A target changing machine and shooting system capable of front and rear paper winding and precise paper feeding

Abstract

The application relates to a target changing machine and a shooting system with front and rear paper winding and accurate paper walking, and belongs to the technical field of shooting equipment. The front and rear layout and the accurate paper walking mechanism are adopted to solve the problems of inconvenient paper winding and inaccurate target paper walking in the prior art. The target changing machine comprises a paper winding box body, a paper unwinding box body, a paper unwinding device, a paper winding device, a back plate assembly, target paper, an accurate paper walking mechanism and a system control unit. The paper winding box body and the paper winding box body are arranged side by side in front and back. The back plate assembly is arranged between the paper winding box body and the paper winding box body and is fixed to the top of the two box bodies. The paper unwinding device is arranged in the paper winding box body, and the paper winding device is arranged in the paper winding box body. One end of the target paper is connected with the paper unwinding device, the other end passes through the back plate assembly and is connected with the paper winding device. The accurate paper walking mechanism is arranged on the paper unwinding device and / or the paper winding device and is used for realizing accurate walking of the target paper in the winding and unwinding process. The system control unit is connected with the paper unwinding device, the paper winding device and the accurate paper walking mechanism.

Description

Technical Field

[0001] This invention relates to the field of shooting equipment technology, and in particular to a target changer and shooting system with front and rear paper feeding and precise paper feeding. Background Technology

[0002] Currently, the main methods for changing targets in live-fire training for military and police personnel include using inverted targets, sliding rail targets, and manual target changing. However, these methods have the following drawbacks and limitations:

[0003] Target placement: This method can only be used for rough shooting training. New target paper needs to be manually pasted to start a new round of shooting training. The operation is cumbersome, time-consuming, labor-intensive, and inefficient.

[0004] Sliding rail target: The target needs to be controlled to slide in front of the shooter and manually changed. The target paper replacement operation is cumbersome, time-consuming and inefficient.

[0005] Manual target changing: This method requires clearing out shooting training personnel, removing firearms and magazines to ensure a safe environment, and then having a designated person manually affix the target paper to the target at a distance. This method cannot be remotely controlled, is difficult to manage and maintain, and has extremely low efficiency in managing each round of shooting.

[0006] For the above reasons, Chinese patent CN114562911A discloses a target machine, system, and target-changing method with remote control and flexible target changing. The target paper backing plate is located on the upper front wall of the frame. Under the control of the cover layer control mechanism, the target paper moves along the front surface of the target paper backing plate, and its end is wound around a reel located inside the frame to achieve target paper release and rewinding. This patent's solution has the following shortcomings: 1) The target paper release and winding equipment are all located at the rear. This layout, where the reel and motor are located on the same side, is not conducive to smooth target paper release and winding, and easily leads to entanglement between the release and winding ends; 2) The target paper is directly wound on the reel without a positioning and paper feed accuracy control structure, making it impossible to achieve precise target paper feeding, easily causing target paper slack and affecting shooting performance.

[0007] Therefore, it is necessary to study a target changer and firing system with front and rear paper feeding and precise paper feeding to address the shortcomings of existing technologies and solve or mitigate one or more of the above-mentioned problems. Summary of the Invention

[0008] In view of this, the present invention provides a target changer and shooting system with front and rear paper feeding and precise paper feeding, which solves the problems of inconvenient paper feeding and inaccurate target paper positioning in the prior art by adopting a front and rear layout and a precise paper feeding mechanism.

[0009] On one hand, the present invention provides a target changer with front and rear paper feeding and precise paper feeding, the target changer including a paper feeding box, a paper receiving box, a paper feeding device, a paper receiving device, a back plate assembly, target paper, a precise paper feeding mechanism and a system control unit;

[0010] The paper feeding box and the paper receiving box are arranged side by side; the back plate assembly is located between the paper feeding box and the paper receiving box, and is positioned above the paper feeding box and the paper receiving box; the paper feeding device is located inside the paper feeding box, and the paper receiving device is located inside the paper receiving box; one end of the target paper is connected to the paper feeding device, and the other end passes around the front and rear sides of the back plate assembly and is connected to the paper receiving device; preferably, the target papers in front of and behind the back plate assembly are arranged parallel to the back plate assembly;

[0011] The precise paper feeding mechanism is installed on the paper feeding device and / or the paper receiving device, and is used to limit the movement of the target paper during the paper feeding and receiving process, and to collect movement data;

[0012] The system control unit is connected to the paper feeding device, the paper receiving device, and the precision paper feeding mechanism.

[0013] In addition to the aspects and any possible implementations described above, a further implementation is provided in which both the paper feeding device and the paper receiving device include a roll, an adjustable speed motor, and a steering roller; the roll is linked to the adjustable speed motor, and the adjustable speed motor drives the roll to rotate; the target paper to be fed or received is wound on the roll, and is released or retrieved as the roll rotates.

[0014] In addition to the aspects and any possible implementations described above, a further implementation is provided in which the precision paper feeding mechanism includes a plurality of rivets, a counting disk and a laser beam sensor;

[0015] The rivets are uniformly fixed to the outer periphery of the end of the deflector roller of the paper feeding device and / or the paper receiving device, and the diameter and spacing of the rivets are matched with the rivet holes provided on the edge of the target paper.

[0016] The counting disk is disposed on the outside of the steering roller and is parallel to the end face of the steering roller. The counting disk and the steering roller are fixedly connected.

