Push plate remover and metal detector comprising same

By installing protective plates on both sides of the push plate rejector and strengthening the connection structure, the problems of jamming and unstable operation of the independent push plate rejector are solved, thereby improving the stability of the production line and the detection efficiency.

CN224087385UActive Publication Date: 2026-04-07METTLER TOLEDO (CHANGZHOU) MEASUREMENT TECH CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-10
Publication Date
2026-04-07

AI Technical Summary

Technical Problem

Traditional independent pusher rejectors are prone to causing qualified products to get stuck when the volume of bulk products is large, resulting in unstable rejection action and potentially interfering with the normal operation of metal detectors.

Method used

Protective plates are installed on both sides of the push plate rejector, including a U-shaped protective plate, a left protective plate, a right protective plate, and an upper sealing plate. The connection strength is enhanced by reinforcing blocks and support columns to reduce shaking. Non-metallic materials are used to reduce weight.

Benefits of technology

It solves the product jamming problem, improves the stability of the rejector, reduces interference with the metal detector, and adapts to compact production line layouts.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a push plate rejector and a metal detector including the same, the push plate rejector comprises a push plate driving assembly, a push plate, a rejector mounting plate and a protective cover, the push plate driving assembly is mounted on the rejector mounting plate, the push plate is mounted at the end of the push plate driving assembly, the protective cover is mounted on the rejector mounting plate, and the push plate is mounted on the end of the push plate driving assembly. The push plate driving assembly pushes the push plate to move back and forth; the protective cover is connected with the two sides and the upper portion of the push plate and arranged outside the push plate driving assembly in a covering mode, and the push plate drives the protective cover to move together when moving. The protection plates are arranged on the two sides of the independent push plate rejector, so that the problem that conveyed products are easily clamped on the inner sides of the push plates and are mistakenly rejected during return stroke of the air cylinder is solved. Non-metal protection plates are arranged on the two sides of the push plate rejector, the overall weight and shaking of the rejector can be reduced, the metal influence area caused by movement of the rejector can be further reduced, and the compact-space production line layout is facilitated.
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Description

TECHNICAL FIELD

[0001] The utility model relates to product detection technical field, especially push plate ejector and including its metal detection machine. BACKGROUND

[0002] In the prior art of product detection technology, the push plate ejector is usually placed on a dynamic product detection balance or a metal detection machine to check whether the weight of the conveyed product is qualified or whether metal foreign matter is mixed in the product. When defective products appear, the ejector can automatically eject the defective products, thereby reducing the time of manual intervention and improving the production efficiency of the production line.

[0003] In addition, for production lines with product line-changing production needs, independent push plate ejectors are often used and can be moved to other production lines for use.

[0004] However, when the throughput of bulk products is large or bulk products are applied, the conventional independent push plate ejector often has qualified products stuck inside the push plate during the return stroke of the push plate, which are then brought out of the table, causing certain mis-ejection.

[0005] When the product is heavy or the cylinder stroke is long, the independent push plate ejector will shake due to the inertia impact caused by the cylinder pushing the product, thereby causing unstable ejection action and leading to ejection failure.

[0006] When the independent push plate ejector is arranged behind the metal detection machine, the metal detection head is often easily disturbed due to the limitation of the space size and the movement of the metal structural member on the ejector, and even causes the metal detection machine to fail to work normally.

[0007] Therefore, the present inventors have designed a push plate ejector and a metal detection machine including the same to overcome the above technical problems. SUMMARY

[0008] The utility model wants to solve the technical problem of the prior art that the independent push plate ejector has unstable ejection action and the product is easily stuck inside the push plate, and provides a push plate ejector and a metal detection machine including the same.

