Re-inspection machine

Abstract

The utility model relates to a re-checking machine which specifically comprises a conveying part used for conveying products along a first path; the weighing part is arranged below the conveying part and can be used for weighing the product and judging whether the weight of the product meets the expectation or not in response to the condition that the product is conveyed to a preset position; and the rejecting part is fixed with the conveying part, is in electric connection / communication connection with the weighing part, and can respond to a signal representing that the weight of the product does not conform to the expectation to switch the conveying path of the product to a second path so as to reject the corresponding product from the self-weight inspection machine. By ingeniously integrating the removing mechanism and the weighing function of the heavy inspection machine, the problem that the traditional heavy inspection removing operation needs to depend on two independent devices, and the occupied area is large is effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of the weight of product is detected, specifically relates to a kind of heavy inspection machine. BACKGROUND

[0002] With the social development and progress, factory production in each field gradually realizes automation, and higher requirements are proposed to equipment, and in traditional production process, the accurate detection of the weight of product and the timely rejection of unqualified product usually rely on a relatively fixed mode: first deploy a heavy inspection machine with weight detection function, responsible for the weight verification of product;After the operating position of this heavy inspection machine, a special rejection equipment is configured, to separate unqualified product that does not reach preset weight standard from production line. Although this configuration meets the basic needs of production quality control to some extent, the inherent separated structure inevitably occupies relatively large space, which undoubtedly constitutes not small challenge and limitation for those factories that are short of space resources and pursue ultimate compactness in layout.

[0003] Therefore, how to further optimize equipment layout and reduce space occupation while maintaining efficient production quality control has become a key problem to be solved in current factory automation upgrade. INNOVATIVE CONTENT

[0004] The utility model innovatively provides a kind of highly integrated heavy inspection machine solution, and the heavy inspection machine fuses the dual function of weight detection and unqualified product rejection, to effectively solve the problems of large floor area and low efficiency in traditional heavy inspection and rejection process.

[0005] The heavy inspection machine of the utility model is composed of conveying part, weighing part and rejection part.

[0006] The conveying part is used to convey products along the first path, to ensure that products can accurately reach the weighing part for weighing. The conveying part includes conveying mechanism, which can be conveying belt, roller, chain, etc. The conveying part should also include motor and transmission device for driving these conveying mechanisms. In addition, the conveying part also includes sensors (such as entrance photoelectric, position sensor, etc.), for detecting the position and / or state of products.

[0007] The weighing part is arranged below the conveying part, and can weigh the product and determine whether the weight of the product meets the expectation in response to the product being conveyed to the preset position. The weighing part can be configured to include a weighing sensor, a signal processing circuit, and a communication interface. The weighing sensor is used to directly sense the weight of the product and convert it into an electrical signal; the signal processing circuit is used to amplify, filter, and digitize the signal output by the sensor; and the communication interface is used to transmit the processed signal to the rejection part or other control system. The weighing sensor can use the strain principle to convert the gravity or mass signal of the measured object into a measurable electrical signal output. This conversion process is achieved through the resistance change of the strain gauge, the imbalance of the Wheatstone bridge, and the amplification and processing of the signal.

[0008] The rejection part is fixed with the conveying part and electrically connected or communicatively connected with the weighing part, and can switch the conveying path of the product to the second path in response to the signal representing that the weight of the product does not meet the expectation, so as to reject the corresponding product from the weight checker. Specifically, the rejection part includes a motor, a transmission mechanism (such as a gear, a chain, or a belt), a guide mechanism (such as a sliding rail or a guide wheel), and an execution mechanism (such as a pneumatic cylinder or a clamping jaw) for clamping or pushing the product. These mechanisms work together to realize the path switching and rejection action of the product.

[0009] According to the technical scheme, the weighing module and the rejection module are integrated into the same mechanical structure by adopting the conveying path switching mechanism. Under the premise of basically not changing the floor area, the weighing function is retained while realizing the immediate rejection operation of the unqualified product, successfully avoiding the improper cooperation problem that may occur in the cooperative operation process of two devices, and improving the accuracy of the rejection operation. At the same time, compared with the traditional scheme in which the weighing and rejection functions are respectively arranged in independent devices, this integration strategy significantly optimizes the space utilization efficiency, saves space, and makes the operation more efficient.