[0017] The outer edge of the counting disk is evenly provided with a plurality of counting slits, and the counting slits are provided in a one-to-one correspondence with the rivets; the laser beam sensor is provided on the outer edge of the counting disk and is used to count the counting slits;

[0018] The laser beam sensor is connected to the system control unit and transmits the counting data to the system control unit.

[0019] In addition to the aspects and any possible implementations described above, a further implementation is provided in which the laser beam sensor includes a U-shaped probe head;

[0020] The outer edge of the counting disk is inserted into the opening of the U-shaped probe; the U-shaped probe is fixedly connected to the paper feeding box and / or the paper receiving box;

[0021] A laser emitter is located on one side of the opening of the U-shaped probe, and a laser receiver is located on the other side. When any counting slit of the counting disk rotates to the U-shaped probe, the laser receiver receives a laser signal to achieve counting.

[0022] In addition to the aspects and any possible implementations described above, a further implementation is provided in which the backplate assembly includes a backplate support frame, two quick-release support rods, a backplate, and a guide shaft;

[0023] The two quick-release support rods are respectively located on both sides of the back plate and are fixedly connected to the back plate; the guide shaft is located on the top of the back plate, and the two ends of the guide shaft are rotatably connected to the corresponding quick-release support rods.

[0024] The back panel support frame includes two vertical support rods and one horizontal support rod; the two vertical support rods are respectively located at both ends of the horizontal support rod and are fixedly connected; the bottom of the two vertical support rods is fixedly connected to the upper surface of the paper delivery box and the paper receiving box, and the top of the rods is provided with a longitudinal insertion hole; the two quick-release support rods are respectively inserted into the longitudinal insertion hole.

[0025] In addition to the aspects and any possible implementations described above, a further implementation is provided in which the target changer further includes a target paper roll replacement adjustment mechanism disposed at the roll shaft;

[0026] The target paper roll replacement and adjustment mechanism includes: a first movable gear, a second movable gear, a first target paper roll loading and unloading structure, a second target paper roll loading and unloading structure, an inclined target paper support frame, and a third target paper roll loading and unloading structure.

[0027] The first movable gear and the second movable gear are respectively inserted at both ends of the hollow cylinder of the target paper roll, which serves to fix the target paper roll.

[0028] The second structure for loading and unloading the target paper roll is located below the first movable gear, driving the movable gear to move horizontally left and right, thereby achieving the engagement and complete separation of the movable gear from the hollow cylinder of the target paper roll.

[0029] The first structure for loading and unloading the target paper roll is located outside the first movable gear, which drives the movable gear to move slightly left and right horizontally, thereby adjusting the engagement degree between the movable gear and the hollow cylinder of the target paper roll.

[0030] The third structure for loading and unloading the target paper roll is located between the first movable gear and the second movable gear, and is fixedly connected to the inclined target paper support frame, driving the inclined target paper support frame to move horizontally forward and backward; the inclined target paper support frame is located below the target paper roll.

[0031] In addition to the aspects and any possible implementations described above, a further implementation is provided in which the target paper roll loading and unloading first structure includes a first adjustment button, a vertical strong spring, a horizontal strong spring, and a force steering assembly; the lower end of the first adjustment button is connected to the vertical strong spring, the bottom of the vertical strong spring is connected to one end of the force steering assembly, the other end of the force steering assembly is connected to one end of the horizontal strong spring, and the other end of the horizontal strong spring is connected to the first movable gear.

[0032] In addition to the aspects described above and any possible implementation, a further implementation is provided in which the second structure for loading and unloading the target paper roll includes a first movable block, a first horizontal adjusting rod, two first positioning rods, a second adjusting knob, a first adjusting rod support block, and a second adjusting rod support block; the first movable gear is disposed on the first movable block; the first movable block has three horizontal through holes, including one threaded hole and two positioning holes with smooth inner walls; the first horizontal adjusting rod with external threads is threadedly inserted into the threaded hole, and the two first positioning rods with smooth surfaces are respectively inserted into the two positioning holes; the inner ends of the first horizontal adjusting rod and the two first positioning rods are connected to the first adjusting rod support block, the other ends of the two first positioning rods are connected to the second adjusting rod support block, and the other end of the first horizontal adjusting rod passes through the second adjusting rod support block and is fixedly connected to the second adjusting knob.

[0033] In addition to the aspects described above and any possible implementation, a further implementation is provided in which the target paper roll loading and unloading third structure includes a second movable block, a second horizontal adjusting rod, two second positioning rods, a third adjusting knob, a third adjusting rod support block, and a fourth adjusting rod support block; the inclined target paper support frame is disposed on the second movable block; the second movable block has three horizontal through holes, including one threaded hole and two positioning holes with smooth inner walls; the second horizontal adjusting rod with external threads is threadedly inserted into the threaded hole, and the two second positioning rods with smooth surfaces are respectively inserted into the two positioning holes; the inner ends of the second horizontal adjusting rod and the two second positioning rods are connected to the third adjusting rod support block, the other ends of the two second positioning rods are connected to the fourth adjusting rod support block, and the other end of the second horizontal adjusting rod passes through the fourth adjusting rod support block and is fixedly connected to the third adjusting knob.

[0034] In addition to the aspects described above and any possible implementations, a further implementation is provided in which the target changer also includes a shell receiving box located on the rear side of the backplate.

