Automatic packing machine for packing mounting fittings of door lock

Abstract

The present application belongs to the technical field of automatic packaging of accessories, and particularly relates to an automatic packaging machine for packaging mounting accessories of door locks, comprising: a rack, multiple groups of vibration discs, a guide track at the output end of each group of vibration discs, a material collecting track, a weighing table, two discharge tracks, a bearing seat, two push plates, a synchronous driving mechanism and a controller; compared with the prior art, the automatic packaging machine can detect the weight of accessories before packaging, so as to avoid errors in the number of accessories after packaging.

Description

Technical Field

[0001] This invention belongs to the field of automatic packaging technology for accessories, and particularly relates to an automatic packaging machine for packaging installation accessories for door locks. Background Technology

[0002] After door locks are manufactured, they typically come with a series of small, miscellaneous installation accessories, such as screws, threaded sleeves, lock cylinders, keys, and washers. To prevent these accessories from being lost or mixed up during transportation, manufacturers usually package them together in a sealed bag before shipping. In early production models, packaging door lock accessories relied mainly on manual labor, where workers would take out, bag, and seal each accessory according to its type and quantity. This manual packaging method was inefficient, labor-intensive, and prone to omissions or mis-packing, making it difficult to meet the demands of modern, large-scale, and efficient production.

[0003] With the development of automation technology, automated production lines for accessory packaging have gradually appeared on the market. Their basic working principle is as follows: different types of door lock accessories are poured into different vibratory feeders. Each vibratory feeder uses vibration to arrange the disorganized accessories in a certain direction and output them one by one. Each vibratory feeder's output end is connected to a guide rail, and multiple guide rails eventually collect the different types of accessories onto a collection rail. The collection rail then transports these accessories sequentially to the packaging station. Simultaneously, the packaging film inside the packaging equipment is rolled into a cylindrical shape and longitudinally sealed by a longitudinal sealing device, forming a bag with an open top. Subsequently, multiple accessories are "spit" into this bag, and then the top of the bag is sealed and the individual parts are cut by a transverse sealing device and a cutting device, ultimately forming an independent accessory packaging package.

[0004] However, in actual production, the aforementioned automated packaging equipment still has significant technical shortcomings. The most significant problem is that the equipment cannot perform real-time detection of the quantity of accessories before packaging. Because the output of the vibratory feeder can be affected by factors such as the shape of the accessories, friction, and vibration frequency, occasional instances of under- or over-packaging may occur. If customers receive packages lacking crucial accessories, door locks cannot be installed properly, severely impacting the consumer experience and consequently damaging the company's reputation. Therefore, improving the accuracy of accessory quantity during the packaging process is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned technical problems by providing an automatic packaging machine for door lock installation accessories. This automatic packaging machine can weigh and detect the accessories before packaging, thus avoiding errors in the number of accessories after packaging.

[0006] In view of this, the present invention provides an automatic packaging machine for packaging installation accessories for door locks, comprising: The frame is equipped with multiple sets of vibratory feeders, each set of vibratory feeders contains multiple identical accessories, and each set of vibratory feeders has an output track at its output end. The material collection track is mounted on the frame and can receive and transport the parts exported from multiple output tracks. Weighing platform, which can receive the parts exported from the collection track and weigh these parts; Two discharge tracks are symmetrically arranged on both sides of the weighing platform along the first direction, and the ends of the two discharge tracks away from the weighing platform are inclined downwards. The support seat is mounted on the frame and can support the weighing platform and two discharge tracks. The support seat forms a front side plate and a rear side plate in the second direction of the weighing platform. Two push plates are respectively set on both sides of the weighing platform along the first direction. The two push plates can move synchronously on the bearing seat along the first direction. When the two push plates are in the initial position, they can prevent the parts on the weighing platform from entering the two discharge tracks. During the process of the two push plates moving synchronously to one side in the first direction, one push plate forms a discharge port connecting one discharge track with the weighing platform, and the other push plate pushes the parts on the weighing platform into the discharge port. The synchronous drive mechanism can drive the two push plates to move synchronously in the first direction. The controller receives the weighing results from the weighing platform, compares the results with preset values, and finally controls the synchronous drive mechanism to perform drive actions.

[0007] In the above technical solution, the bearing seat is further provided with an assembly groove, the synchronous drive mechanism is provided in the assembly groove, and the side wall of the rear plate is provided with a sliding groove communicating with the assembly groove. The synchronous drive mechanism includes a lead screw, two transmission seats, and a drive motor. The lead screw is rotatably provided in the assembly groove. Both transmission seats are slidably connected to the sliding groove along the first direction. The two transmission seats are respectively connected to two push plates. Both transmission seats are provided with a nut block that is connected to the lead screw. The drive motor can drive the lead screw to rotate.

[0008] Furthermore, in the above technical solution, the support is provided with a detachable protective cover that can cover the opening of the assembly slot.