[0010] As a preferred technical scheme, the rejection part can drive the conveying part to rotate from the first path to the second path in response to the signal representing that the weight of the product does not meet the expectation sent by the weighing part.

[0011] According to the technical scheme, the conveying path of the product is switched by directly rotating the conveying part, which has higher flexibility compared to other rejection modes of switching paths, allowing the system to adjust the conveying direction of the product according to real-time signals sent by the weighing part, ensuring that unqualified products can be effectively rejected. At the same time, compared to traditional path switching mechanisms such as sliding rails, lifting platforms or complex mechanical arms, the design of rotating the conveying part to switch the path further simplifies the mechanical structure. This not only reduces the number of components, reduces manufacturing and maintenance costs, but also improves the overall reliability and stability of the system. Since rotating action is usually faster and more direct than sliding or lifting action, this scheme can achieve path switching faster, thereby improving rejection efficiency. Because the simple design of the rotating conveying part is usually more compact than traditional path switching mechanisms, it can further improve the utilization of production space.

[0012] As a preferred technical scheme, the re-inspection machine further comprises a front-end conveying line and a rear-end conveying line, the front-end conveying line is located at the front end of the first path, and the rear-end conveying line is located at the rear end of the first path. Specifically, the front-end and rear-end conveying lines are composed of a conveying belt and a driving device, the conveying belt is used to carry and transport products, and the driving device is used to provide power.

[0013] According to the technical scheme, the front-end conveying line is used to convey products from upstream equipment (such as a packaging machine) to the conveying part of the re-inspection machine, realizing seamless connection of the production line, and the rear-end conveying line is used to transport qualified products from the conveying part to downstream equipment (such as a transport vehicle). Through the cooperation of the front-end and rear-end conveying lines and the conveying part, a highly integrated automated operation system is formed, ensuring the continuity and smoothness of the production process, avoiding production interruption and efficiency loss, realizing the automation of the whole process of packaging, weighing, rejecting and transporting, reducing the dependence on manual operation, thereby effectively reducing the error rate caused by human factors, and significantly improving the production efficiency through the high automation of the process, ensuring the stability and reliability of the product quality.

[0014] As a preferred technical scheme, the re-inspection machine further comprises an alarm lamp, the alarm lamp is connected with the weighing part through electrical connection (such as cable) or communication connection (such as wireless signal) to realize data transmission, and can be turned on in response to signals indicating that the weight of the product does not match the expected value. The light source of the alarm lamp adopts LED lamp beads of different colors, usually red for warning or error, green for normal state, and yellow or other colors for other specific states. The alarm lamp further comprises a control circuit and a driving circuit inside, for receiving signals from the weighing part and controlling the lighting and extinguishing of the LED lamp beads.

[0015] According to the technical scheme, the setting of the alarm lamp can remind the operator to pay attention to the appearance of unqualified products at the first time. Once the alarm lamp is on, the operator can respond quickly and immediately check and adjust the upstream product manufacturing process, effectively avoiding the continuous accumulation and spread of unqualified factors on the production line, and fundamentally reducing the rate of defective products. More importantly, the application of the alarm lamp can prompt the operator to remain vigilant at all times and quickly respond to any abnormal changes in the production process, effectively preventing potential safety hazards from turning into actual accidents, and ensuring the safety of employees and the integrity of production facilities.

[0016] As a preferred technical scheme, the re-inspection machine further comprises side guide plates located on both sides of the conveying part for limiting the relative position of the product and the conveying part. The size of the side guide plates is usually determined according to the width of the conveying part and the size of the product to ensure that the product can be fully covered and effectively supported.

[0017] According to the technical scheme, when the re-inspection machine detects unqualified products and the rejection part needs to switch paths, the side guide plates can limit the product on the conveying part, ensuring that the product will not accidentally slide out of the side of the conveying part due to its own inertia or slight vibration during the path switching process of the conveying part, causing interruption of the production process or damage to the product. In addition, the side guide plates also have a certain degree of adjustability and adaptability, allowing for flexible configuration and adjustment according to the characteristics and needs of different products on the production line. This design not only improves the flexibility and versatility of the production line, but also ensures that even when faced with diversified and complex production tasks, the side guide plates can still limit the position of the product to prevent it from slipping and ensure the continuity and stability of the conveying process.