[0009] The utility model solves the above technical problems by the following technical scheme:

[0010] A push plate ejector, characterized in that the push plate ejector comprises a push plate driving assembly, a push plate, an ejector mounting plate, and a protective cover, the push plate driving assembly is mounted on the ejector mounting plate, the push plate is mounted at the end of the push plate driving assembly, and the push plate is driven by the push plate driving assembly to move back and forth;

[0011] The protective cover is connected with both sides and the upper part of the push plate, and is arranged outside the push plate driving assembly.

[0012] According to an embodiment of the utility model, the protective cover is a U-shaped protective plate, one end of the U-shaped protective plate is connected with the push plate.

[0013] According to an embodiment of the utility model, the protective cover comprises a left protective plate, a right protective plate and an upper sealing plate, the left protective plate and the right protective plate are arranged in parallel on both sides of the push plate, and the upper sealing plate is fixed between the upper part of the push plate, the upper part of the left protective plate and the upper part of the right protective plate.

[0014] According to an embodiment of the utility model, the lower part of the left protective plate is fixed at the connecting part with the lower part of the push plate through a bottom reinforcing block, and the bottom reinforcing block is attached to the inner wall surface of the left protective plate and the inner wall surface of the push plate.

[0015] The lower part of the right protective plate is fixed at the connecting part with the lower part of the push plate through a bottom reinforcing block, and the bottom reinforcing block is attached to the inner wall surface of the right protective plate and the inner wall surface of the push plate.

[0016] According to an embodiment of the utility model, the upper part of the push plate and the upper part of the left protective plate are fixed at the connecting part with the upper sealing plate through an upper reinforcing block, the upper reinforcing block is fixedly connected with the upper sealing plate, and is attached to the inner wall surface of the push plate and the inner wall surface of the left protective plate.

[0017] The upper part of the push plate and the upper part of the right protective plate are fixed at the connecting part with the upper sealing plate through an upper reinforcing block, the upper reinforcing block is fixedly connected with the upper sealing plate, and is attached to the inner wall surface of the push plate and the inner wall surface of the right protective plate.

[0018] According to an embodiment of the utility model, at least one middle reinforcing block is arranged on the left side and the right side of the upper sealing plate, and the middle reinforcing block is fixedly connected with the left protective plate and the right protective plate.

[0019] According to an embodiment of the utility model, a plurality of supporting columns are arranged between the inner wall surfaces of the left protective plate and the right protective plate.

[0020] According to an embodiment of the utility model, the push plate ejector further comprises a rack and a clamping block assembly, the clamping block assembly is installed on the side of the rack and is used for being connected with an external mechanism, and the ejector mounting plate is fixed on the upper end of the rack.

[0021] According to one embodiment of the utility model, the push plate ejector further includes an end protection cover fixed on the ejector mounting plate away from the end of the push plate.

[0022] The utility model further provides a metal detection machine, its characterized in be including the push plate ejector as described above.

[0023] The utility model has the positive progress effect that:

[0024] The utility model discloses push plate ejector and the metal detection machine including it, set up the protection plate at the both sides of independent push plate ejector, thereby solved the problem that the product is easy to be stuck in the inside of push plate when the air cylinder returns and is thus wrongly rejected.

[0025] In addition, the both sides of the push plate ejector are provided with non-metal protection plates, which can reduce the overall weight and shaking of the ejector, further reduce the metal influence area caused by the movement of the ejector, and facilitate the compact production line layout. BRIEF DESCRIPTION OF DRAWINGS

[0026] The above and other features, properties and advantages of the utility model will become more apparent through the following description in conjunction with the drawings and embodiments, wherein the same reference signs always represent the same features, and wherein:

[0027] Figure 1 It is the exploded view of the push plate ejector of the utility model.

[0028] Figure 2 It is the perspective of the push plate ejector of the utility model Figure 1 .

[0029] Figure 3 It is the perspective of the push plate ejector of the utility model Figure 2 .

[0030] Figure 4 It is the front view of the push plate ejector of the utility model.

[0031] Figure 5 It is the left view of the push plate ejector of the utility model.

