Mechanism for adjusting angle of folding knife through sliding rail

Abstract

The utility model relates to a mechanism for adjusting the angle of a folding knife by adopting a sliding rail, which comprises a folding knife body, a folding knife clamping plate is fixed at the top of the outer surface of the folding knife body, and folding knife rests are arranged on the left side and the right side of the folding knife clamping plate. According to the mechanism for adjusting the angle of the folding knife through the sliding rail, the angle of the folding knife body can be adjusted through programming, the production line efficiency can be improved, the automation level and the equipment usability are improved, in the folding knife angle adjusting process, a gear shaft is driven to rotate through a servo motor, and the folding knife angle is adjusted through the sliding rail. The two gears and the two racks are in meshing transmission, rotation of the gear shaft can be accurately converted into linear movement of the two racks and the two sliding rails connected with the racks, the movement of the two sliding rails and the movement of the two pulley swing arms are in a trigonometric function relation, and therefore the swing angle of the folding knife body can be accurately controlled, and the folding knife is convenient to achieve. And the working performance and the product quality of the paper folding machine can be improved.

Description

Technical Field

[0001] This utility model relates to the field of folding knife technology, specifically a mechanism for adjusting the angle of a folding knife using a slide rail. Background Technology

[0002] The existing method for adjusting the angle of a folding knife is to control the opening angle of the folding knife by rotating a cam. When the cam rotates, the cam profile pushes the swing guide rod in the folding knife mechanism, causing the folding knife to open at a certain angle. Its disadvantages are: firstly, during long-term use, the cam and the driven part will constantly rub against each other, which will easily cause wear.

[0003] Once the cam or follower wears down, its profile and contact relationship change, which will affect the accurate adjustment of the folding knife angle. Wearing parts need to be checked and replaced regularly. On the other hand, the cam shape determines the swing angle and timing of the folding knife. If the swing angle and timing of the folding knife need to be adjusted, the cam needs to be replaced, which is very inconvenient. Based on this, a mechanism for adjusting the folding knife angle using a slide rail is proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a mechanism for adjusting the angle of a folding knife using a slide rail. This mechanism offers advantages such as precise control of the folding knife's swing angle and solves the problems of needing to periodically inspect and replace worn parts, as well as needing to replace the cam if the folding knife's swing angle and timing need to be adjusted.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a mechanism for adjusting the angle of a folding knife using a slide rail, comprising a folding knife body, a folding knife clamp plate fixed to the top of the outer surface of the folding knife body, and folding knife holders provided on both the left and right sides of the folding knife clamp plate;

[0006] The left and right ends of the folding knife holder and the folding knife clamp are respectively fixed with a first pulley arm and a second pulley arm. The upper sides of the first pulley arm and the second pulley arm are respectively provided with a first swing arm guide rail and a second swing arm guide rail. The opposite sides of the first swing arm guide rail and the second swing arm guide rail are respectively provided with a first slide rail and a second slide rail. The top of the opposite sides of the first swing arm guide rail and the second swing arm guide rail are respectively fixed with a first rack and a second rack. The upper sides of the first rack and the second rack are provided with the same gear shaft. The left and right ends of the outer surface of the gear shaft are respectively fixed with a first gear and a second gear.

[0007] Furthermore, the cross-sectional shape of the folding knife clamp is inverted U-shaped, and grooves are provided on the opposite sides of the first and second swing arm guide rails.

[0008] Furthermore, pulleys are fixed to the bottom of the opposite sides of the two grooves, and mounting rods are fixed to the opposite sides of the two pulleys. The two mounting rods are rotatably mounted between the first pulley swing arm and the second pulley swing arm, respectively, and nuts are threadedly connected to the opposite sides of the two mounting rods.

[0009] Furthermore, a limiting block is fixed to the lower surface of both the first rack and the second rack, and a limiting groove is formed on the side of each limiting block facing the first slide rail and the second slide rail, respectively.

[0010] Furthermore, the dimensions of the inner cavity of the limiting groove are adapted to the dimensions of the first slide rail and the second slide rail, and the two limiting blocks move back and forth linearly on the outer surfaces of the first slide rail and the second slide rail, respectively.

[0011] Furthermore, the dimensions of the inner cavity of the limiting groove are adapted to the dimensions of the first slide rail and the second slide rail, and the two limiting blocks move back and forth linearly on the outer surfaces of the first slide rail and the second slide rail, respectively.

[0012] Furthermore, the first gear and the second gear are meshed with the first rack and the second rack, respectively.

