Screw locking device for crossbow body of composite crossbow

Abstract

The utility model discloses a screw locking device for a crossbow body of a composite crossbow, which comprises a rack, a workbench arranged on the rack, an air blowing type screw conveyor and a linear sliding table arranged on the workbench side by side, a clamp table arranged on the linear sliding table and used for clamping the crossbow body of the composite crossbow, a support assembly arranged on the workbench, and a screw locking mechanism arranged on the support assembly. The support assembly comprises a linear optical axis fixed to the workbench, a second fixing plate is movably arranged on the linear optical axis, a plurality of movable plate sets are arranged on the second fixing plate, electric screwdrivers are embedded in the movable plate sets, the lower portions of the electric screwdrivers are connected with chucks, the chucks are located above the crossbow body, and the lateral upper portions of the chucks are connected with an air blowing type screw conveyor through pipelines. And the air cylinder assembly comprises a lifting air cylinder, the lifting air cylinder drives the transmission optical axis to do lifting motion, and a second fixing plate is installed on the transmission optical axis. The device is compact in structure, easy to install and operate and high in efficiency, and the working intensity of manual screw locking is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of screw locking assembly technology improvement, in particular to a screw locking device for a compound crossbow body. Background Art

[0002] A compound crossbow typically consists of a head, arm, body, and trigger. The body is a crucial component of a crossbow, combining the rail, trigger, aiming, and energy storage. When the bowstring is pulled, it stores elastic energy, creating tension. When the trigger is pulled, this stored energy is converted into kinetic energy for the arrow, propelling it from the rail. Due to its mechanical structure, the crossbow body can store more energy, resulting in a greater range and power than a bow and arrow. Modern crossbow bodies have evolved from wooden ones to various alloys or modified plastics, ingeniously integrating various components to achieve the crossbow's firing function. The assembly of compound crossbow body parts typically uses screws, but each component often requires multiple screws. Consequently, each component requires multiple operators manually tightening the screws with screwdrivers, consuming significant labor and time to assemble the components required for a compound crossbow body.

[0003] In the prior art, the patent with announcement number CN219562096U discloses an automatic gasket-installing and screw-locking device, which belongs to the field of mechanical equipment technology. During use, the automatic gasket-installing and screw-locking device, the gasket feeding mechanism automatically loads gaskets, the screw feeding mechanism provides screws, the transverse moving motor can drive the transverse moving slide to slide along the transverse moving guide rail, and the longitudinal moving motor can drive the longitudinal moving slide to slide along the longitudinal moving guide rail, providing displacement for the precise movement of the electric screwdriver, the protective cover can effectively prevent the equipment from causing harm to the operator, the storage cabinet is used to store miscellaneous items, and the bottom of the operating table is provided with multiple rollers to facilitate the movement of the equipment. In short, the automatic gasket-installing and screw-locking device has a reasonable structural design, can automatically assemble gaskets and screws, has a higher degree of automation, does not require customers to change screws, and reduces customer production costs.

[0004] Patent publication number CN214393134U discloses an automatic screw-locking machine for irons, comprising a frame, an automatic screw-locking mechanism, and a conveying mechanism. The frame's workspace is provided with a rotating worktable, which is equipped with multiple positioning seats for securing the iron components. The automatic screw-locking mechanism includes a cylinder, multiple electric screwdrivers, a support frame, and a pressing and fixing assembly. The support frame is fixedly mounted on the workspace, the cylinder is mounted on the top of the support frame and is used to drive the support frame up and down, the multiple electric screwdrivers are fixed to the support frame and can move up and down with the support frame, and the pressing and fixing assembly is fixed to the support frame and is used to press and secure the iron components. The automatic screw-locking machine for irons described in this utility model can automatically lock multiple screws simultaneously, achieving streamlined production from loading to screw locking and then to discharging, saving labor and time costs and improving production efficiency.

[0005] In the above technical solution, the supporting structure design of the electric screwdriver is relatively complex and the manufacturing cost is high.