[0035] In addition to the aspects and any possible implementations described above, a further implementation is provided in which the ammunition receiving box is a closed rectangular box with outwardly folded plate-shaped insert ears on both sides of the front wall; the rear side of the back plate has two vertically arranged parallel insert slots, the insert slots being open at the top and inward; the insert ears are inserted into the insert slots on the corresponding sides from top to bottom.

[0036] The front wall is made of a bullet-penetrable material, and the rear wall is made of a bulletproof material;

[0037] The bulletproof material has a layered structure, consisting of an inner layer of bullet-absorbing rubber material and an outer layer of bulletproof steel plate.

[0038] In addition to the aspects and any possible implementations described above, a further implementation is provided in which the target-changing machine further includes a lightweight ballistic plate;

[0039] The lightweight bulletproof plate is located on the front wall of the cardboard box and is made of bulletproof material.

[0040] In addition to the aspects and any possible implementations described above, a further implementation is provided in which the bulletproof material includes a rubber bullet-absorbing plate and a bulletproof steel plate, the rubber bullet-absorbing plate and the bulletproof steel plate being stacked sequentially along the direction in which the bullet is fired.

[0041] On the other hand, the present invention provides a shooting system, including a target changer with front and rear paper feeding and precise paper feeding as described above, an image acquisition device located in front of the target changer, and a sound-emitting device located on the target changer; the image acquisition device acquires real-time shooting images and transmits them to the system control unit of the target changer for processing to obtain real-time shooting scores, and the sound-emitting device announces the scores.

[0042] Compared with the prior art, one of the above technical solutions has the following advantages or beneficial effects: The present invention adopts a separate box design for front and rear target paper feeding, which reduces the complexity of target paper winding and feeding, and makes the operation space simpler and more convenient.

[0043] Another technical solution in the above technical solution has the following advantages or beneficial effects: The present invention adopts a high-precision positioning control structure, which enables precise positioning each time the target is changed. Combined with a variable speed adjustment motor, the tension of the target paper can also be adjusted, which further ensures the paper feeding accuracy while preventing the target paper from becoming loose or too tense.

[0044] Another technical solution in the above technical solution has the following advantages or beneficial effects: The present invention benefits from the combined application of bulletproof rubber plate and bulletproof steel plate to form a lightweight bulletproof plate, thereby achieving simple, effective and lightweight protection for the box;

[0045] Another technical solution in the above-mentioned technical solution has the following advantages or beneficial effects: The present invention adopts a unique target paper roll replacement and adjustment mechanism, which can adapt to target paper rolls of different diameters and achieve fast and accurate target paper roll replacement. It can also adjust the assembly tension of the target paper roll to match the optimal pulling force of the adjustable speed motor and ensure the flatness of the target paper. The target paper roll fixing method is ingeniously designed, which greatly simplifies the target replacement process and makes winding simpler.

[0046] Another technical solution mentioned above has the following advantages or beneficial effects: The present invention adopts a portable frame design and lightweight materials, which can be installed on a fixed target track, or meet the needs of individual soldiers or organizations to carry it when training outside; the product can cover a wide range of application scenarios such as military shooting training activities, personal recreational training, and shooting competitions at home and abroad, and has broad market economic prospects.

[0047] Of course, any product implementing this invention does not necessarily need to achieve all of the technical effects described above at the same time. Attached Figure Description

[0048] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 This is a side view of a target changer with front and rear paper feeding and precise paper delivery, according to an embodiment of the present invention.

[0050] Figure 2 This is a front view structural diagram of a target changer with front and rear paper feeding and precise paper delivery provided in an embodiment of the present invention;

[0051] Figure 3 This is a right-side structural schematic diagram of a target changer with front and rear paper feeding and precise paper delivery provided in an embodiment of the present invention (with quick-release and disassembly of the ammunition box);

[0052] Figure 4 This is a schematic diagram of a counting sensor device and a steering roller structure provided in one embodiment of the present invention;

[0053] Figure 5This is a front view of a target paper support bracket and replacement device, and a target paper roll replacement and adjustment mechanism provided in an embodiment of the present invention;

[0054] Figure 6 This is a top view of a target paper support bracket and replacement device, and a target paper roll replacement and adjustment mechanism provided in an embodiment of the present invention.

[0055] Figure 7 This is a diagram illustrating the effect of the target paper support bracket and replacement device, and the target paper roll replacement and adjustment mechanism provided in an embodiment of the present invention, in the state of having a rolled target paper.

[0056] In the figure:

[0057] 1. Backplate; 2. Quick-release support rod; 3. Backplate support frame; 4. Top plate of the housing; 5. Rolled target release box; 6. Rolled target recovery box; 7. Target roll replacement and adjustment mechanism; 8. First reel; 9. Lightweight bulletproof plate; 10. Front-mounted adjustable speed motor; 11. First steering roller; 12. Second steering roller; 13. Rear-mounted adjustable speed motor; 14. Second reel; 15. System control unit; 16. Target machine base wheel; 17. Target paper; 18. Guide shaft; 19. Target recovery box;

[0058] a. Rivet; b. Counting disc; c. Counting slits; d. Laser beam sensor;

[0059] A. First adjustment knob; B. Second adjustment knob; C. Third adjustment knob; D. Movable gear; E. Inclined target paper support frame; F. Hollow target paper roll tube. Detailed Implementation

