Air nail gun with buffering function

Abstract

The invention belongs to the technical field of pneumatic tools, and particularly relates to an air nail gun with a buffering function, which comprises a shell, a cartridge holder, a piston and a firing pin, the buffering cushion is connected to the lower end of the air cylinder in the shell and abuts against the gun nozzle on the shell, and two cavities are further formed in the buffering cushion; the buffer pad is composed of a fixing block and a rubber pad, the rubber pad is connected to the upper end of the fixing block, and the cavity is formed in the fixing block; the buffer mechanism comprises a clamping part arranged in the cavity, an annular groove is formed in the upper portion of the gun nozzle of the shell, a driving part is arranged in the annular groove, and a jacking part is arranged between the driving part and the clamping part; the cooling mechanism comprises a liquid conveying part and a recycling part which are arranged on the side face of the shell; and the linkage mechanism is arranged at the lower end of the shell. Through dynamic buffer adjustment, efficient heat dissipation and intelligent control, the adaptability of the air nail gun is improved, and the service life is prolonged.

Description

Technical Field

[0001] The present invention belongs to the technical field of pneumatic tools, and particularly relates to a pneumatic nail gun with a buffering function. Background Art

[0002] Pneumatic nail guns can be used for connecting container pallets, large wooden packaging boxes, manufacturing fences, connecting wooden structures of houses, wooden furniture, and other wooden structures. They can quickly staple and save labor costs. When in use, pneumatic nail guns generally continuously fire multiple rows of nails. The buffer pad is made of rubber material. Each time the nails are shot out, the striker will hit the buffer pad. The buffer pad will deform after being impacted. The buffer pad relies on its own deformation to relieve the impact from the striker. Heat will be generated during the deformation process. And the inside of the shell of the pneumatic nail gun is a closed cavity. The heat generated by the collision cannot be dissipated to the outside. The collision will cause the buffer pad to heat up, accelerating the aging of the buffer pad and accelerating the damage of the buffer pad. The service life of the buffer pad is short. Once the buffer pad is damaged, the product function will fail, and it is necessary to find a professional or go to a professional maintenance point for replacement, which is troublesome. In order to dissipate heat from the buffer pad, a heat dissipation component is generally arranged at the buffer pad:

[0003] For example, a cooling device for a buffer pad of a pneumatic nail gun with the Chinese patent publication number: CN105666416B. This pneumatic nail gun cools the buffer pad by setting a cooling device, so that the buffer pad is kept at a suitable temperature. The buffer pad is not easy to age and is not easy to damage. The service life of the buffer pad is long, and the service life of the pneumatic nail gun is long.

[0004] For pneumatic nail guns of the above-mentioned type, although they can cool the buffer pad, there are still some deficiencies in the actual application process:

[0005] Uncontrollable buffering: Whether stapling hard plates (such as metals, hardwoods) or soft materials (such as foams, corks), the buffer pad is always in a working state, resulting in low stapling efficiency for hard materials (the impact force is weakened), while soft materials are prone to penetration or deformation of the nail body due to overshoot.

[0006] Serious heat accumulation: Frequent friction causes the temperature of the buffer pad to rise (it is shown that the temperature rise of the rubber buffer pad can reach 80 - 120 °C), accelerating aging and reducing the resilience performance (it is pointed out that the service life of traditional buffer pads is only 3000 - 5000 times).

[0007] Passive cooling: Existing cooling devices (such as the liquid cooling system) need to run continuously and cannot be dynamically adjusted according to the working conditions, resulting in high energy consumption. Summary of the Invention

[0008] The purpose of the present invention is to provide a pneumatic nail gun with a buffering function. Through dynamic buffering adjustment, an efficient heat dissipation system, and intelligent control, the adaptability of the pneumatic nail gun is improved, its service life is extended, and the operation is simplified.

[0009] The technical solutions adopted by the present invention are specifically as follows:

[0010] A pneumatic nail gun with a buffering function, including a housing. A magazine is provided at the lower end of the housing, and one end of the magazine is connected to the nozzle on the housing. A piston is slidably connected in the cylinder inside the housing, and a firing pin is fixedly connected to the piston;

[0011] A buffer pad, which is connected to the lower end of the cylinder inside the housing and abuts against the nozzle on the housing. Two cavities are also opened in the buffer pad; the buffer pad is composed of a fixed block and a rubber pad. The rubber pad is connected to the upper end of the fixed block, and the cavity is opened in the fixed block;

[0012] A buffering mechanism, which includes a clamping part arranged in the cavity. An annular groove is opened above the nozzle of the housing, and a driving part is arranged in the annular groove. A jacking part is arranged between the driving part and the clamping part;

[0013] A cooling mechanism, which includes an infusion part and a recovery part arranged on the side of the housing;

[0014] A linkage mechanism, which is arranged at the lower end of the housing.

