Multifunctional remover and metal detector comprising same

Abstract

The utility model provides a multifunctional rejector and a metal detector comprising the same, the multifunctional rejector comprises a rack and an electric control box, and the electric control box is arranged on the side part of the rack; the pull-down removing mechanism is mounted at the top of the rack; the pull-down power source assembly is installed on the side portion of the rack, connected with the pull-down removing mechanism and used for driving the pull-down removing mechanism to turn up and down. The push plate removing mechanism is installed on the side face of the upper portion of the rack and located above the pull-down removing mechanism. The pull-down removing mechanism is connected with the electric control box, and the push plate removing mechanism and the pull-down removing mechanism are controlled to be started and stopped through the electric control box. The pull-down rejecting device combines pull-down rejecting and push plate rejecting, is arranged at the back of a production line of a metal detector or a dynamic checkweigher, and can adapt to dry or frozen and humid environments and the like. Pull-down removal solves the problem of removal of bagged thin products, and push plate removal solves the problem of removal of bagged thick products or boxed products.

Description

Technical Field

[0001] This utility model relates to the field of product testing technology, and in particular to a multifunctional rejector and a metal detector including the same. Background Technology

[0002] In the field of product testing technology, metal detectors and checkweighers are widely used in the food, pharmaceutical, and chemical industries. They are used to check whether metal foreign objects are mixed into products and to weigh products, so as to ensure product safety and quality.

[0003] When a product is defective, a rejector is often needed to automatically remove the product from the production line to ensure that defective products are not mixed with finished products. This reduces the time and cost required for manual intervention and inspection, while improving the speed and efficiency of the production line.

[0004] For the removal of defective products, the current rejectors mainly include: air-blowing rejectors, flip-plate rejectors, swing-bar rejectors, telescopic rejectors, push-plate rejectors, etc.

[0005] However, the application environment of rejectors is complex and diverse, ranging from dry to refrigerated and humid conditions. The direction of product rejection can vary depending on the production line layout, and the rejected products also exhibit small batches and diversity, including thin-bagged products, thicker-bagged products, and boxed products. In harsher environments, such as refrigerated and humid production lines, the ambient temperature is often low and the air humidity is high. Condensation on the product surface cannot be removed in time, easily causing high resistance on the rejector conveyor, thus hindering the normal transport and rejection of defective products.

[0006] Furthermore, for products with standard bag thicknesses, commonly used push-plate rejectors are prone to insufficient cylinder rod rigidity when rejecting heavier products or products with a long rejection stroke. This can lead to the push plate wobbling and tilting during the rejection process. In such cases, prolonged rejection can easily cause cylinder leakage and damage, and it can also easily scrape the conveyor table, resulting in unstable product rejection or even failure to reject products.

[0007] Therefore, a single rejector cannot meet the versatility requirements in the different environments described above, necessitating the deployment of different rejectors on the production line. This situation, on the one hand, increases procurement costs, and on the other hand, frequent line changes reduce production efficiency.

[0008] In view of this, the inventors of this application have proposed a multi-functional rejection device for dynamic product weighing or metal foreign object detection, which can meet the needs of automated rejection of defective products in various environments. Utility Model Content

[0009] The technical problem to be solved by this utility model is to overcome the shortcomings of existing rejectors, such as difficulty in meeting the requirements of versatility, high cost and low production efficiency, and to provide a multifunctional rejector and a metal detection machine including the rejector.

[0010] The present invention solves the above-mentioned technical problems through the following technical solution:

[0011] A multi-functional rejector, characterized in that the multi-functional rejector includes:

[0012] A frame and an electrical control box, wherein the electrical control box is mounted on the side of the frame;

[0013] A pull-down rejection mechanism is mounted on top of the frame;

[0014] A pull-down power source assembly is installed on the side of the frame and connected to the pull-down rejection mechanism to drive the pull-down rejection mechanism to flip up and down.

[0015] A push plate rejection mechanism is installed on the upper side of the frame, above the pull-down rejection mechanism;

[0016] The pull-down rejection mechanism and the push-plate rejection mechanism are respectively connected to the electrical control box, and the start and stop of the push-plate rejection mechanism and the pull-down rejection mechanism are controlled by the electrical control box.

