Automatic assembling equipment and method for nail shooting pills and pill hubs

Abstract

The invention relates to the technical field of nail-shooting pill assembling, and discloses automatic assembling equipment for nail-shooting pills and pill hubs, which comprises a nail-shooting pill feeding mechanism, a pill hub feeding mechanism and a press-fitting system, and the press-fitting system comprises a power conveying mechanism, a preassembling alignment mechanism, a cover plate mechanism, a turning plate mechanism and a press-fitting mechanism; the nail-shooting pill feeding mechanism conveys a tool plate and orderly arranges nail-shooting pills on the tool plate with the tips facing upwards, the tool plate is placed at the initial end of the press-fitting system, and the pill hub feeding mechanism is used for arranging pill hubs to the position above the tool plate; the pre-assembling alignment mechanism and the press-fitting mechanism are matched to press the nail shooting pills into the pill hub for multiple times; the cover plate mechanism conveys a press-fitting plate and places the press-fitting plate on the tool plate, and the plate turning mechanism turns over the tool plate and the press-fitting plate to enable the nail shooting pills and the pill hubs to fall on the press-fitting plate; the power conveying mechanism comprises a driving structure and a plurality of non-return devices arranged at equal intervals, and the driving structure intermittently conveys the nail shooting pills through the non-return devices. According to the scheme, efficient and safe assembly of the nail shooting pill and the pill hub is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of nail gun cartridge assembly, and particularly to an automatic assembly device and method for nail gun cartridges and cartridge hubs. Background Art

[0002] As a special ammunition dedicated to nail guns (also known as nail drivers), nail gun cartridges play a crucial role in modern industrial production and various construction scenarios. By generating high-pressure gas through explosion, they can shoot nails into target objects at high speed and with high precision to achieve functions such as fastening and connection. Therefore, they are widely used in many fields such as construction, interior decoration, and furniture manufacturing, becoming an important tool to improve work efficiency and ensure construction quality.

[0003] In the actual application scenarios of nail gun cartridges, to meet the requirements of convenience in transportation and use, a certain number of loose nail gun cartridges are usually assembled into cartridge hubs or clips. Currently, the assembly process of nail gun cartridges and cartridge hubs mostly relies on manual operation. Specifically, workers need to place the nail gun cartridges one by one into the holes of the cartridge hub, and then complete the press-fitting assembly with the help of press-fitting equipment. However, the efficiency of manual loading is extremely low and difficult to meet the rhythm of large-scale production and application. Due to the tiny size of nail gun cartridges, they are extremely prone to slipping during the manual placement process, causing the nail gun cartridges to scatter everywhere. This not only requires additional manpower for secondary recovery and collection but also increases the potential risk of explosion due to accidental touch.

[0004] To solve the problem of low efficiency, a Chinese patent with the publication number CN107838663A - an automatic press-fitting system for nail gun cartridge clips, by loading nail gun cartridges and clips onto a transfer plate and a fixed plate respectively, and then performing batch assembly, improves the overall production efficiency. However, multiple links of the above automatic press-fitting system still require manual participation, resulting in limited improvement in the overall efficiency. Moreover, since the nail gun cartridges are filled with gunpowder, once the operation is improper during the press-fitting process, there is a high probability of explosion, which poses a serious safety threat to the workers on-site.

[0005] In summary, the existing nail gun cartridge assembly methods have obvious deficiencies in terms of efficiency, safety, and material management, and there is an urgent need for a more efficient, safe, and reliable assembly technology to improve them. Summary of the Invention

[0006] The present invention aims to provide an automatic assembly device and method for nail gun cartridges and cartridge hubs to solve the problems of safety risks and low efficiency existing in the assembly of existing nail gun cartridges and cartridge hubs.

[0007] To achieve the above object, the present invention adopts the following technical solution: An automatic assembly device for a nail gun cartridge and a cartridge case, comprising a nail gun cartridge feeding mechanism and a cartridge case feeding mechanism located on both sides, and a pressing system arranged between the two. The pressing system includes a power transmission mechanism, a pre-assembly alignment mechanism, a cover plate mechanism, a flap mechanism, and a pressing mechanism arranged on a frame; the nail gun cartridge feeding mechanism conveys a tooling plate and neatly arranges the nail gun cartridges with their tips upward on the tooling plate. The tooling plate filled with nail gun cartridges is placed at the initial end of the pressing system. The cartridge case feeding mechanism is used to arrange the cartridge cases above the tooling plate corresponding to the nail gun cartridges; the pre-assembly alignment mechanism and the pressing mechanism cooperate to press the nail gun cartridges into the cartridge cases multiple times; the cover plate mechanism conveys a pressing plate and places the pressing plate on the tooling plate, and the flap mechanism flips the tooling plate and the pressing plate so that the nail gun cartridges and the cartridge cases fall onto the pressing plate; the power transmission mechanism includes a driving structure and a plurality of check valves arranged at equal intervals, and the driving structure intermittently conveys the nail gun cartridges through the check valves.

[0008] The principle and advantages of this solution are as follows:

[0009] 1. From the perspective of assembly automation: In this solution, by setting up a nail gun cartridge feeding mechanism, a cartridge case feeding mechanism, and multiple mechanisms in the pressing system, such as a power transmission mechanism, a pre-assembly alignment mechanism, a cover plate mechanism, a flap mechanism, and a pressing mechanism, etc., automation of a series of operations from the feeding of nail gun cartridges and cartridge cases to the pressing of nail gun cartridges and subsequent flipping is realized. Compared with the method in the background technology that mostly relies on manual operation to place nail gun cartridges into the holes of cartridge cases one by one and complete the pressing assembly with the help of pressing equipment, the number of manual participation links is greatly reduced, and true automation assembly is achieved, avoiding many inconveniences and limitations of manual operation, solving the problems of low efficiency of manual operation and various problems caused by human factors that may occur, such as the slipping of nail gun cartridges.