[0013] Furthermore, the first gear and the second gear are symmetrically distributed on the left and right sides of the vertical central axis of the gear shaft.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] This mechanism, which uses slide rails to adjust the angle of the folding blade, allows for programmable adjustment of the blade's angle, improving production line efficiency, automation, and ease of use. During blade angle adjustment, a servo motor drives the gear shaft to rotate, causing two gears to mesh with two racks. This accurately converts the gear shaft's rotation into linear movement of the two racks and the two connected slide rails. The movement of the two slide rails and the two pulley arms follows a trigonometric function relationship, enabling precise control of the blade's swing angle. This system is easy to implement and contributes to improving the folding machine's performance and product quality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a side view of the structure of this utility model;

[0018] Figure 3 This is a side view of the angle structure of the folding knife of this utility model.

[0019] In the diagram: 1. Folding knife body, 2. Folding knife clamp, 3. Folding knife holder, 4. No. 1 pulley swing arm, 5. No. 2 pulley swing arm, 6. No. 1 swing arm guide rail, 7. No. 2 swing arm guide rail, 8. No. 1 slide rail, 9. No. 2 slide rail, 10. No. 1 rack, 11. No. 2 rack, 12. No. 1 gear, 13. No. 2 gear, 14. Gear shaft. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1 The mechanism for adjusting the angle of the folding knife using a slide rail in this embodiment includes a folding knife body 1, a folding knife clamp 2 fixed to the top of the outer surface of the folding knife body 1, and folding knife holders 3 provided on both the left and right sides of the folding knife clamp 2.

[0022] In this embodiment, the cross-sectional shape of the folding knife clamp 2 is an inverted U-shape.

[0023] Please see Figures 2 to 3 To precisely control the swing angle of the folding knife body 1, in this embodiment, a first pulley swing arm 4 and a second pulley swing arm 5 are respectively fixed at the left and right ends between the folding knife holder 3 and the folding knife clamp 2 on opposite sides. A first swing arm guide rail 6 and a second swing arm guide rail 7 are respectively provided on the upper sides of the first swing arm 4 and the second swing arm 5. A first slide rail 8 and a second slide rail 9 are respectively provided on the opposite sides of the first swing arm guide rail 6 and the second swing arm guide rail 7. A first rack 10 and a second rack 9 are respectively fixed to the top of the opposite sides of the first swing arm guide rail 6 and the second swing arm guide rail 7. The second rack 11, the first rack 10 and the second rack 11 are provided with the same gear shaft 14 on their upper sides. The first gear 12 and the second gear 13 are fixed at the left and right ends of the outer surface of the gear shaft 14, respectively. If the folding knife body 1 needs to swing inward counterclockwise, the servo motor is started by controlling the display screen. The servo motor drives the gear shaft 14 to rotate clockwise. At the same time, the first gear 12 and the second gear 13 fixed on the gear shaft 14 rotate clockwise and move the first rack 10 and the second rack 11 that are meshed with it.

[0024] The first swing arm guide rail 6 and the second swing arm guide rail 7 each have a groove on their opposite sides. The bottom of the opposite sides of the two grooves are fixed with pulleys. The opposite sides of the two pulleys are fixed with mounting rods. The two mounting rods are rotatably installed between the first pulley swing arm 4 and the second pulley swing arm 5, respectively. Nuts are threadedly connected to the opposite sides of the two mounting rods.

[0025] In this embodiment, limit blocks are fixed on the lower surfaces of rack 10 and rack 11. Limit grooves are opened on the side of each limit block facing slide rail 8 and slide rail 9 respectively. The size of the inner cavity of the limit groove is adapted to the size of slide rail 8 and slide rail 9. The two limit blocks move back and forth linearly on the outer surfaces of slide rail 8 and slide rail 9 respectively. The movement of rack 10 and rack 11 drives the limit blocks to move forward on the outer surfaces of slide rail 8 and slide rail 9. At this time, the pulleys on pulley arm 4 and pulley arm 5 will move in the grooves of guide rail 6 and guide rail 7, thereby driving the folding knife body 1 to swing inward counterclockwise. The swing of the folding knife body 1 always moves up and down along the center line.

[0026] In addition, gear 12 and gear 13 are meshed with rack 10 and rack 11 respectively, and gear 12 and gear 13 are symmetrically distributed on the left and right sides of the vertical central axis of gear shaft 14.

[0027] Conversely, when the command is given, the gear shaft 14 rotates counterclockwise, causing the first gear 12 and the second gear 13 fixed on the shaft to rotate counterclockwise simultaneously, causing the first rack 10 and the second rack 11 to move and causing the limiting block to move backward together on the outer surface of the first slide rail 8 and the second slide rail 9.

[0028] It should be noted that a servo motor is fixed on one side of the gear shaft 14, and the servo motor is controlled by a controller, which is built into the display screen for easy operation by staff.