[0009] In the above technical solution, each of the two transmission seats is further provided with a locking block, and a locking seat is slidably provided in the assembly groove along the second direction. The locking seat is provided with two locking grooves on the side wall near the two locking blocks. When the two push plates are in the initial position, the two locking blocks are opposite to the two locking grooves. A locking switching mechanism is provided in the assembly groove. The locking switching mechanism can drive the locking seat to move in the second direction, so that the two locking blocks enter or exit the two locking grooves. When the two locking blocks enter the two locking grooves, the movement of the transmission seat in the first direction is restricted. When the two locking blocks exit the two locking grooves, the transmission seat can move in the first direction.

[0010] In the above technical solution, the locking switching mechanism further includes a fixed shaft, an L-shaped rod, a metal block, an electromagnet, and a return spring. The fixed shaft is mounted on the locking seat. The middle part of the L-shaped rod is rotatably mounted in the assembly groove. The first end of the L-shaped rod is provided with a connecting groove, and the fixed shaft is located in the connecting groove. The electromagnet is located on one side of the L-shaped rod, and the metal block is located on the side wall of the second end of the L-shaped rod near the electromagnet. The return spring is located between the assembly groove and the locking seat. When the electromagnet is energized, it can generate magnetism to attract the metal block, thereby causing the L-shaped rod to swing. The L-shaped rod, through the cooperation of the connecting groove and the fixed shaft, drives the locking seat away from the transmission seat. During this process, the return spring is compressed. When the electromagnet is de-energized, it loses its magnetism. At this time, the L-shaped rod is reset under the elastic force of the return spring, and through the cooperation of the connecting groove and the fixed shaft, it drives the locking seat closer to the transmission seat.

[0011] In the above technical solution, the locking switching mechanism further includes two stop blocks, which are respectively set on both sides of the locking seat and fixed in the assembly groove. Lugs are provided on the side walls on both sides of the locking seat. During the reset process of the L-shaped rod driven by the reset spring, the two lugs can contact the two stop blocks to restrict the locking seat from continuing to approach the transmission seat. At this time, the side wall of the locking groove does not contact the transmission seat in the second direction.

[0012] In the above technical solution, the length of the second end of the L-shaped rod is greater than the length of the first end, and a friction block is provided at the second end of the L-shaped rod for manual force application.

[0013] In the above technical solution, furthermore, an observation port is provided at the position opposite to the weighing platform on the front side plate, and a transparent observation plate is provided in the observation port.

[0014] In the above technical solution, a collection frame for collecting defective products is further provided below one discharge track, and a bag making and sealing mechanism is provided at the lower end of the other discharge track. The bag making and sealing mechanism can make packaging bags below the discharge track for accessories to enter, and can seal the packaging bags.

[0015] In the above technical solution, the bag making and sealing mechanism further includes an unwinding roller, a tensioning roller, a spreading mechanism, a sealing mechanism, a hot pressing mechanism, and a cutting mechanism. The unwinding roller is used to unwind the packaged bag roll material into a sheet shape. The tensioning roller is used to tension and guide the sheet-shaped packaged bag roll material into the spreading mechanism. The spreading mechanism is used to bring the two sides of the sheet-shaped packaged bag roll material closer together to form a cylinder. The sealing mechanism is used to seal the sides of the cylindrical packaged bag. The hot pressing mechanism is used to seal the bottom and top of the packaged bag. After the bottom of the packaged bag is sealed, the accessories on the discharge track enter the packaged bag. Then the packaged bag moves downward and the top of the packaged bag is sealed. The cutting mechanism is used to cut and separate the complete packaged bag from the continuous packaged bag roll material.

[0016] The beneficial effects of this invention are: 1. By setting up a frame, vibratory feeder, guide rail, collection rail, weighing platform, two discharge rails, support base, two push plates, synchronous drive mechanism, and controller, a weighing platform is added after the collection rail and before the discharge rail. The controller compares the weighing result with the preset value, and controls the synchronous drive mechanism to push the parts into different discharge rails based on the comparison result. This realizes the automatic detection and sorting of the total weight (i.e., the number of parts) of the parts before packaging. This effectively solves the problem that existing equipment cannot detect the number of parts and is prone to missing or extra parts, and greatly improves the accuracy of parts packaging and the product qualification rate.

[0017] 2. By placing two push plates on both sides of the weighing platform and using a synchronous drive mechanism to enable the two push plates to move synchronously in the same direction, this design simplifies the drive system and avoids the problem of complex synchronous control required by two independent power sources. At the same time, it also enables the simultaneous completion of two actions within one motion cycle: "opening one side of the discharge port" and "pushing the parts into the discharge port". The pushing speed is fast and the efficiency is high. In addition, the two push plates serve as the left and right side plates of the weighing platform in the initial position, which helps to prevent the parts from falling off. It is a multi-purpose device with a highly integrated structure.

[0018] 3. The synchronous drive mechanism integrates a locking seat, locking slot, and locking switching mechanism. The locking switching mechanism uses an electromagnet and a return spring in combination. During normal operation, the electromagnet is energized to release the lock, allowing the push plate to move freely. When the equipment stops, loses power, or malfunctions, the electromagnet loses power, and the return spring automatically pushes the locking seat into the locked position, restricting the movement of the transmission seat and the push plate. This "power-off locking" fail-safe mode effectively prevents injury to operators caused by accidental material pushing or push plate malfunction, and also avoids damage to the push plate due to vibration during transportation, significantly improving the safety level and reliability of the equipment.