[0018] As a preferred technical scheme, the weighing part comprises a weighing cylinder, a fixed plate, and a weighing sensor, the weighing cylinder is connected to the weighing sensor through the fixed plate, and the fixed plate does not contact the conveying part. When the product is conveyed to the preset position, the weighing cylinder is lifted and abuts against the lower surface of the product, separating the product from the upper surface of the conveying part, so that the weighing sensor can weigh the product. The core components of the weighing cylinder are the cylinder, the piston, and the piston rod, which are connected to the external product contact load, converting the reciprocating motion of the cylinder into the lifting and falling motion of the external product. The fixed plate is made of rigid material and is not prone to deformation under stress.

[0019] According to the technical scheme, the product is lifted by the weighing cylinder to separate it from the upper surface of the conveying part, thereby ensuring that only the weight of the product is received by the weighing sensor during weighing. This design avoids potential interference from the movement or weight of the conveying part (such as a conveyor belt) on the weighing of the product, improving the accuracy and precision of the weighing.

[0020] The fixed plate, as an intermediate part connecting the weighing cylinder and the weighing sensor, is designed not to directly contact the conveying part, effectively isolating the vibrations, friction and other interference factors that may occur in the conveying part, further reducing the error sources in the weighing process, and making the weighing result more reliable.

[0021] Because the weighing cylinder can stably lift the product and accurately transmit the weight to the weighing sensor through the fixed plate, this design enhances the stability and reliability of the entire weighing system. Even in a fast or continuous production environment, it can maintain high-precision weighing performance.

[0022] Because the structure of key components such as the weighing cylinder, fixed plate and weighing sensor is relatively simple, it is easy to maintain and maintain. When a fault occurs or regular maintenance is required, the problem can be quickly located and solved, reducing downtime.

[0023] As a preferred technical solution, the conveying part includes an entrance photoelectric and a solenoid valve. The entrance photoelectric is located at the entrance of the weighing part, and the solenoid valve is located at the exit of the weighing part. Through time delay control, the product is conveyed to the preset position.

[0024] Through the coordinated work of the entrance photoelectric, solenoid valve and conveying part, precise control of product conveying is achieved. The entrance photoelectric, as a signal trigger, can accurately detect the time when the product arrives at the entrance of the weighing part, while the solenoid valve, as an executive element, controls the motion state of the conveying part after receiving the control signal, ensuring that the product is accurately conveyed to the predetermined position of the weighing part for weighing. This design greatly improves the accuracy and reliability of weighing. At the same time, the combination of entrance photoelectric and solenoid valve allows the system to be flexibly adjusted according to different product sizes, weights and conveying speeds. By adjusting the time delay control parameters, the system can adapt to different production demands, ensuring that the product is always accurately stopped at the predetermined position of the weighing part.

[0025] As a preferred technical solution, the rejection part includes a rotary cylinder, a second connecting plate, a transmission device, a rotary disc and a rotary shaft. The upper end of the rotary shaft is fixedly connected to the conveying part through the second connecting plate, and the lower end of the rotary shaft is fixedly connected to the rotary disc through the transmission device. One end of the rotary cylinder is fixed, and the other end is connected to the rotary disc and can be extended in response to a signal sent by the weighing part indicating that the product weight does not match the expectation, driving the rotary disc to rotate. The transmission device transmits the rotation of the rotary disc to the rotary shaft, which drives the conveying part to rotate from the first path to the second path. The transmission device can be a transmission belt or a transmission chain. The core component of the rotary cylinder is similar to that of the weighing cylinder, with the difference being that the piston rod of the rotary cylinder is connected to the rotary disc through a connecting mechanism, converting the reciprocating motion of the cylinder into the rotary motion of the rotary disc.

[0026] According to the technical solution, the rotating cylinder provides rotational power to the conveying part, and the transmission device composed of transmission belts or chains realizes efficient and rapid transfer of kinetic energy from the rejecting part to the conveying part. This design ensures that when the product conveying path needs to be switched, the rotating cylinder can quickly respond and drive the conveying part to rotate, thereby realizing rapid switching of the path.