[0010] 2. From the perspective of assembly efficiency: On the one hand, the nail gun cartridge feeding mechanism can neatly arrange the nail gun cartridges with their tips upward on the tooling plate, and the cartridge case feeding mechanism arranges the cartridge cases above the tooling plate corresponding to the nail gun cartridges. This feeding method can achieve batch feeding, greatly saving time compared with manually placing nail gun cartridges and cartridge cases one by one. On the other hand, the driving structure in the power transmission mechanism intermittently conveys the nail gun cartridges through the check valves, and can orderly convey the nail gun cartridges to the corresponding positions for assembly; the pre-assembly alignment mechanism and the pressing mechanism cooperate to press the nail gun cartridges into the cartridge cases multiple times. This orderly and automated assembly process avoids the low efficiency during manual operation and improves the overall assembly efficiency. Moreover, this device can operate continuously. Compared with the discontinuity of manual operation, it can complete the assembly of more nail gun cartridges and cartridge cases within a unit time, meeting the requirements of large-scale production, and solving the problem in the background technology that the manual loading efficiency is extremely low and difficult to meet the rhythm of large-scale production.

[0011] 3. From the perspective of assembly safety: Since the nail gun cartridge is filled with gunpowder inside, there are significant safety hazards during the assembly process. The automated assembly equipment in this technical solution reduces manual participation and avoids the slippage phenomenon that is extremely likely to occur due to the tiny volume of the nail gun cartridge during the manual placement of the nail gun cartridge, thereby reducing the risk of accidental explosion caused by the nail gun cartridge scattered everywhere. At the same time, in the press-fitting link, this equipment performs multiple press-fittings through the cooperation of the pre-installation alignment mechanism and the press-fitting mechanism. Compared with the press-fitting link with manual participation in the background technology, it can better ensure the standardization and accuracy of the operation, reduce the possibility of explosion caused by improper operation. At the same time, multiple press-fittings can reduce the divided press-fitting pressure and avoid gunpowder explosion caused by excessive pressure, greatly improving the safety during the assembly process, ensuring the safety of on-site operators, and solving the safety threat problems brought by manual press-fitting and partial manual participation in the press-fitting of the existing automatic press-fitting system in the background technology.

[0012] Further, the pre-installation alignment mechanism includes an alignment cylinder and an alignment plate. The bottom of the alignment plate is connected with a plurality of alignment blocks, and each alignment block is provided with a number of alignment holes distributed annularly and corresponding one by one to the holes of the bullet hub on the tooling plate. The alignment holes are used to accommodate the nail gun cartridge.

[0013] Beneficial effects: During the assembly process of the nail gun cartridge, pre-positioning and alignment are combined with pre-pressing operations, greatly improving the safety of the assembly. Since the nail gun cartridge is filled with gunpowder inside, a single press-fitting in place may cause an explosion due to factors such as position deviation and uneven pressure. After the alignment mechanism accurately positions the nail gun cartridge through the alignment holes, the pre-pressing process can gradually apply pressure on the premise of ensuring the accurate alignment of the nail gun cartridge and the bullet hub. This pre-pressing method can detect the cooperation situation between the nail gun cartridge and the bullet hub in advance. If there are abnormalities, the operation can be stopped in time to avoid explosion caused by blindly pressing in place at one time. Through pre-positioning and alignment in advance, a stable and accurate basis is provided for pre-pressing, effectively reducing the risk of explosion caused by improper assembly operations and providing a strong guarantee for safe production.

[0014] Further, the press-fitting mechanism includes a press-fitting cylinder, a press-fitting block, and a supporting block. The press-fitting plate is located between the press-fitting block and the supporting block and is placed on the supporting block; protective structures are provided on the outer peripheries of the press-fitting block and the supporting block, and the protective structures are two layers of protective covers sleeved in sequence.

[0015] Beneficial effects: The two layers of protective covers sleeved in sequence in this solution can provide a powerful protective barrier. The inner protective cover can initially block the fragments and impact force generated by the explosion, and the outer protective cover further buffers and blocks the residual energy that may penetrate the inner layer, greatly reducing the harm of the explosion to the surrounding environment and personnel, effectively reducing the harm range and degree of the explosion accident, and significantly improving the safety of the press-fitting link.

[0016] Further, a drive plate is fixed to the bottom of the check valve. The check valve includes a fixed block and a check block. One end of the check block facing the initial end of the pressing system is hinged to the fixed block, and a spring is fixedly arranged between the other end and the fixed block. The check block is bent upward from the initial end to the end of the pressing system.

[0017] Beneficial effects: In the above setting, the check block is hinged to the fixed block, and a spring is provided between the other end of the check block and the fixed block. This structure enables the check block to rotate flexibly when subjected to an external force. When it is necessary to push the tooling plate, the check block returns to the initial upward-bent state under the elastic force of the spring, quickly lifts from the bottom of the tooling plate and moves forward to the next pushing position. After the pushing is completed, the check block rotates downward under the reverse pressure of the tooling plate. When the bent shape of the check block contacts the bottom of the tooling plate, it can guide the check valve to smoothly return to the initial end along a specific trajectory, preparing for the next push. The whole process is coherent and rapid, effectively avoiding the situation that the check valve is offset, stuck or interferes with other parts of the tooling plate during the retraction process, ensuring the smoothness of the retraction action, reducing the possibility of mechanical failures, making the conveying process of the tooling plate more stable and reliable, and enabling efficient reciprocating motion. Compared with the traditional structure, the conveying efficiency of the tooling plate is greatly improved.

