Blister cutting device

Abstract

The utility model discloses a kind of blister cutting devices, belong to blister processing equipment technical field, the device includes shell, electric slide rail, cutting assembly and adsorption component, cutting assembly is rotated as a whole by servo motor drive support frame, cooperation limit shaft realizes stable angle adjustment, inclination sensor real-time monitoring rotation angle, hydraulic cylinder on support frame drives cutting-off knife to carry out vertical cutting, and utilize distance measurer accurate control press-in deep. Adsorption component is monitored workpiece pressure by pressure sensor, and control electric switch adjusts adsorption degree. The utility model is fixed by lossless stable of workpiece by pressure feedback, by the combination of angle rotation and depth monitoring, high-precision, multi-dimensional cutting operation is realized, and the processing quality and efficiency of complex blister product are significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of thermoforming equipment technology, and in particular to a thermoforming cutting device. Background Technology

[0002] Vacuum forming cutting equipment is a common piece of equipment in the plastic product processing industry. It is mainly used to cut large sheets of material after vacuum forming, separating them into individual finished products. As the manufacturing industry continues to demand higher product precision and production efficiency, higher requirements are also being placed on the performance of vacuum forming cutting equipment.

[0003] In current production practices, the fixing of thermoformed parts typically relies on vacuum adsorption platforms. However, traditional adsorption platforms often operate with a constant adsorption force. This fixing method reveals significant shortcomings when dealing with thermoformed parts of varying materials, thicknesses, and shapes. For example, for thinner or more fragile workpieces, excessive adsorption force can easily cause indentations, stretching deformation, or even breakage on the workpiece surface; while for heavier or uneven workpieces, the fixed adsorption force may not be sufficient to provide a firm grip, causing the workpiece to shift during the cutting process and severely affecting cutting accuracy.

[0004] Furthermore, traditional cutting mechanisms have a single dimension of movement for their cutting blades, typically limited to simple linear movement. This design restricts the equipment's ability to handle complex curved surfaces or multi-angle cutting tasks. When precise control of cutting depth and multi-angle cutting is required, existing equipment often necessitates complex and low-precision mechanical adjustments, resulting in limitations on cutting accuracy and flexibility. The issues of unstable workpiece fixation and the single cutting dimension interact, jointly causing significant bottlenecks in the processing accuracy, product yield, and functional versatility of existing vacuum forming cutting devices.

[0005] Therefore, this utility model proposes a vacuum forming and cutting device to overcome the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a vacuum forming cutting device, which aims to improve the problems in the prior art, such as the difficulty in accurately controlling the workpiece adsorption force, which leads to workpiece damage or displacement, as well as the insufficient accuracy of cutting depth and angle adjustment, and the inability to adapt to complex cutting paths.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a vacuum forming cutting device, comprising a housing, a cutting component and an adsorption component disposed on the housing, and an electric slide rail slidably connected to the bottom of the housing;

[0008] The cutting assembly includes a servo motor fixed to the top of the housing, the output end of which drives a support frame. A limit shaft is provided on the support frame, and the limit shaft rotatably engages with the housing to assist the support frame in rotating. A hydraulic cylinder is fixedly mounted on the support frame, the output end of which is connected to a first support plate. A cutting blade is fixedly connected to the bottom of the first support plate. The cutting assembly also includes an angle sensor mounted on the support frame and a distance measuring device mounted on the hydraulic cylinder for monitoring the extension length of the cutting blade.

[0009] Furthermore, the adsorption assembly includes an adsorption platform and a pressure sensor disposed on the top of the housing; the adsorption assembly also includes a vacuum pump connected to the adsorption platform via a connecting pipe, and an electric switch connected to the pressure sensor to adjust the on / off state of the connecting pipe or the flow rate.

[0010] Preferably, the servo motor is vertically fixed to the top side of the housing, and the limiting shaft is located on the side of the support frame away from the servo motor;

[0011] Preferably, the first support plate is fixedly connected to the output end of the hydraulic cylinder via a flange;

[0012] Preferably, the sensing end of the tilt sensor is engaged with the rotation axis of the support frame to monitor the rotation angle of the support frame in real time.

[0013] Preferably, the distance measuring device is a laser rangefinder or a linear displacement sensor, which is fixed on the inner wall of the support frame;

[0014] Preferably, the top surface of the adsorption platform has uniformly distributed air intake holes, and the pressure sensor is embedded in multiple preset positions inside the adsorption platform.