[0015] In a preferred solution, the clamping part includes a spring. The spring is fixedly connected in the cavity, and the other end of the spring is fixedly connected to a force-receiving block. One side of the force-receiving block is fixedly connected to a movable rod, and the movable rod extends outside the cavity. The end of the movable rod located outside the cavity is fixedly connected to a clamping block, and semi-circular protrusions are connected in an array on the clamping block. A connecting pipe communicates between the two clamping blocks. Among them, the interior of the right clamping block is divided into two chambers by a partition.

[0016] In a preferred solution, the driving part includes a slide rail. The slide rail is fixedly connected in the annular groove opened on the housing. A ring is rotatably connected to the slide rail. A toothed ring is fixedly connected to the inner circle of the ring. A through groove is opened on the front of the housing, and a part of the ring penetrates through the through groove and out of the housing.

[0017] In a preferred embodiment, the jacking part includes a rotating rod. Both of the two rotating rods are rotatably connected in an annular groove formed in the housing through bearings. A threaded block is sleeved on the rotating rod. The top surface of the threaded block is fixedly connected with a lifting rod, and the upper end of the lifting rod penetrates into the cavity. The upper end of the lifting rod is fixedly connected with a cross bar. A rotating roller is rotatably connected to the cross bar. A transmission gear is fixedly installed at the lower end of the rotating rod. The lower end of one of the rotating rods penetrates to the outside of the housing and is fixedly installed with a first bevel gear.

[0018] In a preferred embodiment, the outer wall of the rotating rod is provided with a thread adapted to the threaded block, and the threaded block is fixedly connected with the rotating rod.

[0019] In a preferred embodiment, the infusion part includes a first hollow cylinder. The first hollow cylinder is fixedly connected to the side surface of the housing. The upper end of the first hollow cylinder is fixedly connected with an air pipe, and the air pipe is communicated with the return air storage cavity on the housing. The bottom surface of the inner cavity of the first hollow cylinder is fixedly connected with a first compression spring. The upper end of the first compression spring is fixedly connected with a first piston plate. The lower end of the first hollow cylinder is communicated with a liquid inlet pipe, and the liquid inlet pipe extends into the housing and is communicated with one of the chambers on the right clamping block. A first one-way valve is arranged on the liquid inlet pipe.

[0020] In a preferred embodiment, the recovery part includes a second hollow cylinder. The second hollow cylinder is fixedly connected to the side surface of the housing. The top surface of the inner cavity of the second hollow cylinder is fixedly connected with a second compression spring. The lower end of the second compression spring is fixedly connected with a second piston plate. The lower end of the second hollow cylinder is communicated with a return pipe, and the return pipe extends into the housing and is communicated with one of the chambers on the right clamping block.

[0021] In a preferred embodiment, an infusion pipe is fixedly connected between the first hollow cylinder and the second hollow cylinder. A second one-way valve is arranged on the infusion pipe.

[0022] In a preferred embodiment, a knob valve is arranged on the air pipe. A first linkage gear is fixedly installed on the rotating shaft of the knob valve.

[0023] In a preferred embodiment, the linkage mechanism includes a round rod. The round rod is rotatably connected to the bottom surface of the housing through a bearing. A second bevel gear is fixedly installed at one end of the round rod. A second linkage gear is fixedly installed at the other end of the round rod.