[0032] Figure 6 It is Figure 4 The sectional view along A-A line.

[0033] Figure 7 It is Figure 4 The sectional view along B-B line.

[0034] Figure 8 It is Figure 5 The sectional view along C-C line.

[0035] Figure 9 For Figure 4 Fig. 2 is a sectional view taken along line D-D in Fig. 1.

[0036] Figure 10 Fig. 4 is a schematic diagram of the movement of the push plate ejector of the present application. DETAILED DESCRIPTION

[0037] In order to make the above objectives, characteristics and advantages of the present application more apparent, the following will describe the specific embodiments of the present application in detail with reference to the accompanying drawings.

[0038] Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

[0039] Further, although the terms used in the present application are selected from publicly-known terms, some of the terms mentioned in the specification of the present application can be selected by the applicant in his or her judgment, the detailed meanings of which are described in the relevant part of the description herein.

[0040] Further, the present application is to be understood not only in the sense of the actual terms used, but also in the sense of the meanings of each term implied in the present application.

[0041] As Figures 1 to 10 The present application discloses a metal detector, which comprises a push plate ejector. The push plate ejector comprises a push plate driving assembly, a push plate 10, an ejector mounting plate 20, a protective cover 30, a rack 40 and a clamping block assembly 50. The push plate driving assembly is mounted on the ejector mounting plate 20, the push plate 10 is mounted on the end of the push plate driving assembly, and the push plate 20 is moved back and forth by the push plate driving assembly. The protective cover 30 is connected with the two sides and the upper part of the push plate 10, and is arranged outside the push plate driving assembly. When the push plate 10 moves, the protective cover 30 moves together.

[0042] The clamping block assembly 50 is mounted on the side of the rack 40, and is used for connecting with external mechanisms. The ejector mounting plate 20 is fixed on the upper end of the rack 40. The clamping block assembly 50 comprises a clamping block mounting seat 51 and a plurality of clamping blocks 52. The clamping block mounting seat 51 is mounted on the side of the rack 40. A plurality of waist-shaped holes are arranged on the clamping block mounting seat 51, and the plurality of clamping blocks 52 (for example, U-shaped clamping blocks) are connected through connecting members (for example, bolts). In this way, the clamping block mounting seat 51 and the U-shaped clamping blocks 52 can jointly clamp the metal detector or the dynamic product weight checking scale, so as to prevent the ejector from shaking due to the impact caused by the movement of the push plate driving assembly.

[0043] In the embodiment, the push plate driving assembly comprises a plurality of guide rods 61, a plurality of guide seats 62 and a cylinder assembly 60. One end of the cylinder assembly 60 is connected with the push plate 10 through a push plate connecting piece 63. The cylinder assembly 60 is fixed on the ejector mounting plate 20 through connecting pieces (e.g. bolts), and the guide seats 62 are fixed on the ejector mounting plate 20 through connecting pieces (e.g. bolts) and are located on both sides of the cylinder assembly 60. The guide seats 62 are further provided with sliding shaft sleeves 64 on both sides thereof. The round rods of the guide rods 61 pass through the guide seats 62 and can move in the sliding shaft sleeves 64, and the other ends of the guide rods 61 are connected with the push plate connecting piece 63 and are connected with the push plate 10 through connecting pieces (e.g. bolts).

[0044] The bottom of the frame 40 is provided with a footing 41, and the top is provided with an ejector mounting seat 42. A plurality of waist-shaped holes can be arranged on the ejector mounting seat 42, and the ejector mounting plate 20 is connected through connecting pieces (e.g. bolts). In addition, a pneumatic component mounting seat 43 can also be mounted on the frame 40 (e.g. mounted through bolts), and the pneumatic component mounting seat 43 is fixed with a pneumatic component 44 for controlling the action of the cylinder assembly 60.

