Defective product removing device based on automatic cap screwing machine assembly line

Abstract

The utility model belongs to the technical field of machining equipment, and particularly relates to an inferior-quality product removing device based on an automatic cap screwing machine assembly line, which comprises a conveying mechanism and a controller, one side of the conveying mechanism is provided with a rear sensor assembly located on the rear side of the automatic cap screwing machine and a rear removing mechanism used for removing defective toothpick holders on the conveying mechanism after cap screwing. The rear sensor assembly comprises a rear in-place sensor used for sensing the toothpick holder with the cap screwed, and a first height sensor and a second height sensor which are used for detecting the height of the toothpick holder with the cap screwed. The controller is respectively connected with the back-end in-place sensor, the first height sensor, the second height sensor and the back-end removing mechanism, and is used for receiving signals sent by the back-end in-place sensor, the first height sensor and the second height sensor and controlling the back-end removing mechanism to act according to the signals.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing equipment, in particular to a defective product rejection device based on an automatic capping machine assembly line. Background Art

[0002] In order to facilitate the transportation, storage, sale and use of toothpicks, toothpicks are generally equipped with a toothpick holder. The toothpick holder mainly includes a cylinder and a cover. When packaging toothpicks, a large number of toothpicks are generally filled directly into the cylinder using a toothpick feeding device, and then the cover is closed and tightened.

[0003] At present, there are two main ways to tighten the cover of a toothpick holder during the toothpick production process: one is to rely on manual labor to screw the cover, which leads to increased labor costs and low production efficiency; the other is to use mechanical equipment such as a capping machine on an automatic toothpick capping assembly line to screw the cover. For example, the Chinese utility model patent CN202123324516.6 disclosed an automated capping mechanism. This method has the following shortcomings: if there are irregularities such as the cover being missed or lost before capping, or the cover being tilted and unable to be tightened on the barrel, resulting in an over-height of the cover, defective products will be mixed into the qualified products after the capping machine is used to tighten the cover, resulting in a decrease in the qualified rate of the finished product. Therefore, in response to the above problems, it is urgently necessary to develop a defective product rejection device based on an automatic capping machine assembly line. Utility Model Content

[0004] The purpose of the utility model is to address the deficiencies in the prior art and to provide a defective product rejection device based on an automatic capping machine assembly line with a reasonable design, simple structure, and the ability to automatically detect and reject defective products with high accuracy.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A defective product rejection device based on an automatic capping machine assembly line, comprising a conveying mechanism and a controller, wherein the conveying mechanism is arranged below the automatic capping machine on the assembly line and is used to convey toothpick tubes from front to back, a back-channel sensor assembly located at the back side of the automatic capping machine and a back-channel rejection mechanism for rejecting defective toothpick tubes after the cap is screwed on the conveying mechanism on one side, the back-channel sensor assembly comprising a back-channel in-position sensor for sensing the toothpick tube after the cap is screwed, a first height sensor and a second height sensor for detecting the height of the toothpick tube after the cap is screwed; the controller is respectively connected to the back-channel in-position sensor, the first height sensor, the second height sensor and the back-channel rejection mechanism, and is used to receive signals sent by the back-channel in-position sensor, the first height sensor and the second height sensor and control the action of the back-channel rejection mechanism according to the signals.

[0007] Preferably, the post-process rejection mechanism includes a mounting frame, a defective product collection frame, a pushing telescopic cylinder and a pushing plate. The mounting frame and the defective product collection frame are respectively arranged on the left and right sides of the conveying mechanism. The feed port of the defective product collection frame is docked with the conveying mechanism. The mounting frame is provided with a pushing telescopic cylinder. The telescopic end of the pushing telescopic cylinder is provided with a pushing plate for pushing the defective toothpick holder after the cover on the conveying mechanism is screwed on.