[0017] According to one embodiment of the present invention, the pull-down rejection mechanism includes a pull-down platform, one end of which is connected to the top of the frame, and the pull-down power source assembly is installed between the frame and the bottom of the pull-down platform to support the pull-down platform.

[0018] According to one embodiment of the present invention, the pull-down table includes a driven roller, a driving roller, a conveyor belt, and a side plate. The driving roller and the driven roller are connected through the side plate and installed on both sides of the pull-down table. The driving roller drives the driven roller and the conveyor belt to move.

[0019] According to one embodiment of the present invention, the pull-down platform further includes a belt support plate and a support beam. The belt support plate is installed on the side plate and arranged between the conveyor belts. The support beam connects the two side plates and the belt support plate.

[0020] According to one embodiment of the present invention, the pull-down platform further includes a left anti-deviation plate and a right anti-deviation plate, the left anti-deviation plate and the right anti-deviation plate are respectively installed on the inner side of the two side plates, and both the left anti-deviation plate and the right anti-deviation plate are provided with an inclined surface biased towards the inner side of the side plate.

[0021] According to one embodiment of the present invention, the pusher plate rejection mechanism includes:

[0022] Mounting base, the mounting base being fixed to the frame;

[0023] A drive assembly, the drive assembly being mounted on top of the mounting base;

[0024] A pusher assembly, the pusher assembly being mounted at the end of the drive assembly;

[0025] The protective plate is connected to the mounting base via a protective support plate;

[0026] A push plate rejection solenoid valve is used to control the drive assembly and is connected to the push plate assembly.

[0027] According to one embodiment of the present invention, the drive assembly includes a cylinder mounting base, a cylinder, and at least one set of guide rod assemblies. The guide rod assemblies are mounted on the cylinder mounting base, and one end of the cylinder and one end of the guide rod assembly are both connected to the push plate assembly. The reciprocating motion of the cylinder rod drives the guide rod assembly to push the push plate assembly to reciprocate.

[0028] According to one embodiment of the present invention, the guide rod assembly includes a guide rod and a guide rod tube. The cylinder mounting base is provided with a plurality of support plates and / or bushing mounting plates. The guide rod tube is fixed on the support plate, and the end of the guide rod tube is fixed on the bushing mounting plate. The guide rod passes through the guide rod tube, and the end of the guide rod is connected to the push plate assembly.

[0029] According to one embodiment of the present invention, the guide rod assembly includes a guide rod and a guide rod mounting base. The guide rod mounting base is fixed on the fixing plate, the guide rod passes through the guide rod mounting base, and the end of the guide rod is connected to the push plate assembly.

[0030] This utility model provides a metal detection machine, characterized in that the metal detection machine includes the multifunctional rejector described above.

[0031] The positive and progressive effects of this utility model are as follows:

[0032] This utility model relates to a multifunctional rejector and a metal detector including the same, which combines pull-down rejecting and push-plate rejecting. It can be placed in the downstream of the production line of a metal detector or dynamic checkweigher and can adapt to dry or freezing and humid environments.

[0033] Among them, pull-down rejection solves the problem of rejecting thin bagged products, while push-plate rejection solves the problem of rejecting thick bagged or boxed products. At the same time, push-plate rejection can also solve the problems of push-plate skew and unstable rejection. Attached Figure Description

[0034] The above and other features, properties and advantages of this utility model will become more apparent from the following description taken in conjunction with the accompanying drawings and embodiments, in which the same reference numerals always denote the same features, wherein:

[0035] Figure 1 This is a schematic diagram of the structure of the multifunctional rejection device of this utility model. Figure 1 .

[0036] Figure 2 This is a schematic diagram of the structure of the multifunctional rejection device of this utility model. Figure 2 .

[0037] Figure 3 This is a schematic diagram of the structure of the pull-down platform in the multifunctional rejector of this utility model.

[0038] Figure 4 This is a schematic diagram of the removal action of the pull-down table in the multifunctional rejection device of this utility model.

[0039] Figure 5 This is a schematic diagram of the push plate rejection mechanism in the multifunctional rejection device of this utility model.

[0040] Figure 6 This is a schematic diagram of the drive assembly and push assembly of the push plate rejection mechanism in the multifunctional rejection device of this utility model. Figure 1 .

[0041] Figure 7 This is a schematic diagram of the drive assembly and push assembly of the push plate rejection mechanism in the multifunctional rejection device of this utility model. Figure 2 .