[0024] The technical effects achieved by the present invention are:

[0025] Through the coordinated action of the clamping part, the driving part, and the jacking part, the present invention realizes the dynamic adjustment of the impact force of the firing pin. When nailing hard materials, the contact area between the clamping block and the firing pin can be reduced to ensure sufficient impact force for smooth nailing; while when dealing with soft materials, the contact area is increased to enhance the buffering effect and avoid excessive penetration or deformation. This feature significantly improves the adaptability and efficiency of the tool, reduces the rework rate, and enhances the work quality;

[0026] To solve the problem that the temperature of the buffer pad of traditional pneumatic nail guns increases due to frequent impacts, accelerating its aging, the present invention introduces a cooling mechanism. It includes an infusion part and a recovery part, uses the coolant circulation to carry away heat, and further reduces the coolant temperature through the thermoelectric cooler provided on the second hollow cylinder. In addition, the linkage mechanism can automatically adjust the coolant flow according to actual needs to ensure the best heat dissipation effect. This not only extends the service life of the buffer pad, but also ensures its stable performance and reduces the maintenance cost; by dynamically adjusting the heat dissipation performance, it can effectively prevent the rubber convex strip from accelerating aging due to overheating, and at the same time avoid the rubber convex strip from hardening due to excessive cooling, ensuring that the rubber convex strip maintains within an appropriate temperature range to guarantee the buffering performance and the service life of the rubber convex strip;

[0027] The present invention connects the knob valve with other key components (such as the first bevel gear, the second bevel gear, etc.) through the linkage mechanism to achieve automatic control. Simply rotating the ring can adjust both the buffering strength and the cooling intensity at the same time, greatly simplifying the operation process. This intelligent design not only improves work efficiency, but also provides a more convenient operation experience for users. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is the left side view of the whole of the present invention;

[0029] Figure 2 is the right side view of the whole of the present invention;

[0030] Figure 3 is the partial structural schematic diagram of the present invention;

[0031] Figure 4 is the present invention Figure 3 's bottom view;

[0032] Figure 5 is the present invention Figure 4 's cross-sectional view taken along line A-A;

[0033] Figure 6 is the present invention Figure 4 's cross-sectional view taken along line B-B;

[0034] Figure 7 is the present invention Figure 6 's front view;

[0035] Figure 8 It is a schematic connection diagram of the buffer mechanism, cooling mechanism and linkage mechanism of the present invention;

[0036] Figure 9 It is a schematic connection diagram of the clamping part and the jacking part of the present invention;

[0037] Figure 10 It is the present invention Figure 9 of the front sectional view;

[0038] Figure 11 It is a schematic internal structure diagram of the first hollow cylinder and the second hollow cylinder of the present invention.

[0039] In the drawings, the list of components represented by each reference numeral is as follows:

[0040] 1. Housing; 2. Magazine; 3. Piston; 4. Firing pin; 5. Buffer pad; 51. Cavity; 6. Buffer mechanism; 7. Cooling mechanism; 8. Linkage mechanism; 9. Knob valve; 10. First linkage gear;

[0041] 61. Clamping part; 62. Driving part; 63. Jacking part;

[0042] 611. Spring; 612. Force-receiving block; 613. Movable rod; 614. Clamping block; 615. Connecting pipe;

[0043] 621. Slide rail; 622. Ring; 623. Tooth ring; 624. Through groove;

[0044] 631. Rotating rod; 632. Threaded block; 633. Lifting rod; 634. Cross bar; 635. Rotating roller; 636. Transmission gear; 637. First bevel gear;

[0045] 71. Infusion part; 72. Recycling part; 73. Infusion pipe; 74. Second one-way valve;

[0046] 711. First hollow cylinder; 712. Air pipe; 713. First compression spring; 714. First piston plate; 715. Liquid inlet pipe; 716. First one-way valve;

[0047] 721. Second hollow cylinder; 722. Second compression spring; 723. Second piston plate; 724. Return pipe;

[0048] 81. Round rod; 82. Second bevel gear; 83. Second linkage gear. Detailed implementation manners

[0049] To make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given with reference to the accompanying drawings of the specification.

[0050] In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention. However, the present invention may be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0051] Secondly, as used herein, "an embodiment" or "embodiments" refers to specific features, structures, or characteristics that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an individual or alternative embodiment that is mutually exclusive with other embodiments.