[0008] Preferably, the other side of the conveying mechanism is provided with a front-end sensor assembly located on the front side of the automatic capping machine and a front-end rejection mechanism for rejecting defective toothpick tubes before the cap is screwed on the conveying mechanism, the front-end sensor assembly includes a front-end in-position sensor for sensing the toothpick tube before the cap is screwed and a third height sensor for detecting the height of the toothpick tube before the cap is screwed; the controller is respectively connected to the front-end in-position sensor, the third height sensor and the front-end rejection mechanism, and is used to receive signals sent by the front-end in-position sensor and the third height sensor and control the action of the front-end rejection mechanism according to the signals.

[0009] Preferably, the front-end rejection mechanism includes a mounting plate and a defective product collection cover, which are respectively arranged on the left and right sides of the conveying mechanism. A blowing hole is provided on the mounting plate for blowing defective products from the toothpick holder before the cover on the conveying mechanism is screwed on into the defective product collection cover.

[0010] Preferably, the front-track in-position sensor and the third height sensor are arranged on the mounting plate in sequence from bottom to top.

[0011] Preferably, the front-end arrival sensor and the third height sensor are both optical fiber sensors.

[0012] Preferably, the downstream arrival sensor and the first height sensor are both optical fiber sensors, and the second height sensor is a laser sensor.

[0013] Preferably, the rear-end arrival sensor, the first height sensor and the second height sensor are arranged in sequence from bottom to top.

[0014] The utility model adopts the above technical solution and has the following technical effects:

[0015] The utility model provides a back-end sensor assembly on the rear side of the automatic capping machine, so that the back-end position sensor, the first height sensor and the second height sensor can be installed in sequence from bottom to top according to the height detection requirements. For example, the back-end position sensor is installed in the height range of the toothpick tube body to automatically sense whether a toothpick tube with a cap is passing through. The first height sensor is installed in the height range of the toothpick tube cover when the toothpick tube is qualified after the capping to automatically detect whether the tube is covered with a cover. The second height sensor is installed at the minimum value of the toothpick tube cover when the toothpick tube is defective after the capping to automatically detect whether the cover on the tube is not tightened and is too high. Through the provided controller and back-end rejection mechanism, the controller can receive signals sent by the back-end position sensor, the first height sensor and the second height sensor, and when it is detected that the toothpick tube that has passed through is defective (including the tube body without a cover, or the tube body with a cover and the cover is too high), the back-end rejection mechanism is controlled to perform a rejection action to reject the defective toothpick tube with a cap from the conveying mechanism.

[0016] The utility model utilizes the back-end sensor component and the back-end rejection mechanism to automatically detect and reject defective products with high accuracy, effectively preventing defective toothpick holders with poorly screwed caps from mixing into qualified products, resulting in a decrease in the qualified rate of finished products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following briefly introduces the drawings required for the embodiments or the prior art description. The following description is given with respect to the drawings:

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from one perspective;

[0019] Figure 2 for Figure 1 A partial enlarged schematic diagram in the middle;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the utility model from another perspective;

[0021] Figure 4 for Figure 3 A partial enlarged schematic diagram of point B in the middle.

[0022] In the picture:

[0023] 100. Automatic capping machine; 200. Conveying mechanism; 300. Controller; 400. Back-end sensor assembly; 410. Back-end in-position sensor; 420. First height sensor; 430. Second height sensor; 500. Back-end rejection mechanism; 510. Mounting frame; 520. Defective product collection frame; 530. Pushing telescopic cylinder; 540. Pushing plate; 600. Front-end sensor assembly; 610. Front-end in-position sensor; 620. Third height sensor; 700. Front-end rejection mechanism; 710. Mounting plate; 720. Defective product collection cover; 730. Blowing hole; 800. Alarm. DETAILED DESCRIPTION

[0024] The embodiments described below are only a portion of the embodiments of the present invention and do not represent all embodiments consistent with the present invention. The exemplary embodiments are described below in conjunction with the accompanying drawings:

[0025] See Figure 1-4 As shown in FIG1 , the defective product rejection device based on the automatic capping machine assembly line of the present invention includes an automatic capping machine 100 and a conveying mechanism 200. The conveying mechanism 200 is arranged below the automatic capping machine 100 on the assembly line and is used to convey the toothpick tube from front to back. It should be noted that the above-mentioned automatic capping machine 100 and the conveying mechanism 200 are respectively conventional equipment in the prior art in this field that can realize tightening the cover body and conveying the toothpick tube, and they will not be repeated in this article.

