectangular block.

[0024] Furthermore, the positioning plate 5 can also be a rectangular block with rubber pads fixedly installed on the left and right surfaces.

[0025] Base 1: As the basic support component of the tooling, it is directly fixed on the workbench. Its upper surface is used to install the linear channel plate 2, and the lower surface has a material discharge hole 4 on the left side to provide a discharge channel for unqualified bolts. It is the load-bearing foundation of the entire tooling. Linear channel plate 2: It is installed on the upper surface of the base 1 by welding or bolting. Its upper surface is for the adjustment plate 3 to slide. The interior is provided with a first rectangular groove 7 and a second rectangular groove 10, which provide sliding guidance for the positioning plate 5, the slider 9 and the connecting block 11 respectively, and at the same time constitute the main channel body for bolt conveying. Adjustment plate 3: It is slidably installed on the front end of the upper surface of the straight channel plate 2, and cooperates with the straight channel plate 2 to form an adjustable bolt screening channel. Its bottom is fixedly connected to the slider 9 and the connecting block 11. The channel width can be changed by moving its position to adapt to the screening requirements of bolts of different specifications. Discharge hole 4: It is located on the lower left side of the base 1 and extends to the top of the straight channel plate 2. When the bolt specifications do not meet the channel width requirements, it will fall out of this hole, thus separating and discharging the unqualified bolts. Positioning plate 5: It is slidably installed inside the two first rectangular grooves 7 respectively, and is rotatably connected to the adjusting screw 6. Driven by the adjusting screw 6, it moves back and forth in the first rectangular groove 7. After the position is determined by the scale groove 8, it provides a positioning reference for the slider 9 and assists the adjusting plate 3 in accurate positioning. Adjusting screw 6: It is threaded on the rear surface of the straight channel plate 2. The front end thread passes through the inside of the first rectangular groove 7 and is rotatably connected to the positioning plate 5 through the convex round rod 16. The rear end is fixedly connected to the handle 17. Rotating the handle 17 can drive the adjusting screw 6 to rotate, thereby driving the positioning plate 5 to slide in the first rectangular groove 7. The first rectangular groove 7 is formed on the lower inner wall of the straight channel plate 2. There are two of them, which provide sliding tracks for the positioning plate 5 and the slider 9 respectively, restricting them to move only in the front and back direction, and ensuring the accuracy of the movement trajectory of the positioning plate 5 and the slider 9. Scale groove 8: It is located on the lower inner wall of the straight channel plate 2, corresponding to the left side of the first rectangular groove 7. It is engraved with precise size scale to display the moving distance of the positioning plate 5, providing a visual reference for the operator to adjust the position of the positioning plate 5 and ensuring positioning accuracy. Slider 9: It is slidably installed inside the two first rectangular slots 7 and fixedly connected to the bottom of the adjustment plate 3. When the adjustment plate 3 moves, it will drive the slider 9 to slide synchronously. After the slider 9 contacts the positioning plate 5, it can transfer the positioning reference of the positioning plate 5 to the adjustment plate 3 to determine the final position of the adjustment plate 3. The second rectangular groove 10 is formed on the lower inner wall of the straight channel plate 2. There are two of them. They provide sliding guidance for the connecting block 11 and restrict the connecting block 11 to move only in the front and back direction, so as to prevent the adjusting plate 3 from deviating or shaking when sliding. Connecting block 11: It is slidably installed inside the second rectangular groove 10 and fixedly connected to the adjusting plate 3. The rear surface is fixedly connected to the fixing screw 12, which serves to connect the adjusting plate 3 and the fixing screw 12, and link the movement of the adjusting plate 3 with the sliding of the fixing screw 12. Fixed screw 12: One end is fixedly connected to the rear surface of the connecting block 11, and the other end slides through the circular hole 13. The external thread is engaged with the nut 14. When the nut 14 is tightened, the connecting block 11 can be pulled by the fixed screw 12, so that the adjusting plate 3 and the straight channel plate 2 are tightly fitted, thereby fixing the position of the adjusting plate 3. Circular hole 13: It is formed on the rear inner wall of the second rectangular groove 10, through which the fixing screw 12 slides, providing a moving channel for the fixing screw 12, while restricting the radial wobble of the fixing screw 12 and ensuring the linearity of its sliding. Nut 14: The nut 14 is threaded onto the fixing screw 12 at the rear end of the circular hole 13. When tightened clockwise, the nut 14 abuts tightly against the rear surface of the straight channel plate 2. The position of the fixing screw 12 is fixed by the threaded locking force, thereby locking the position of the connecting block 11 and the adjusting plate 3. Convex circular groove 15: It is formed inside the positioning plate 5 and is used to rotatably install the convex circular rod 16. Its convex structure can prevent the convex circular rod 16 from coming out of the groove, while allowing the convex circular rod 16 to rotate freely in the groove, so as to realize the rotatable connection between the adjusting screw 6 and the positioning plate 5. Convex circular rod 16: Rotatably installed inside the convex circular groove 15, one end is fixedly connected to the adjusting screw 6, and the other end is engaged in the convex circular groove 15. It transmits the rotational power of the adjusting screw 6 to drive the positioning plate 5 to move, and avoids the positioning plate 5 from rotating synchronously when the adjusting screw 6 rotates. Rotary handle 17: It is fixedly connected to the rear surface of the adjusting screw 6, providing a force point for the operator. By rotating the rotary handle 17, the adjusting screw 6 can be easily rotated, reducing the difficulty of manually adjusting the positioning plate 5.