[0015] Preferably, the electric switch is a proportional valve, which is installed on the connecting pipe and used to control the on / off state of the connecting pipe.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model solves the problem in the prior art that the cutting depth is not accurate due to mechanical limit or time control, and is easy to damage the bottom mold or not cut through the workpiece. By adding a distance measuring device to the hydraulic cylinder and cooperating with the control system, it achieves the technical effect of real-time accurate monitoring of the cutting depth of the cutting blade and realizing high-precision fixed-depth cutting.

[0018] 2. This utility model uses a servo motor to drive the support frame to rotate as a whole, and forms a double-point support structure with the help of the limiting shaft. This solves the problems of poor rigidity of the cutting angle adjustment mechanism and easy vibration during rotation that leads to uneven cutting edges in the prior art. It achieves the technical effect of significantly improving the overall structural rigidity and operational stability of the cutting component while ensuring the flexibility of large-angle adjustment.

[0019] 3. This utility model solves the problem in the prior art that the constant adsorption force cannot adapt to workpieces of different strengths, which can easily cause deformation of thin-walled parts or insecure fixation of heavy parts by working in concert with pressure sensor, electric switch and vacuum pump. It achieves the technical effect of intelligently adjusting adsorption force according to real-time pressure feedback of workpiece to ensure that workpiece is fixed firmly and without damage. Attached Figure Description

[0020] Figure 1 This is a perspective view of a vacuum forming and cutting device proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the top structure of the electric slide rail of the vacuum forming cutting device proposed in this utility model;

[0022] Figure 3 This is a schematic diagram of the top structure of the outer shell of a vacuum forming cutting device proposed in this utility model;

[0023] Figure 4 This is a schematic diagram of the inner wall structure of the outer shell of the vacuum forming cutting device proposed in this utility model;

[0024] Figure 5 This is a schematic diagram of the top structure of the adsorption platform of a vacuum forming and cutting device proposed in this utility model.

[0025] Legend:

[0026] 1. Housing; 2. Electric slide rail; 3. Cutting assembly; 301. Servo motor; 302. Support frame; 303. Limiting shaft; 304. First support plate; 305. Cutting blade; 306. Hydraulic cylinder; 307. Tilt sensor; 308. Distance measuring device; 4. Adsorption assembly; 401. Vacuum pump; 402. Connecting pipe; 403. Electric switch; 404. Pressure sensor; 405. Adsorption platform. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Reference Figures 1-5 The present invention provides an embodiment of a vacuum forming cutting device, comprising a housing 1, and a cutting component 3 and an adsorption component 4 disposed on the housing 1. An electric slide rail 2 is slidably connected to the bottom of the housing 1 for driving the entire device to move at the work station.

[0029] The adsorption assembly 4 is used to fix the workpiece. It includes an adsorption platform 405 disposed on the top of the housing 1. A pressure sensor 404 is embedded in the top of the adsorption platform 405 to obtain the pressure distribution information of the workpiece on the adsorption platform 405. A vacuum pump 401 is connected to the adsorption platform 405 through a connecting pipe 402 to provide negative pressure. An electric switch 403 is disposed on the connecting pipe 402. The electric switch 403 is connected to the pressure sensor 404 to adjust the adsorption force according to the pressure feedback.

[0030] To address the issues of cutting accuracy and dimensionality, the cutting assembly 3 includes a servo motor 301, which is fixedly mounted on the top side of the housing 1. The output of the servo motor 301 drives a gantry-type support frame 302. To ensure the stability of the support frame 302 during rotation, a limiting shaft 303 is provided on the side of the support frame 302 away from the servo motor 301. This limiting shaft 303 rotates with the housing 1, thus forming a double-point supported rotational structure together with the rotating shaft of the servo motor 301.

[0031] A hydraulic cylinder 306 is fixedly installed on the crossbeam of the support frame 302. The output end of the hydraulic cylinder 306 points vertically downward and is fixedly connected to the first support plate 304 via a flange. A cutting blade 305 is fixedly installed at the bottom of the first support plate 304. This structure allows the cutting blade 305 to move vertically with the hydraulic cylinder 306 and to rotate with the support frame 302.

[0032] To achieve closed-loop precise control, an inclination sensor 307 is provided on the support frame 302 to monitor the rotation angle of the support frame 302 in real time. At the same time, the inner wall of the support frame 302 is fixedly provided on the outer wall of the distance measuring device 308. The probe of the distance measuring device 308 points to the cutting blade 305 to monitor the downward extension length of the cutting blade 305 in real time.

[0033] As a preferred embodiment, in order to achieve precise control of the adsorption gas path, the electric switch 403 is selected as a proportional valve, which can continuously adjust the valve opening according to the electrical signal, thereby realizing stepless adjustment of the flow rate of the connecting pipe 402.

[0034] As another preferred embodiment, in order to improve the ranging accuracy, the distance measuring device 308 is preferably a laser displacement sensor, which has the characteristics of non-contact, fast response speed and high accuracy.