[0060] To better understand the technical solution of the present invention, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0061] It should be understood that the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0062] like Figure 1 , 2As shown in Figure 3, the front and rear roll paper changing machine of the present invention includes a roll paper box, a back plate support frame 3, a quick-release support rod 2, a back plate 1, a paper feeding device, a paper receiving device, a target paper 17, a precision paper feeding mechanism, a target paper roll replacement and adjustment mechanism 7, a system control unit 15, a take-up box 19, and target machine bottom wheels 16. The roll paper box includes a roll-shaped target paper release box 5, a roll-shaped target paper recovery box 6, and a box top plate 4; the roll-shaped target paper release box 5 and the roll-shaped target paper recovery box 6 are also the paper feeding box and the paper receiving box, respectively, and the two boxes are arranged adjacent to each other front and rear, with a shared box top plate 4 on both boxes. The back plate support frame 3 is located above the box top plate and in the center of the two boxes, with the two boxes located on the front and rear sides of the back plate support frame 3, and the bottom of the back plate support frame 3 is fixedly connected to the box top plate 4. The backplate support frame 3 includes two vertically arranged support rods, the upper half or the entire support rod being cylindrical with an inner bore. Two quick-release support rods 2 are respectively inserted into the two support rods; the left and right ends of the backplate 1 are respectively fixedly connected to the corresponding quick-release support rods 2. The top of the quick-release support rod 2 is provided with a guide shaft 18, which has a supporting and guiding function. The two ends of the guide shaft 18 are respectively rotatably connected to the corresponding quick-release support rod 2. During the paper feeding process, the target paper is wrapped around the outer surface of the guide shaft 18 to achieve smooth paper feeding. This invention uses quick-release support rods, which allows for quick replacement of the backplate when it is damaged by a bullet by pulling the support rods out of the backplate support frame 3.

[0063] The paper feeding device is installed inside the roll-shaped target paper release box 5, which includes a first roll 8, a front-mounted adjustable speed motor 10, and a first deflector roller 11. The first roll 8 is linked to the front-mounted adjustable speed motor 10, which drives the first roll 8 to rotate. The target paper roll to be fed is inserted on the first roll 8 and rotates together with the first roll 8 to release the target paper. The first deflector roller 11 is located at the bottom of the roll-shaped target paper release box 5, near one end of the back plate support frame 3. The released target paper passes around the first deflector roller 11 and then passes through the paper feeding slots provided on the roll-shaped target paper release box 5 and the top plate 4 of the box, covering the front wall of the back plate 1 from bottom to top, and then connects to the paper receiving device.

[0064] The paper collection device is installed inside the roll-shaped target paper recycling box 6, which includes a second roll 14, a rear adjustable speed motor 13, and a second steering roller 12. The second roll 14 is linked to the rear adjustable speed motor 13, which drives the second roll 14 to rotate. The target paper roll to be collected is inserted on the second roll 14 and rotates together with the second roll 14 to realize the collection of the target paper. The second steering roller 12 is located at the bottom of the roll-shaped target paper recycling box 6 and near one end of the back plate support frame 3. The target paper on the back wall of the back plate enters the box through the paper collection openings on the roll-shaped target paper recycling box 6 and the top plate 4 of the box, passes around the second steering roller 12, and then connects with the target paper roll to be collected. Under the rotation of the second roll 14, it is wound around the target paper roll.

[0065] The system control unit 15 is located on the rear side of the roll-shaped target paper recycling box 6, corresponding to... Figure 1 The right side of the roll-shaped target paper recycling box 6. The system control unit 15 can be installed inside the electrical control box, which is fixed on the roll-shaped target paper recycling box 6. The electrical control box serves to protect the system control unit 15. The system control unit 15 is connected to the front adjustable speed motor 10 and the rear adjustable speed motor 13 to control the operation of the motors and realize the release and recycling of the target paper.

[0066] The first steering roller 11 has plate-shaped hollow bodies at both its front and rear ends for guiding the target paper. Each plate-shaped hollow body is rectangular in shape, containing a rectangular cavity with openings at both ends. The width of the plate-shaped hollow body is slightly larger than the width of the target paper, and the thickness of the cavity is slightly larger than the thickness of the target paper. One end of the plate-shaped hollow body at the front end of the first steering roller 11 is adjacent to the roll of target paper to be released (without affecting the rotation of the roll), and the other end is adjacent to the first steering roller 11 (without affecting the rotation of the first steering roller). One end of the plate-shaped hollow body at the rear end of the first steering roller 11 is adjacent to the first steering roller 11 (without affecting the rotation of the first steering roller), and the other end is connected to the paper release slot on the roll-shaped target paper release box 5 and the top plate 4 of the box. When a new roll of target paper is replaced, the released target paper passes through the box through the guidance of the two plate-shaped hollow bodies, facilitating subsequent operations.