[0026] Furthermore, the operator determines the required adjustment distance of the adjusting plate 3 according to the specifications of the bolts to be screened. Then, the operator rotates the handle 17 at the rear end of the two adjusting screws 6. The adjusting screws 6 rotate on the threaded surface of the straight channel plate 2. Their front ends rotate through the convex round rod 16 and engage with the convex round groove 15 of the positioning plate 5, causing the positioning plate 5 to slide back and forth in the first rectangular groove 7. The operator observes and precisely controls the back and forth movement distance of the two positioning plates 5 through the scale groove 8 on the lower inner wall of the straight channel plate 2 until the two positioning plates 5 reach the preset position matching the bolt specifications. Then, the operator stops rotating the handle 17 and pushes the adjusting plate 3 to slide on the front end of the upper surface of the straight channel plate 2. The adjusting plate 3 simultaneously drives the two sliders 9 at the bottom to slide in the first rectangular groove 7 and the two connecting blocks 11. Slide the slider 9 in the second rectangular groove 10 until the two sliders 9 abut against the surface of the corresponding positioning plate 5. At this time, the position of the adjusting plate 3 is adapted to the bolt specification. Then, put the two nuts 14 on the fixing screw 12 that passes through the circular hole 13. Rotate the nuts 14 clockwise to tighten them on the fixing screw 12 and make them fit tightly against the rear surface of the straight channel plate 2. The fixing relationship between the fixing screw 12 and the connecting block 11 is used to lock the position of the adjusting plate 3. The bolt is sent in from the rear end of the straight channel plate 2. The bolt moves forward along the limited width channel formed by the straight channel plate 2 and the adjusting plate 3. When the smaller bolt moves to the discharge hole, the smaller bolt does not meet the specification and falls from the discharge hole 4. The bolt that meets the specification passes through the channel smoothly and completes the screening.

[0027] The position of the positioning plate 5 can be visually adjusted by the scale groove 8. With the screw drive of the adjusting screw 6, the movement distance of the positioning plate 5 can be precisely controlled. The two positioning plates 5 can be adjusted independently, avoiding the problem of left and right position deviation when manually adjusting the adjusting plate 3. With the positioning function of the positioning plate 5, the operator only needs to push the adjusting plate 3 to make the slider 9 abut against the positioning plate 5 to quickly determine the correct position of the adjusting plate 3, thereby improving the use effect of the screening tool.

[0028] Example 1 (for reference) Figure 2 ) When the positioning plate 5 is a rectangular block, the contact between the plane of the rectangular block and the slider 9 is a surface contact, which avoids the adjustment plate 3 from having a slight offset during bolt conveying vibration, and ensures that the channel width always matches the bolt specifications. The rectangular block has a regular geometric shape and can be directly processed by a CNC milling machine, which reduces the production and manufacturing cost of the tooling. Example 2 (for reference) Figure 4 ) When the positioning plate 5 is a rectangular block with a rubber pad, the rubber pad increases the contact friction between the positioning plate 5 and the inner wall of the first rectangular groove 7, ensuring the stability of the positioning reference.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bolt screening fixture, comprising a base (1), a linear channel plate (2) fixedly mounted on the upper surface of the base (1), and an adjusting plate (3) slidably mounted on the front end of the upper surface of the linear channel plate (2), characterized in that: The lower surface of the base (1) has a feeding hole (4) on the left side, and the upper end of the feeding hole (4) extends to the top of the straight channel plate (2). An auxiliary adjustment mechanism is set on the linear channel plate (2). The auxiliary adjustment mechanism includes two positioning plates (5) and two adjusting screws (6). Two first rectangular grooves (7) are opened on the lower inner wall of the linear channel plate (2). The two positioning plates (5) are slidably installed inside the two first rectangular grooves (7). The two adjusting screws (6) are threaded on the rear surface of the linear channel plate (2). The front ends of the two adjusting screws (6) are threaded through the two first rectangular grooves (7). The two adjusting screws (6) are rotatably connected to the corresponding positioning plates (5). A scale groove (8) is opened on the left side of the corresponding first rectangular groove (7) on the lower inner wall of the linear channel plate (2).

2. The bolt screening tool of claim 1, wherein: The auxiliary adjustment mechanism also includes two sliders (9), which are slidably installed inside the two first rectangular slots (7). Both sliders (9) are fixedly connected to the adjustment plate (3), and both sliders (9) are in contact with the corresponding positioning plates (5).

3. The bolt screening tool according to claim 1 or 2, characterized in that: Two second rectangular grooves (10) are also provided on the lower inner wall of the straight channel plate (2). Connecting blocks (11) are slidably installed inside the two second rectangular grooves (10). The two connecting blocks (11) are fixedly connected to the adjustment plate (3). Fixing screws (12) are fixedly connected to the rear surface of the two connecting blocks (11). Circular holes (13) are provided on the rear inner wall of the two second rectangular grooves (10). The two fixing screws (12) slide through the corresponding circular holes (13).

4. The bolt screening tool of claim 3, wherein: Nuts (14) are threaded onto the rear ends of both of the fixing screws (12).

5. The bolt screening tool of claim 1, wherein: The two positioning plates (5) are provided with convex circular grooves (15) inside, and convex circular rods (16) are rotatably installed inside the two convex circular grooves (15). The two convex circular rods (16) are respectively fixedly connected to the corresponding adjusting screws (6).

6. The bolt screening tool according to claim 1, characterized in that: A throttle (17) is fixedly connected to the rear surface of the two adjusting screws (6).

7. The bolt screening tool of claim 1, wherein: The positioning plate (5) can be a rectangular block.

8. The bolt screening tool of claim 1, wherein: The positioning plate (5) can also be a rectangular block with rubber pads fixedly installed on the left and right surfaces.

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