[0042] Figure 8 This is a schematic diagram of the cylinder mounting base in the multifunctional rejector of this utility model. Figure 1 .

[0043] Figure 9 This is a schematic diagram of the cylinder mounting base in the multifunctional rejector of this utility model. Figure 2 .

[0044] Figure 10 This is a front view of the cylinder mounting base in the multifunctional rejector of this utility model.

[0045] Figure 11 This is a schematic diagram of the cylinder rod end connection in the multifunctional rejector of this utility model.

[0046] Figure 12This is a schematic diagram showing the installation between the guide rod and the guide rod tube in the multifunctional rejector of this utility model.

[0047] Figure 13 This is a schematic diagram of the installation of the cylinder rod in the multifunctional rejector of this utility model.

[0048] Figure 14 In another embodiment of the multifunctional rejector of this utility model, the push plate rejector is three-dimensional. Figure 1 .

[0049] Figure 15 In another embodiment of the multifunctional rejector of this utility model, the push plate rejector is three-dimensional. Figure 2 .

[0050] Figure 16 This is a perspective view of the guide rod mounting base in another embodiment of the multifunctional rejector of this utility model.

[0051] Figure 17 This is a schematic diagram of the guide rod installation in another embodiment of the multifunctional rejector of this utility model.

[0052] Figure 18 In another embodiment of the multifunctional rejector of this utility model, the push plate rejector is three-dimensional. Figure 1 .

[0053] Figure 19 In another embodiment of the multifunctional rejector of this utility model, the push plate rejector is three-dimensional. Figure 2 .

[0054] Figure 20 This is a perspective view of the guide rod mounting base in another embodiment of the multifunctional rejector of this utility model.

[0055] Figure 21 This is a schematic diagram of the guide rod installation in another embodiment of the multifunctional rejector of this utility model. Detailed Implementation

[0056] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0057] Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Preferred embodiments of the present invention will now be described in detail, examples of which are shown in the drawings. Wherever possible, the same reference numerals will be used in all the drawings to denote the same or similar parts.

[0058] Furthermore, although the terminology used in this invention is selected from commonly known and used terms, some terms mentioned in this specification may have been selected by the applicant in his or her judgment, and their detailed meanings are explained in the relevant sections of the description herein.

[0059] Furthermore, it is required that this utility model be understood not only through the actual terminology used, but also through the meaning implied by each term.

[0060] Example 1:

[0061] like Figure 1 and Figure 2 As shown, this utility model discloses a metal detection machine, which includes a multi-functional rejector. The multi-functional rejector includes: a frame 100, an electrical control box 200, a pull-down rejecting mechanism 300, a pull-down power source assembly 400, and a push-plate rejecting mechanism 500. The electrical control box 200 is mounted on the side of the frame 100 via an electrical control box mounting plate 210. The pull-down rejecting mechanism 300 is mounted on the top of the frame 100, and the pull-down power source assembly 400 is mounted on the side of the frame 100 and connected to the pull-down rejecting mechanism 300, used to drive the pull-down rejecting mechanism 300 to tilt up and down. The push-plate rejecting mechanism 500 is mounted on the upper side of the frame 100, located above the pull-down rejecting mechanism 300. The pull-down rejecting mechanism 300 and the push-plate rejecting mechanism 500 are respectively connected to the electrical control box 200, which controls the start and stop of the push-plate rejecting mechanism 500 and the pull-down rejecting mechanism 300.

[0062] Here, the pull-down power source assembly 400 can preferably be a pull-down cylinder assembly. Of course, other power source structures are also possible. This is just an example and all are within the protection scope of this application.

[0063] The frame 100 has a frame structure and is mounted on the ground using multiple feet 110 (e.g., four feet). A connecting plate is located at the top of the frame 100, and a bearing seat 600 is bolted to the connecting plate and connected to the pull-down rejection mechanism 300. Simultaneously, a pneumatic component 700 is connected to the connecting plate via threaded holes, and the electrical control box mounting plate 210 and the push plate rejection device 500 are connected to the connecting plate via welded studs.

[0064] In addition, the frame 100 is also equipped with casters 130 for easy movement and convenient use of the rejector when changing production lines. The electrical control box 200 is provided with welded studs 220 and threaded holes on one side and the opposite side, so that the positions of the electrical control box 200, the electrical control box mounting plate 210 and the push plate rejector 500 can be reasonably arranged according to the rejection direction of defective products on the production line.