[0052] Furthermore, the present invention is described in detail in conjunction with schematic diagrams. When describing the embodiments of the present invention in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally out of proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0053] Please refer to the attached Figures 1 to 5 As shown, this embodiment provides a pneumatic nail gun with a buffering function, including a housing 1. A magazine 2 is provided at the lower end of the housing 1, and one end of the magazine 2 is connected to the nozzle on the housing 1. A piston 3 is slidably connected in the cylinder in the housing 1, and a firing pin 4 is fixedly connected to the piston 3;

[0054] A buffer pad 5 is connected to the lower end of the cylinder in the housing 1 and abuts against the nozzle on the housing 1. Two cavities 51 are also formed in the buffer pad 5; the buffer pad 5 is composed of a fixed block and a rubber pad. The rubber pad is connected to the upper end of the fixed block, and the cavity 51 is formed in the fixed block;

[0055] A buffer mechanism 6, the buffer mechanism 6 includes a clamping part 61 arranged in the cavity 51. An annular groove is formed above the nozzle of the housing 1, and a driving part 62 is arranged in the annular groove. A lifting part 63 is arranged between the driving part 62 and the clamping part 61;

[0056] A cooling mechanism 7, the cooling mechanism 7 includes an infusion part 71 and a recovery part 72 arranged on the side of the housing 1;

[0057] A linkage mechanism 8 is arranged at the lower end of the housing 1.

[0058] The structure of the nail gun housing 1 is not an innovation of the present invention. The detailed structure of the housing 1 belongs to the general knowledge in the prior art and will not be elaborated here. Regarding the structure and working principle of the nail gun housing, reference can be made to the relevant nail gun working principle publicly available on Baidu: https: / / baijiahao.baidu.com / s? id=1747446215155848135&wfr=spider&for=pc).

[0059] Secondly, please refer to again Figures 5 to 10 , the clamping part 61 includes a spring 611. The spring 611 is fixedly connected inside the cavity 51. The other end of the spring 611 is fixedly connected with a force-receiving block 612. One side of the force-receiving block 612 is fixedly connected with a movable rod 613, and the movable rod 613 extends to the outside of the cavity 51. One end of the movable rod 613 located outside the cavity 51 is fixedly connected with a clamping block 614, and semicircular protrusions are connected to the clamping block 614 in an array. A connecting pipe 615 communicates between the two clamping blocks 614. Among them, the interior of the right clamping block 614 is divided into two chambers by a partition.

[0060] Thirdly, please refer to together Figures 3 to 10 , the driving part 62 includes a slide rail 621. The slide rail 621 is fixedly connected in the annular groove opened on the housing 1. A ring 622 is rotatably connected to the slide rail 621. A toothed ring 623 is fixedly connected to the inner ring of the ring 622. A through groove 624 is opened on the front surface of the housing 1, and a part of the ring 622 penetrates through the housing 1 from the through groove 624.

[0061] In this embodiment, digital markings are provided on the outer side of the ring 622. When rotated to the right, the numbers increase in sequence, symbolizing the enhancement of the buffering force; relatively, when rotated to the left, the numbers gradually decrease, representing the weakening of the buffering force.

[0062] Secondly, please refer to again Figure 5 、 Figure 9 and Figure 10 , the jacking part 63 includes a rotating rod 631. Both rotating rods 631 are rotatably connected in the annular groove opened on the housing 1 through bearings. A threaded block 632 is sleeved on the rotating rod 631. The top surface of the threaded block 632 is fixedly connected with a lifting rod 633, and the upper end of the lifting rod 633 penetrates into the cavity 51. The upper end of the lifting rod 633 is fixedly connected with a cross bar 634. A rotating roller 635 is rotatably connected to the cross bar 634. A transmission gear 636 is fixedly installed at the lower end of the rotating rod 631. The lower end of one of the rotating rods 631 penetrates to the outside of the housing 1 and is fixedly installed with a first bevel gear 637. Among them, threads adapted to the threaded block 632 are provided on the outer wall of the rotating rod 631, and the threaded block 632 is fixedly connected to the rotating rod 631.