[0067] The precision paper feeding mechanism is located at the first deflector roller, such as... Figure 4As shown, the system includes several rivets a fixedly and evenly arranged on the outer periphery of the end of the first steering roller, a counting disk b located on the outside of the first steering roller and fixedly connected to it, and a laser beam sensor d located at the counting disk for detecting and counting the rotation of the counting disk. The target paper 17 is a strap-type target paper, meaning that several rivet holes matching the rivets a are evenly opened on the edge of the target paper. The spacing of the rivet holes is equal to the spacing of the rivets, and their positions are also matched. During operation, the rivets a are sequentially inserted into the corresponding rivet holes. The counting disk b is a thin disc-shaped disk, parallel to the end face of the first steering roller. Several counting slits c are evenly opened on its outer edge, the number of which is the same as the number of rivets a, and the slits correspond one-to-one with the rivets. The probe head of the laser beam sensor d is a U-shaped structure. The outer edge of the counting disk b is inserted into the opening of the U-shaped structure, and the U-shaped probe head is fixedly installed inside the housing. A laser emitter is located on one side of the opening of the U-shaped probe head, and a laser receiver is located on the other side. The laser beam sensor d is connected to the system control unit 15. Since the counting disk b is fixedly connected to the first reel 8, the counting disk will rotate with the rotation of the first reel. In most cases, the laser emitted by the laser emitter of the laser beam sensor d will be blocked by the counting disk and cannot be received by the laser receiver. Only when the counting slit c rotates to the U-shaped structure probe head can the laser receiver receive the laser signal, thereby completing one count and transmitting the counting signal to the system control unit 15.

[0068] The precise paper feeding control method of this invention is as follows: through the design of the strap-type target paper 17, combined with the use of the precise paper feeding mechanism and the steering roller, the counting slit corresponds to the rivet of the steering roller. When the steering roller rotates, it drives the rivet a to rotate. When the rivet a passes through the rivet hole located on the edge of the strap-type target paper, the counting disk b rotates synchronously. When the laser receiver of the laser beam sensor located on the right side of the counting disk receives the laser signal sent from the opposite side through the counting slit, it will send a counting signal to the system control unit 15. When the counting signal received by the system control unit 15 reaches the number required for one target change, the precise paper feeding control for a single target change is completed, and a prompt is made to replace the new target paper roll or change the movement direction of the target paper 17.

[0069] In addition, the design of the rivets and rivet holes of the present invention can provide a certain force for the release of the target paper when replacing the new target paper. Combined with the aforementioned plate-shaped hollow body for guiding the target paper, it can further consolidate the target paper guiding function.

[0070] In a preferred embodiment, the precision paper feeding mechanism of the present invention can also be simultaneously located at the first and second steering rollers, with the system control unit 15 recording the time point of each count while counting. Since the distance of the target paper from the first steering roller to the back plate and then to the second steering roller is fixed under the same tension, the counting time interval of the two precision paper feeding mechanisms is ideally fixed. When this time interval gradually changes, it indicates that the tension of the target paper before and after passing the back plate has changed. Specifically, when the time difference between the counting time point at the first steering roller and the counting time point at the second steering roller decreases, it indicates that the target paper tension has increased; conversely, when the time difference increases, it indicates that the target paper has become loose. Based on experience, two judgment thresholds are set. When the time difference decreases and reaches the corresponding judgment threshold, or when the time difference increases and reaches the corresponding judgment threshold, the system control unit 15 adjusts the target paper tension by controlling the rotation speed of the two motors. Through this judgment and adjustment, the accuracy of the target paper feeding is further ensured.

[0071] In a preferred embodiment, the present invention provides a magazine 19 on the rear side of the back plate. The magazine 19 is specifically located between the back plate and the target paper and is detachably assembled with the back plate. It is a closed rectangular box. The left and right sides of the front wall (i.e., the side wall near the back plate) are respectively provided with outward-curving plate-shaped insert ears. The rear side of the back plate has two vertically arranged parallel insert slots, which are open at the top and inward. During assembly, the insert ears are inserted from top to bottom into the corresponding insert slots, enabling rapid assembly and disassembly of the magazine 19. The front wall (also called the bullet-facing surface) of the magazine 19 is made of a bullet-penetrating rubber material, while the rear wall (also called the bullet-blocking surface) is made of bulletproof material. Bullets penetrate the front wall, enter the magazine, and are blocked by the rear wall, thus completing the collection of bullets. The rear wall's bulletproof material has a two-layer structure: the first layer is bullet-absorbing rubber, and the second layer is a bulletproof steel plate. The first layer is the inner layer, and the second layer is the outer layer. The rubber material first slows down the bullet, and then the bulletproof steel plate further intercepts and blocks it. Since the amount of bullets used in shooting training is enormous, this ammunition collection box can effectively recover discarded bullets, offering economic benefits. In addition, the collection box also prevents bullets from flipping the target paper after firing and causing it to be hit again, thus preserving and verifying the target paper scores. In special circumstances, such as accidental damage to the target paper, the collection box used by a specific person or during a specific time period can be disassembled and recovered. Information such as the number and location of bullet holes on the front wall of the collection box, as well as the number of bullets collected, can be compared with the initial firing information and target paper information to verify the results in special situations. Because of the bullet recovery, fired bullets will not damage anything behind the target changing machine, greatly improving the safety of the shooting range and broadening the application scenarios of the target changing machine.

[0072] The target machine has four, six, or eight base wheels 16, located at the bottom of the cardboard box, including the four corners and other central positions to ensure overall balance. The target machine is moved by pushing force through these base wheels. The base wheels 16 are swivel wheels with locking mechanisms. After being pushed to a predetermined position, the locking mechanism controls the wheel rotation, thus locking the entire target machine in that position. The locking mechanism is conventional prior art, and this invention is not limited to it; any existing locking structure can be used.