[0065] The control box mounting plate 210 is bolted to the control box 200. The control box 200 independently controls the start, stop, and emergency stop of the pull-down table 310 in the pull-down rejection mechanism 300. The control box 200 is equipped with a power switch 230, a start / stop switch 240, and a speed control knob 250. The speed control knob 250 is installed on the outside of the control box 200, which facilitates the rotation speed adjustment of the pull-down table 310 according to the production line's throughput requirements, making it simple and convenient.

[0066] like Figure 3 and Figure 4 As shown, the pull-down rejection mechanism 300 includes a pull-down table 310, one end of which is connected to a bearing housing 600. A pull-down power source assembly 400 is installed between the frame 100 and the bottom of the pull-down table 310 to support the pull-down table 310. Alternatively, two pull-down power source assemblies 400 can be used, symmetrically arranged on both sides of the frame 100, or one can be used, located in the middle of the frame along the product conveying direction, also supporting the pull-down table 310.

[0067] In addition, the pull-down rejection mechanism 300 also includes a pull-down rejection solenoid valve 320. The pull-down rejection solenoid valve 320 is mounted on the frame 100 and connected to and controls the pull-down power source assembly 400 through the pneumatic circuit of the pneumatic component 700.

[0068] The pull-down platform 310 includes a driven roller 311, a driving roller 312, a conveyor belt 313, a side plate 314, a belt support plate 315, a support beam 316, a left anti-deviation plate 317, a right anti-deviation plate 318, and a synchronous belt protective cover 319. The driving roller 312 and the driven roller 311 are connected by the side plate 314 and installed on both sides of the pull-down platform 310. Retaining ring grooves can be provided at the two shaft ends of the driving roller 312 and the driven roller 311, and retaining rings can be installed to prevent deviation caused by changes in the surface tension of the conveyor belt. When the pneumatic component 700 is ventilated, the bearing housing 600 and the pull-down power source assembly 400 jointly support the pull-down platform 310.

[0069] The pull-down platform 310 is connected to the bearing housing 600 via the driven roller 311. The driving roller 312 drives the driven roller 311 and the conveyor belt 313 to move. The belt support plate 315 is mounted on the side plate 314 and arranged between the conveyor belts 313. The support beam 316 connects the two side plates 314 and the belt support plate 315. The left anti-deviation plate 317 and the right anti-deviation plate 318 are respectively installed on the inner side of the two side plates 314, and both the left anti-deviation plate 317 and the right anti-deviation plate 318 are provided with inclined surfaces that deviate towards the inner side of the side plate 314.

[0070] In this embodiment, preferably, the support beam 316 can be bolted to the side plates 314 and the belt support plate 315 to ensure the strength and rigidity of the pull-down platform 310. The synchronous belt protective cover 319 is installed at the drive roller 312, on the side close to the speed regulating motor 800, to prevent damage to the synchronous belt 10 from foreign objects or human contact.

[0071] The inner side of the side plate 314 is equipped with a left anti-deviation plate 317 and a right anti-deviation plate 318. Both the left anti-deviation plate 317 and the right anti-deviation plate 318 are provided with inclined surfaces and are biased towards the inner side of the side plate 314 to prevent belt tension changes caused by condensation on the product surface, which could lead to the conveyor belt 313 running off-track.

[0072] Synchronous belt 10 connects pull-down table 310 to speed-regulating motor 800. Speed-regulating motor 800 is mounted on the lower part of pull-down table 310 and fixed to the mounting plate of frame 100. The rotation of speed-regulating motor 800 drives the conveyor belt 313 of pull-down table 310 to move, thereby transporting products.

[0073] Preferably, the belt tray 315 is provided with a plurality of parallel elongated holes 900, the size of which can preferably be 24mm x 4mm, or can be set to a smaller size. Furthermore, the elongated holes 900 are arranged along the conveying direction in the longitudinal direction, which facilitates the drainage of condensate from the surface of the frozen product.

[0074] The oblong hole 900 in this embodiment reduces the friction between the conveyor belt 313 and the belt support plate 315. This prevents insufficient torque in the speed-regulating motor 800 (used to drive the conveyor belt 313) when the conveyed product is heavy. Furthermore, the smaller oblong hole 900 reduces the pressure exerted by the conveyed product on the conveyor belt 313 at the oblong hole 900, thus preventing wear and even damage to the conveyor belt 313.