[0018] Further, the flap mechanism includes a flap motor and a fixed fixture connected to the output shaft of the flap motor. Fixed slots for accommodating the tooling plate and the pressing plate are symmetrically arranged on the left and right of the fixed fixture; the bottom of the frame at the flap mechanism is a hollow structure.

[0019] Beneficial effects: On the one hand, the flap motor drives the fixed fixture to flip, adjusting the nail gun cartridge from the original state with the tip facing upward to the tip facing downward. When the traditional nail gun cartridge is pressed with the tip facing upward, the contact area with the cartridge hub is limited. After the tip faces downward, the bottom plane of the nail gun cartridge participates in the pressing, greatly increasing the contact area with the cartridge hub. The larger contact area makes the pressure distribution more uniform during pressing, effectively reducing problems such as damage to the nail gun cartridge and loose pressing caused by pressure concentration, greatly improving the product assembly quality, ensuring a more stable connection between the nail gun cartridge and the cartridge hub, and meeting the reliability requirements in actual use. After the nail gun cartridge is assembled with the tip facing downward, its bottom fits tightly with the cartridge hub, forming a large plane contact area. In the subsequent production process, if the assembled nail gun cartridge and cartridge hub assembly are transferred by an adsorption conveying method, the larger contact area enables the adsorption device to adsorb the assembly more stably and efficiently.

[0020] On the other hand, fixed slots are symmetrically arranged on the left and right of the fixed fixture. During the assembly process, there is no need to reverse and rotate to reset for the next flap each time, reducing unnecessary energy consumption and improving the production rhythm; the bottom of the frame at the flap mechanism is a hollow structure, avoiding flipping interference and not occupying additional space, making the equipment structure more compact.

[0021] Furthermore, the nail gun ammunition feeding mechanism includes a feeding structure and a vibrating and sorting structure. The feeding structure realizes intermittent feeding. The two ends of the vibrating and sorting structure are respectively connected with a tooling plate conveying line and a tooling plate output line. The vibrating and sorting structure includes a vibrating plate with an inclined upper surface and a front-back vibrating component that drives the vibrating plate to slide back and forth; the cartridge case feeding mechanism includes a stacking table for placing cartridge cases. A number of positioning rods are provided on the stacking table. The positioning rods cooperate with the holes of the cartridge cases. A number of cartridge cases are stacked and sleeved on the positioning rods; a lifting structure is provided at the bottom of the stacking table. A lifting hole is opened on the stacking table. The lifting hole penetrates through the stacking table and is coaxial with the cartridge cases on the stacking table. The lifting structure passes through the lifting hole to transport the cartridge cases upward.

[0022] Beneficial effects: For the nail gun ammunition feeding mechanism, the feeding structure realizes intermittent feeding and works in coordination with the vibrating and sorting structure, which can accurately control the feeding rhythm of the nail gun ammunition; the inclined vibrating plate of the vibrating and sorting structure slides back and forth under the drive of the front-back vibrating component, making the nail gun ammunition gradually arranged neatly during the vibration process and entering the tooling plate conveying line orderly, and then being transported to the subsequent process through the tooling plate output line. This process greatly improves the feeding efficiency of the nail gun ammunition. Compared with the traditional disordered feeding method, it reduces the manual sorting time and meets the demand for rapid feeding in large-scale production. At the same time, the inclined design of the vibrating plate and the front-back vibration action enable the nail gun ammunition to be naturally arranged in a specific direction relying on its own gravity and vibration force during the vibration process, improving the accuracy of the arrangement of the nail gun ammunition and reducing the subsequent assembly problems caused by incorrect arrangement.

[0023] For the cartridge case feeding mechanism, through the cooperation of the positioning rods on the stacking table and the holes of the cartridge cases, a number of cartridge cases can be accurately stacked and sleeved on the positioning rods, which not only facilitates the storage and sorting of the cartridge cases, but also ensures the stability and orderliness of the cartridge cases on the stacking table. In addition, the lifting structure at the bottom of the stacking table transports the cartridge cases upward through the lifting hole, and the lifting hole is coaxial with the cartridge cases, ensuring the stability and accuracy of the cartridge case lifting process. The lifting height and time of the cartridge cases can be accurately controlled according to the assembly rhythm, and it works closely with other links of the automatic assembly equipment to realize the automatic and accurate feeding of the cartridge cases. It reduces manual intervention and the risk of cartridge case damage or feeding error caused by improper manual operation, ensuring the stable operation of the production line.

[0024] Furthermore, it also includes a tooling plate recycling mechanism and a pressing plate recycling mechanism. The tooling plate recycling mechanism transports the tooling plate to the initial end of the nail gun ammunition feeding mechanism, and the pressing plate recycling mechanism transports the pressing plate to the initial end of the cover plate mechanism.

[0025] Beneficial effects: The above settings enable the tooling board and the press-fitting board to be reused, reducing the input quantity of the tooling board and the press-fitting board, lowering the production cost, and improving the utilization rate of resources. The two recycling mechanisms achieve the automatic recycling and circular utilization of the tooling board and the press-fitting board, eliminating the need for manual collection and handling, reducing manual intervention, and increasing the degree of automation in production, making the entire production process smoother and more efficient. Secondly, the tooling board and the press-fitting board can return to their respective initial ends in a timely manner, preparing for the next assembly process, shortening the production preparation time, improving production efficiency, and contributing to continuous and efficient production.

