Device for controlling automatic lifting of grinding head of polishing and grinding machine

Abstract

The utility model discloses a device for controlling automatic lifting of a grinding head of a polishing and grinding machine, and belongs to the technical field of adjustment of the grinding head of the polishing and grinding machine. The problem that in the prior art, due to the fact that adjustment of a grinding head of a traditional polishing and grinding machine depends on manual operation, the efficiency and the automation degree are low is solved. A PLC (Programmable Logic Controller) is respectively connected with a grinding head driving motor and a lifting hydraulic cylinder of an automatic lifting device; the grinding head driving motor is connected with the lifting hydraulic cylinder of the automatic lifting device; the automatic lifting device further comprises a fixed rack, a grinding head base, a transmission wheel fixing device, a grinding wheel and a grinding wheel belt. The grinding head driving motor is respectively connected with the lifting hydraulic cylinder and a support of the grinding head seat, the grinding head driving motor is arranged above the fixed machine frame, a grinding wheel belt is arranged in the fixed machine frame, the fixed machine frame is provided with a grinding wheel, and the bottom of the grinding wheel is connected with a transmission wheel fixing device. The grinding head adjusting device can be applied to automatically adjusting the grinding head of the polishing and grinding machine and meets the requirement for automation.

Description

TECHNICAL FIELD

[0001] The utility model relates to a device for controlling the automatic lifting of the grinding head of a polishing grinder, and belongs to the technical field of grinding head adjustment for polishing grinders. BACKGROUND

[0002] In the prior art, the grinding head of a polishing grinder is ground by contact with the root bar of the grinding wheel, and the operator needs to adjust the lifting of the grinding head according to the sparks generated during grinding and the instantaneous current during grinding. Because the grinding wheel is constantly worn, the operator needs to frequently adjust the lifting of the grinding head (generally 6 grinding heads). According to statistics, the grinding head needs to be adjusted to rise 18 times and to fall 30 times per hour on average. The operator needs to frequently repeat the operation, and the work intensity is high.

[0003] In view of the above, there is a need for a device for controlling the automatic lifting of the grinding head of a polishing grinder. SUMMARY

[0004] In the following, a brief summary of the utility model is given in order to provide a basic understanding of some aspects of the utility model. It should be understood that this summary is not an exhaustive summary of the utility model. It is not intended to determine the key or important parts of the utility model, nor is it intended to limit the scope of the utility model. Its purpose is only to give some concepts in a simplified form as a prelude to the more detailed description discussed later.

[0005] In view of this, in order to solve the problem of low efficiency and automation degree caused by relying on manual operation in the traditional grinding head adjustment of a polishing grinder in the prior art, the utility model provides a device for controlling the automatic lifting of the grinding head of a polishing grinder.

[0006] The technical scheme is as follows: a device for controlling the automatic lifting of the grinding head of a polishing grinder, comprising a grinding head driving motor, a PLC controller and an automatic lifting device;

[0007] The PLC controller is connected with the grinding head driving motor and the lifting hydraulic cylinder of the automatic lifting device, and the grinding head driving motor is connected with the lifting hydraulic cylinder of the automatic lifting device.

[0008] Further, the automatic lifting device further comprises a fixed frame, a grinding head seat, a transmission wheel fixing device, a grinding wheel and a grinding wheel belt.

[0009] The grinding head driving motor is connected with the lifting hydraulic cylinder and the support of the grinding head seat, the grinding head driving motor is arranged above the fixed frame, the fixed frame is provided with the grinding wheel belt, the fixed frame and the fixed frame are provided with the grinding wheel, and the bottom of the grinding wheel is connected with the transmission wheel fixing device.

[0010] The utility model discloses a beneficial effect as follows: the utility model discloses a grinding head drive motor's current is detected to PLC controller, after manual primary manual adjustment, record current as set current, when the subsequent process, the grinding head drive motor is less than or greater than set current, and PLC controller controls lifting hydraulic cylinder through the program to height automatic regulation of grinding head is realized. BRIEF DESCRIPTION OF DRAWINGS

[0011] The drawings described herein are used to provide further understanding of the utility model, and constitute a part of the utility model, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute undue limitation on the utility model. In the drawings:

[0012] Figure 1 It is a kind of control device's structural schematic diagram of the automatic lifting of grinding head of throwing grinder;

[0013] Figure 2 It is the structural schematic diagram of grinding head drive motor and automatic lifting device;

[0014] Figure 3 It is the schematic diagram of the connection relationship of grinding head drive motor and automatic lifting device;

[0015] Figure 4 It is the schematic diagram of man-machine interface of PLC controller;

[0016] Figure 5 It is the schematic diagram of the control parameter setting of PLC program;

[0017] Figure 6 It is the schematic diagram of PLC program.