[0063] In this embodiment, when operating the pneumatic nail gun, high-pressure gas enters the cylinder of the housing 1 through the air inlet, and then pushes the piston 3 and the firing pin 4 to strike the strip nails, realizing the ejection of the strip nails. According to the hardness of the nailed object, the operating state of the buffer mechanism 6 is adjusted. In the initial state of the nail gun (as Figure 5 shown), the clamping block 614 does not apply pressure to the firing pin 4. At this time, the contact area between the convex strip and the firing pin 4 is small, so there will be no excessive buffering, so as to enhance the impact force of the firing pin 4 and ensure that the strip nails can be smoothly nailed into the hard material. In this state, when the piston 3 descends to the lowest point and contacts the buffer pad 5, buffering occurs. When nailing softer materials is required, through the through groove 624 contacting the ring 622, the ring 622 is toggled to rotate to the right along the slide rail 621. The rotation of the ring 622 drives the gear ring 623 to rotate. The gear ring 623 meshes with the transmission gear 636, prompting the rotating rod 631 to rotate. The rotating rod 631 is threadedly connected to the wire block 632. During its rotation, the wire block 632 will move upward. The upward movement of the wire block 632 drives the lifting rod 633 to move upward. The upward movement of the lifting rod 633 drives the cross bar 634 and the roller 635 to move upward. The upward movement of the roller 635 presses the force receiving block 612, causing the two force receiving blocks 612 to approach each other. The mutual approach of the force receiving blocks 612 drives the movable rod 613 and the clamping block 614 to approach each other. The firing pin 4 is clamped by the two clamping blocks 614. After the clamping block 614 clings to the side of the firing pin 4, the rubber convex strip on the side will be deformed by force, increasing the contact area between the rubber convex strip and the firing pin 4, thereby enhancing the buffering effect. On the contrary, if the ring 622 is toggled to the left, the two clamping blocks 614 will move away from each other, thereby reducing the buffering effect. By dynamically adjusting the buffering mode, the nailing quality of both hard and soft materials can be taken into account, effectively reducing the rework rate.

[0064] Please refer to again Figure 2 、 Figure 3 、 Figure 8 and Figure 11 , the infusion part 71 includes a first hollow cylinder 711. The first hollow cylinder 711 is fixedly connected to the side of the housing 1. The upper end of the first hollow cylinder 711 is fixedly connected with an air pipe 712, and the air pipe 712 communicates with the return air storage cavity on the housing 1. The inner cavity bottom surface of the first hollow cylinder 711 is fixedly connected with a first compression spring 713. The upper end of the first compression spring 713 is fixedly connected with a first piston plate 714. The lower end of the first hollow cylinder 711 communicates with a liquid inlet pipe 715, and the liquid inlet pipe 715 extends into the housing 1 and communicates with one of the chambers on the right clamping block 614. A first one-way valve 716 is arranged on the liquid inlet pipe 715.

[0065] Please refer to again Figure 2 、 Figure 3 、 Figure 8 and Figure 11The recovery part 72 includes a second hollow cylinder 721, which is fixedly connected to the side of the housing 1. A second compression spring 722 is fixedly connected to the top surface of the inner cavity of the second hollow cylinder 721. A second piston plate 723 is fixedly connected to the lower end of the second compression spring 722. A return pipe 724 is connected to the lower end of the second hollow cylinder 721. The return pipe 724 extends to the inside of the housing 1 and is connected to one of the chambers on the right clamping block 614. When the coolant in the second hollow cylinder 721 increases, the second piston plate 723 is squeezed to move upward and squeeze the second compression spring 722. When the coolant in the second hollow cylinder 721 decreases, the second piston plate 723 is pushed downward by the restoring force of the second compression spring 722.

[0066] In this embodiment, after entering the housing 1, the gas will flow to the return air storage chamber, and then enter the first hollow cylinder 711 through the air pipe 712. As the air pressure at the top of the first hollow cylinder 711 gradually increases, the first piston plate 714 is pushed downward to compress the coolant in the cylinder. The compressed coolant flows into a chamber of the right clamp block 614 through the liquid inlet pipe 715, and then transferred to the inner cavity of the left clamp block 614 through the connecting pipe 615. Subsequently, the coolant flows into another chamber of the right clamp block 614 through the connecting pipe 615 on the other side, and the chamber is connected to the second hollow cylinder 721 through the return pipe 724, and finally the coolant is collected in the second hollow cylinder 721.

[0067] After the nail shooting operation is completed, the air pressure in the return air storage chamber on the housing 1 drops, and the air pressure in the first hollow cylinder 711 also decreases. At this time, the reset force of the first compression spring 713 will push the first piston plate 714 to move upward to perform the liquid extraction operation. When the first piston plate 714 moves upward, the coolant in the second hollow cylinder 721 is pumped back to the first hollow cylinder 711 through the infusion tube 73, completing the circulation of the coolant. Through this circulation, the coolant can take away the heat on the clamp 614, preventing the clamp 614 from overheating and accelerating aging.