[0075] In addition, the side plate 314 has a groove at the contact point with the belt support plate 315 to ensure that the gap between the conveyor belt 313 and the belt support plate 315 is within the range of 0.5-1.5mm, thereby increasing the distance between the belt support plate 315 and the conveyor belt 313. This also reduces the friction between the conveyor belt 313 and the belt support plate 315 caused by condensation. A gap that is too small will not achieve the effect of reducing friction, while a gap that is too large will increase the instability of product conveying.

[0076] like Figure 5As shown, the pusher plate rejection mechanism 500 includes: a mounting base 510, a drive assembly 520, a pusher plate assembly 530, a protective plate 540, a pusher plate rejection solenoid valve 550, and a height adjustment plate 560. The mounting base 510 is fixed on the frame 100. The drive assembly 520 is mounted on the top of the mounting base 510, and the pusher plate assembly 530 is mounted on the end of the drive assembly 520. The protective plate 540 is connected to the mounting base 510 via a protective support plate 570. The pusher plate rejection solenoid valve 550 is used to control the drive assembly and can be optionally fixed on the mounting base 510 and connected to the pusher plate assembly 530.

[0077] A height adjustment plate 560 is mounted on top of the mounting base 510 (e.g., fixed by bolts), and is preferably a U-shaped plate with an elongated hole in the height direction for adjusting the height between the pusher assembly 530 and the conveyor table surface, preventing the pusher assembly 530 from scraping against the conveyor table surface during operation. A drive assembly 520 is mounted on the height adjustment plate 560, and a protective plate 540 is connected to the height adjustment plate 560 via a protective support plate 570.

[0078] like Figures 6 to 13 As shown, the drive assembly 520 preferably includes a cylinder mounting base 521, a cylinder 522, and at least one set of guide rod assemblies. The guide rod assemblies are mounted on the cylinder mounting base 521, and one end of the cylinder 522 and one end of the guide rod assembly are both connected to the push plate assembly 530. The reciprocating motion of the cylinder rod of the cylinder 522 drives the guide rod assembly to push the push plate assembly 530 to reciprocate. The cylinder 522 and the guide rod assembly are arranged vertically in the height direction. The push plate assembly 530 preferably includes a push plate 531 and a push plate fixing plate 532, and one end of the cylinder 522 and one end of the guide rod assembly are connected to the push plate 531 through the push plate fixing plate 532.

[0079] In this embodiment, preferably, the guide rod assembly includes a guide rod 524 and a guide rod tube 525, and a plurality of support plates 5211 and / or bushing mounting plates 5212 are provided on the cylinder mounting base 521 (e.g., ...). Figure 8 and Figure 9 As shown, the guide tube 525 is fixed on the support plate 5211, the end of the guide tube 525 is fixed on the bushing mounting plate 5212, the guide rod 524 passes through the guide tube 525, and the end of the guide rod 524 is connected to the push plate assembly 530.

[0080] like Figure 10As shown, the cylinder mounting base 521 is also provided with a vertical plate 5213, reinforcing ribs 5214, and an elongated hole 5215 for the cylinder mounting base. The vertical plate 5213 is provided with a first bushing mounting hole 5218 and a cylinder body mounting hole 5217. The bushing mounting vertical plate 5212 is provided with a second bushing mounting hole 5216, which is coaxial with the first bushing mounting hole 5218 on the vertical plate 5213. Bushings 20 are respectively installed inside the first bushing mounting hole 5218 of the vertical plate 5213 and the second bushing mounting hole 5216 of the bushing mounting vertical plate 5212. Reinforcing ribs 5214 are arranged on both sides of the vertical plate 5213 to enhance the rigidity of the cylinder mounting base 521.

[0081] In this embodiment, a support plate 5211 with two guide rod tubes is provided on the cylinder mounting base 521, and is integrally connected with the guide rod tube 525. The guide rod tube 525 has a guide rod tube cavity 526 inside, which is coaxial with the first bushing mounting hole 5218 and the second bushing mounting hole 5216 of the bushing mounting plate 5212, and can be used for the reciprocating extension and retraction movement of the guide rod 524 between the three holes. The elongated hole 5215 of the cylinder mounting base is arranged along the extension and retraction direction of the cylinder 522, and can be used to adjust the horizontal distance between the push plate 531 and the conveying table surface.