[0026] In order to automatically reject defective toothpick tubes after the cap is screwed on the assembly line, the present invention also includes a controller 300, a back-end sensor assembly 400 and a back-end rejection mechanism 500. One side of the conveying mechanism 200 is provided with a back-end sensor assembly 400 located on the rear side of the automatic capping machine 100 and a back-end rejection mechanism 500 for rejecting defective toothpick tubes after the cap is screwed on the conveying mechanism 200. The back-end sensor assembly 400 includes a back-end in-position sensor 410 for sensing the toothpick tube after the cap is screwed, and a first height sensor 420 and a second height sensor 430 for detecting the height of the toothpick tube after the cap is screwed; the controller 300 is respectively connected to the back-end in-position sensor 410, the first height sensor 420, the second height sensor 430 and the back-end rejection mechanism 500, and is used to receive signals sent by the back-end in-position sensor 410, the first height sensor 420 and the second height sensor 430 and control the action of the back-end rejection mechanism 500 according to the signals.

[0027] In this embodiment, by setting the back-end sensor assembly 400 at the rear side of the automatic capping machine 100, it is possible to install the back-end in-place sensor 410, the first height sensor 420 and the second height sensor 430 in sequence from bottom to top according to the height detection requirements. For example, the back-end in-place sensor 410 is installed in the height range of the toothpick tube body to automatically sense whether there is a toothpick tube passing by after the cap is screwed on, the first height sensor 420 is installed in the height range of the toothpick tube cover when the toothpick tube is a qualified product after the cap is screwed on, and is used to automatically detect whether there is a cover on the tube body, and the second height sensor 430 is installed at the minimum value of the toothpick tube cover when the toothpick tube is a defective product after the cap is screwed on, and is used to automatically detect whether the cover on the tube body is not tightened and caused to be too high; by setting the control The controller 300 and the post-process rejection mechanism 500 enable the controller 300 to receive signals from the post-process in-position sensor 410, the first height sensor 420, and the second height sensor 430, and when it detects that a toothpick holder that has been capped is defective (i.e., when the post-process in-position sensor 410 has sensing data and the first height sensor 420 has no detection data, it indicates that the holder is not covered with a cap; and when the post-process in-position sensor 410 has sensing data, the first height sensor 420 has detection data, and the second height sensor 430 has detection data, it indicates that the holder is covered with a cap and the cap is too high), the post-process rejection mechanism 500 is controlled to perform a rejection action to reject the defective toothpick holder that has been capped from the conveying mechanism 200. It should be noted that the controller 300 is a conventional device in the prior art, for example, it can be a Mitsubishi FX3U series PLC controller.

[0028] See Figure 4 As shown, as a preferred embodiment, on the basis of the above structure, preferably, the post-process rejection mechanism 500 includes a mounting frame 510, a defective product collection frame 520, a pushing telescopic cylinder 530 and a pushing plate 540. The mounting frame 510 and the defective product collection frame 520 are respectively arranged on the left and right sides of the conveying mechanism 200. The feed port of the defective product collection frame 520 is docked with the conveying mechanism 200. The mounting frame 510 is provided with a pushing telescopic cylinder 530. The telescopic end of the pushing telescopic cylinder 530 is provided with a pushing plate 540 for pushing the defective toothpick holder after the cover on the conveying mechanism 200 is screwed on.