[0027] Due to the flexibility of the rotating cylinder and the transmission device, this scheme can adapt to products of different sizes and weights, as well as different conveying speeds and path requirements. By adjusting the extension length of the rotating cylinder and the transmission ratio of the transmission device, the rotation angle and speed of the conveying part can be accurately controlled, thereby meeting the needs of different production scenarios. At the same time, by optimizing the design of the rotating cylinder and the transmission device, the system can effectively reduce noise and vibration during operation. This not only improves the quality of the working environment, but also prolongs the service life of the equipment.

[0028] As a preferred technical solution, a supporting block is installed on the top of the weighing cylinder. Specifically, the supporting block is arranged at the end of the piston rod of the weighing cylinder, and the upper surface area in the horizontal direction is larger than that of the end of the piston rod. On this basis, the design of the supporting block can be adjusted according to the shape and size of the product to better adapt to various types of products.

[0029] According to the technical solution, the installation of the supporting block on the top of the weighing cylinder can significantly increase the contact area between the weighing part and the product. This helps to disperse the pressure of the product on the weighing part, improves the stability of the weighing, and reduces the weighing error caused by uneven pressure distribution. At the same time, due to the increase in contact area by the supporting block, the product is more likely to remain stable during weighing, reducing measurement errors caused by shaking or tilting. Therefore, this scheme can more accurately reflect the actual weight of the product, improving the accuracy of weighing. The supporting block can also protect the weighing cylinder and the weighing sensor connected thereto to some extent. During the weighing process, the supporting block can absorb and disperse part of the impact force, reducing potential damage to the product and weighing components.

[0030] Optionally, the included angle between the first path and the second path in the horizontal direction can be any value in the range of 30°-150°, as long as the product can be conveyed from the weighing machine to the target position through the first path and the second path, respectively.

[0031] As a preferred technical solution, the first path and the second path form a 90° angle in the horizontal direction, i.e., the angle of rotation of the conveying part is 90°.

[0032] According to the technical scheme, compared with rotation at other angles, 90° rotation is a common and easy-to-implement mechanical action, and therefore the related mechanical design and control system can be simpler and more reliable. By reducing the complex path and sudden turning, the design of rotating by 90° also helps to reduce the safety risk of the operator during operation. Meanwhile, the design of rotating by 90° generally has good compatibility and can be easily integrated with other production line equipment or systems.

[0033] In summary, the re-inspection machine provided by the utility model realizes the accurate detection of the weight of products and the instant rejection of unqualified products in limited physical space through mechanical structure design combined with an electronic control system, which makes the equipment layout more flexible and adaptable to various compact production environments, effectively reduces the equipment purchase and operation cost of enterprises, and improves the overall economic benefit.

[0034] More importantly, the integrated design also improves production efficiency. Since the inspection and rejection operations are continuously completed on the same device, the time and manpower required for product transfer between different devices in the traditional process are reduced, the overall rhythm of the production line is accelerated, and the utility value and market application prospect are extremely high. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is a mechanical structure schematic diagram of the re-inspection machine provided by the embodiment of the utility model.

[0036] Figure 2 is a structure schematic diagram of the conveying part of the re-inspection machine.

[0037] Figure 3 is a structure schematic diagram of the weighing part of the re-inspection machine.

[0038] Figure 4 is a structure schematic diagram of the rejection part of the re-inspection machine.

[0039] Figure 5 is a product standby position of the re-inspection machine.

[0040] Figure 6 is a weighing part predetermined position of the re-inspection machine working process schematic diagram.

[0041] Figure 7 is a product weighing position of the re-inspection machine working process schematic diagram.

[0042] Figure 8 is a product descending position of the re-inspection machine working process schematic diagram.

[0043] Figure 9 is a good product conveying position of the re-inspection machine working process schematic diagram.

[0044] Figure 10is a defective product rotating position of the re-inspection machine working process schematic diagram.

[0045] Figure 11 is a defective product removing position of the re-inspection machine working process schematic diagram.

[0046] Reference signs: 1-product; 2-front end conveying line; 3-weighing part; 4-rear end conveying line; 5-conveying part; 6-removing part; 7-control box; 8-inlet photoelectric; 9-side guide plate; 10-locating block; 11-weighing cylinder; 12-fixed plate; 13-weighing sensor; 14-solenoid valve; 15-first connecting plate; 16-adapting block; 17-rotary cylinder; 18-second connecting plate; 19-transmission device; 20-rotary shaft; 21-rotary disc. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0048] The structural schematic diagram of the re-inspection machine of the present embodiment is shown in Figures 1-4 The main parts include the following:

[0049] The conveying part 5 includes a main body and a conveyor belt movably connected to the main body. The upper surface of the conveyor belt is used to place the product 1 thereon, and is used to stably convey the product 1 along a predetermined first path, so as to ensure that the product 1 can accurately reach a designated detection position.