[0019] 4. A removable protective cover is installed on the bearing seat. During normal use, the protective cover can cover the opening of the assembly slot, effectively preventing external dust, debris, small parts and other foreign objects from falling into the assembly slot, avoiding wear or jamming of precision parts such as lead screws and transmission seats, and extending the service life of the equipment. When it is necessary to inspect the structure inside the assembly slot, removing the protective cover can create a larger operating space, making maintenance convenient.

[0020] 5. By setting the limiting structure of the stop block and the lug, the locking seat can be precisely limited when it is reset under the drive of the return spring, ensuring that a small gap is maintained between the locking groove and the locking block. This design not only realizes the locking function (restricting the movement in the first direction), but also avoids the generation of pressure and friction in the second direction between the locking groove and the locking block, thereby reducing the resistance when the transmission seat moves, reducing the energy consumption of the drive motor and the wear of the lead screw, and improving the service life of the synchronous drive mechanism.

[0021] 6. The second end of the L-shaped rod is longer than the first end and is equipped with a friction block for manual force application. This lever design allows the operator to easily unlock the L-shaped rod by applying only a small force in the event of electromagnet failure or power failure, facilitating equipment maintenance and emergency handling. The friction block increases the friction between the fingers and the L-shaped rod, preventing slippage and improving the convenience and reliability of manual operation.

[0022] 7. By setting up observation ports and transparent observation panels, operators can directly observe the status of accessories on the weighing platform without stopping the machine or disassembling any parts, and promptly detect problems such as accessory jamming, residue, or abnormal accumulation. This design significantly improves the human-machine interface and maintainability of the equipment, and reduces the risk of prolonged downtime due to minor faults.

[0023] 8. Two discharge tracks are connected to the collection box and the bag making and sealing mechanism respectively, realizing the automatic separation of qualified and defective products; qualified parts directly enter the bag making and sealing mechanism to complete the packaging, while defective parts automatically fall into the collection box to wait for manual processing; this layout avoids defective parts from entering the packaging process, saves packaging material costs, and improves production efficiency. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the automatic packaging machine of the present invention. Figure 1 .

[0026] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the automatic packaging machine of the present invention. Figure 2 .

[0027] Figure 3 This is a top view of the overall structure of the automatic packaging machine of the present invention.

[0028] Figure 4 This is a side view of the overall structure of the automatic packaging machine of the present invention.

[0029] Figure 5 This is a partial structural diagram of the components of the automatic packaging machine of the present invention located at the support seat.

[0030] Figure 6 This is a three-dimensional structural diagram of the support base in this invention, showing the state in which the protective cover covers the opening of the assembly slot.

[0031] Figure 7 This is a schematic diagram of the rear three-dimensional structure of the support base and its components in this invention, with the protective cover hidden in the diagram.

[0032] Figure 8 This is a schematic diagram of the front three-dimensional structure of the support base and its components in this invention, with the protective cover hidden in the diagram.

[0033] Figure 9 This is a schematic diagram of the two push plates in the initial position in this invention. At this time, the two push plates are located on both sides of the weighing platform to form left and right side plates.

[0034] Figure 10 This is a schematic diagram of two push plates moving synchronously to the left in this invention. The left push plate forms a discharge port connecting the left discharge track with the weighing platform, and the right push plate pushes the accessories on the weighing platform into the discharge port.

[0035] Figure 11 In this invention, the two locking slots on the locking seat lock the two blocks, and at this time, the movement of the two transmission seats in the first direction is restricted.

[0036] Figure 12 This is the state in which the two locking slots on the locking seat of the present invention do not lock the two blocks, and at this time the two transmission seats can move in the first direction.

[0037] The markings in the diagram are as follows: X, First direction; Y, Second direction; 1. Frame; 2. Vibratory feeder; 3. Outlet track; 4. Collecting track; 5. Weighing platform; 6. Discharge track; 7. Bearing seat; 701. Assembly slot; 702. Sliding slot; 8. Push plate; 9. Synchronous drive mechanism; 901. Lead screw; 902. Transmission seat; 9021. Locking block; 903. Drive motor; 10. Protective cover; 11. Locking seat; 1101. Locking slot; 1201. Fixed shaft; 1202 12021. L-shaped rod; 12022. Connecting groove; 1203. Metal block; 1204. Electromagnet; 1205. Return spring; 1301. Stop block; 1302. Lug; 1401. Guide post; 1402. Guide groove; 15. Observation plate; 16. Bag making and sealing mechanism; 1601. Unwinding roller; 1602. Tensioning roller; 1603. Spreading mechanism; 1604. Bag sealing mechanism; 1605. Hot pressing mechanism; 17. Material collection sleeve; 18. Material collection cover; Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] In the description of this invention, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments of the invention. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0040] Example 1

[0041] like Figures 1-5 As shown, this embodiment of the invention provides an automatic packaging machine for door lock installation accessories, including a frame 1, multiple sets of vibrating plates 2, multiple guide rails 3, a material collection rail 4, a weighing platform 5, two discharge rails 6, a support seat 7, two push plates 8, a synchronous drive mechanism 9, and a controller.

