In-mold visual device for assisting ejection

Abstract

The utility model discloses an in-mold visual device for assisting ejection, which comprises an injection molding machine, a mold locking component, a mold, an ejection mechanism, an image acquisition system, an image storage system and an image processing system, the mold locking component comprises a front mold plate, a movable mold plate and a rear mold plate, the mold comprises a movable mold and a fixed mold, the movable mold is connected with the movable mold plate, and the fixed mold is connected with the front mold plate; the ejection mechanism is connected with the movable mold plate or the front mold plate; the image acquisition system comprises a first camera assembly and a second camera assembly, the first camera assembly is arranged on the outer side of the movable mold plate, the second camera assembly is arranged on the outer side of the front mold plate, the first camera assembly faces the center of the fixed mold, and the second camera assembly faces the center of the movable mold. According to the utility model, on-site monitoring by personnel is not needed, and the condition that a product is ejected out of the mold can be monitored and judged in real time on the basis of image monitoring and processing.

Description

Technical Field

[0001] The utility model relates to the technical field of demoulding equipment for injection molding machines, in particular to an in-mold visual device for auxiliary ejection. Background Art

[0002] The injection molding process is the first choice for mass production of products of various shapes. Even the raw materials can be changed according to the functions / services to be performed by the final product. The injection molding machine is an indispensable part of the injection molding process. Granular or powdered plastic is added into the barrel, and the plastic is molten through the rotation of the screw and the heating of the outer wall of the barrel. Then the injection molding machine performs mold closing and injection. During the injection process, the nozzle is placed close to the gate of the mold, and then the injection cylinder is controlled to push the screw forward, so that the molten material is injected into the mold at a very high pressure and a fast speed. After a certain period of pressure maintenance and cooling, it is solidified and formed, and then the mold can be opened.

[0003] Generally, after the mold is opened, the ejection mechanism in the injection molding machine will eject the product. However, due to poor cooling, poor mold ejection, product adhesion, etc., the product does not leave the mold during a single ejection process, affecting subsequent injection molding and even damaging the mold. A common solution is for the operator to be at the side of the machine. If the product does not demold, stop the machine and remove it manually; another solution is to control the equipment to eject multiple times. All of the above methods have significant defects, requiring operators to be on duty for a long time or affecting production efficiency. Utility Model Content

[0004] The utility model aims at solving the problem that when an injection molding machine is demoulding, a worker needs to be sent to observe whether the demoulding cloth is completely released. The utility model provides an auxiliary ejection in-mold visual device which can monitor the ejection of the product from the mold in real time based on image monitoring and processing without the need for on-site monitoring by a worker.

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

[0006] An in-mold visual device for auxiliary ejection includes an injection molding machine, a clamping component, a mold, and also includes an ejection mechanism, an image acquisition system, an image storage system, and an image processing system; the clamping component includes a front template, a movable template, and a rear template, the mold includes a movable mold and a fixed mold, the movable mold is connected to the movable template, and the fixed mold is connected to the front template; the ejection mechanism is connected to the movable template or the front template; the image acquisition system includes a first camera component and a second camera component, the first camera component is arranged on the outside of the movable template, the second camera component is arranged on the outside of the front template, the first camera component faces the center of the fixed mold, and the second camera component faces the center of the movable mold; the first camera component and the second camera component are respectively connected to the image storage system, the image storage system is connected to the image processing system, and the image processing system is connected to the injection molding machine control system.

[0007] This solution uses an image acquisition system, an image storage system, and an image processing system as automatic processing devices that replace human supervision; because the injection molded product is retained on the movable mold or the fixed mold after the injection molding is completed and the mold is opened, the image acquisition system of this solution uses two groups of cameras, the first camera component and the second camera component, which respectively capture and collect images on the parting surface of the movable mold or the fixed mold, and the image data is transmitted to the image storage system for storage. The image processing system includes image processing software, which can analyze the collected multiple pictures through image processing algorithms to determine the actual situation of product demolding; if it is found that the product is not completely demolded, the image processing system feeds back a signal to the injection molding machine control system, and the injection molding machine control system performs another demolding action until the image processing system determines that the demolding has been successfully completed.

[0008] As a preferred solution of the utility model, the mold is provided with a plurality of uniformly distributed product cavities. This solution can distinguish and process a single product or multiple products.