[0006] In order to solve one of the above problems, the present application provides a screw locking device for a compound crossbow body. Utility Model Content

[0007] The purpose of the utility model is to solve the problems existing in the prior art and to propose a screw locking device for a compound crossbow body, which has a compact structure, simple installation and operation, high efficiency, and reduces the labor intensity of manual screw locking.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a screw locking device for a compound crossbow crossbow body, comprising a frame, a workbench is provided on the frame, an air-blowing screw conveyor and a linear slide are installed side by side on the workbench, a fixture table is provided on the linear slide, the fixture table is used to clamp the crossbow body of the compound crossbow, a bracket assembly is installed on the workbench, the bracket assembly includes a linear optical axis fixed to the workbench, a second fixed plate is movably provided on the linear optical axis, a plurality of movable plate groups are provided on the second fixed plate, an electric screwdriver is embedded on the movable plate group, a chuck is connected to the lower side of the electric screwdriver, the chuck is located above the crossbow body and the upper side of the chuck is connected to the air-blowing screw conveyor through a pipeline;

[0009] The cylinder assembly includes a lifting cylinder, which drives the transmission optical axis to move up and down, and a second fixing plate is installed on the transmission optical axis.

[0010] Furthermore, the movable plate group as described above includes a second fixed plate processed with longitudinal elongated holes and an adjustment plate processed with transverse elongated holes, and the adjustment plate is fixed to the second fixed plate by screwing and perforating.

[0011] Furthermore, the adjustment plate as described above is threadedly connected to the second fixing plate by means of bolts passing through the transverse long hole and the longitudinal long hole respectively.

[0012] Furthermore, a U-shaped groove is processed on the adjustment plate as described above, and the electric screwdriver is embedded and fixed through the U-shaped groove. The electric screwdriver is connected to the universal coupling, and the cutter head is connected to the bottom of the universal coupling. A chuck is provided on the end of the cutter head.

[0013] Furthermore, the second fixing plate as described above is sleeved on the linear optical axis via a bearing.

[0014] Furthermore, there are two linear optical axes as described above, which are arranged side by side and connected by a first fixing plate.

[0015] Furthermore, the linear optical axis as described above is further provided with a second fixing ring and a fixing seat. The second fixing ring is located between the bearing and the fixing seat. The fixing seat is located at the end of the linear optical axis and is mounted on the workbench.

[0016] Furthermore, one end of the lifting cylinder as described above is connected to the transmission optical axis through a connecting piece, and the other end of the lifting cylinder is fixed to the frame through a support rod.

[0017] Furthermore, the transmission optical axis as described above is provided with a first fixing ring and a third fixing ring, and a compression spring and a second fixing plate are sleeved between the first fixing ring and the third fixing ring; the lifting cylinder is installed under the workbench.

[0018] Furthermore, a plurality of casters are provided at the bottom of the frame as described above, an electric control box and a start switch are provided under the workbench, an industrial robot and a wire trough are also installed on the workbench, and the industrial robot is located on one side of the linear slide.

[0019] Compared with the existing technology, the beneficial effects of the utility model are: it adopts a modular design, the equipment is easy to install and operate, the performance is safe and reliable, the speed of locking the crossbow body screws of the compound crossbow can be increased by two times or more than the original manual screw locking speed, and it can replace the frequent manual tightening action, reduce the labor intensity of manual screw locking, and achieve the purpose of improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of the utility model;

[0021] Figure 2 This is the main view of the utility model;

[0022] Figure 3 This is a schematic structural diagram of the cylinder assembly of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the bracket assembly of the present utility model.

[0024] In the figure: 1. Frame; 2. Workbench; 3. Casters; 4. Start switch; 5. Electric control box; 6. Wire trough; 7. Cylinder assembly; 701. First fixing ring; 702. Transmission optical axis; 703. Compression spring; 704. Connector; 705. Lifting cylinder; 706. Support rod; 9. Bracket assembly; 901. First fixing plate; 902. Electric screwdriver; 903. Bearing; 904. Adjustment plate; 905. Second fixing plate; 906. Universal joint; 907. Linear optical axis; 908. Second fixing ring; 909. Fixed seat; 910. Chuck; 12. Fixture table; 13. Air-blowing screw conveyor; 14. Crossbow body; 15. Linear slide; 16. Industrial robot. DETAILED DESCRIPTION

[0025] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "back," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of the present utility model, it should be noted that, unless otherwise expressly specified and limited, the terms "fixed", "installed", "connected", "set", etc. should be understood in a broad sense. For example, when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "installed on" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "connected" to another element, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a communication between the two elements.