[0042] Please see Figures 1-4 The frame 1, serving as the supporting skeleton of the entire equipment, is constructed from stainless steel square tubing or aluminum alloy profiles through welding or assembly, possessing sufficient structural strength and stability. Multiple sets of vibratory feeders 2 are mounted on the frame 1; in this embodiment, four sets are used as an example. Each set of vibratory feeders 2 stores multiple identical accessories. The vibratory feeders 2 employ electromagnetic or pneumatic vibration structures, with a spirally ascending feeding track on their inner walls. Vibration causes the randomly arranged accessories to align along the track and be output one by one. Each set of vibratory feeders 2 has an output track 3 at its output end. The output track 3 is made of bent stainless steel plate or U-shaped plastic profile, with its inner groove width matching the size of the corresponding accessory, guiding the accessory from the vibratory feeder 2 to the next workstation. In this embodiment, a box structure is provided outside each vibratory feeder 2. The top of the box structure is open, facilitating the replenishment of accessories to each vibratory feeder 2. The top of the box structure has an openable and closable cover. During normal packaging, the cover can close the opening at the top of the box structure, thereby protecting the vibratory feeder 2.

[0043] Please see Figures 1-3 The collecting track 4 is mounted on the frame 1, located below or at the end of the outlets of all the output tracks 3. The collecting track 4 can receive and transport the accessories exported from the four output tracks 3. The collecting track 4 can be a gravity-fed inclined track or an active conveyor track with a conveyor belt. In this embodiment, the collecting track 4 is arranged at an incline, and the accessories slide down the inclined surface of the collecting track 4 under the action of gravity. In order to ensure that the accessories do not stack or jam during the transport process, the width of the collecting track 4 is slightly larger than the width of the largest accessory, and the track surface can be attached with a polytetrafluoroethylene wear-resistant strip to reduce the coefficient of friction. Please see Figures 8-10 The weighing platform 5 can receive the accessories exported from the collection track 4 and weigh these accessories. The core component of the weighing platform 5 is a high-precision resistance strain gauge load cell, whose upper surface is covered with a flat metal plate. When the accessories fall from the collection track 4 onto the weighing platform 5, the load cell detects the total weight in real time and converts the weight signal into an electrical signal output. The range and accuracy of the weighing platform 5 are selected according to the total weight of a single package of accessories. For example, the range is 0-500 grams and the accuracy is ±0.1 grams.

[0044] Please see Figures 1-2Two discharge tracks 6 are symmetrically arranged on both sides of the weighing platform 5 along the first direction X. The ends of the two discharge tracks 6 away from the weighing platform 5 are inclined downwards. The discharge tracks 6 are made of stainless steel bent channel steel, and their inclination angle is 15 degrees to 30 degrees to ensure that the parts can slide down automatically by gravity. The two discharge tracks 6 are used to output parts with different judgment results: one is used to output parts with qualified weight (i.e., the number of parts is correct), and the other is used to output parts with defective weight (i.e., the number of parts is too much or too little). In this embodiment, the discharge track 6 on the left is used to output defective parts, and a collection box is placed below the left discharge track 6 to collect defective parts; the discharge track 6 on the right is used to output qualified parts, and the lower end of the right discharge track 6 is connected to the bag making and sealing mechanism 16. In this embodiment, please refer to Figure 1 and Figure 5 The bag-making and sealing mechanism 16 includes an unwinding roller 1601, a tensioning roller 1602, a spreading mechanism 1603, a sealing mechanism 1604, a hot-pressing mechanism 1605, and a cutting mechanism. The unwinding roller 1601 is installed on the lower right side of the frame 1 and adopts an air-expanding shaft structure to fix the rolled polyethylene film. The tensioning roller 1602 consists of several parallel chrome-plated steel rollers with a rubber coating on the surface, and tension is provided by tension springs on both sides. The spreading mechanism 1603 is a gradually narrowing U-shaped structure. The metal guide plate can bend the two sides of the flat film upwards and gradually bring them together to form a tube shape; the sealing mechanism 1604 is a pair of vertically arranged heating rollers that can heat and press the overlapping parts of the tubular film to complete the longitudinal sealing; the hot pressing mechanism 1605 includes an upper hot pressing block and a lower hot pressing block, which are used to seal the top and bottom of the packaging bag, respectively; the cutting mechanism is located below the hot pressing mechanism 1605 and uses a hot cutting knife, which can cut and separate the bag from the continuous film while completing the top sealing.