[0068] In addition, a first one-way valve 716 is installed on the liquid inlet pipe 715, and its function is to only allow the coolant to flow out of the first hollow cylinder 711 through the liquid inlet pipe 715, and prevent the coolant from flowing back from the liquid inlet pipe 715 to the first hollow cylinder 711. A second one-way valve 74 is installed on the liquid delivery pipe 73, and its function is to only allow the coolant to enter the first hollow cylinder 711, and prevent the coolant from flowing out of the first hollow cylinder 711. Specifically, when the first piston plate 714 moves downward, the compressed coolant can only flow out through the liquid inlet pipe 715; and when the first piston plate 714 moves upward to pump liquid, the coolant can only enter through the liquid delivery pipe 73.

[0069] Please refer again Figure 11, a infusion tube 73 is fixedly connected between the first hollow cylinder 711 and the second hollow cylinder 721, and a second one-way valve 74 is arranged on the infusion tube 73.

[0070] In this embodiment, a semiconductor refrigerating sheet (not shown in the figure) is arranged on the second hollow cylinder 721 for cooling the coolant flowing back.

[0071] Please refer to again Figure 11 , a knob valve 9 is arranged on the air pipe 712, and a first linkage gear 10 is fixedly installed on the rotating shaft of the knob valve 9.

[0072] In this embodiment, the function of the knob valve 9 is to control the on-off of the air pipe 712. When it is necessary to inject gas into the first hollow cylinder 711, the knob valve 9 can be rotated to open the air pipe 712 and allow the gas to enter the first hollow cylinder 711 through the air pipe 712. When the gas injection is not required, the knob valve 9 can be rotated in the reverse direction to close the air pipe 712. In addition, the design of the first linkage gear 10 is linked with other components to achieve automatic control, improving the use efficiency and convenience of the pneumatic nail gun.

[0073] Please refer to again Figure 5 , the linkage mechanism 8 includes a round rod 81. The round rod 81 is rotatably connected to the bottom surface of the housing 1 through a bearing. One end of the round rod 81 is fixedly installed with a second bevel gear 82, and the other end of the round rod 81 is fixedly installed with a second linkage gear 83.

[0074] In this embodiment, when the rotating rod 631 rotates, it drives the first bevel gear 637 to rotate accordingly. The first bevel gear 637 meshes with the second bevel gear 82, thereby driving the transmission of the round rod 81. The rotation of the round rod 81 drives the second linkage gear 83, and the first linkage gear 10 is connected to the second linkage gear 83 by a toothed belt, ultimately causing the rotation of the knob valve 9. The function of the knob valve 9 is to regulate the flow rate of gas entering the first hollow cylinder 711 along the air pipe 712. Specifically, when the ring 622 rotates to the right by a large angle, the rotation angle of the rotating rod 631 increases correspondingly, and the rotation angles of the round rod 81 and the first linkage gear 10 also increase. At this time, the opening of the knob valve 9 becomes larger, causing more gas to enter the first hollow cylinder 711 along the air pipe 712 within a constant time. Therefore, the air pressure at the upper end of the first hollow cylinder 711 is greater. Correspondingly, the downward stroke of the first piston plate 714 increases, and the amount of coolant squeezed also increases. Since the storage capacities of the inner cavity of the clamping block 614, the connecting pipe 615, the liquid inlet pipe 715, and the return pipe 724 are constant, the more coolant is squeezed out within a constant time, the faster its flow rate, thereby improving the heat dissipation efficiency. Conversely, if the ring 622 rotates to the left, the opening of the knob valve 9 decreases, the amount of gas entering the upper end of the first hollow cylinder 711 decreases, and the flow rate of the coolant will also slow down accordingly, and the heat dissipation effect will be reduced accordingly.

[0075] It should be noted that in the initial state (as Figure 5 shown), the contact area between the clamping block 614 and the firing pin 4 is small. At this time, the knob valve 9 is in a fully closed state, and gas cannot enter the air pipe 712, so the coolant will not flow. Only when heat dissipation is required for the clamping block 614 after it comes into contact with the firing pin 4, the knob valve 9 will open; as the rotation angle of the ring 622 increases to the right, the contact between the clamping block 614 and the firing pin 4 will be closer, and at this time, the cooling effect will increase.