[0026] Based on the above-mentioned automatic assembly equipment for nail cartridges and cartridge hubs, this solution also provides an automatic assembly method for nail cartridges and cartridge hubs, including the following steps:

[0027] Step 1: Sort the nail cartridges and cartridge hubs neatly. The tips of the nail cartridges face upward in the tooling board, and then place the cartridge hubs on the nail cartridges for pre-assembly.

[0028] Step 2: Perform pre-pressing and alignment on the pre-assembled nail cartridges and cartridge hubs.

[0029] Step 3: Flip the nail cartridges and cartridge hubs so that the tips of the nail cartridges face downward.

[0030] Step 4: Perform secondary press-fitting on the nail cartridges and cartridge hubs to complete the assembly.

[0031] Furthermore, in the above Step 2, the amplitude of pre-pressing is 1 / 3 - 1 / 2 of the overall press-fitting amplitude; the press-fitting pressures in both Step 2 and Step 4 do not exceed 5t, and the press-fitting pressure in Step 2 is less than or equal to the press-fitting pressure in Step 4.

[0032] Furthermore, in the above Step 3, before flipping, a press-fitting board is placed on the cartridge hub; after flipping, the tooling board is removed and recycled.

[0033] This solution has the following beneficial effects:

[0034] 1. Improve assembly efficiency: By neatly sorting the nail cartridges and cartridge hubs separately, the pre-assembly preparation work is completed using the nail cartridge feeding mechanism and the cartridge hub feeding mechanism, saving a large amount of time for subsequent assembly. The pre-assembly step preliminarily positions the two, reducing the adjustment time during subsequent assembly. The step-by-step operations of pre-pressing alignment and secondary pressing can complete the assembly process more quickly and accurately compared to one-time pressing. Although one-time pressing is theoretically simple in steps, in actual operation, due to the need for high-precision alignment between the nail cartridge and the cartridge hub, it is difficult to accurately control the positions of the two in one operation; the nail cartridge is small in size, and even after sorting, there may be slight deviations in its initial placement state on the tooling plate, and the sleeving of the cartridge hub may also have position offsets due to factors such as mechanical errors. In this case, one-time pressing often requires multiple adjustments of the tooling plate or the position of the cartridge hub, wasting a lot of time on repeated calibration. The pre-pressing alignment link, using a relatively small pre-pressure, can quickly detect the position deviation between the nail cartridge and the cartridge hub without causing substantial assembly. This process seemingly adds steps, but in fact, through early and accurate positioning, it significantly reduces the adjustment time during secondary pressing, overall improving the assembly efficiency. Especially in large-scale production, the time saved in each assembly accumulates to a significant effect.

[0035] Secondly, the nail cartridge is filled with gunpowder inside and is extremely sensitive to pressure control. If the pressure during one-time pressing is too high, it is extremely easy to cause an explosion. The traditional idea may reduce the risk by strictly controlling the pressure value, but in actual operation, due to factors such as individual differences of the nail cartridges and elastic changes of the tooling plate material, it is very difficult to ensure that the pressure of each pressing is just right. In the pre-pressing alignment link of this solution, 1 / 3 - 1 / 2 of the overall pressing amplitude is used as the pre-pressure. This pre-pressure can make the nail cartridge and the cartridge hub come into preliminary contact, detect potential problems, and is not sufficient to cause an explosion. During the pre-pressing process, if it is found that the cooperation between the nail cartridge and the cartridge hub is abnormal, such as the nail cartridge not fully falling into the hole of the cartridge hub or there being a large gap between the two, the operation can be stopped in time for adjustment to avoid explosions caused by these hidden dangers during secondary pressing. This way of applying pressure step by step and detecting hidden dangers in advance breaks the traditional one-time pressing mindset and fundamentally improves production safety.

[0036] 2. Ensure assembly quality: In the preloading and alignment step, the preloading amplitude is 1 / 3 - 1 / 2 of the overall press-fitting amplitude. Since the conical warhead in the nail gun cartridge accounts for 1 / 3 of the overall length, the part exceeding the warhead during preloading facilitates good positioning of the cartridge hub and the entire nail gun cartridge, preventing further offset and wobbling during subsequent conveying, which could lead to inaccurate positioning between the two during the second press-fitting and cause the nail gun cartridge to be pressed skewed or flattened, resulting in an explosion. The reason for the preloading amplitude not exceeding 1 / 2 of the overall press-fitting amplitude is to reduce the pressure during preloading and avoid the risk of explosion due to excessive pressure. At the same time, preloading and alignment helps to detect in advance the fit between the nail gun cartridge and the cartridge hub, promptly discover and correct any possible position deviations, ensure that the nail gun cartridge can be accurately inserted into the cartridge hub during the second press-fitting, improve the accuracy and firmness of the assembly, and guarantee product quality. After the nail gun cartridge and the cartridge hub are flipped and then subjected to the second press-fitting, the contact area between the nail gun cartridge and the cartridge hub is increased, making the pressure distribution more uniform and further enhancing the assembly quality.

[0037] 3. Enhance assembly safety: During the entire assembly process, automated operations such as feeding, sorting, and pre-assembly reduce the direct human contact with the nail gun cartridge, lowering the risk of explosion caused by improper manual operation. The preloading and alignment step pre-checks potential problems, avoiding accidents during the final press-fitting and ensuring the safety of operators and equipment.