[0045] Please see Figure 2 , Figure 4 as well as Figure 5 The bearing seat 7 is fixed to the frame 1 by bolts and is located below the outlet of the collection track 4. The bearing seat 7 can support the weighing platform 5 and the two discharge tracks 6. The bearing seat 7 forms a front side plate and a rear side plate in the second direction Y of the weighing platform 5. The second direction Y is perpendicular to the first direction X, that is, the front side plate and the rear side plate are located on the front and rear sides of the weighing platform 5 respectively, which play a limiting and guiding role to prevent the parts from falling from the front and rear directions. The bearing seat 7 can be made of cast aluminum alloy or welded steel plate structure to ensure sufficient rigidity. Please see Figures 5-12Two push plates 8 are respectively arranged at intervals on both sides of the weighing platform 5 along the first direction X; the two push plates 8 are made of wear-resistant engineering plastics such as polyoxymethylene or nylon, and the side facing the weighing platform 5 is a flat pushing surface; the two push plates 8 can move synchronously on the bearing seat 7 along the first direction X; when the two push plates 8 are in the initial position, they are respectively close to the two side edges of the weighing platform 5, which can prevent the accessories on the weighing platform 5 from entering the two discharge tracks 6; during the process of the two push plates 8 moving synchronously to one side in the first direction X, one push plate 8 and the weighing platform 5 form a discharge port that connects to one discharge track 6, and the other push plate 8 pushes the accessories on the weighing platform 5 into the discharge port.

[0046] In this embodiment, the front side plate, the rear side plate, and the two push plates 8 together form a weighing space above the weighing platform 5. Please refer to [link to relevant documentation]. Figure 5 A funnel-shaped collecting sleeve 17 is provided at the lower end of the collecting track 4. The collecting sleeve 17 is fixed to the frame 1. The inner diameter of the collecting sleeve 17 is larger at the top and smaller at the bottom. The accessories leading out from the lower end of the collecting track 4 enter from the top of the collecting sleeve 17 and then enter the weighing space downwards in the collecting sleeve 17; please refer to Figure 1 , Figure 2 as well as Figure 4 To prevent parts from flying out due to inertia when leaving the collection track 4, a collection cover 18 is provided above the collection sleeve 17. The collection cover 18 is fixed to the outside of the collection sleeve 17 with screws. The collection cover 18 forms a U-shaped enclosure from the front and left and right sides of the collection sleeve 17 to ensure that the parts leaving the collection track 4 accurately enter the collection sleeve 17.

[0047] When it is necessary to push the accessories on the weighing platform 5 towards the left discharge track 6, the two push plates 8 move to the left simultaneously. Please refer to [link / reference needed]. Figure 10 At this time, a gap gradually forms between the left push plate 8 and the left edge of the weighing platform 5. This gap is the discharge port, which connects to the left discharge track 6. Meanwhile, the right push plate 8 starts to push from the right edge of the weighing platform 5 to the left, pushing all the accessories on the weighing platform 5 into the left discharge port. Conversely, when the two push plates 8 move to the right simultaneously, the right discharge port opens, and the left push plate 8 pushes the accessories into the right discharge track 6.

[0048] The synchronous drive mechanism 9 can drive the two push plates 8 to move synchronously in the first direction X. The synchronous drive mechanism 9 can be a screw 901 nut mechanism, a synchronous belt mechanism, or a gear and rack mechanism. Its core is to ensure that the two push plates 8 move in the same direction and have equal displacement. In this embodiment, please refer to Figure 7 and Figure 8The bearing seat 7 has a rectangular assembly groove 701 inside, and a long sliding groove 702 is formed on the side wall of the rear plate. The length direction of the sliding groove 702 extends along the first direction X. The synchronous drive mechanism 9 includes a lead screw 901, two transmission seats 902, and a drive motor 903. The two ends of the lead screw 901 are mounted on the left and right end walls of the assembly groove 701 through rolling bearings. The outer wall of the lead screw 901 is machined with a continuous external thread in a single direction. In this embodiment, a right-hand thread is used. The main body of the two transmission seats 902 is located inside the assembly groove 701. The upper extensions of the two transmission seats 902 both pass through the same sliding groove 702 and are able to... The two transmission seats 902 slide left and right along the first direction X in the sliding groove 702. The upper extensions of the two transmission seats 902 are respectively fixed to the corresponding push plates 8 by screws. Each of the two transmission seats 902 has a nut block fixed by bolts. The internal threads of the two nut blocks are right-hand threads, which are the same as the external threads of the lead screw 901. The drive motor 903 is a stepper motor, which is fixed on the outer wall of the bearing seat 7. The output shaft of the drive motor 903 is connected to one end of the lead screw 901 through a coupling. When the drive motor 903 rotates forward, the lead screw 901 rotates, and the two transmission seats 902 move to the left at the same time. When the drive motor 903 rotates in reverse, the two transmission seats 902 move to the right at the same time. The controller can receive the weighing result from the weighing platform 5, compare the weighing result with the preset value, and finally control the synchronous drive mechanism 9 to perform the drive action. The controller adopts a programmable logic controller. Its digital output port controls the forward and reverse rotation and start and stop of the drive motor 903 through a relay, and the analog input port receives the weight signal from the weighing sensor.