[0018] Drawing reference: 1.grinding head drive motor;2.fixed frame;3.PLC controller;4.lifting hydraulic cylinder;5.automatic lifting device;6.grinding head seat;7.transmission wheel fixing device;8.grinding wheel;9.grinding wheel belt. DETAILED DESCRIPTION

[0019] In order to make the embodiment and the advantages of the utility model more clear, the embodiment of the utility model is further explained in detail in the following in combination with the drawings, and obviously, the described embodiment is only a part of the embodiment of the utility model, instead of the exhaustive of all embodiments. It should be noted that the embodiment in the utility model and the features in the embodiment can be combined mutually without conflict.

[0020] In the utility model, unless another definite provision and limitation, the term "connect", "connection" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated; can be mechanical connection, also can be electrical connection; can be directly connected, also can be indirectly connected through the intermediate medium, can be two electrical elements inside or two electrical elements of the interaction relationship. For the person skilled in the art, the above-mentioned term can be understood according to the specific situation in the utility model specific meaning.

[0021] Reference Figures 1-3 Detailed description of the embodiment, a kind of control the device of the automatic lifting of the grinding head of polishing machine, including grinding head drive motor 1, PLC controller 3 and automatic lifting device 5;

[0022] The PLC controller 2 is connected with the grinding head drive motor 1 and the lifting hydraulic cylinder 4 of automatic lifting device 5 respectively, and the grinding head drive motor 1 is connected with the lifting hydraulic cylinder 4 of automatic lifting device 5.

[0023] Further, the automatic lifting device 5 further includes a fixed rack 2, a grinding head seat 6, a transmission wheel fixing device 7, a grinding wheel 8 and a grinding wheel belt 9;

[0024] The grinding head drive motor 1 is connected with the lifting hydraulic cylinder 4 and the support of the grinding head seat 6 respectively, the grinding head drive motor 1 is arranged above the fixed rack 2, the fixed rack 2 is provided with the grinding wheel belt 9, and the fixed rack 2 and the fixed rack 2 are provided with the grinding wheel 8, and the bottom of the grinding wheel 8 is connected with the transmission wheel fixing device 7;

[0025] Specifically, in the embodiment, the PLC controller 3 is arranged in the operation table, the PLC controller 3 selects the Siemens 1200 series PLC controller, the real-time current signal of the grinding head drive motor 1 is collected, the current of the grinding head drive motor 1 is stabilized at a constant value through program control, the purpose of automatically adjusting the lifting of the grinding head is achieved, the operator only needs to adjust the position of the grinding head once, reads the current current value through the man-machine interface operation, automatically adjusts the lifting height of the grinding head through program control, and the working strength of the operator is greatly reduced;

[0026] Reference Figure 4 In the embodiment, the φ26 round is polished, the man-machine interface can display real-time current, set current data, grinding head rising and falling state, current feeding or unloading start-stop state, feeding or unloading cylinder action time;

[0027] The working principle of the device for controlling the automatic lifting of the grinding head of the grinding machine is that: first, after the operator adjusts the grinding wheel 8 by hand to grind a branch, the diameter after grinding is measured by using a micrometer, and after the grinding amount is satisfied, the instantaneous current of the grinding head at this time is set as the set current, the lifting hydraulic cylinder 4 of the grinding head is adjusted through the PLC program, the adjustment time is 1 second lower or higher than 10% of the set current, the lifting hydraulic cylinder 4 is controlled through the PLC program to adjust the upward or downward movement of the grinding head, the adjustment time is 0.25 seconds, the adjustment is stopped when the set current is reached, and the adjustment is performed again after 1 second when the set current is not reached.

[0028] Although the present application has been described in terms of limited embodiments, those skilled in the art will appreciate that other embodiments can be envisaged within the scope of the application as described herein. Furthermore, it should be noted that the language used in the specification has primarily been chosen for readability and instructional purposes and can not have been chosen to convey an exclusive or exhaustive description of the application. Accordingly, many modifications and variations of the present application are possible in light of the above teachings without departing from the scope and spirit of the appended claims. The disclosure of the application is illustrative only and not restrictive of the scope of the application, which is defined by the appended claims.

Claims

1. A device for controlling the automatic lifting of a grinding head of a throw grinder, characterized in that, It comprises a grinding head driving motor (1), a PLC controller (3) and an automatic lifting device (5); The PLC controller (2) is connected with the grinding head driving motor (1) and the lifting hydraulic cylinder (4) of the automatic lifting device (5) respectively, and the grinding head driving motor (1) is connected with the lifting hydraulic cylinder (4) of the automatic lifting device (5).

2. The device for automatically lifting and lowering the grinding head of a polishing machine according to claim 1, wherein The automatic lifting device (5) further comprises a fixed rack (2), a grinding head seat (6), a transmission wheel fixing device (7), a grinding wheel (8) and a grinding wheel belt (9); The grinding head driving motor (1) is connected with the lifting hydraulic cylinder (4) and the support of the grinding head seat (6) respectively, the grinding head driving motor (1) is arranged above the fixed rack (2), the grinding wheel belt (9) is arranged in the fixed rack (2), the fixed rack (2) and the fixed rack (2) are provided with the grinding wheel (8), and the bottom of the grinding wheel (8) is connected with the transmission wheel fixing device (7).

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