[0029] On the basis of the above structure, preferably, the rear-end arrival sensor 410, the first height sensor 420 and the second height sensor 430 are arranged in sequence from bottom to top.

[0030] In order to automatically remove defective toothpick holders before screwing the cap on the production line, refer to Figure 2As shown, as a preferred embodiment, on the basis of the above structure, further, the other side of the conveying mechanism 200 is respectively provided with a front-end sensor assembly 600 located on the front side of the automatic capping machine 100 and a front-end rejection mechanism 700 for rejecting defective toothpick tubes before the cap is screwed on the conveying mechanism 200. The front-end sensor assembly 600 includes a front-end in-position sensor 610 for sensing the toothpick tube before the cap is screwed and a third height sensor 620 for detecting the height of the toothpick tube before the cap is screwed; the controller 300 is respectively connected to the front-end in-position sensor 610, the third height sensor 620 and the front-end rejection mechanism 700, and is used to receive signals sent by the front-end in-position sensor 610 and the third height sensor 620 and control the action of the front-end rejection mechanism 700 according to the signals.

[0031] In this embodiment, by disposing a front-end sensor assembly 600 at the front side of the automatic capping machine 100, a front-end position sensor 610 and a third height sensor 620 can be sequentially installed from bottom to top according to height detection requirements. For example, the front-end position sensor 610 is installed within the height range of the toothpick holder lid to automatically sense whether a pre-capped toothpick holder passes by, and the third height sensor 620 is installed within a cylinder height range greater than the height of the toothpick holder lid to automatically detect whether it is a pre-capped toothpick holder body. By providing a controller 300 and a front-end rejection mechanism 700, the controller 300 is capable of receiving signals sent by the front-end position sensor 610 and the third height sensor 620. When it is detected that a pre-capped toothpick holder passing by is defective (i.e., when the front-end position sensor 610 has sensing data and the third height sensor 620 has no detection data, it indicates that the toothpick holder body passing by is not a pre-capped toothpick holder body but may be a lid body), the controller 300 controls the front-end rejection mechanism 700 to perform a rejection action to reject the defective pre-capped toothpick holder from the conveying mechanism 200.

[0032] Based on the above structure, preferably, as an embodiment, the structure of the front-end rejection mechanism 700 is exactly the same as that of the back-end rejection mechanism 500. Since the defective toothpick tubes before the cap is screwed off by the front-end rejection mechanism 700 are usually the cap bodies, which are relatively light in weight, a front-end rejection mechanism 700 with a simpler structure can be used. As another embodiment, the front-end rejection mechanism 700 includes a mounting plate 710 and a defective product collection cover 720. The mounting plate 710 and the defective product collection cover 720 are respectively arranged on the left and right sides of the conveying mechanism 200. The mounting plate 710 is provided with a blowing hole 730 for blowing the defective toothpick tubes before the cap is screwed off on the conveying mechanism 200 into the defective product collection cover 720. The blowing hole 730 is connected to an external high-pressure air source device through a pipeline.

[0033] On the basis of the above structure, preferably, the front-end arrival sensor 610 and the third height sensor 620 are sequentially arranged on the mounting plate 710 from bottom to top.

[0034] Based on the above structure, preferably, the rear-end arrival sensor 410, the first height sensor 420, the front-end arrival sensor 610 and the third height sensor 620 are all optical fiber sensors; and the second height sensor 430 is a laser sensor.

[0035] As a preferred embodiment, based on the above structure, the utility model further includes an alarm 800, which is connected to the controller 300 so that when it is detected that the toothpick holder is defective before the cap is screwed on or after the cap is screwed on, the controller 300 controls the alarm 800 to send an alarm signal to remind.

[0036] The above are only preferred specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any equivalent changes, modifications, substitutions and variations made by technicians in this technical field based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of existing technologies should be within the scope of protection determined by the claims.