[0035] As another preferred embodiment, the surface of the adsorption platform 405 is densely covered with suction holes, and the pressure sensors 404 are evenly distributed in different areas of the platform to ensure that the stress conditions of workpieces of different sizes can be detected.

[0036] Working principle: During processing, the workpiece to be processed is first placed on the adsorption platform 405 of the adsorption component 4. At this time, the pressure sensor 404 embedded in the adsorption platform 405 collects the pressure data applied by the workpiece to the platform in real time and transmits this information to the control system. According to the pressure distribution, the control system instructs the electric switch 403 to adjust the opening degree of the connecting pipe 402. With the help of the negative pressure source provided by the external vacuum pump 401, the adsorption force acting on the surface of the workpiece is precisely controlled, ensuring that the workpiece does not shift during subsequent processing and preventing indentations from forming on the surface of the workpiece due to excessive suction.

[0037] After the workpiece is fixed, the cutting operation begins. The servo motor 301 receives the control command and starts, driving the support frame 302 to rotate around the vertical axis. The support frame 302 drives the limiting shaft 303 on the side wall to rotate within the support structure of the outer shell 1. At the same time, it drives the hydraulic cylinder 306 installed inside the support frame 302 and the cutting blade 305 at the bottom to deflect synchronously. During this process, the tilt sensor 307 monitors the angle changes of the support frame 302 and the cutting blade 305 in real time and provides feedback until the preset cutting angle is reached.

[0038] Subsequently, the hydraulic cylinder 306 actuates, driving the cutting blade 305 to extend downwards and contact the workpiece for cutting. A distance measuring device 308, installed on the inner wall of the support frame 302, monitors the extension length of the cutting blade 305 in real time. When the preset cutting depth is reached, the system controls the hydraulic cylinder 306 to stop and retract, thus completing a high-precision fixed-depth cut. During processing, the electric slide rail 2 can move the outer casing 1 and all components to different workstation areas as needed.

Claims

1. A vacuum forming and cutting device, characterized in that, include: Outer shell (1); A cutting component (3) and an adsorption component (4) are disposed on the outer shell (1); Electric slide rail (2), which is slidably connected to the underside of the housing (1); The cutting component (3) includes a servo motor (301) and a tilt sensor (307). The servo motor (301) is fixed to the top of the housing (1). The output end of the servo motor (301) is connected to a support frame (302). A limit shaft (303) is provided on the support frame (302). The limit shaft (303) is rotatably engaged with the housing (1) to assist the support frame (302) in rotating. A hydraulic cylinder (306) is fixedly installed on the support frame (302). The output end of the hydraulic cylinder (306) is connected to a first support plate (304). A cutting blade (305) is fixedly connected to the bottom of the first support plate (304). The tilt sensor (307) is mounted on the support frame (302), and the distance measuring device (308) is mounted on the hydraulic cylinder (306) for monitoring the extension length of the cutting blade (305). The adsorption assembly (4) includes an adsorption platform (405), a pressure sensor (404), a vacuum pump (401), and an electric switch (403). The adsorption platform (405) and the pressure sensor (404) are located on the top of the housing (1). The vacuum pump (401) is connected to the adsorption platform (405) through the connecting pipe (402), and the electric switch (403) is connected to the pressure sensor (404) to adjust the on / off state of the connecting pipe (402) or the flow rate.

2. The vacuum forming cutting device according to claim 1, characterized in that: The servo motor (301) is vertically fixed to the top side of the housing (1).

3. The vacuum forming cutting device according to claim 1, characterized in that: The limiting shaft (303) is located on the side of the support frame (302) away from the servo motor (301).

4. The vacuum forming cutting device according to claim 1, characterized in that: The first support plate (304) is fixedly connected to the output end of the hydraulic cylinder (306) via a flange.

5. The vacuum forming cutting device according to claim 1, characterized in that: The sensing end of the tilt sensor (307) is engaged with the rotation axis of the support frame (302) to monitor the rotation angle of the support frame (302) in real time.

6. The vacuum forming cutting device according to claim 1, characterized in that: The distance measuring device (308) is a laser rangefinder or a linear displacement sensor, which is fixed on the inner wall of the support frame (302).

7. The vacuum forming cutting device according to claim 1, characterized in that: The top surface of the adsorption platform (405) has uniformly distributed air intake holes, and the pressure sensor (404) is embedded in multiple preset positions inside the adsorption platform (405).

8. The vacuum forming cutting device according to claim 1, characterized in that: The electric switch (403) is a proportional valve, which is installed on the connecting pipe (402) and is used to control the opening and closing of the connecting pipe (402).

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