Device for preventing PP sequence and sheet number from being placed mistakenly

Abstract

The utility model relates to the technical field of production material mistake proofing, in particular to a device for preventing PP (polypropylene) from being placed in sequence and in number mistakes, which comprises a multi-layer frame formed by welding at least two horizontal table boards through supporting rods, and correlation induction gratings mounted on the side surfaces of the table boards and used for detecting taking and placing actions of PP sheets. The electronic scale is embedded into the bottom of each table top of the multi-layer frame and used for detecting the weight change of the PP sheets on the table tops, and the control module is in signal connection with the electronic scales and the correlation induction gratings. The design concept of the device pays attention to practicability and convenience, extremely high efficiency and safety are shown in the assembling process and the using process, the device is provided with a double-mistake-proofing structure, through the combination of photoelectric induction and weighing, PP sequence errors and PP sheet number errors can be prevented, the problems of sequence and sheet number are synchronously solved, and in addition, the device is convenient to use. The device is friendly to operate, can give an alarm in time when a person takes mistakenly, and relieves psychological burdens of operators through external prompts.

Description

Technical Field

[0001] This utility model belongs to the field of production material error prevention technology, specifically relating to a device for preventing incorrect placement of PP sheets in sequence and number. Background Technology

[0002] Polypropylene (PP) is used as an insulating material between adjacent layers in PCBs. In PCB manufacturing, the insulating layer formed by PP is called the dielectric layer or dielectric layer. PP is generally used in the rigid portion of rigid PCBs and rigid-flex PCBs.

[0003] In existing technologies, a weighing sensor is typically integrated inside the machine to accumulate weight changes and determine if the number of PP sheets is incorrect. However, existing solutions have the following drawbacks:

[0004] 1. Inability to detect incorrect sequence: If the operator mistakenly takes an adjacent layer of PP sheets, the alarm will not be triggered because the weights are the same;

[0005] 2. Reliance on internal machine modifications: The machine needs to be shut down to install the weighing module, which affects production efficiency. Utility Model Content

[0006] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a device that prevents errors in the order and number of printed sheets (PPs). This device can prevent both errors in the PP order and the number of PPs, and can also provide timely alarm prompts when personnel make mistakes.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a device for preventing incorrect placement of PP sheets in sequence and number, comprising:

[0008] A multi-layered frame, consisting of at least two horizontal platform surfaces welded together by support rods;

[0009] Through-beam sensor gratings are installed on the side of each table to detect the picking and placing of PP sheets;

[0010] An electronic scale, embedded in the bottom of each table of the multi-layer rack, is used to detect the weight change of the PP sheets on the table.

[0011] The control module is connected to the electronic scale and the through-beam sensor grating signal. The control module includes a sequence setting unit for presetting the order of picking up and placing PP sheets, a quality threshold setting unit for setting the single sheet quality value of each layer of PP sheets, and an alarm unit that triggers an alarm when the picking and placing order is detected to be inconsistent with the preset order, or when the weight loss value deviates from the preset single sheet quality value by an integer multiple exceeding the threshold.

[0012] Preferably, the electronic scale has an accuracy of 1g.

[0013] Preferably, the horizontal spacing of the through-beam sensor grating is 5-10cm, and the installation height matches the stacking height of the PP sheets on the table.

[0014] Preferably, the alarm unit includes an audible and visual alarm and a stop signal output interface interlocked with the production system.

[0015] Preferably, the multi-layer shelf has 3-5 layers, and the layer spacing is adjustable.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: The design concept of this utility model focuses on practicality and convenience. It demonstrates extremely high efficiency and safety in both assembly and use. It has a dual error-proof structure. By combining photoelectric sensing and weighing, it can prevent both PP sequence errors and PP sheet count errors, simultaneously solving the sequence and sheet count problems. In addition, this device is user-friendly and can promptly alarm and prompt when personnel make mistakes. External prompts reduce the psychological burden on operators, thereby reducing the error rate and improving work efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the device of this utility model.

[0018] In the diagram: 1. Multi-layer shelf; 2. Through-beam sensor grating; 3. Electronic scale; 4. Control module. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] The following reference Figure 1 This application describes an embodiment of a device for preventing incorrect placement of PP sheets in order and number.