[0073] Target paper roll replacement and adjustment mechanism 7, such as Figure 5 , Figure 6 , Figure 7 As shown, the mechanism, located at the first and second reels, accommodates target paper rolls of different diameters and includes: a first adjusting knob A, a second adjusting knob B, a third adjusting knob C, a movable gear D, an inclined target paper support frame E, and a hollow target paper roll tube F. The target paper roll replacement and adjustment mechanism 7 is located on the target paper mounting base plate, which is fixedly mounted within the corresponding housing. Detailed structure and operation are as follows:

[0074] (1) First structure for loading and unloading target paper rolls: The first and second rolls are not actual long shaft structures, but are both implemented using two movable gears set at both ends. Both movable gears are fixed by corresponding support brackets, and the movable gears are located inside the support brackets. The two ends of the hollow target paper roll tube F are respectively fitted onto the movable gears D at the corresponding ends. A first adjustment knob A is set on the outer side of one of the support brackets. The first adjustment knob A is connected to the movable gear D at that end. By adjusting the first adjustment knob A, the tension between the movable gear D at that end and the hollow target paper roll tube F is controlled to adapt to the optimal pulling force of the front adjustable speed motor 10 or the rear adjustable speed motor 13, thereby ensuring the flatness after the target paper is replaced. The lower end of the first adjustment knob A is connected to a vertical strong spring. The bottom of the vertical strong spring is connected to one end of the force steering component. The other end of the force steering component is connected to one end of a horizontal strong spring. The other end of the horizontal strong spring is connected to the movable gear D. During operation, rotating the first adjustment button A pushes the vertical force spring, which in turn pushes the force steering assembly. The force steering assembly converts the vertical force into a horizontal force and transmits it to the horizontal force spring. The deformation force of the horizontal force spring causes the movable gear D to move left and right, thereby adjusting the tension between the movable gear D and the hollow target paper roll F. The force steering assembly can be implemented by stacking two right-angled isosceles triangles, or other existing structures and components can be used; no limitation is made here.

[0075] (2) Second structure for target paper roll loading and unloading: One of the aforementioned support brackets is fixedly mounted on the movable block (the two movable gears D need to be at the same height by making the two support brackets different heights). The movable block has a horizontal threaded hole, through which a horizontal adjusting rod with external threads passes. The outer end of the horizontal adjusting rod is fixedly connected to the second adjusting knob B, and the inner end of the horizontal adjusting rod is rotatably fixed to an adjusting rod support block. The other adjusting rod support block has a through hole, through which the outer end of the horizontal adjusting rod passes and is fixedly connected to the second adjusting knob B. Both adjusting rod support blocks are fixed to the target paper mounting base plate. The movable block also has two positioning through holes with smooth inner walls. The two positioning through holes are located on the front and rear sides of the horizontal threaded hole, and the three are parallel to each other. At the same time, a positioning rod with a smooth surface passes through each positioning hole, and both ends of the positioning rod are fixedly connected to the two adjusting rod support blocks. The two positioning through holes and the horizontal threaded hole are arranged in an isosceles triangle when viewed from the side, with the horizontal threaded hole at the apex and the two positioning through holes at the base. The presence of two positioning holes and a positioning rod restricts the movable block to horizontal movement only, thus limiting the direction of movement and improving stability. During operation, rotating the second adjustment knob B controls the left and right movement of the movable block, which in turn drives the movable gear D, which is mounted on the movable block via a support bracket, to move left and right. This allows the movable gear D to engage or disengage with the hollow target paper roll F, enabling the quick removal of an old roll of target paper or the installation of a new roll.

[0076] Both the second and first target paper roll loading and unloading structures described above can enable the left and right movement of the movable gear D. The difference between the two is that the second target paper roll loading and unloading structure is a coarse adjustment, which enables the complete separation or engagement of the movable gear D and the hollow target paper roll tube F; the first target paper roll loading and unloading structure is a fine adjustment, which is used to adjust the degree of engagement between the movable gear D and the hollow target paper roll tube F when the target paper roll has been assembled.

[0077] (3) Target paper roll loading and unloading third structure: This part controls the inclined target paper support frame E to move in the front and back direction through the third adjustment knob C, so as to support target paper of different diameters before installation, thereby aligning the inner wall of the hollow target paper roll F with the center of the movable gear D, realizing the rapid adaptation of a new diameter target paper roll and reducing the difficulty of replacing a roll of target paper. The structure of this part is similar to the structure in part (2) that controls the movable gear D to move in the left and right direction through the second adjustment knob B, the difference being that the setting direction of the horizontal adjustment rod and the two horizontal positioning rods is changed from the left and right direction to the front and back direction. Correspondingly, the setting direction of the relevant movable blocks, the three through holes in the movable blocks and the two adjustment rod support blocks are all adjusted to the front and back direction. The inclined target paper support frame E is fixed to the movable block, and the third adjustment knob C is fixed to the horizontal adjustment rod. By rotating the third adjustment knob C, the movable block is moved back and forth, which in turn drives the inclined target paper support frame E to move back and forth, so as to support target paper of different diameters. The target paper support structure is set on the target paper mounting base plate and is located in the middle of the two movable gears D.