[0027] For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1

[0030] Reference Figure 1-4 As shown, a screw locking device for a compound crossbow body of the present invention comprises a frame 1, a workbench 2 is provided on the frame 1, an air-blowing screw conveyor 13 and a linear slide 15 are installed side by side on the workbench 2, the linear slide 15 is driven by a servo motor, and can realize conveying the product with the screws locked to a specified position, which is not described in detail here, a clamping table 12 is provided on the linear slide 15, and the clamping table 12 is a tool for convenient disassembly and clamping of the compound crossbow body 14, which is generally operated by manual clamping, which is not described in detail here, a bracket assembly 9 is installed on the workbench 2, and the bracket assembly 9 includes a linear optical axis 907 fixed to the workbench 2, a second fixed plate 905 is movably provided on the linear optical axis 907, a plurality of movable plate groups are provided on the second fixed plate 905, an electric screwdriver 902 is embedded on the movable plate group, and the movable plate group is used to manually adjust the horizontal and vertical installation positions of the electric screwdriver 902 on the horizontal plane, a chuck 910 is connected below the electric screwdriver 902, and a clamp The head 910 is located above the crossbow body 14 and the upper side of the chuck 910 is connected to the air-blowing screw conveyor 13 through a pipeline. The air-blowing screw conveyor 13 conveys the screws in the feed bin into the chuck 910 by air pressure, which can realize the function of automatically conveying screws. The electric screwdriver 902 and the air-blowing screw conveyor 13 are conventional equipment on the market and are not described in detail here. The electric screwdriver 902 has a signal communication function. The electric screwdriver 902 controls the torque and speed by the PLC system. When the electric screwdriver 902 completes the locking of the compound crossbow crossbow body 14 screw and reaches a certain torque, the electric screwdriver 902 automatically stops running; the cylinder assembly 7, the cylinder assembly 7 includes a lifting cylinder 705, the lifting cylinder 705 drives the transmission optical axis 702 to move up and down, and a second fixed plate 905 is installed on the transmission optical axis 702. By adjusting the height of the second fixed plate 905, it is used to limit the distance between the chuck 910 and the crossbow body 14 to prevent the chuck 910 from damaging the crossbow body 14.

[0031] Example 2

[0032] Reference Figure 1-4 As shown, based on the technical solution of embodiment 1, a screw locking device for a compound crossbow body, for the specific structural design of the bracket assembly 9, as shown in FIG. Figure 4As shown, the movable plate group includes a second fixed plate 905 processed with a longitudinal elongated hole and an adjustment plate 904 processed with a transverse elongated hole. The adjustment plate 904 is fixed to the second fixed plate 905 by screwing and perforating. Specifically, the adjustment plate 904 is threadedly connected to the second fixed plate 905 by bolts passing through the transverse elongated hole and the longitudinal elongated hole respectively. In this way, by adjusting the bolts at different positions on the movable plate group and tightening them with nuts, the horizontal installation position of the electric screwdriver 902 can be adjusted to match the position of the crossbow body 14 where screws need to be driven and the suspended chuck 910. The electric screwdriver 902 can adjust the speed and torque, and can be used to lock the screws in conjunction with the chuck 910.

[0033] Furthermore, a U-shaped groove is processed on the adjustment plate 904, and the electric screwdriver 902 is embedded and fixed through the U-shaped groove, which is convenient for adjusting and fixing the position and direction of the electric screwdriver 902. The electric screwdriver 902 is connected to the universal coupling 906, and the cutter head is connected to the bottom of the universal coupling 906. The end of the cutter head is provided with a chuck 910. The universal coupling 906 has a spring buffer, which is used to maintain continuous output torque to the screw when the electric screwdriver 902 is subjected to force in different directions and to buffer the impact of the screw on the crossbow body 14. That is, the universal coupling 906 can transmit the torque of the electric screwdriver 902 to the cutter head to tighten the screw without being affected by the movement of the chuck 910.

[0034] Furthermore, the second fixing plate 905 is mounted on the linear optical axis 907 via a bearing 903. The bearing 903 utilizes a square flange linear bearing 903, allowing the second fixing plate 905 to move up and down along the linear optical axis 907, acting as a guide. The axial direction of the linear optical axis 907 is at a 90-degree angle to the surface of the workbench 2, limiting the direction of movement of the electric screwdriver 902. Furthermore, two linear optical axes 907 are provided, arranged side by side and connected by the first fixing plate 901, enhancing the overall stability of the bracket assembly 9. Furthermore, the linear optical axis 907 is also provided with a second fixing ring 908 and a fixing seat 909. The second fixing ring 908 is located between the bearing 903 and the fixing seat 909, limiting the raising and lowering position of the bearing 903. The fixing seat 909 is located at the end of the linear optical axis 907 and mounted on the workbench 2.