[0082] More specifically, the guide rod 524 passes sequentially through the vertical plate 5212 and the bushing 20 inside the bushing mounting plate 5212, as well as the guide rod cavity 526. A threaded hole is provided at one end of the push plate 531, and it is connected to the push plate fixing plate 532 by bolts. The cylinder body 30 is connected to the vertical plate 5212 by bolts (e.g., ...). Figure 13 As shown, the cylinder rod 40 has an external thread at one end of the push plate 531, which is connected to the internal thread of the push plate fixing plate 532.

[0083] The guide rod 524 and the cylinder rod 40 are arranged vertically in the height direction and are connected to the push plate fixing plate 532. The push plate fixing plate 532 is provided with multiple internal threads and is connected to the push plate 531 by bolts. When the cylinder rod 40 reciprocates, it can drive the guide rod 524 to move together, jointly pushing the push plate 531 to reciprocate, which increases the overall rigidity and rejection stability.

[0084] According to the above structural description, when the multi-functional rejector is in use, the pneumatic component 700 is connected to the pull-down rejecting solenoid valve 320 via an air passage, and is also connected to the push-plate rejecting solenoid valve 550. The pull-down rejecting solenoid valve 320 is fixed on the frame 100 and is connected to and controls the pull-down power source assembly 400 via an air passage. In this embodiment, there are two pull-down power source assemblies 400, which are symmetrically arranged on both sides of the pull-down table 310 and connect the pull-down table 310 to the frame 100. The operation of the pull-down power source assembly 400 can realize the reciprocating downward rotation of the pull-down table 310 and the rejection of defective products in bagged thin products.

[0085] Meanwhile, the push plate rejection solenoid valve 550 is connected to and controls the cylinder 522 via an air circuit, and is bolted to the solenoid valve mounting seat 527. The solenoid valve mounting seat 527 is bolted to the cylinder mounting seat 521. The reciprocating motion of the cylinder 522 can drive the push plate 531 to move in a direction perpendicular to the product conveying direction of the pull-down table 310, thereby further realizing the rejection of bagged thick products or boxed products.

[0086] In addition, when used on-site, the multi-functional rejector can be placed in the downstream of the dynamic checkweigher or metal detector production line, and the signal lines of the pull-down rejecting solenoid valve 320 and the push plate rejecting solenoid valve 550 can be connected to the electrical control box of the dynamic checkweigher or metal detector at the front end.

[0087] When the customer sets the product to be a thin, bagged product, if a defective product is found, the pull-down rejection solenoid valve 320 will activate, while the push plate rejection solenoid valve 550 will not activate. This means the pull-down table 310 will rotate downwards. The push plate 531 will not activate, thus rejecting the defective product.

[0088] When the customer sets the product to be a bagged or boxed product, if a defective product is found, the pull-down rejection solenoid valve 320 will not activate, while the push plate rejection solenoid valve 550 will activate, meaning the pull-down table 310 will not activate. The push plate 531 will move forward to remove the defective product.

[0089] Furthermore, based on the customer's production line layout requirements, the positions of the electrical control box 200, the electrical control box mounting plate 210, and the pusher plate rejection mechanism 500 can be interchanged to change the pusher plate rejection direction. The entire equipment can also be moved using the casters 130 on the frame 100 to enable line changeovers. The speed control knob 250 on the equipment can also quickly adapt to the packing volume requirements of the upstream production line, making operation simple and convenient.

[0090] Example 2:

[0091] like Figures 14 to 17 As shown, the structure of this embodiment is basically the same as that of Embodiment 1, except that: in this embodiment, the drive assembly 520 of the push plate rejection mechanism 500 includes a set of guide rod assemblies, and the guide rod assemblies and the cylinder 522 are arranged side by side on the fixed plate 529 in the horizontal direction. The guide rod assembly includes a guide rod 524 and a guide rod mounting seat 528. The guide rod mounting seat 528 is fixed on the fixed plate 529, and the guide rod 524 passes through the guide rod mounting seat 528. The end of the guide rod 524 is connected to the push plate 531 through the push plate fixing plate 532.