[0078] As a preferred embodiment, the present invention provides a lightweight bulletproof plate 9 on the front wall of the housing, namely the front wall of the roll-shaped target release housing 5. This plate consists of a rubber shrapnel plate and a bulletproof steel plate. The rubber plate decelerates the projectile, effectively preventing ricochets from injuring shooting personnel, while the inner bulletproof steel plate provides effective protection for the target changer housing. This design, compared to using bulletproof materials that meet rigidity requirements for the entire housing, offers the advantage of lightweight construction, avoiding the problems of excessive weight of the entire target changer caused by the bulletproof steel plate, which would hinder movement and transportation.

[0079] In a preferred embodiment, the system control unit 15 of the present invention is further equipped with a wireless communication component, enabling the system control unit 15 to be remotely controlled. The remote terminal can receive the operating parameters of each motor in the target changing machine, the tension of the target paper on the front and back of the backplate, and other operating parameters, and can transmit the instructions input by the remote terminal to the system control unit 15 to further adjust the operating parameters of each motor. This long-distance wireless remote target changing allows users to change the design training target paper at different distances using a remote control, and, combined with faster disassembly and installation of new and old target paper, improves shooting training efficiency and management and maintenance efficiency.

[0080] This invention also provides a flexible target paper presentation format, which is beneficial for improving shooting training levels. The various target-changing formats designed in this invention include, but are not limited to:

[0081] 1) Dynamic target changing mode: By controlling the speed of the adjustable motor, the target paper does not stop during the changing process and a whole roll of shooting target paper is changed at a certain fixed speed, which increases the training difficulty for shooting training users.

[0082] 2) Random target changing format: By printing different types of target paper17, different types of shooting scenarios can be experienced within a shooting training cycle, which enhances the richness of shooting training;

[0083] 3) Up-and-down cyclic target changing mode: By controlling the direction of the adjustable speed motor, the target paper can be remotely controlled to move up and down irregularly at different speeds and directions, increasing the fun of training or competition.

[0084] As an application of the target-changing machine described above, the present invention also provides a shooting system, including the target-changing machine of the present invention, an image acquisition device disposed in front of the target-changing machine, and a sound-emitting device disposed on the target-changing machine. The image acquisition device acquires real-time shooting images and transmits them to the system control unit of the target-changing machine for processing to obtain real-time shooting scores, and the sound-emitting device announces the scores.

[0085] The foregoing has provided a detailed description of a front-and-rear paper feeding and precise paper delivery target changer according to the embodiments of this application. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this application; furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

[0086] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system including said element. "Substantially" means within an acceptable margin of error, indicating that a person skilled in the art can resolve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0087] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” used in the embodiments of this invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. In this application, the terms “upper,” “lower,” “left,” “right,” “inner,” “outer,” “middle,” “horizontal,” and “vertical,” etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings. Some of the above terms may also be used to indicate other meanings besides orientation or positional relationships; for example, the term “upper” may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. The term “and / or” used herein is merely a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Additionally, the character “ / ” in this document generally indicates that the preceding and following related objects have an “or” relationship.

Claims

1. A target changer with front and rear-mounted paper feeding and precise paper delivery, characterized in that, The target changer includes a paper feeding box, a paper receiving box, a paper feeding device, a paper receiving device, a backplate assembly, target paper, a precision paper feeding mechanism, and a system control unit; The paper feeding box and the paper receiving box are arranged side by side; the back plate assembly is located between the paper feeding box and the paper receiving box, and is positioned above the paper feeding box and the paper receiving box; the paper feeding device is located inside the paper feeding box, and the paper receiving device is located inside the paper receiving box; one end of the target paper is connected to the paper feeding device, and the other end passes around the front and rear sides of the back plate assembly and is connected to the paper receiving device; The precise paper feeding mechanism is installed on the paper feeding device and / or the paper receiving device, and is used to limit the movement of the target paper during the paper feeding and receiving process, and to collect movement data; The system control unit is connected to the paper feeding device, the paper receiving device, and the precision paper feeding mechanism; Both the paper feeding device and the paper receiving device include a roll, an adjustable speed motor, and a steering roller; the roll is linked to the adjustable speed motor, and the adjustable speed motor drives the roll to rotate; the target paper to be fed or received is wound on the roll, and is released or retracted as the roll rotates; The target changer also includes a target paper roll replacement and adjustment mechanism located at the roll shaft. The target paper roll replacement and adjustment mechanism includes: a first movable gear, a second movable gear, a first target paper roll loading and unloading structure, a second target paper roll loading and unloading structure, an inclined target paper support frame, and a third target paper roll loading and unloading structure. The first movable gear and the second movable gear are respectively inserted at both ends of the hollow cylinder of the target paper roll, which serves to fix the target paper roll. The second structure for loading and unloading the target paper roll is located below the first movable gear, driving the movable gear to move horizontally left and right, thereby achieving the engagement and complete separation of the movable gear from the hollow cylinder of the target paper roll. The first structure for loading and unloading the target paper roll is located outside the first movable gear, which drives the movable gear to move slightly left and right horizontally, thereby adjusting the engagement degree between the movable gear and the hollow cylinder of the target paper roll. The third structure for loading and unloading the target paper roll is located between the first movable gear and the second movable gear, and is fixedly connected to the inclined target paper support frame, driving the inclined target paper support frame to move horizontally forward and backward; the inclined target paper support frame is located below the target paper roll; The first structure for loading and unloading the target paper roll includes a first adjustment button, a vertical strong spring, a horizontal strong spring, and a force steering assembly; the lower end of the first adjustment button is connected to the vertical strong spring, the bottom of the vertical strong spring is connected to one end of the force steering assembly, the other end of the force steering assembly is connected to one end of the horizontal strong spring, and the other end of the horizontal strong spring is connected to the first movable gear. The second structure for loading and unloading the target paper roll includes a first movable block, a first horizontal adjusting rod, two first positioning rods, a second adjusting knob, a first adjusting rod support block, and a second adjusting rod support block. The first movable gear is mounted on the first movable block. The first movable block has three horizontal through holes, including one threaded hole and two positioning holes with smooth inner walls. The first horizontal adjusting rod with external threads is threaded into the threaded hole, and the two first positioning rods with smooth surfaces are respectively inserted into the two positioning holes. The inner ends of the first horizontal adjusting rod and the two first positioning rods are connected to the first adjusting rod support block, and the other ends of the two first positioning rods are connected to the second adjusting rod support block. The other end of the first horizontal adjusting rod passes through the second adjusting rod support block and is fixedly connected to the second adjusting knob. The target paper roll loading and unloading third structure includes a second movable block, a second horizontal adjusting rod, two second positioning rods, a third adjusting knob, a third adjusting rod support block, and a fourth adjusting rod support block; the inclined target paper support frame is disposed on the second movable block; the second movable block has three horizontal through holes, including one threaded hole and two positioning holes with smooth inner walls; the second horizontal adjusting rod with external threads is threadedly inserted into the threaded hole, and the two second positioning rods with smooth surfaces are respectively inserted into the two positioning holes; the inner ends of the second horizontal adjusting rod and the two second positioning rods are connected to the third adjusting rod support block, the other ends of the two second positioning rods are connected to the fourth adjusting rod support block, and the other end of the second horizontal adjusting rod passes through the fourth adjusting rod support block and is fixedly connected to the third adjusting knob.