[0035] Example 3

[0036] Reference Figure 1-4 As shown, based on the technical solution of the above embodiment, a screw locking device for a compound crossbow body, for the specific structural design of the bracket assembly 9, as shown Figure 2 and Figure 3As shown, one end of the lifting cylinder 705 is connected to the transmission optical axis 702 via a connector 704. When debugging the equipment, the connector 704 can be removed to adjust the height of the electric screwdriver 902 so that the electric screwdriver 902 can be lowered to a position suitable for locking the crossbow body 14 of the compound crossbow. The axial direction of the transmission optical axis 702 is at 90 degrees to the surface of the workbench 2. The other end of the lifting cylinder 705 is fixed to the frame 1 via a support rod 706. Specifically, the transmission optical axis 702 is provided with a first fixing ring 701 and a third fixing ring. A compression spring 703 and a second fixing plate 905 are sleeved between the first fixing ring 701 and the third fixing ring. The compression spring 703 acts as a buffer for the second fixing plate 905. The lifting cylinder 705 is installed below the workbench 2 to reduce the space occupied above the workbench 2.

[0037] Furthermore, a plurality of casters 3 are provided at the bottom of the frame 1. The casters 3 can rotate 360 ​​degrees and have a brake function, which can realize the function of moving the overall position of the equipment and fixing the position. An electric control box 5 and a start switch 4 are provided under the workbench 2. A PLC control system, a servo drive system and an industrial robot 16 control system are installed inside the electric control box 5, which are not described in detail here. They are used to power on the equipment and control the operation of the equipment. The start switch 4 is electrically connected to the electric control box 5 and the lifting cylinder 705 and the electric screwdriver 902, and is used to start the equipment to lock the crossbow body 14 screws. The start switch 4 is installed in a hole reserved on the workbench 2. The starting switch 4 is positioned below the plane of the workbench 2. It is composed of two self-resetting push button switches and is distributed at the left and right ends of the workbench 2. After the equipment is powered on, the starting switches 4 at both ends must be pressed at the same time for the equipment to start running, thereby preventing the operator from accidentally touching one of the starting switches 4 and causing the equipment to run, with a high safety factor. An industrial robot 16 and a wire trough 6 are also installed on the workbench 2. The industrial robot 16 is located on one side of the linear slide 15 and is used to grab, carry and place the crossbow body 14 of the compound crossbow. The wire trough 6 is used to organize the lines and trachea of ​​the electric screwdriver 902 to prevent the exposed wires and trachea from affecting the operation of the equipment. No further details will be given here.

[0038] The operation process of the device of the present invention is as follows: first, turn on the power switch of the electric control box 5, manually place the crossbow body 14 of the compound crossbow on the fixture table 12 for clamping and fixing, and press the start switch 4 with both hands; the lifting cylinder 705 of the cylinder assembly 7 is reset, driving the transmission optical axis 702 to descend, so that the second fixed plate 905 moves downward accordingly; an electric screwdriver 902 is installed on the second fixed plate 905, and after the lifting cylinder 705 is reset and descends to the set height, the chuck 910 reaches above the crossbow body 14 of the compound crossbow, and the air-blowing screw conveyor 13 conveys the screw into the chuck 910, and the electric screwdriver 902 is started, and the locking screw is tightened through the universal coupling 906 After the power is transmitted to the cutter head locking screw in place, the electric screwdriver 902 stops running, and then the lifting cylinder 705 extends, driving the transmission optical axis 702 to rise upward, and the second fixed plate 905 resets upward; after the crossbow body 14 of the compound crossbow is screwed, the linear slide 15 moves to the left, and the crossbow body 14 of the compound crossbow is moved to the bottom of the industrial robot 16; the industrial robot 16 starts running, and uses a mechanical air gripper to grab the crossbow body 14 of the compound crossbow and place it in the specified position. At the same time, the linear slide 15 resets, and after the next compound crossbow body 14 is placed on the fixture table 12, the industrial robot 16 resets and the screw locking is completed; then the next cycle is entered.

[0039] All the above actions are controlled by the PLC system, and the 14 screws of the crossbow body of the compound crossbow are automatically locked. The operator can turn on or off some functions as needed to facilitate production needs. One device only requires one operator to achieve the speed of three manual screw locking, thereby greatly improving the work efficiency of locking the 14 screws of the crossbow body of the compound crossbow.