[0038] 4. Optimize the operation process: In step 3, the press-fitting plate is placed before flipping, and the tooling plate is removed and recycled after flipping. This operation process makes the entire assembly process more orderly. The placement of the press-fitting plate helps to protect the nail gun cartridge and the cartridge hub during flipping, ensuring their stable positions. The recycling of the tooling plate can be reused, reducing production costs, optimizing the material management process, and improving the utilization rate of production resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic assembly diagram of the nail gun cartridge and the cartridge hub.

[0040] Figure 2 It is a schematic diagram of the overall structure of the assembly equipment according to an embodiment of the present invention.

[0041] Figure 3 It is a schematic diagram of the structure of the press-fitting system according to an embodiment of the present invention.

[0042] Figure 4 It is a schematic diagram of the structure of the vibration sorting structure according to an embodiment of the present invention.

[0043] Figure 5 It is a schematic diagram of the structure of the cartridge hub feeding mechanism according to an embodiment of the present invention.

[0044] Figure 6 It is a bottom-up view of the cartridge hub feeding mechanism according to an embodiment of the present invention.

[0045] Figure 7 Schematic diagram of the power transmission mechanism according to an embodiment of the present invention.

[0046] Figure 8 Schematic diagram of the preloading and alignment mechanism according to an embodiment of the present invention.

[0047] Figure 9 Schematic diagram of the flap mechanism according to an embodiment of the present invention.

[0048] Figure 10 Schematic diagram of the grasping structure according to an embodiment of the present invention.

[0049] Figure 11 Schematic diagram of the press-fitting mechanism according to an embodiment of the present invention. Detailed implementation manners

[0050] The following is a further detailed description through specific implementation manners:

[0051] The reference numerals in the accompanying drawings of the specification include: nail gun ammunition loading station 001, cartridge hub loading station 002, preloading station 003, cover plate station 004, flipping station 005, plate shifting station 006, press-fitting station 007, product collection station 008, nail gun ammunition loading mechanism 1, loading structure 11, vibration sorting structure 12, vibration plate 121, vibration fixing frame 122, vibration motor 123, vibration eccentric seat 124, tooling plate conveying line 13, tooling plate output line 14, pushing cylinder 15, cartridge hub loading mechanism 2, stacking table 21, positioning rod 22, lifting hole 23, lifting structure 24, lifting cylinder 241, lifting table 242, lifting column 243, power transmission mechanism 3, transmission plate 31, check valve 32, fixing block 321, check block 322, preloading and alignment mechanism 4, alignment cylinder 41, alignment plate 42, alignment block 43, alignment hole 44, cover plate mechanism 5, press-fitting plate conveying line 51, flap mechanism 6, flap motor 61, fixing fixture 62, fixing groove 63, press-fitting mechanism 7, press-fitting cylinder 71, press-fitting block 72, supporting block 73, protection structure 74, grasping structure 8, transverse moving cylinder 81, vertical cylinder 82, vacuum suction cup 83, tooling plate 9, press-fitting plate 10.

[0052] Embodiment 1

[0053] Basically as shown in the attached Figures 1-11As shown in the figure: An automatic assembly device for a nail gun cartridge and a cartridge hub, comprising a nail gun cartridge feeding mechanism 1 and a cartridge hub feeding mechanism 2 located on both sides of the frame, and a press-fitting system arranged between the two. The press-fitting system includes a power transmission mechanism 3, a pre-assembly alignment mechanism 4, a cover plate mechanism 5, a flap mechanism 6 and a press-fitting mechanism 7 arranged on the frame; a nail gun cartridge feeding station 001, a cartridge hub feeding station 002, a pre-pressing station 003, a cover plate station 004, a flipping station 005, a plate shifting station 006, a press-fitting station 007 and a product collection station 008 are successively arranged on the frame. The nail gun cartridge feeding mechanism 1 conveys a tooling plate 9 and neatly arranges the nail gun cartridges with their tips facing upwards on the tooling plate 9. The tooling plate 9 filled with nail gun cartridges is placed at the initial end of the press-fitting system. The cartridge hub feeding mechanism 2 is used to arrange the cartridge hubs above the tooling plate 9 corresponding to the nail gun cartridges.

[0054] As Figure 2 , Figure 4 shown, the nail gun cartridge feeding mechanism 1 includes a feeding structure 11 and a vibration sorting structure 12. The feeding structure 11 realizes intermittent feeding. The feeding structure 11 is a push plate type feeder, which belongs to the prior art and will not be elaborated here. The two ends of the vibration sorting structure 12 are respectively connected with a tooling plate conveying line 13 and a tooling plate output line 14. A pushing cylinder 15 is arranged at the end of the tooling plate conveying line 13. The vibration sorting structure 12 includes a vibration plate 121 with an inclined upper surface and a front and rear vibration assembly for driving the vibration plate 121 to slide back and forth. The two ends of the vibration plate 121 are correspondingly connected with the tooling plate conveying line 13 and the tooling plate output line 14, and end partitions are provided to prevent the nail gun cartridges from rolling down. The front and rear vibration assembly includes a vibration fixing frame 122, a vibration motor 123 and a vibration eccentric seat 124. A slide rail is arranged on the vibration fixing frame 122 to realize the sliding guiding function of the vibration plate 121. The vibration motor 123 is fixed on the vibration fixing frame 122. The vibration eccentric seat 124 includes a seat body connected with the vibration plate 121 and an eccentric wheel arranged inside it. The eccentric wheel is fixed to the output shaft of the vibration motor 123. Specifically, during feeding, the pushing cylinder 15 successively pushes the empty tooling plate 9 into the vibration plate 121. The feeding structure 11 pours the nail gun cartridges into the vibration plate 121. Then the vibration motor 123 rotates, and drives the entire vibration plate 121 to slide back and forth through the eccentric wheel and the seat body, so that the nail gun cartridges in the vibration plate 121 fall into the tooling plate 9 under the action of the front and rear vibration and gravity, realizing the fast and automatic neat feeding of the nail gun cartridges.