[0050] The weighing part 3 is arranged below the conveying part 5, and at least includes a weighing cylinder 11, a fixed plate 12, a weighing sensor 13, and an adapting block 16. When the product 1 is conveyed to a predetermined weighing position, the weighing part 3 lifts the product 1 by the weighing cylinder 11, so that the product 1 is separated from the upper surface of the conveying part 5. At this time, the weighing cylinder 11 is connected to the weighing sensor 13 through the fixed plate 12, and the fixed plate 12 is stably connected to the adapting block 16 through the weighing sensor 13. It is worth noting that the fixed plate 12 does not directly contact the conveying part 5 throughout the process. This design ensures that the product 1 can be accurately weighed by the weighing sensor 13 without external interference, so as to accurately judge whether the weight of the product 1 meets the expectation.

[0051] The rejection unit 6 is electrically connected or communicatively connected with the weighing unit 3, and can switch the conveying path of the product 1 to the second path to reject the corresponding product 1 from the re-checking machine in response to a signal indicating that the weight of the product 1 does not match the expectation. The rejection unit 6 is composed of a rotary cylinder 17, a second connecting plate 18, a transmission device 19, a rotary disc 21 and a rotary shaft 20. When the weighing unit 3 detects that the weight of the product 1 does not match the expectation, an electrical signal / communication signal will be immediately sent to the rejection unit 6. At this time, the rotary cylinder 17 can extend and push the rotary disc 21 to rotate in response to the signal. Through the transmission device 19, the rotation of the rotary disc 21 is transmitted to the rotary shaft 20, which is fixedly connected with the conveying unit 5 through the second connecting plate 18 and can drive the conveying unit 5 to smoothly rotate from the first path to the second path, realizing the rapid rejection of unqualified products 1.

[0052] This design ingeniously integrates the weighing unit 3 and the rejection unit 6 in the same compact mechanical structure, compared with the traditional technical solution in which the two are separately arranged, not only saves space resources, but also improves the operation efficiency and flexibility of the whole device. Through the highly integrated structure design, the re-checking machine can respond more quickly to abnormal situations of the weight of the product 1 and take rejection measures in time, thereby ensuring the continuity of the production line and the stability of the quality of the product 1.

[0053] Optionally, the re-checking machine further comprises a front-end conveying line 2 and a rear-end conveying line 4, the front-end conveying line 2 is located at the front end of the first path, and the rear-end conveying line 4 is located at the rear end of the first path. The two conveying lines can also be connected with other production equipment, such as the front-end conveying line 2 can be seamlessly connected with a packing machine, and the rear-end conveying line 4 can be directly connected with a transport vehicle, thereby constructing a fully automated production process from packing, weighing and rejecting to transporting. This design greatly reduces human intervention and reduces error rate, and at the same time, by virtue of the highly automated process, the production efficiency is significantly improved, and the continuous stability and reliability of the quality of the product 1 are ensured.

[0054] Optionally, an entrance photoelectric sensor 8 and a solenoid valve 14 are respectively installed at the entrance and the exit of the weighing unit 3, which work cooperatively with the conveying unit 5 to accurately control the product 1 to stop at a predetermined position of the weighing unit 3, ensuring the accuracy of weighing.

[0055] Optionally, the weighing cylinder 11 can be configured as one or more as needed, and each cylinder is provided with a supporting block 10 at the top. Specifically, the supporting block 10 is arranged at the end of the piston rod of the weighing cylinder 11, and the upper surface area in the horizontal direction is larger than the upper surface area of the end of the piston rod. This design significantly increases the contact area between the weighing unit 3 and the product 1, further improving the stability and accuracy of weighing.

[0056] Optionally, the main body of the conveying part 5 is fixedly connected with the weighing part 3 through the first connecting plate 15, and the weighing part 3 is fixedly connected with the rejecting part 6 through the adapter block 16 and the second connecting plate 18. When the rejecting part 6 receives the unqualified product 1 signal and needs to switch the path, the conveying part 5 and the weighing part 3 can be driven to rotate together to realize the path switching.