[0045] In the embodiment, the protective cover 30 can be preferably a U-shaped protective plate, one end of which is connected with the push plate 10. Alternatively, as shown in the drawings, the protective cover 30 (e.g. the U-shaped protective plate) can preferably comprise a left protective plate 31, a right protective plate 32 and an upper sealing plate 33. The left protective plate 31 and the right protective plate 32 are arranged in parallel on both sides of the push plate 10 through connecting pieces (e.g. bolts), so as to prevent the conveyed product from being mistakenly ejected out of the table top when the cylinder assembly 60 returns. Figure 1

[0046] In order to enhance the connection strength between the left protective plate 31, the right protective plate 32 and the push plate 10, a bottom reinforcing block 70 is arranged at the lower part of the left protective plate 31 and the lower part of the push plate 10 (e.g. the bottom reinforcing block 70 is fixed through bolts), and the bottom reinforcing block 70 is attached to the inner wall surface of the left protective plate 31 and the inner wall surface of the push plate 10. Similarly, a bottom reinforcing block 70 is arranged at the lower part of the right protective plate 32 and the lower part of the push plate 10 (e.g. the bottom reinforcing block 70 is fixed through bolts), and the bottom reinforcing block 70 is attached to the inner wall surface of the right protective plate 32 and the inner wall surface of the push plate 10.

[0047] ​The upper sealing plate 33 is fixed between the upper part of the push plate 10, the upper part of the left side guard plate 31 and the upper part of the right side guard plate 32. The upper reinforcing block 80 is added to fix (for example, the upper reinforcing block 80 is fixed by bolts) at the connection of the upper sealing plate 33, the upper part of the push plate 10 and the upper part of the left side guard plate 31, the upper reinforcing block 80 is fixedly connected with the upper sealing plate 33 and is in close contact with the inner wall surface of the push plate 10 and the inner wall surface of the left side guard plate 31. The upper reinforcing block 80 is added to fix at the connection of the upper sealing plate 33, the upper part of the push plate 10 and the upper part of the right side guard plate 32, the upper reinforcing block 80 is fixedly connected with the upper sealing plate 33 and is in close contact with the inner wall surface of the push plate 10 and the inner wall surface of the right side guard plate 32.

[0048] In the embodiment, the bottom reinforcing block 70 and the upper reinforcing block 80 are in close contact with the inner side (i.e., the inner wall surface) of the push plate 10 and are connected to the push plate 10 by connecting members (for example, bolts), so as to ensure the rigidity of the connection of the left side guard plate 31, the right side guard plate 32 and the push plate 10.

[0049] Further preferably, at least one middle reinforcing block 90 is installed on each side of the upper sealing plate 33, and the middle reinforcing block 90 is fixedly connected with the left side guard plate 31 and the right side guard plate 32, respectively. The plurality of middle reinforcing blocks 90 are fixed on the left side guard plate 31 and the right side guard plate 32 by connecting members (for example, bolts), and the plurality of upper reinforcing blocks 80 and the middle reinforcing blocks 90 are in the same plane, so as to provide a mounting surface for the upper sealing plate 33.

[0050] Further, a plurality of pads 100 are installed on the upper part of the upper reinforcing block 80 and the middle reinforcing block 90, and the upper sealing plate 33 is fixed on the upper part of the pad 100 by the gasket 110 and the top bolt 120. The upper sealing plate 33 can be preferably made of transparent material, and the movement of the cylinder assembly 60 inside the ejector can be observed through the upper sealing plate 33, so as to facilitate timely troubleshooting. Moreover, after the installation of the upper sealing plate 33, the upper plane thereof is coplanar with the upper planes of the push plate 10, the left side guard plate 31 and the right side guard plate 32.

[0051] In addition, a plurality of support columns 200 are arranged at intervals between the inner wall surfaces of the left side guard plate 31 and the right side guard plate 32. In the embodiment, the plurality of support columns 200 are arranged at intervals and are connected to the inner sides of the left side guard plate 31 and the right side guard plate 32 by connecting members (for example, bolts), so as to ensure the connection strength and rigidity of the left side guard plate 31 and the right side guard plate 32.