[0055] As Figure 10As shown, the nail gun ammunition feeding mechanism 1 is also provided with a grasping structure 8 at the nail gun ammunition feeding station 001. The grasping structure 8 includes a transverse moving cylinder 81 and a vertical cylinder 82. The end of the output shaft of the vertical cylinder 82 is connected with a vacuum chuck 83. The transverse moving cylinder 81 drives the vertical cylinder 82 and the vacuum chuck 83 at the bottom to move horizontally, adsorbing and transporting the tooling plate 9 neatly loaded with nail gun ammunition to the initial end of the pressing system, that is, the nail gun ammunition feeding station 001.

[0056] As Figure 5 , Figure 6 shown, the cartridge case feeding mechanism 2 includes a stacking table 21 for placing cartridge cases. A number of positioning rods 22 are provided on the stacking table 21. The positioning rods 22 cooperate with the holes of the cartridge cases, and a number of cartridge cases are stacked and sleeved on the positioning rods 22; a lifting structure 24 is provided at the bottom of the stacking table 21, and a lifting hole 23 is opened on the stacking table 21. The lifting hole 23 penetrates the stacking table 21 and is coaxial with the cartridge cases on the stacking table 21; the lifting structure 24 includes a lifting cylinder 241 and a lifting table 242. A number of lifting columns 243 corresponding to the lifting holes 23 are provided on the lifting table 242. The lifting cylinder 241 drives the lifting table 242 and the lifting columns 243 thereon to move upward and pass through the lifting holes 23 to transport the cartridge cases upward, ensuring that the cartridge cases are always flush with the top of the positioning rods 22, which is convenient for the technician to load the cartridge cases. A grasping structure 8 is also provided at the cartridge case feeding station 002 for transporting the cartridge cases from the cartridge case feeding mechanism 2 to the tooling plate 9.

[0057] The preloading alignment mechanism 4 and the pressing mechanism 7 cooperate to press the nail gun ammunition into the cartridge case multiple times; the cover plate mechanism 5 conveys a pressing plate 10 and places the pressing plate 10 on the tooling plate 9. The turning plate mechanism 6 turns the tooling plate 9 and the pressing plate 10 so that the nail gun ammunition and the cartridge case fall onto the pressing plate 10; the power transmission mechanism 3 includes a driving structure and a plurality of check valves 32 arranged at equal intervals. The driving structure intermittently conveys the nail gun ammunition through the check valves 32.

[0058] As Figure 7 shown, the check valve 32 is fixed on a transmission plate 31 at the bottom. The driving structure is a driving cylinder (not shown in the figure). The driving cylinder is fixedly connected with the transmission plate 31 to drive the transmission block and the check valve 32 thereon to perform reciprocating motion; the check valve 32 includes a fixed block 321 and a check block 322. One end of the check block 322 facing the initial end of the pressing system is hinged to the fixed block 321, and a spring (not shown in the figure) is fixedly arranged between the other end and the fixed block 321. The check block 322 is bent upward along the initial end to the end of the pressing system. When the check valve 32 retracts, its upward bending structure enables it to contact the bottom of the tooling plate 9 and guide the check valve 32 to retract smoothly to the initial end along a specific trajectory to prepare for the next push.

[0059] As Figure 8As shown, the pre-installed alignment mechanism 4 includes an alignment cylinder 41 and an alignment plate 42. A plurality of alignment blocks 43 are detachably connected to the bottom of the alignment plate 42 by bolts. The position distribution of the alignment blocks 43 corresponds to the position distribution of the bullet hubs on the tooling plate 9. The alignment blocks 43 are cylindrical. A number of alignment holes 44 are formed in each alignment block 43 in a circular distribution and corresponding one-to-one to the holes of the bullet hubs on the tooling plate 9. The alignment holes 44 are used to accommodate the nail cartridges. Compared with the integral alignment blocks 43, the multiple independently distributed alignment blocks 43 are convenient for individual processing, replacement and maintenance, saving material costs.

[0060] As Figure 1 , Figure 7 shown, the cover plate mechanism 5 includes a press-fitting plate conveyor line 51 and the above-mentioned grasping structure 8. The vertical cylinder 82 drives the vacuum suction cup 83 to move up and down to adsorb and pick up the press-fitting plate 10. The transverse cylinder 81 drives the vertical cylinder 82 and the vacuum suction cup 83 at the bottom to move horizontally so that the press-fitting plate 10 falls on the tooling plate 9. A number of annular grooves corresponding to the bullet hubs and through holes corresponding to the nail cartridges are provided on the press-fitting plate 10.