[0009] As a preferred solution of the utility model, the ejection mechanism includes an ejection working machine, an ejection plate, and an ejection rod when connected to the movable template. The ejection working machine is connected to the movable template, the ejection plate is connected to the ejection working machine, the ejection rod is matched with the product cavity on the mold, and the ejection working machine is connected to the injection molding machine control system. The ejection working machine of this solution can perform demolding or demolding under the control of the injection molding machine control system.

[0010] As a preferred solution of the utility model, the ejection mechanism includes a pneumatic blowing device when connected to the front template, the front template is provided with an airway connected to the mold cavity, the pneumatic blowing device is provided with an electric valve, the electric valve is connected to the airway, and the electric valve is connected to the injection molding machine control system. The airway of this solution is closed during injection molding, such as by using an ejector pin, a valve closure, etc., the electric valve closes the connection with the airway, after the injection molding is completed, the closed structure is removed, the electric valve is opened to connect with the airway, the pneumatic blowing device introduces gas into the mold cavity through the electric valve to blow out the product, and the electric valve is closed; if it is determined that the product is demolded, the electric valve can be opened again to blow air until the product is demolded.

[0011] As a preferred solution of the utility model, the image processing system is connected to an alarm device, and the alarm device is provided with a sound device and / or a light device. In this solution, if the image processing system determines that the demoulding is not completed, and after two, three or more demoulding actions, it is still determined that the demoulding is not completed, an audible and visual alarm signal will be issued to draw the attention of the staff and to manually handle it on site.

[0012] As a preferred solution of the utility model, the angle between the central axis of the lens of the first camera assembly when acquiring an image and the fixed mold surface is not less than 40 degrees, and the angle between the central axis of the lens of the second camera assembly when acquiring an image and the movable mold surface is not less than 40 degrees. This solution has conditional restrictions on the image monitoring of the mold, because the camera can only be installed on the outside of the moving template or the front template, so there is a limitation on the observation angle. If the observation angle is too small, the observation area in the distance is not clear enough. The solution is to either limit the observation angle to not be too small, or to increase the number of cameras to observe from multiple positions outside the moving template or the front template at the same time.

[0013] Compared with the prior art, the utility model has the beneficial effects of: no on-site monitoring by personnel is required, and on the basis of image monitoring and processing, the ejection situation of the product from the mold can be monitored and judged in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 It is a side structural schematic diagram of the utility model.

[0016] Figure 3 The utility model is a working process principle diagram.

[0017] In the figure: 1. front template 2. movable template 3. rear template 4. movable mold

[0018] 5. Fixed mold 6. First camera assembly 7. Second camera assembly

[0019] 8. Sheet metal 9. Working machine 10. Ejector plate 11. Ejector rod

[0020] 12. Electric valve. DETAILED DESCRIPTION

[0021] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this article includes any and all combinations of one or more related listed items.

[0024] See also Figure 1-Figure 3 , the utility model provides a technical solution:

[0025] An in-mold visual device for auxiliary ejection includes an injection molding machine, a clamping component, a mold, and also includes an ejection mechanism, an image acquisition system, an image storage system, and an image processing system; the clamping component includes a front template 1, a movable template 2, and a rear template 3, and the mold includes a movable mold 4 and a fixed mold 5, the movable mold 4 is connected to the movable template 2, and the fixed mold 5 is connected to the front template 1; the ejection mechanism is connected to the movable template 2 or the front template 1; the image acquisition system includes a first camera component 6 and a second camera component 7, the first camera component 6 is arranged on the outside of the movable template 2, and the second camera component 7 is arranged on the sheet metal part 8 outside the front template 1, the first camera component 6 faces the center of the fixed mold 5, and the second camera component 7 faces the center of the movable mold 4; the first camera component 6 and the second camera component 7 are respectively connected to the image storage system, the image storage system is connected to the image processing system, and the image processing system is connected to the injection molding machine control system.

[0026] The mold is provided with a plurality of evenly distributed product cavities.

[0027] When the ejection mechanism is connected to the movable template 2, it includes an ejection working machine 9, an ejection plate 10, and an ejection rod 11. The ejection working machine 9 is connected to the movable template 2, the ejection plate 10 is connected to the ejection working machine 9, the ejection rod 11 is connected to the ejection plate 10 and is matched with the product cavity on the mold, and the ejection working machine 9 is connected to the injection molding machine control system.