[0049] The working process of the automatic packaging machine in this embodiment is as follows: First, the operator pours the four types of door lock accessories into four vibratory feeders 2 respectively. After starting the equipment, the vibratory feeders 2 start working. Each vibratory feeder 2 outputs the accessories required for each package to the output track 3. The accessories slide down the output track 3 to the collection track 4. The collection track 4 transports the accessories to the weighing platform 5. The weighing platform 5 weighs the accessories. Then the weighing platform 5 reads the total weight and sends it to the controller. The controller compares the measured weight with the preset qualified range. If the measured weight is within the acceptable range, the controller controls the drive motor 903 to reverse, and the drive motor 903 drives the lead screw 901 to rotate, causing the two transmission seats 902 to move to the right simultaneously. The gap between the right push plate 8 and the weighing platform 5 gradually widens to form a discharge port, which is connected to the right discharge track 6. During this process, the left push plate 8 pushes all the accessories on the weighing platform 5 from left to right. The accessories are pushed into the right discharge port and then slide down along the right discharge track 6 to the bag making and sealing mechanism 16. After receiving the accessories, the bag making and sealing mechanism 16 completes bag making, sealing, and cutting, and finally outputs a complete and qualified accessory package. After the material is pushed, the controller controls the drive motor 903 to rotate forward, causing the two transmission seats 902 to move to the left simultaneously and return to the initial position. If the measured weight exceeds the acceptable range, the controller controls the drive motor 903 to rotate forward, and the two transmission seats 902 move to the left at the same time. The left discharge port opens, and the right push plate 8 pushes the part to the left into the left discharge track 6. The part finally falls into the collection box and is treated as a defective product. After the material is pushed, the controller controls the drive motor 903 to rotate in reverse, so that the two transmission seats 902 move to the right at the same time and return to the initial position. After the two push plates 8 return to their initial positions, they close the two sides of the weighing platform 5 again to prepare for the next weighing and material feeding. The vibratory plate 2 continues to feed out the next batch of parts.

[0050] Example 2

[0051] Based on Example 1, this embodiment further optimizes the structure of the automatic packaging machine; Please see Figure 6 and Figure 7 In this embodiment, a detachable protective cover 10 is provided on the support seat 7. The protective cover 10 is made of 5 mm thick transparent acrylic sheet, and its shape matches the groove shape of the assembly groove 701. Countersunk holes are provided at the four corners of the protective cover 10, and it is fixed to the upper surface of the support seat 7 by stainless steel countersunk screws. The protective cover 10 can prevent dust, debris and accidentally dropped parts from entering the assembly groove 701, and protect the lead screw 901 and the transmission seat 902 from contamination. When it is necessary to inspect or replace the various structures in the assembly slot 701, removing the protective cover 10 will create a larger operating space, making inspection and replacement operations convenient.

[0052] Example 3

[0053] Based on Embodiment 1 and / or Embodiment 2, this embodiment further optimizes the structure of the automatic packaging machine; Please see Figure 7 , Figure 8 , Figure 11 as well as Figure 12In this embodiment, a locking mechanism is added to the assembly groove 701. A locking block 9021 is integrally formed on the side wall of each of the two transmission seats 902. The locking block 9021 is a rectangular block with a chamfer facing the locking seat 11. A locking seat 11 is provided in the assembly groove 701. The locking seat 11 is a long strip metal structure made of No. 45 steel. Two guide posts 1401 are spaced apart along the first direction X on the bottom surface of the assembly groove 701. Two guide grooves 1402 extending along the second direction Y are provided on the locking seat 11. The two guide posts 1401 are slidably connected in the two guide grooves 1402 along the second direction Y, so that the locking seat 11 can slide in the assembly groove 701 along the second direction Y. The locking seat 11 has two locking grooves 1101 machined on the side wall near the two locking blocks 9021. The shape of the locking grooves 1101 is complementary to the shape of the locking blocks 9021. When the push plate 8 is in the initial position, the two locking blocks 9021 and the two locking grooves 1101 are on the same axis in the second direction Y. A locking switching mechanism is provided in the assembly slot 701 to drive the locking seat 11 to move in the second direction Y. The locking switching mechanism includes a fixed shaft 1201, an L-shaped rod 1202, a metal block 1203, an electromagnet 1204, and a return spring 1205. The fixed shaft 1201 is welded to the middle of the rear side of the locking seat 11. The middle part of the L-shaped rod 1202 is rotatably mounted on the bottom plate of the assembly slot 701 by a pin. The L-shaped rod 1202 is an injection molded part, and its first end has a waist-shaped connecting groove 1202. 1. The fixed shaft 1201 is inserted into the connecting groove 12021 and can slide within the connecting groove 12021. The electromagnet 1204 is fixed to the rear side wall of the assembly groove 701 by the bracket. The coil lead of the electromagnet 1204 is connected to the digital output port of the controller. The metal block 1203 is an iron block, which is fixed to the side wall of the second end of the L-shaped rod 1202 facing the electromagnet 1204 by screws. The reset spring 1205 is a compression spring, one end of which abuts against the inner wall of the assembly groove 701 and the other end abuts against the rear side of the locking seat 11. When the equipment is in normal working condition and the push plate 8 needs to move, the controller controls the electromagnet 1204 to be energized. The electromagnet 1204 generates magnetic attraction to the metal block 1203, causing the second end of the L-shaped rod 1202 to swing backward. The first end of the L-shaped rod 1202 also swings backward, pulling the fixed shaft 1201 and the locking seat 11 backward through the connecting groove 12021. At this time, the return spring 1205 is compressed, the locking groove 1101 is disengaged from the card block 9021, and the transmission seat 902 can slide along the first direction X under the drive of the lead screw 901. When the equipment stops or the position of the push plate 8 needs to be locked, the controller controls the electromagnet 1204 to be de-energized, the electromagnet 1204 loses its magnetism, at this time the reset spring 1205 releases its elastic force, pushing the locking seat 11 to move forward, the L-shaped rod 1202 swings back to reset under the drive of the fixed shaft 1201, and the locking groove 1101 is re-fitted onto the outside of the card block 9021, thereby restricting the movement of the transmission seat 902 in the first direction X; Please see Figure 11 and Figure 12 In this embodiment, two stop blocks 1301 are also provided on both sides of the locking seat 11. The two stop blocks 1301 are fixed on the side wall of the assembly groove 701. A lug 1302 is provided on the side wall of both sides of the locking seat 11. When the return spring 1205 pushes the locking seat 11 to move forward, the lug 1302 will first contact the stop block 1301, thereby restricting the locking seat 11 from continuing to move forward. At this time, a certain gap is maintained between the bottom surface of the locking groove 1101 and the end face of the locking block 9021 to avoid unnecessary friction. In this embodiment, the length of the second end of the L-shaped rod 1202 is approximately twice the length of the first end, forming a significant lever ratio. A rubber friction block is fitted onto the end of the second end of the L-shaped rod 1202. The operator can manually drive the L-shaped rod 1202 to swing by flicking the friction block with their fingers, thereby unlocking it during maintenance or when the electromagnet 1204 fails.