[0029] It is understandable that the programmable adjustment of the angle of the folding knife body 1 improves production line efficiency, automation level and ease of use. In the process of adjusting the angle of the folding knife body 1, the servo motor drives the gear shaft 14 to rotate, so that the two gears and two racks mesh and transmit power, which can accurately convert the rotation of the gear shaft 14 into the linear movement of the two racks and the two slide rails connected to them.

[0030] The movement of the two slide rails and the two pulley swing arms is in a trigonometric function relationship, which can precisely control the swing angle of the folding knife body 1, and help improve the working performance and product quality of the folding machine.

[0031] The working principle of the above embodiments is as follows:

[0032] The user can adjust the inward and outward, and up and down angles of the folding knife body 1 via the display screen. If the folding knife body 1 needs to swing inward counterclockwise, the servo motor is started via the display screen. The servo motor drives the gear shaft 14 to rotate clockwise. At the same time, the first gear 12 and the second gear 13 fixed on the gear shaft 14 rotate clockwise, causing the first rack 10 and the second rack 11 meshing with them to move. The movement of the first rack 10 and the second rack 11 causes the limiting block to move forward on the outer surface of the first slide rail 8 and the second slide rail 9. When the first pulley arm 4 and the second pulley arm 5 are activated, the pulleys on them will move within the grooves of the first pulley arm guide rail 6 and the second pulley arm guide rail 7, thereby causing the folding knife body 1 to swing counterclockwise inward. The swing of the folding knife body 1 always moves up and down along the center line. Conversely, when the command is given, the gear shaft 14 rotates counterclockwise, causing the first gear 12 and the second gear 13 fixed on the shaft to rotate counterclockwise at the same time, so that the first rack 10 and the second rack 11 move and cause the limiting block to move backward together on the outer surface of the first slide rail 8 and the second slide rail 9.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] 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 mechanism for adjusting the angle of a folding knife using a slide rail, comprising a folding knife body (1), characterized in that: A folding knife clamp plate (2) is fixed on the top of the outer surface of the folding knife body (1), and folding knife holders (3) are provided on both the left and right sides of the folding knife clamp plate (2). The left and right ends of the folding knife holder (3) and the folding knife clamp (2) are respectively fixed with a first pulley arm (4) and a second pulley arm (5). The upper sides of the first pulley arm (4) and the second pulley arm (5) are respectively provided with a first arm guide rail (6) and a second arm guide rail (7). The opposite sides of the first arm guide rail (6) and the second arm guide rail (7) are respectively provided with a first slide rail (8) and a second slide rail (9). The top of the opposite sides of the first arm guide rail (6) and the second arm guide rail (7) are respectively fixed with a first rack (10) and a second rack (11). The upper sides of the first rack (10) and the second rack (11) are provided with the same gear shaft (14). The left and right ends of the outer surface of the gear shaft (14) are respectively fixed with a first gear (12) and a second gear (13).

2. The mechanism for adjusting the angle of the folding knife using a slide rail according to claim 1, characterized in that: The cross-sectional shape of the folding knife clamp (2) is an inverted U-shape, and grooves are provided on the opposite side of the first swing arm guide rail (6) and the second swing arm guide rail (7).

3. The mechanism for adjusting the angle of the folding knife using a slide rail according to claim 2, characterized in that: Each of the two grooves has a pulley fixed to the bottom of its opposite side, and a mounting rod is fixed to the opposite side of each of the two pulleys. The two mounting rods are rotatably mounted between the first pulley arm (4) and the second pulley arm (5), respectively. Nuts are threadedly connected to the opposite side of the two mounting rods.

4. The mechanism for adjusting the angle of the folding knife using a slide rail according to claim 1, characterized in that: The lower surfaces of the first rack (10) and the second rack (11) are fixed with limit blocks, and the two limit blocks have limit grooves on the side facing the first slide rail (8) and the second slide rail (9), respectively.

5. The mechanism for adjusting the angle of the folding knife using a slide rail according to claim 4, characterized in that: The dimensions of the inner cavity of the limiting groove are adapted to the dimensions of the first slide rail (8) and the second slide rail (9), and the two limiting blocks move back and forth linearly on the outer surfaces of the first slide rail (8) and the second slide rail (9), respectively.

6. The mechanism for adjusting the angle of the folding knife using a slide rail according to claim 1, characterized in that: The first gear (12) and the second gear (13) are respectively meshed with the first rack (10) and the second rack (11).

7. The mechanism for adjusting the angle of the folding knife using a slide rail according to claim 1, characterized in that: The first gear (12) and the second gear (13) are symmetrically distributed on the left and right sides of the vertical central axis of the gear shaft (14).

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