[0057] Optionally, the side guide plates 9 are fixedly installed on both sides of the weighing part 3. When assembled with the conveying part 5, the side guide plates 9 are located on both sides of the conveying part 5. When the re-inspection machine detects the unqualified product 1, the rejecting part 6 needs to drive the conveying part 5 and the weighing part 3 to switch the path together, and the side guide plates 9 can limit the product 1 on the conveying part 5, avoiding the product 1 from sliding off the side of the conveying part 5 due to inertia, and ensuring the safety of the product 1 conveying.

[0058] Optionally, the re-inspection machine is also provided with a control box 7 and an alarm lamp. The control box 7 is fixedly installed on the frame of the re-inspection machine and is electrically connected or communicatively connected with the weighing part 3, so as to respond to the signal that the weight of the product 1 does not match the expectation in real time and immediately light up the alarm lamp. The alarm lamp indicates different states of the re-inspection machine by different colors. Red is used to indicate warning or error, green is used to indicate normal state, and yellow or other colors can be used to indicate other specific states. This design can timely remind the operator to check the equipment, so as to quickly adjust the front-end product 1 manufacturing process and avoid long-term existence of unqualified factors, which can cause adverse effects on the quality of subsequent products 1.

[0059] The structural schematic diagram of the re-inspection machine in standby state is shown in Figure 5 When the re-inspection machine is turned on, the product 1 is first conveyed to the conveying part 5 of the re-inspection machine by the front-end conveying line 2, and then the product 1 is sent to the predetermined position of the weighing part 3 by the conveying part 5. The structural schematic diagram of the weighing part 3 is shown in Figure 3 The weighing part 3 is fixedly installed below the conveying part 5 through the first connecting plate 15.

[0060] As shown in Figure 6 An entrance photoelectric sensor 8 is installed at the entrance of the weighing part 3, and a solenoid valve 14 is installed at the exit of the weighing part 3. The entrance photoelectric sensor 8 and the solenoid valve 14 can control the conveying part 5 to convey the product 1 to the preset position of the weighing part 3 through time delay.

[0061] As shown in Figure 8 When the product 1 reaches the specified position, the piston rod of the weighing cylinder 11 rises to lift the product 1 until it is completely separated from the conveying belt of the conveying part 5, and reaches the weighing position, as shown in Figure 7 After the weighing is completed, the piston rod of the weighing cylinder 11 is retracted, so that the product 1 falls back onto the conveying belt of the conveying part 5.

[0062] The structure of the rejecting part 6 is shown in Figure 4As shown, the core components thereof include a rotary cylinder 17 and a rotary disc 21. The rotary cylinder 17 is fixed at one end to the frame of the re-inspection machine and connected at the other end to the rotary disc 21. In the weight detection process of the product 1, if the product 1 meets the weight requirement, the product 1 will be directly sent out of the re-inspection machine along the first path by the conveying part 5 and then transported to the next work station by the rear conveying line 4. The specific process is as shown in Figure 9 If the product 1 does not meet the weight requirement, the alarm light will immediately light up, and the rotary cylinder 17 of the rejection part 6 will rotate the rotary disc 21 in response to the signal representing that the product 1 does not meet the weight requirement. The lower end of the rotary shaft 20 is tightly connected to the rotary disc 21 through a transmission device 19 (which can be a transmission chain or a transmission belt), and the upper end is fixedly connected to the conveying part 5 through a second connecting plate 18. Under the drive of the rotary disc 21, the transmission device 19 will transmit the rotary power to the rotary shaft 20, thereby driving the conveying part 5 to smoothly rotate 90° from the first path to the second path. Subsequently, the conveying part 5 will convey the unqualified product 1 out of the re-inspection machine along the second path, thereby achieving the reversed conveying and rejection of the defective product.

[0063] Optionally, although in this embodiment, the first path and the second path are shown as being substantially in the same plane in the horizontal direction and having an angle of 90°, this does not constitute a limitation on the present application. In some embodiments, the angle between the first path and the second path can be any value within the range of 30° to 150°, as long as the product can be conveyed from the re-inspection machine to the target position along the first path and the second path, respectively.