[0021] A device for preventing incorrect placement of PP sheets in order and number, comprising:

[0022] Multi-layer frame 1, consisting of at least two horizontal platform surfaces welded together by support rods;

[0023] The through-beam sensor grating 2 is installed on the side of each table to detect the picking and placing of PP sheets;

[0024] An electronic scale 3 is embedded in the bottom of each platform of the multi-layer rack 1 to detect the weight change of the PP sheet on the platform;

[0025] The control module 4 is connected to the electronic scale 3 and the through-beam sensor grating 2. The control module 4 includes a sequence setting unit for setting the order of picking up and placing PP sheets, a quality threshold setting unit for setting the single sheet quality value of each layer of PP sheets, and an alarm unit that triggers an alarm when the picking and placing order is detected to be inconsistent with the preset order, or when the weight loss value deviates from the preset single sheet quality value by an integer multiple exceeding the threshold.

[0026] Furthermore, the electronic scale 3 has an accuracy of 1g.

[0027] Furthermore, the horizontal spacing of the through-beam sensing grating 2 is 5-10cm, and the installation height matches the stacking height of the PP sheets on the table.

[0028] In a further embodiment, the alarm unit includes an audible and visual alarm and a shutdown signal output interface interlocked with the production system.

[0029] In a further embodiment, the multi-layer shelf 1 has 3-5 layers, and the layer spacing is adjustable.

[0030] The specific working process of a device for preventing incorrect placement of PP sheets in sequence and quantity according to the above embodiments is described below: First, a platform including an electronic scale 3 is made, requiring the electronic scale 3 to have an accuracy of 1g. Then, the platform and support rods are welded together to form a multi-layer rack 1. A photosensitive grating 2 is installed on the side of each platform. The host software can be edited to set the picking and placing sequence and weight settings. In use, the sheet PP sheets are placed layer by layer on the multi-layer rack 1 platform according to the placement sequence in the work order stacking structure, starting from the first layer. Note that if the same PP is used in different layers, they can be placed on the same platform of the multi-layer rack 1. The layer number is edited in the control module 4 as the production sequence, and the weight loss after each picking is set. For example, if the first layer of PP should be picked, but the operator picks the second layer, the grating will sense and alarm. If the first layer should have 1 sheet of PP and the weight loss is 10g, but the operator picks 2 sheets of PP and the weight loss reaches 20g, an alarm will be triggered.

[0031] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0032] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A device for preventing incorrect placement of PP sheets in order and number, characterized in that: The application relates to a polypropylene (PP) sheet taking and placing device, which comprises the following parts: a multi-layer frame (1) composed of at least two water platforms and support rods; a pair of induction light barriers (2) installed on the side of each platform and used for detecting the taking and placing actions of the PP sheets; an electronic scale (3) embedded in the bottom of each platform of the multi-layer frame (1) and used for detecting the weight change of the PP sheets on the platform; a control module (4) connected with the electronic scale (3) and the pair of induction light barriers (2), wherein the control module (4) comprises a sequence setting unit used for presetting the taking and placing layer sequence of the PP sheets, a mass threshold setting unit used for setting the mass value of each PP sheet, and an alarm unit used for triggering the alarm when the taking and placing sequence is inconsistent with the preset sequence or the weight loss value deviates from the integer multiple of the preset mass value of each PP sheet by more than the threshold value.

2. The device for preventing PP sequence and number of places placement errors according to claim 1, characterized in that: The precision of the electronic scale (3) is 1g.

3. The device for preventing the PP sequence and number of places from being placed incorrectly according to claim 1, characterized in that: The horizontal interval of the pair of induction light barriers (2) is 5-10cm, and the installation height matches the stacking height of the PP sheets on the platform.

4. The device for preventing PP sequence and number of places placement errors according to claim 1, characterized in that: The alarm unit comprises an audible and visual alarm and a shutdown signal output interface connected with a production system.

5. The device for preventing the PP sequence and number of places from being placed incorrectly according to claim 1, characterized in that: The number of the platforms of the multi-layer frame (1) is 3-5, and the interval between the platforms is adjustable.

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