[0028] When the ejection mechanism is connected to the front template 1, it includes a pneumatic blowing device. The front template 1 is provided with an air channel connected to the cavity. The pneumatic blowing device is provided with an electric valve 12, which is connected to the air channel and connected to the injection molding machine control system.

[0029] The image processing system is connected to an alarm device, and the alarm device is provided with a sound device and / or a light emitting device.

[0030] When the first camera assembly 6 acquires an image, the angle between the central axis of the lens and the parting surface of the fixed mold 5 is not less than 40 degrees. When the second camera assembly 7 acquires an image, the angle between the central axis of the lens and the parting surface of the movable mold 4 is not less than 40 degrees.

[0031] The workflow of this utility model includes the following steps:

[0032] Step 1: Preparation before injection molding machine operation;

[0033] Step 2: The injection molding machine performs pre-injection molding once, and adjusts the first camera component 6 and the second camera component 7 to collect reference images, and the image processing software processes the reference images;

[0034] Step 3: The injection molding machine performs formal injection molding, performs injection molding once, and the ejection mechanism ejects the product and records the number of times, and then triggers the first camera assembly 6 and the second camera assembly 7 to collect images respectively, and obtain two target images;

[0035] Step 4: The image processing software analyzes the target image to determine whether the product is demoulded. If the product is not demoulded, the ejection mechanism is controlled to eject again. If the product is demoulded, the injection molding machine continues to work.

[0036] During normal production, after the injection molding is completed and the mold is opened, the product remains on the movable mold 4 or the fixed mold 5. The image acquisition system of this solution uses two sets of cameras, the first camera component 6 and the second camera component 7, to respectively capture images on the parting surface of the movable mold 4 or the fixed mold 5. The image data is transmitted to the image storage system for storage. The image processing system includes image processing software, which can analyze the collected multiple pictures through the image processing algorithm to determine the actual situation of product demolding;

[0037] If it is found that the product is not completely demoulded, the image processing system will feedback the signal to the injection molding machine control system, and the injection molding machine control system will control the ejection mechanism to perform another demoulding action until the image processing system determines that the demoulding has been successfully completed;

[0038] If the image processing system determines that demoulding is still not completed after the second or third demoulding action, the injection molding demoulding process is terminated and an alarm signal is sent to the operator.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An in-mold visual device for auxiliary ejection, comprising an injection molding machine, a clamping component, and a mold. Features: It also includes an ejection mechanism, an image acquisition system, an image storage system, and an image processing system; The clamping component includes a front template, a movable template, and a rear template, and the mold includes a movable mold and a fixed mold. The movable mold is connected to the movable template, and the fixed mold is connected to the front template. The ejection mechanism is connected to the movable template or the front template; The image acquisition system comprises a first camera assembly and a second camera assembly, wherein the first camera assembly is arranged outside the movable template, and the second camera assembly is arranged outside the front template, the first camera assembly faces the center of the fixed mold, and the second camera assembly faces the center of the movable mold; The first camera assembly and the second camera assembly are respectively connected to the image storage system, the image storage system is connected to the image processing system, and the image processing system is connected to the injection molding machine control system.

2. The in-mold visual device for assisting ejection according to claim 1, Features: The mold is provided with a plurality of evenly distributed product cavities.

3. The in-mold visual device for assisting ejection according to claim 1, Features: When the ejection mechanism is connected to the movable template, it includes an ejection working machine, an ejection plate, and an ejection rod. The ejection working machine is connected to the movable template, the ejection plate is connected to the ejection working machine, the ejection rod is matched with the product cavity on the mold, and the ejection working machine is connected to the injection molding machine control system.

4. The in-mold visual device for assisting ejection according to claim 1, Features: The ejection mechanism comprises a pneumatic blowing device when connected to the front template, the front template is provided with an air passage connected to the cavity, the pneumatic blowing device is provided with an electric valve, the electric valve is connected to the air passage, and the electric valve is connected to the injection molding machine control system.

5. The in-mold visual device for assisting ejection according to claim 1, Features: The image processing system is connected to an alarm device, and the alarm device is provided with a sound-generating device and / or a light-emitting device.

6. The in-mold visual device for assisting ejection according to claim 1, Features: When the first camera assembly acquires an image, the angle between the central axis of the lens and the fixed mold surface is not less than 40 degrees, and when the second camera assembly acquires an image, the angle between the central axis of the lens and the movable mold surface is not less than 40 degrees.

Images