Claims

1. A defective product rejection device based on an automatic capping machine production line, comprising a conveying mechanism (200) and a controller (300), wherein the conveying mechanism (200) is arranged below the automatic capping machine (100) on the production line and is used to convey toothpick holders from front to back, and is characterized in that: One side of the conveying mechanism (200) is provided with a back-end sensor assembly (400) located at the rear side of the automatic capping machine (100) and a back-end rejection mechanism (500) for rejecting defective toothpick tubes after the cap is screwed on the conveying mechanism (200). The back-end sensor assembly (400) includes a back-end in-position sensor (410) for sensing the toothpick tube after the cap is screwed, a first height sensor (420) and a second height sensor (430) for detecting the height of the toothpick tube after the cap is screwed; the controller (300) is respectively connected to the back-end in-position sensor (410), the first height sensor (420), the second height sensor (430) and the back-end rejection mechanism (500), and is used to receive signals sent by the back-end in-position sensor (410), the first height sensor (420) and the second height sensor (430) and control the operation of the back-end rejection mechanism (500) according to the signals.

2. The defective product rejection device based on the automatic capping machine assembly line according to claim 1 is characterized in that: The post-process rejection mechanism (500) comprises a mounting frame (510), a defective product collection frame (520), a pusher telescopic cylinder (530) and a push plate (540). The mounting frame (510) and the defective product collection frame (520) are respectively arranged on the left and right sides of the conveying mechanism (200). The feed port of the defective product collection frame (520) is docked with the conveying mechanism (200). The mounting frame (510) is provided with a pusher telescopic cylinder (530). The telescopic end of the pusher telescopic cylinder (530) is provided with a push plate (540) for pushing defective toothpick holders after the cover is screwed on the conveying mechanism (200) into the defective product collection frame (520).

3. The defective product rejection device based on the automatic capping machine assembly line according to claim 1 is characterized in that: The other side of the conveying mechanism (200) is respectively provided with a front-end sensor assembly (600) located at the front side of the automatic capping machine (100) and a front-end rejection mechanism (700) for rejecting defective toothpick tubes before the cap is screwed on the conveying mechanism (200), wherein the front-end sensor assembly (600) comprises a front-end in-position sensor (610) for sensing the toothpick tube before the cap is screwed and a third height sensor (620) for detecting the height of the toothpick tube before the cap is screwed; the controller (300) is respectively connected to the front-end in-position sensor (610), the third height sensor (620) and the front-end rejection mechanism (700), and is used to receive signals sent by the front-end in-position sensor (610) and the third height sensor (620) and control the operation of the front-end rejection mechanism (700) according to the signals.

4. The defective product rejection device based on the automatic capping machine assembly line according to claim 3 is characterized in that: The front-end rejection mechanism (700) comprises a mounting plate (710) and a defective product collection cover (720), the mounting plate (710) and the defective product collection cover (720) being respectively arranged on the left and right sides of the conveying mechanism (200), and a blowing hole (730) for blowing defective toothpick holders before the cover is screwed on the conveying mechanism (200) into the defective product collection cover (720).

5. The defective product rejection device based on the automatic capping machine assembly line according to claim 4 is characterized in that: The front-track arrival sensor (610) and the third height sensor (620) are sequentially arranged on the mounting plate (710) from bottom to top.

6. The defective product rejection device based on the automatic capping machine assembly line according to claim 3 is characterized in that: The front-end arrival sensor (610) and the third height sensor (620) are both optical fiber sensors.

7. The defective product rejection device based on the automatic capping machine assembly line according to claim 1 is characterized in that: The back-end arrival sensor (410) and the first height sensor (420) are both optical fiber sensors, and the second height sensor (430) is a laser sensor.

8. The defective product rejection device based on the automatic capping machine assembly line according to claim 1 is characterized in that: The rear-end arrival sensor (410), the first height sensor (420), and the second height sensor (430) are arranged in sequence from bottom to top.

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