[0061] As Figure 9 shown, the turning plate mechanism 6 includes a turning plate motor 61 fixed on the frame and a fixed fixture 62 connected to the output shaft of the turning plate motor 61. The fixed fixture 62 includes a connecting block and fixed grooves 63 symmetrically arranged on the left and right of the connecting block for accommodating the tooling plate 9 and the press-fitting plate 10. The fixed grooves 63 are U-shaped; the bottom of the frame at the turning plate mechanism 6 is a hollow structure to avoid structural interference during turning. Specifically, during turning, the check valve 32 moves to push the tooling plate 9 and the press-fitting plate 10 in the right fixed groove 63 forward, and the unturned tooling plate 9 and press-fitting plate 10 are pushed into the left fixed groove 63. Then the turning plate motor 61 starts to drive the entire fixed fixture 62 to perform a 180-degree turn, so that the press-fitting plate 10 is at the bottom and the tooling plate 9 is at the top, and the nail cartridges and bullet hubs fall into the press-fitting plate 10.

[0062] As Figure 11 shown, the press-fitting mechanism 7 includes a press-fitting cylinder 71, a press-fitting block 72 and a supporting block 73. The press-fitting plate 10 is located between the press-fitting block 72 and the supporting block 73 and is placed on the supporting block 73; protective structures 74 are provided on the outer peripheries of the press-fitting block 72 and the supporting block 73. The protective structures 74 are two layers of protective covers sleeved in sequence.

[0063] As Figure 1 shown, a transfer plate station 006 is provided between the turning plate mechanism 6 and the press-fitting mechanism 7. A tooling plate recycling mechanism is provided at the transfer plate station 006, including a grasping structure 8. The tooling plate 9 located above after turning is transferred and conveyed to the initial end of the tooling plate conveyor line 13 through the grasping structure 8 for repeated loading of nail cartridges, so that the overall equipment of each process is cyclically coordinated.

[0064] As Figure 1As shown, a product collecting station 008 is provided at the rear end of the pressing mechanism 7, and a pressing plate recovery mechanism is also provided at this station, including a grasping structure 8. The grasping structure 8 on this station is provided with two symmetrical vertical cylinders 82, and vacuum suction cups 83 are connected to the bottom of the two vertical cylinders 82. When the assembly of the nail bullet and the bullet hub is completed, the vertical cylinder 82 on the left drives the vacuum suction cup 83 to align with the assembled product for adsorption, and the vacuum suction cup 83 on the right temporarily does not work, and then the product is transported to the left to the collection point under the drive of the transverse cylinder 81. At this time, the vacuum suction cup 83 on the right is aligned with the pressing plate 10 and adsorbs it downward, and then resets under the drive of the transverse cylinder 81, and the vacuum suction cup 83 on the right transports the pressing plate to the pressing plate conveying line 51, so as to realize the recycling of the pressing plate 10.

[0065] Example 2

[0066] Based on the above-mentioned automatic assembly equipment of a nail bullet and a bullet hub, the present solution also provides an automatic assembly method of a nail bullet and a bullet hub, comprising the following steps:

[0067] Step 1: neatly arrange the nail bullets and the bullet hubs through the nail bullet feeding mechanism 1 and the bullet hub feeding mechanism 2 respectively, wherein the nail bullets are placed with their tips facing upwards in the tooling plate 9, and then the bullet hubs are placed on the nail bullets to achieve pre-assembly.

[0068] Step 2: Pre-press and align the pre-assembled nail bullet and the hub; the pre-pressing amplitude is 1 / 3-1 / 2 of the overall press-fitting amplitude. Since the conical bullet in the nail bullet accounts for 1 / 3 of the overall length, the part exceeding the bullet during pre-pressing is convenient for positioning the hub and the nail bullet well as a whole, and will not cause deviation and shaking during the subsequent transportation process, which will cause the positioning between the two to be inaccurate during the second press-fitting, and the nail bullet will be pressed flat and exploded; and the pre-pressing amplitude does not exceed 1 / 2 of the overall press-fitting amplitude in order to reduce the pressure during pre-pressing and avoid the risk of explosion caused by excessive pressure. In addition, pre-pressing and aligning first helps to detect the matching of the nail bullet and the hub in advance, timely discover and correct possible position deviations, ensure that the nail bullet can be accurately loaded into the hub during the second press-fitting, and improve the accuracy and firmness of the assembly.

[0069] Step 3, flip the nail bullet and the bullet hub so that the tip of the nail bullet faces downward; before flipping, place a press plate 10 on the bullet hub; after flipping, remove and recycle the tooling plate 9, and directly press fit the bottom of the nail bullet.

[0070] Step 4: The nail bullet and the bullet hub are pressed for a second time by the pressing mechanism 7 to complete the assembly.

[0071] Among them, the pressing pressures in Step 2 and Step 4 do not exceed 5t, and the pressing pressure in Step 2 is less than or equal to that in Step 4. Since the warhead of the nail gun cartridge in Step 2 is inverted conical during pressing and there is a gap between it and the hole of the cartridge case, the pressing is simpler. And the bottom diameter of the nail gun cartridge is larger, so a greater force is required for pressing and assembling during the secondary pressing in Step 4. Therefore, the pressing pressure in Step 2 can be less than that in Step 4. However, further, if the pressing pressures for the two times are the same, the same equipment accessories can be used, and subsequent equipment maintenance will be more convenient and consistent, so as to reduce equipment downtime and production losses.

[0072] By neatly sorting the nail gun cartridges and the cartridge cases respectively, this method uses the nail gun cartridge feeding mechanism 1 and the cartridge case feeding mechanism 2 to complete the preliminary preparation work, saving a large amount of time for subsequent assembly. The pre-assembly step preliminarily positions the two, reducing the adjustment time during subsequent assembly. The step-by-step operations of pre-pressing and alignment and secondary pressing can complete the assembly process more quickly and accurately compared with one-time pressing, improving the overall assembly efficiency and meeting the requirements of large-scale production; and it can avoid explosion due to excessive pressure when pressing in place at one time, enhancing production safety.