[0040] In the device of the present invention, the assembly and matching relationship of the various components involved, the starting switch 4, the electric control box 5, the lifting cylinder 705, the compression spring 703, the electric screwdriver 902, the bearing 903, the chuck 910, the universal coupling 906, the cutter head, the fixture table 12, the linear slide 15, the industrial robot 16 and the air-blowing screw conveyor 13 as well as the supporting control software are existing technologies or materials. The relevant technical personnel can purchase them directly from the market or make them to order according to the required product models and specifications.

[0041] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity or industrial electricity, and the main controller can be a conventional known device such as a computer that plays a control role.

[0042] The above description is only a preferred specific embodiment of the present invention. Common knowledge such as the specific structure and characteristics of the scheme is not described in detail here. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above embodiment, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. Any person skilled in the art who is familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the scope of protection of the present invention.

Claims

1. A screw locking device for a compound crossbow, comprising a frame (1), a workbench (2) provided on the frame (1), an air-blowing screw conveyor (13) and a linear slide (15) mounted side by side on the workbench (2), a fixture (12) provided on the linear slide (15), the fixture (12) being used for clamping a crossbow body (14) of the compound crossbow, characterized in that: A support assembly (9) is installed on the workbench (2), and the support assembly (9) includes a linear optical axis (907) fixed on the workbench (2), a second fixed plate (905) is movably provided on the linear optical axis (907), a plurality of movable plate groups are provided on the second fixed plate (905), an electric screwdriver (902) is embedded on the movable plate group, a chuck (910) is connected below the electric screwdriver (902), the chuck (910) is located above the crossbow body (14), and an air-blowing screw conveyor (13) is connected to the upper side of the chuck (910) through a pipeline; The cylinder assembly (7) includes a lifting cylinder (705), the lifting cylinder (705) drives the transmission optical axis (702) to move up and down, and a second fixing plate (905) is installed on the transmission optical axis (702).

2. A screw locking device for a compound crossbow according to claim 1, characterized in that: The movable plate group comprises a second fixed plate (905) processed with longitudinal long holes and an adjustment plate (904) processed with transverse long holes. The adjustment plate (904) is fixed to the second fixed plate (905) by screwing and perforating.

3. A screw locking device for a compound crossbow according to claim 2, characterized in that: The adjustment plate (904) is threadedly connected to the second fixing plate (905) via bolts passing through the transverse long hole and the longitudinal long hole respectively.

4. A screw locking device for a compound crossbow according to claim 3, characterized in that: The adjusting plate (904) is processed with a U-shaped groove, and the electric screwdriver (902) is embedded and fixed through the U-shaped groove. The electric screwdriver (902) is connected to the universal coupling (906). The universal coupling (906) is connected to the cutter head below, and the end of the cutter head is provided with a chuck (910).

5. The screw locking device for a compound crossbow according to claim 4, characterized in that: The second fixing plate (905) is sleeved on the linear optical axis (907) via a bearing (903).

6. The screw locking device for a compound crossbow according to claim 5, characterized in that: There are two linear optical axes (907), which are arranged side by side and connected via a first fixing plate (901).

7. The screw locking device for a compound crossbow according to claim 6, characterized in that: The linear optical axis (907) is further provided with a second fixing ring (908) and a fixing seat (909). The second fixing ring (908) is located between the bearing (903) and the fixing seat (909). The fixing seat (909) is located at the end of the linear optical axis (907) and is installed on the workbench (2).

8. The screw locking device for a compound crossbow according to claim 7, characterized in that: One end of the lifting cylinder (705) is connected to the transmission optical axis (702) via a connecting piece (704), and the other end of the lifting cylinder (705) is fixed to the frame (1) via a supporting rod (706).

9. The screw locking device for a compound crossbow according to claim 8, characterized in that: A first fixing ring (701) and a third fixing ring are provided on the transmission optical axis (702), and a compression spring (703) and a second fixing plate (905) are sleeved between the first fixing ring (701) and the third fixing ring; the lifting cylinder (705) is installed below the workbench (2).

10. A screw locking device for a compound crossbow according to any one of claims 1 to 9, characterized in that: A plurality of casters (3) are provided at the bottom of the frame (1), an electric control box (5) and a start switch (4) are provided below the workbench (2), an industrial robot (16) and a wire trough (6) are also installed on the workbench (2), and the industrial robot (16) is located on one side of the linear slide (15).

Images