[0052] As Figure 10As shown, the push plate ejector further comprises an end protection cover 300 fixed on the ejector mounting plate 20 away from the end of the push plate 10. For example, the end protection cover 300 can be fixed on the end of the ejector mounting plate 20 by fasteners, and the gap between the end protection cover 300 and the push plate 10, the left side protection plate 31 and the right side protection plate 32 is kept at 3-5mm, preventing the cylinder assembly 60 from interfering with the end protection cover 300 after returning.

[0053] When the production line arranges the metal detection head, the guide rod 61, the push plate 10, the left side protection plate 31, the right side protection plate 32, the support column 200, the bottom reinforcing block 70, the end protection cover 17, the upper sealing plate 33, the upper reinforcing block 80, the middle reinforcing block 90, the cushion block 100, the gasket 110 and the top bolt 120 can all be preferably made of non-metal materials, which can also reduce the overall weight and shaking of the ejector, thereby further reducing the metal influence area caused by the movement of the ejector, and facilitating the compact layout of the production line.

[0054] According to the above structural description, the push plate ejector of the utility model has multiple application scenarios, and the following takes bulk meat sausage metal foreign matter detection and rejection as an example:

[0055] When the bulk product is found to have metal foreign matter after being detected by the metal detector, the rear ejector will reject the defective product. When the production line has a large throughput, qualified products will often be stuck inside the push plate during the return stroke of the push plate, and then be taken out of the table, causing certain false rejection.

[0056] Alternatively, when the product is heavy or the cylinder stroke is long, the independent push plate ejector will produce certain shaking due to the inertial impact caused by the cylinder pushing the product. This will most likely cause unstable rejection action and affect the detection function of the metal detection head, thereby causing rejection failure.

[0057] In addition, when the production line space size is limited, the metal detection head is often easily disturbed by the movement of the metal structural parts on the ejector, and even causes the metal detector to malfunction.

[0058] The push plate ejector of the utility model and the metal detector comprising the same have the following advantages:

[0059] I. The protective plates can be arranged on both sides of the independent push plate ejector, thereby solving the problem that the conveyed product is easily stuck inside the push plate during the return stroke of the cylinder, thereby being falsely rejected.

[0060] II. The non-metal protective plates arranged on both sides of the independent push plate ejector can reduce the overall weight and shaking of the ejector, thereby further reducing the metal influence area caused by the movement of the ejector, and facilitating the compact layout of the production line.

[0061] Three, on the independent puller frame, the connection plate connected to the main equipment is added, which can greatly reduce the shaking and instability caused by the movement impact of the puller.

[0062] Four, a transparent window is arranged on the top of the independent push plate puller, so that the movement of the internal cylinder of the puller can be observed, and the fault problem can be conveniently and timely checked.

[0063] In summary, the push plate puller and the metal detector comprising the same are provided with the protective plates on both sides of the independent push plate puller, so that the problem that the conveyed product is easily stuck in the inner side of the push plate during the return of the cylinder and is thus wrongly rejected is solved.

[0064] In addition, the non-metal protective plates are arranged on both sides of the push plate puller, so that the overall weight and shaking of the puller can be reduced, the metal influence area caused by the movement of the puller can be further reduced, and the compact production line layout is beneficial.

[0065] For those skilled in the art, the above disclosure of the application is only as an example, and does not constitute a limitation on the application. Although it is not explicitly stated here, those skilled in the art can make various modifications, improvements and corrections to the application. Such modifications, improvements and corrections are suggested in the application, so such modifications, improvements and corrections still belong to the spirit and scope of the exemplary embodiments of the application.