[0076] The purpose to be achieved here is: when the friction coefficient between the firing pin 4 and the rubber convex strip on the clamping block 614 increases, the temperature generated by friction increases accordingly. At this time, the heat dissipation performance needs to be improved; conversely, when the friction coefficient decreases and the temperature generated by friction decreases, the heat dissipation performance needs to be reduced. By dynamically adjusting the heat dissipation performance, it can effectively prevent the rubber convex strip from accelerating aging due to overheating, and at the same time avoid hardening of the rubber convex strip caused by excessive cooling, ensuring that the rubber convex strip is maintained within a suitable temperature range to guarantee the buffering performance and the service life of the rubber convex strip.

[0077] The working principle of the present invention is as follows:

[0078] Basic working principle: High-pressure gas enters the cylinder inside the nail gun housing 1 through the air inlet, pushing the piston 3 and the firing pin 4 downward to strike the row of nails and shoot them out.

[0079] Working principle of the buffer mechanism 6:

[0080] The buffer pad 5 is located at the lower end of the cylinder and is used for buffering when the piston 3 descends to the lowest point.

[0081] When it is necessary to adjust the buffering force to adapt to materials of different hardness, it can be adjusted by rotating the ring 622. Rotating to the right increases the buffering force, and rotating to the left decreases the buffering force.

[0082] The rotation of the ring 622 drives the rotation of the gear ring 623, which in turn causes the rotation of the rotating rod 631, making the wire block 632 move upward, thereby driving the lifting rod 633, the cross bar 634, and the roller 635 to rise, pressing the force-receiving block 612 to make the two clamping blocks 614 approach each other, clamping the firing pin 4, and adjusting the buffering effect by changing the contact area between the rubber convex strip and the firing pin 4.

[0083] Working principle of the cooling mechanism 7:

[0084] The coolant is pressed into the inner cavity of the clamping block 614 through the first hollow cylinder 711 of the liquid infusion part 71, then flows to the inner cavity of the other clamping block 614 through the connecting pipe 615, and finally returns to the second hollow cylinder 721 of the recovery part 72 through the return pipe 724.

[0085] With the completion of the nail shooting operation, the air pressure in the return air storage cavity on the housing 1 drops, and the air pressure in the first hollow cylinder 711 also decreases. The first compression spring 713 resets and pushes the first piston plate 714 to move upward, performing the liquid pumping operation to realize the circulating flow of the coolant.

[0086] The heat on the clamping block 614 is carried away through the circulating flow of the coolant, preventing the clamping block 614 from overheating and accelerating aging, and the flow rate of the coolant is controlled by the knob valve 9 to adjust the heat dissipation efficiency.

[0087] Function of the linkage mechanism 8:

[0088] The rotation of the rotating rod 631 drives the first bevel gear 637 to rotate accordingly. The first bevel gear 637 meshes with the second bevel gear 82, driving the transmission round rod 81 to rotate, and further driving the second linkage gear 83 to rotate.

[0089] The second linkage gear 83 is connected to the first linkage gear 10 through a toothed belt, thereby causing the rotation of the knob valve 9, adjusting the flow rate of the gas entering the first hollow cylinder 711 along the air pipe 712, and affecting the flow rate of the coolant and the heat dissipation efficiency.

[0090] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention, unless otherwise specified and limited, are implemented according to the conventional means in the art.

Claims

1. A pneumatic nail gun with a buffering function, characterized in that: It includes a housing (1), a magazine (2) is provided at the lower end of the housing (1), and one end of the magazine (2) is connected to the muzzle on the housing (1). A piston (3) is slidably connected in the cylinder in the housing (1), and a firing pin (4) is fixedly connected to the piston (3); A buffer pad (5), the buffer pad (5) is connected to the lower end of the cylinder in the housing (1) and abuts against the muzzle on the housing (1). Two cavities (51) are also provided in the buffer pad (5); The buffer pad (5) is composed of a fixed block and a rubber pad. The rubber pad is connected to the upper end of the fixed block, and the cavity (51) is provided in the fixed block; A buffer mechanism (6), the buffer mechanism (6) includes a clamping part (61) arranged in the cavity (51). An annular groove is provided above the muzzle of the housing (1), and a driving part (62) is arranged in the annular groove. A jacking part (63) is arranged between the driving part (62) and the clamping part (61); A cooling mechanism (7), the cooling mechanism (7) includes an infusion part (71) and a recovery part (72) arranged on the side of the housing (1); A linkage mechanism (8), the linkage mechanism (8) is arranged at the lower end of the housing (1).