2. The target changer with front and rear winding and precise paper feeding as described in claim 1, characterized in that, The precision paper feeding mechanism includes several rivets, a counting disk, and a laser beam sensor; The rivets are uniformly fixed to the outer periphery of the end of the deflector roller of the paper feeding device and / or the paper receiving device, and the diameter and spacing of the rivets are matched with the rivet holes provided on the edge of the target paper. The counting disk is disposed on the outside of the steering roller and is parallel to the end face of the steering roller. The counting disk and the steering roller are fixedly connected. The outer edge of the counting disk is evenly provided with a plurality of counting slits, and the counting slits are provided in a one-to-one correspondence with the rivets; the laser beam sensor is provided on the outer edge of the counting disk and is used to count the counting slits; The laser beam sensor is connected to the system control unit and transmits the counting data to the system control unit.

3. The target changer with front and rear winding and precise paper feeding as described in claim 2, characterized in that, The laser beam sensor includes a U-shaped probe; The outer edge of the counting disk is inserted into the opening of the U-shaped probe; the U-shaped probe is fixedly connected to the paper feeding box and / or the paper receiving box; A laser emitter is located on one side of the opening of the U-shaped probe, and a laser receiver is located on the other side. When any counting slit of the counting disk rotates to the U-shaped probe, the laser receiver receives a laser signal to achieve counting.

4. The target changer with front and rear winding and precise paper feeding as described in claim 1, characterized in that, The backplate assembly includes a backplate support frame, two quick-release support rods, a backplate, and a guide shaft; The two quick-release support rods are respectively located on both sides of the back plate and are fixedly connected to the back plate; the guide shaft is located on the top of the back plate, and the two ends of the guide shaft are rotatably connected to the quick-release support rods at the corresponding ends. The back panel support frame includes two vertical support rods and one horizontal support rod; the two vertical support rods are respectively located at both ends of the horizontal support rod and are fixedly connected; the bottom of the two vertical support rods is fixedly connected to the upper surface of the paper feeding box and the paper receiving box, and the top is provided with a longitudinal insertion hole; the two quick-release support rods are respectively inserted into the longitudinal insertion hole.

5. The target changer with front and rear winding and precise paper feeding as described in claim 1, characterized in that, The target changing machine also includes a shell receiving box located on the rear side of the back plate.

6. The target changer with front and rear winding and precise paper feeding as described in claim 5, characterized in that, The ammunition receiving box is a closed rectangular box with outward-folding plate-shaped insert ears on both sides of the front wall; the back plate has two vertical and parallel insert slots on the rear side, the insert slots are open at the top and open inward; the insert ears are inserted into the insert slots on the corresponding sides from top to bottom. The front wall is made of a bullet-penetrable material, and the rear wall is made of a bulletproof material.

7. The target changer with front and rear winding and precise paper feeding as described in claim 1, characterized in that, The target-changing machine also includes a lightweight bulletproof plate; The lightweight bulletproof plate is located on the front wall of the cardboard box and is made of bulletproof material.

8. The target changer with front and rear winding and precise paper feeding as described in claim 6 or 7, characterized in that, The bulletproof material includes a rubber bullet-absorbing plate and a bulletproof steel plate, which are stacked sequentially along the direction in which the bullet is fired.

9. A firing system, characterized in that, The system includes a target changer with front and rear paper feeding and precise paper feeding as described in any one of claims 1-8, an image acquisition device located in front of the target changer, and a sound-emitting device located on the target changer; the image acquisition device acquires real-time shooting images and transmits them to the system control unit of the target changer for processing to obtain real-time shooting scores, and the sound-emitting device announces the scores.

Images