[0054] Example 4

[0055] Based on Embodiment 1 and / or Embodiment 2 and / or Embodiment 3, this embodiment further optimizes the structure of the automatic packaging machine; This embodiment features an observation port and a transparent observation plate 15 on the front panel. Please refer to [link / reference needed]. Figure 5 An oblong observation port is provided on the front side panel opposite to the weighing platform 5. A 3 mm thick tempered glass plate is embedded in the observation port as the observation plate 15. The observation plate 15 is fixed by a silicone sealing strip. The operator can use the observation plate 15 to check in real time whether there are any parts residues or material jams on the weighing platform 5, and can carry out daily inspections without stopping the machine.

[0056] The embodiments of the present invention have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other. The present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.

Claims

1. An automatic packaging machine for packaging installation accessories for door locks, characterized in that, include: A frame (1) is provided with multiple sets of vibrating plates (2), each set of vibrating plates (2) contains multiple identical accessories, and each set of vibrating plates (2) has an output track (3) at its output end. The material collection track (4) is disposed on the frame (1) and can receive and transport the accessories exported from the plurality of the export tracks (3). Weighing platform (5), which can receive the accessories exported from the collection track (4) and weigh these accessories; Two discharge tracks (6) are symmetrically arranged on both sides of the weighing platform (5) along the first direction (X), and the ends of the two discharge tracks (6) away from the weighing platform (5) are inclined downward. The support seat (7) is disposed on the frame (1). The support seat (7) can support the weighing platform (5) and the two discharge tracks (6). The support seat (7) forms a front side plate and a rear side plate in the second direction (Y) of the weighing platform (5). Two push plates (8) are respectively arranged at intervals on both sides of the weighing platform (5) along the first direction (X). The two push plates (8) can move synchronously on the bearing seat (7) along the first direction (X). When the two push plates (8) are in the initial position, they can prevent the accessories on the weighing platform (5) from entering the two discharge tracks (6). During the process of the two push plates (8) moving synchronously to one side in the first direction (X), one push plate (8) forms a discharge port connecting one of the discharge tracks (6) with the weighing platform (5), and the other push plate (8) pushes the accessories on the weighing platform (5) into the discharge port. Synchronous drive mechanism (9), which can drive the two push plates (8) to move synchronously in the first direction (X); The controller can receive the weighing result of the weighing platform (5), compare the weighing result with the preset value, and finally control the synchronous drive mechanism (9) to perform the drive action.

2. The automatic packaging machine for packaging door lock installation accessories according to claim 1, characterized in that: The bearing seat (7) is provided with an assembly groove (701), and the synchronous drive mechanism (9) is provided in the assembly groove (701). The side wall of the rear side plate is provided with a sliding groove (702) communicating with the assembly groove (701). The synchronous drive mechanism (9) includes a lead screw (901), two transmission seats (902), and a drive motor (903). The lead screw (901) is rotatably disposed in the assembly groove (701). The two transmission seats (902) are slidably connected to the sliding groove (702) along the first direction (X). The two transmission seats (902) are respectively connected to the two push plates (8). The two transmission seats (902) are each provided with a nut block that is connected to the lead screw (901) in a transmission manner. The drive motor (903) can drive the lead screw (901) to rotate.