2. The pneumatic nail gun with a buffering function according to claim 1, characterized in that: The clamping part (61) includes a spring (611), the spring (611) is fixedly connected in the cavity (51), the other end of the spring (611) is fixedly connected with a force-bearing block (612), one side of the force-bearing block (612) is fixedly connected with a movable rod (613), and the movable rod (613) extends outside the cavity (51). The end of the movable rod (613) located outside the cavity (51) is fixedly connected with a clamping block (614), and semi-circular convex strips are connected in an array on the clamping block (614). A connecting pipe (615) is communicated between the two clamping blocks (614). Among them, the interior of the right clamping block (614) is divided into two chambers by a partition board.

3. A pneumatic nail gun with a buffering function according to claim 1, characterized in that: The driving part (62) includes a slide rail (621), the slide rail (621) is fixedly connected in the annular groove opened on the housing (1), a ring (622) is rotatably connected on the slide rail (621), a gear ring (623) is fixedly connected to the inner ring of the ring (622), a through groove (624) is opened on the front surface of the housing (1), and a part of the ring (622) penetrates out of the housing (1) from the through groove (624).

4. A pneumatic nail gun with a buffering function according to claim 1, wherein: The jacking part (63) includes a rotating rod (631), both of the two rotating rods (631) are rotatably connected in the annular groove opened on the housing (1) through bearings. A thread block (632) is sleeved on the rotating rod (631). The top surface of the thread block (632) is fixedly connected with a lifting rod (633), and the upper end of the lifting rod (633) penetrates into the cavity (51). The upper end of the lifting rod (633) is fixedly connected with a cross bar (634). A rotating roller (635) is rotatably connected on the cross bar (634). A transmission gear (636) is fixedly installed at the lower end of the rotating rod (631). The lower end of one of the rotating rods (631) penetrates to the outside of the housing (1) and a first bevel gear (637) is fixedly installed.

5. The pneumatic nail gun with a buffering function according to claim 4, wherein: The outer wall of the rotating rod (631) is provided with threads adapted to the wire block (632), and the wire block (632) is fixedly connected to the rotating rod (631).

6. The pneumatic nail gun with a buffering function according to claim 2, characterized in that: The infusion part (71) includes a first hollow cylinder (711), the first hollow cylinder (711) is fixedly connected to the side surface of the housing (1), the upper end of the first hollow cylinder (711) is fixedly connected with an air pipe (712), and the air pipe (712) communicates with the return air storage cavity on the housing (1). The bottom surface of the inner cavity of the first hollow cylinder (711) is fixedly connected with a first compression spring (713), the upper end of the first compression spring (713) is fixedly connected with a first piston plate (714), the lower end of the first hollow cylinder (711) communicates with a liquid inlet pipe (715), and the liquid inlet pipe (715) extends into the housing (1) and communicates with one of the chambers on the right clamping block (614). A first one-way valve (716) is arranged on the liquid inlet pipe (715).

7. A pneumatic nail gun with a buffering function according to claim 6, characterized in that: The recovery part (72) includes a second hollow cylinder (721), the second hollow cylinder (721) is fixedly connected to the side surface of the housing (1), the top surface of the inner cavity of the second hollow cylinder (721) is fixedly connected with a second compression spring (722), the lower end of the second compression spring (722) is fixedly connected with a second piston plate (723), the lower end of the second hollow cylinder (721) communicates with a return pipe (724), and the return pipe (724) extends into the housing (1) and communicates with one of the chambers on the right clamping block (614).

8. A pneumatic nail gun with a buffering function according to claim 7, characterized in that: An infusion pipe (73) is fixedly connected between the first hollow cylinder (711) and the second hollow cylinder (721), and a second one-way valve (74) is arranged on the infusion pipe (73).

9. The pneumatic nail gun with a buffering function according to claim 6, wherein: A knob valve (9) is arranged on the air pipe (712), and a first linkage gear (10) is fixedly installed on the rotating shaft of the knob valve (9).

10. A pneumatic nail gun with a buffering function according to claim 1, characterized in that: The linkage mechanism (8) includes a round rod (81), the round rod (81) is rotatably connected to the bottom surface of the housing (1) through a bearing, a second bevel gear (82) is fixedly installed at one end of the round rod (81), and a second linkage gear (83) is fixedly installed at the other end of the round rod (81).

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