[0092] Cylinder 522 is fixed on cylinder mounting base 40, which is bolted to both ends of fixing plate 529. Guide rod mounting base 528 is preferably a rectangular cylindrical structure with a through hole and internal threads at the bottom, and is bolted to fixing plate 529, arranged on the same horizontal plane as cylinder 522. Bushings 50 are fixed to both ends of guide rod mounting base 528, and guide rod 524 passes through the bushings 50 at both ends in sequence.

[0093] The end of cylinder 522 near push plate 531 is connected to push plate fixing plate 532 via internal and external threads. The end of guide rod 524 near push plate 531 has an internal threaded hole and is connected to push plate fixing plate 532 via bolts. Here, push plate 531 can be connected to push plate fixing plate 532 via bolts. The reciprocating movement of cylinder 522 drives guide rod 524 to move together, jointly pushing push plate 531 to reciprocate, increasing overall rigidity and rejection stability.

[0094] Example 3:

[0095] like Figures 18 to 21 As shown, the structure of this embodiment is basically the same as that of Embodiment 1, except that: in this embodiment, the drive assembly 520 of the push plate rejection mechanism 500 includes two sets of guide rod assemblies, which are respectively arranged on both sides of the cylinder 522. Each set of guide rod assemblies includes a guide rod 524 and a guide rod mounting seat 528. The guide rod mounting seat 528 is fixed on the fixing plate 529, and the guide rod 524 passes through the guide rod mounting seat 528. The end of the guide rod 524 is connected to the push plate 531 through the push plate fixing plate 532.

[0096] Cylinder 522 is fixed to cylinder mounting base 40, which is bolted to both ends of fixing plate 529. Two sets of guide rod mounting bases 528 are preferably rectangular cylindrical structures with through holes and internal threads at the bottom, and are bolted to fixing plate 529. The two sets of guide rod mounting bases 528 are arranged on both sides of cylinder 522 and on the same horizontal plane as cylinder 522. Bushings 50 are fixed to both ends of the guide rod mounting base 528, and guide rods 524 pass through the bushings 50 at both ends in sequence.

[0097] One end of the cylinder 522 near the push plate 531 is connected to the push plate fixing plate 532 via internal and external threads. The guide rod 524 near the push plate 531 has an internal threaded hole and is connected to the push plate fixing plate 532 via bolts. The push plate 531 is connected to the push plate fixing plate 532 via bolts. The reciprocating movement of the cylinder 522 drives the two sets of guide rods 524 to move together, jointly pushing the push plate 531 in reciprocating motion. This can accommodate adjustments in application scenarios where heavier products are being rejected or the rejection stroke is longer. Compared with Embodiments 1 and 2 above, this embodiment has better overall rigidity and rejection stability.

[0098] As described in Embodiments 1, 2, and 3 above, this multifunctional rejector can be applied to various application scenarios, such as the frozen food industry:

[0099] After frozen foods are inspected by metal detectors or dynamic checkweighers, if metal foreign objects, underweight, or overweight products are found, defective products need to be automatically removed by rejectors on the subsequent production line. Due to the diverse range of products produced, the direction of defective product rejection is affected by the spatial layout of the production line, and its position can be either forward or backward. If a single rejector, such as a pusher rejector, is used in this complex environment, problems such as package clamping and incomplete rejection can easily occur. Furthermore, heavier products or poor cylinder rod rigidity can cause the pusher to deviate, leading to unstable product rejection and difficulty in meeting the needs of rejecting multiple products.

[0100] In the technical solution of this application, the multi-functional rejector combines pull-down rejecting and push-plate rejecting, and is arranged after the metal detection machine or dynamic checkweighing production line. It can adapt to dry or freezing and humid environments. Pull-down rejecting solves the rejection of thin bagged products, while push-plate rejecting solves the rejection of thick bagged products or boxed products. At the same time, push-plate rejecting can also solve the problems of push-plate skew and unstable rejection.

[0101] As described above, the multi-functional rejector has the following advantages:

[0102] First, by combining pull-down rejection and push-plate rejection and setting up a universal installation interface, the problem that a single rejector in the existing technology cannot meet diverse rejection needs is solved.

[0103] Second, the guide rod and cylinder rod can be arranged in parallel horizontally or vertically, both of which can improve the overall rigidity and rejection stability.

[0104] Third, the addition of drainage holes to the belt support plate and the increased distance between the belt support plate and the conveyor belt solves the problems of insufficient frictional resistance of the conveyor belt and insufficient power of the large motor in freezing and humid environments in the existing technology.