[0066] At the same time, specific words are used in the application to describe the embodiments of the application. As "one embodiment", "an embodiment" and / or "some embodiments" mean a certain feature, structure or characteristic related to at least one embodiment of the application. Therefore, it should be emphasized and noted that the "an embodiment" or "one embodiment" or "an alternative embodiment" mentioned in different places in the specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the application can be properly combined.

[0067] Similarly, it should be noted that, in order to simplify the description of the disclosure of the application and to help understand one or more embodiments of the application, sometimes multiple features are combined into one embodiment, figure or description thereof in the foregoing description of the embodiments of the application. However, this disclosure method does not mean that the features required by the application are more than the features mentioned in the claims. In fact, the features of the embodiment are less than all the features of the disclosed single embodiment. Some embodiments use numbers to describe components, attributes and quantities, and it should be understood that such numbers used in the description of the embodiments are modified by the modifier "about", "approximately" or "generally" in some examples.

[0068] Although the specific embodiments of the present application are described above, those skilled in the art should understand that these are only illustrative, the protection scope of the present application 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 the present application, but these changes and modifications all fall within the protection scope of the present application.

Claims

1. A push-plate rejector, characterized in that, The push plate rejector includes a push plate drive assembly, a push plate, a rejector mounting plate, and a protective cover. The push plate drive assembly is mounted on the rejector mounting plate, and the push plate is mounted at the end of the push plate drive assembly. The push plate is driven by the push plate drive assembly to move the push plate back and forth. The protective cover is connected to the sides and top of the push plate and covers the outside of the push plate drive assembly. When the push plate moves, it drives the protective cover to move together.

2. The pusher plate rejector as described in claim 1, characterized in that, The protective cover is a U-shaped protective plate, and one end of the U-shaped protective plate is connected to the push plate.

3. The pusher plate rejector as described in claim 1 or 2, characterized in that, The protective cover includes a left protective plate, a right protective plate, and an upper sealing plate. The left and right protective plates are arranged parallel to each other on both sides of the push plate, and the upper sealing plate is fixed between the upper part of the push plate, the upper part of the left protective plate, and the upper part of the right protective plate.

4. The pusher plate rejector as described in claim 3, characterized in that, The lower part of the left protective plate is fixed to the lower part of the push plate by a bottom reinforcing block, and the bottom reinforcing block is in contact with the inner wall surface of the left protective plate and the inner wall surface of the push plate. The lower part of the right protective plate is fixed to the lower part of the push plate by a bottom reinforcing block, and the bottom reinforcing block is in contact with the inner wall surface of the right protective plate and the inner wall surface of the push plate.

5. The pusher plate rejector as described in claim 3, characterized in that, The upper part of the upper sealing plate, the upper part of the push plate, and the upper part of the left protective plate are fixed by an upper reinforcing block. The upper reinforcing block is fixedly connected to the upper sealing plate and fits against the inner wall surface of the push plate and the inner wall surface of the left protective plate. The upper sealing plate, the upper part of the push plate, and the upper part of the right protective plate are fixed together by an upper reinforcing block. The upper reinforcing block is fixedly connected to the upper sealing plate and fits against the inner wall surface of the push plate and the inner wall surface of the right protective plate.

6. The pusher plate rejector as described in claim 3, characterized in that, At least one central reinforcing block is installed on each side of the upper sealing plate, and the central reinforcing block is connected and fixed to the left protective plate and the right protective plate respectively.

7. The pusher plate rejector as described in claim 3, characterized in that, Multiple support columns are arranged at intervals between the inner walls of the left and right protective plates.

8. The pusher plate rejector as described in claim 3, characterized in that, The push plate rejector also includes a frame and a clamping block assembly, the clamping block assembly being mounted on the side of the frame for connection to an external mechanism; the rejector mounting plate is fixed to the upper end of the frame.

9. The pusher plate rejector as described in claim 3, characterized in that, The push plate rejector also includes an end guard, which is fixed to the end of the rejector mounting plate away from the push plate.

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