[0073] The above are only embodiments of the present invention. Specific technical solutions and / or common knowledge such as characteristics well known in the art are not described in detail here. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to explain the content of the claims.

Claims

1. An automated assembly device for nail bullets and bullet hubs, characterized in that: It includes a nail bullet feeding mechanism and a bullet hub feeding mechanism located on both sides, and a press-fitting system arranged between the two, and the press-fitting system includes a power transmission mechanism, a pre-installation alignment mechanism, a cover plate mechanism, a flap mechanism and a press-fitting mechanism arranged on the frame; The nail bullet feeding mechanism conveys a tooling plate and arranges the nail bullets neatly on the tooling plate with their tips facing upwards; the tooling plate filled with nail bullets is placed at the initial end of the press-fitting system; the hub feeding mechanism is used to arrange the hubs above the tooling plate to correspond to the nail bullets; the pre-installation alignment mechanism and the press-fitting mechanism cooperate to press-fit the nail bullets into the hubs multiple times; the cover plate mechanism conveys a press-fitting plate and places the press-fitting plate on the tooling plate; the flip plate mechanism flips the tooling plate and the press-fitting plate to make the nail bullets and the hubs fall onto the press-fitting plate; the power transmission mechanism includes a driving structure and a plurality of equidistantly arranged backstops, and the driving structure intermittently conveys the nail bullets through the backstops.

2. The automatic assembly equipment for nail bullets and bullet hubs according to claim 1 is characterized in that: The pre-installed alignment mechanism includes an alignment cylinder and an alignment plate. A plurality of alignment blocks are connected to the bottom of the alignment plate. Each alignment block is provided with a plurality of alignment holes distributed in an annular manner and corresponding to the holes of the bullet hub on the tooling plate one by one. The alignment holes are used to accommodate nail bullets.

3. The automatic assembly equipment for nail bullets and bullet hubs according to claim 2 is characterized in that: The press-fitting mechanism comprises a press-fitting cylinder, a press-fitting block and a supporting block, wherein the press-fitting plate is located between the press-fitting block and the supporting block and is placed on the supporting block; a protective structure is arranged on the periphery of the press-fitting block and the supporting block, and the protective structure is two layers of protective covers which are sequentially sleeved.

4. The automatic assembly equipment for nail bullets and bullet hubs according to claim 3 is characterized in that: A transmission plate is fixed at the bottom of the backstop, and the backstop includes a fixed block and a check block. One end of the check block facing the initial end of the press-fitting system is hinged to the fixed block, and a spring is fixed between the other end and the fixed block. The check block is an upwardly bent structure along the initial end to the end of the press-fitting system.

5. The automatic assembly equipment for nail bullets and bullet hubs according to claim 4 is characterized in that: The flap mechanism comprises a flap motor and a fixing fixture connected to the output shaft of the flap motor, wherein the fixing fixture is symmetrically provided with fixing grooves for accommodating the tooling plate and the pressing plate; the bottom of the frame at the flap mechanism is a hollow structure.

6. The automatic assembly equipment for nail bullets and bullet hubs according to claim 5, characterized in that: The nail bullet feeding mechanism includes a feeding structure and a vibration sorting structure. The feeding structure realizes intermittent feeding. The two ends of the vibration sorting structure are respectively connected to the tooling plate conveyor line and the tooling plate output line. The vibration sorting structure includes a vibration plate with an inclined upper surface and a front and rear vibration component that drives the vibration plate to slide back and forth; the bullet hub feeding mechanism includes a stacking platform for placing the bullet hub, and the stacking platform is provided with a plurality of positioning rods, which cooperate with the holes of the bullet hub, and a plurality of bullet hubs are stacked on the positioning rods; a lifting structure is provided at the bottom of the stacking platform, and a lifting hole is opened on the stacking platform. The lifting hole runs through the stacking platform and is coaxial with the bullet hub on the stacking platform, and the lifting structure passes through the lifting hole to transport the bullet hub upward.

7. The automatic assembly equipment for nail bullets and bullet hubs according to claim 1, characterized in that: It also includes a tooling plate recovery mechanism and a press plate recovery mechanism. The tooling plate recovery mechanism transports the tooling plate to the initial end of the nail bullet feeding mechanism, and the press plate recovery mechanism transports the press plate to the initial end of the cover plate mechanism.

8. An automated assembly method for a nail bullet and a bullet hub, characterized in that: The following steps are involved: Step 1: Arrange the nail bullets and the bullet hubs neatly, with the tips of the nail bullets facing upwards in the tooling plate, and then place the bullet hubs on the nail bullets to achieve pre-assembly; Step 2: pre-press and align the pre-assembled nail bullet and the bullet hub; Step 3: Turn the nail bullet and the bullet hub over so that the tip of the nail bullet faces downward; Step 4: Press-fit the nail bullet and the bullet hub for a second time to complete the assembly.

9. The method for automatically assembling a nail bullet and a bullet hub according to claim 8, characterized in that: In step 2, the amplitude of the pre-pressing is 1 / 3-1 / 2 of the overall pressing amplitude; the pressing pressures in step 2 and step 4 do not exceed 5t, and the pressing pressure in step 2 is less than or equal to the pressing pressure in step 4.

10. The method for automatically assembling a nail bullet and a bullet hub according to claim 9, characterized in that: In the step 3, before turning over, a press plate is placed on the bullet hub; After the flipping is completed, the tooling board is removed and recycled.

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