[0105] The pull-down rejection and push-plate rejection are combined and a universal installation interface is provided. In the traditional cylinder rod and push-plate fixing plate connection structure, a guide rod is added to connect to the push-plate fixing plate together with the cylinder rod.

[0106] For those skilled in the art, the above disclosure is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0107] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic related to at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0108] Similarly, it should be noted that, in order to simplify the description of the embodiments disclosed in this application and thus aid in the understanding of one or more embodiments of the invention, the foregoing description of the embodiments of this application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of this application requires more features than those mentioned in the claims. In fact, the embodiments have fewer features than all the features of a single embodiment disclosed above. Some embodiments use numbers describing the number of components or attributes; it should be understood that such numbers used in the description of embodiments are modified in some examples by the terms "approximately," "about," or "generally."

[0109] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A multifunctional rejector, characterized in that, The multi-functional rejector includes: A frame and an electrical control box, wherein the electrical control box is mounted on the side of the frame; A pull-down rejection mechanism is mounted on top of the frame; A pull-down power source assembly is installed on the side of the frame and connected to the pull-down rejection mechanism to drive the pull-down rejection mechanism to flip up and down. A push plate rejection mechanism is installed on the upper side of the frame, above the pull-down rejection mechanism; The pull-down rejection mechanism and the push-plate rejection mechanism are respectively connected to the electrical control box, and the start and stop of the push-plate rejection mechanism and the pull-down rejection mechanism are controlled by the electrical control box.

2. The multifunctional rejector as described in claim 1, characterized in that, The pull-down rejection mechanism includes a pull-down platform, one end of which is connected to the top of the frame. The pull-down power source assembly is installed between the frame and the bottom of the pull-down platform to support the pull-down platform.

3. The multifunctional rejector as described in claim 1, characterized in that, The pull-down platform includes a driven roller, a driving roller, a conveyor belt, and a side plate. The driving roller and the driven roller are connected by the side plate and installed on both sides of the pull-down platform. The driving roller drives the driven roller and the conveyor belt to move.

4. The multifunctional rejector as described in claim 3, characterized in that, The pull-down platform also includes a belt support plate and a support beam. The belt support plate is installed on the side plate and arranged between the conveyor belts. The support beam connects the two side plates and the belt support plate.

5. The multifunctional rejector as described in claim 3, characterized in that, The pull-down platform also includes a left anti-deviation plate and a right anti-deviation plate. The left anti-deviation plate and the right anti-deviation plate are respectively installed on the inner side of the two side plates, and both the left anti-deviation plate and the right anti-deviation plate are provided with an inclined surface biased towards the inner side of the side plate.

6. The multifunctional rejector as described in claim 1, characterized in that, The pusher plate rejection mechanism includes: Mounting base, the mounting base being fixed to the frame; A drive assembly, the drive assembly being mounted on top of the mounting base; A pusher assembly, the pusher assembly being mounted at the end of the drive assembly; The protective plate is connected to the mounting base via a protective support plate; A push plate rejection solenoid valve is used to control the drive assembly and is connected to the push plate assembly.

7. The multifunctional rejector as described in claim 6, characterized in that, The drive assembly includes a cylinder mounting base, a cylinder, and at least one set of guide rod assemblies. The guide rod assemblies are mounted on the cylinder mounting base, and one end of the cylinder and one end of the guide rod assembly are both connected to the push plate assembly. The reciprocating motion of the cylinder rod drives the guide rod assembly to push the push plate assembly to reciprocate.

8. The multifunctional rejector as described in claim 7, characterized in that, The guide rod assembly includes a guide rod and a guide rod tube. The cylinder mounting base is provided with multiple support plates and / or bushing mounting plates. The guide rod tube is fixed on the support plate, and the end of the guide rod tube is fixed on the bushing mounting plate. The guide rod passes through the guide rod tube, and the end of the guide rod is connected to the push plate assembly.

9. The multifunctional rejector as described in claim 7, characterized in that, The guide rod assembly includes a guide rod and a guide rod mounting base. The guide rod mounting base is fixed to the fixed plate, the guide rod passes through the guide rod mounting base, and the end of the guide rod is connected to the push plate assembly.

10. A metal detector, characterized in that, The metal detector includes the multifunctional rejector as described in any one of claims 1-9.

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