[0064] In other embodiments, the first path and the second path can also be arranged at different positions in the height direction or the horizontal direction in a three-dimensional space, for example, the first path can be arranged above, below, left or right of the second path. The first path and the second path can be switched by mechanical structures such as rotary joints, adjustable supports, etc. In order to adapt to different production scales or site restrictions, the mechanical structures forming the first path or the second path can be designed to be retractable or foldable. In this way, different production demands or space conditions can be more flexibly adapted to.

[0065] In this case, the rejection part 6 needs to be designed according to the specific layout and angle of the first path and the second path. As long as the technical effect of switching the defective product from the first path to the second path can be achieved, the design of the rejection part should ensure the smoothness and accuracy of the switching process to avoid damaging the product or causing additional measurement errors.

[0066] Through the above reasonable path design and switching mode, the product conveying process can be optimized, and the waiting time in the production process can be reduced. This helps to improve the production efficiency and reduce the production cost.

[0067] The technical scheme of the utility model has been described in connection with the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the utility model is obviously not limited to the above-mentioned specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without deviating from the principles of the utility model, and the technical schemes after the changes or replacements will all fall within the protection scope of the utility model.

Claims

1. A re-inspection machine, characterized in that: include: The conveying unit is used to transport products along a first path; A weighing unit, located below the conveying unit, is capable of weighing the product and determining whether the product weight meets expectations in response to the product being conveyed to a preset position. The rejection unit is fixed to the conveying unit and electrically or communicatively connected to the weighing unit. In response to a signal indicating that the weight of the product does not match the expectation, it can switch the conveying path of the product to a second path to reject the corresponding product.

2. The re-inspection machine according to claim 1, characterized in that, The rejection unit can respond to a signal sent by the weighing unit indicating that the weight of the product does not match the expectation, and drive the conveying unit to rotate from the first path to the second path.

3. The re-inspection machine according to claim 1 or 2, characterized in that, It also includes a front-end conveyor line and a rear-end conveyor line, wherein the front-end conveyor line is located at the front end of the first path and the rear-end conveyor line is located at the rear end of the first path.

4. The re-inspection machine according to claim 1 or 2, characterized in that, It also includes an alarm light, which is electrically or communicatively connected to the weighing unit and can be illuminated in response to a signal indicating that the product weight does not match the expected weight.

5. The re-inspection machine according to claim 1 or 2, characterized in that, It also includes side guide plates located on both sides of the conveying section to define the relative position of the product and the conveying section.

6. The re-inspection machine according to claim 1 or 2, characterized in that, The weighing unit includes a weighing cylinder, a fixed plate, and a weighing sensor. The weighing cylinder is connected to the weighing sensor through the fixed plate, and the fixed plate is located below the conveying unit and never directly contacts the conveying unit. When the product is conveyed to the preset position, the piston rod of the weighing cylinder rises and abuts against the lower surface of the product, separating the product from the upper surface of the conveying unit, so that the weighing sensor can weigh the product.

7. The re-inspection machine according to claim 1 or 2, characterized in that, The conveying section includes an inlet photoelectric sensor and a solenoid valve. The inlet photoelectric sensor is located at the inlet of the weighing section, and the solenoid valve is located at the outlet of the weighing section.

8. The re-inspection machine according to claim 2, characterized in that, The rejection unit includes a rotary cylinder, a second connecting plate, a transmission device, a rotating disk, and a rotating shaft. The upper end of the rotating shaft is fixedly connected to the conveying unit via the second connecting plate, and the lower end of the rotating shaft is fixedly connected to the rotating disk via the transmission device. One end of the rotary cylinder is fixed, and the other end is connected to the rotating disk. It can extend in response to a signal sent by the weighing unit indicating that the product weight does not match the expectation, thereby driving the rotating disk to rotate. The transmission device transmits the rotation of the rotating disk to the rotating shaft, which in turn drives the conveying unit to rotate from the first path to the second path.

9. The re-inspection machine according to claim 2, characterized in that, The angle between the first path and the second path in the horizontal direction is 90°.

10. The re-inspection machine according to claim 6, characterized in that, A support block is installed at the end of the piston rod of the weighing cylinder, and the upper surface area of ​​the support block in the horizontal direction is larger than the upper surface area of ​​the end of the piston rod.

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