3. The automatic packaging machine for packaging door lock installation accessories according to claim 2, characterized in that: The support base (7) is provided with a detachable protective cover (10), which can cover the opening of the assembly groove (701).

4. The automatic packaging machine for packaging door lock installation accessories according to claim 2, characterized in that: Both transmission seats (902) are provided with locking blocks (9021). A locking seat (11) is slidably disposed in the assembly groove (701) along the second direction (Y). The locking seat (11) is provided with two locking grooves (1101) on the side wall near the two locking blocks (9021). When the two push plates (8) are in the initial position, the two locking blocks (9021) and the two locking grooves (1101) are opposite to each other. A locking switching mechanism is provided in the assembly groove (701). The locking switching mechanism can drive the locking seat (11) to move in the second direction (Y), so that the two locking blocks (9021) enter or exit the two locking slots (1101). When the two locking blocks (9021) enter the two locking slots (1101), the movement of the transmission seat (902) in the first direction (X) is restricted. When the two locking blocks (9021) exit the two locking slots (1101), the transmission seat (902) can move in the first direction (X).

5. The automatic packaging machine for packaging door lock installation accessories according to claim 4, characterized in that: The locking switching mechanism includes a fixed shaft (1201), an L-shaped rod (1202), a metal block (1203), an electromagnet (1204), and a return spring (1205). The fixed shaft (1201) is mounted on the locking seat (11). The middle part of the L-shaped rod (1202) is rotatably mounted in the assembly groove (701). The first end of the L-shaped rod (1202) is provided with a connecting groove (12021). The fixed shaft (1201) is located in the connecting groove (12021). The electromagnet (1204) is located on one side of the L-shaped rod (1202). The metal block (1203) is located on the side wall of the second end of the L-shaped rod (1202) near the electromagnet (1204). The return spring (1205) is located on the... Between the assembly slot (701) and the locking seat (11), the electromagnet (1204) generates magnetism when energized, attracting the metal block (1203) and causing the L-shaped rod (1202) to swing. The L-shaped rod (1202) drives the locking seat (11) away from the transmission seat (902) through the cooperation of the connecting slot (12021) and the fixed shaft (1201). During this process, the return spring (1205) is compressed. When the electromagnet (1204) is de-energized, it loses its magnetism. At this time, the L-shaped rod (1202) is reset under the elastic force of the return spring (1205). Through the cooperation of the connecting slot (12021) and the fixed shaft (1201), the locking seat (11) is driven closer to the transmission seat (902).

6. The automatic packaging machine for packaging door lock installation accessories according to claim 5, characterized in that: The locking switching mechanism also includes two stop blocks (1301), which are respectively disposed on both sides of the locking seat (11). The two stop blocks (1301) are fixed in the assembly groove (701). Lugs (1302) are provided on the side walls of both sides of the locking seat (11). During the reset process of the L-shaped rod (1202) driven by the reset spring (1205), the two lugs (1302) can contact the two stop blocks (1301) to restrict the locking seat (11) from continuing to approach the transmission seat (902). At this time, the side wall of the locking groove (1101) does not contact the transmission seat (902) in the second direction (Y).

7. The automatic packaging machine for packaging door lock installation accessories according to claim 5, characterized in that: The length of the second end of the L-shaped rod (1202) is greater than the length of the first end, and the second end of the L-shaped rod (1202) is provided with a friction block for manual force application.

8. The automatic packaging machine for packaging installation accessories of door locks according to any one of claims 1-7, characterized in that: An observation port is provided at the position opposite to the weighing platform (5) on the front side plate, and a transparent observation plate (15) is provided in the observation port.

9. The automatic packaging machine for packaging installation accessories of door locks according to any one of claims 1-7, characterized in that: A collection frame for collecting defective products is provided below one of the discharge tracks (6), and a bag making and sealing mechanism (16) is provided at the lower end of the other discharge track (6). The bag making and sealing mechanism (16) can make packaging bags below the discharge track (6) for accessories to enter, and can seal the packaging bags.

10. The automatic packaging machine for packaging installation accessories of door locks according to claim 8, characterized in that: The bag making and sealing mechanism (16) includes an unwinding roller (1601), a tensioning roller (1602), a spreading mechanism (1603), a sealing mechanism (1604), a hot pressing mechanism (1605), and a cutting mechanism. The unwinding roller (1601) is used to unwind the packaged bag roll into a sheet shape. The tensioning roller (1602) is used to tension and guide the sheet-shaped packaged bag roll into the spreading mechanism (1603). The spreading mechanism (1603) is used to bring the two sides of the sheet-shaped packaged bag roll closer together to form a cylinder. The sealing mechanism (1604) is used to seal the sides of the cylindrical packaged bag. The hot pressing mechanism (1605) is used to seal the bottom and top of the packaged bag. After the bottom of the packaged bag is sealed, the accessories on the discharge track (6) enter the packaged bag. Then the packaged bag moves downward and the top of the packaged bag is sealed. The cutting mechanism is used to cut and separate the complete packaged bag from the continuous packaged bag roll.

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