Pneumatic mold locking device

Abstract

The utility model discloses a pneumatic mould locking device, which is mounted on a foaming mould base bottom plate and comprises a pneumatic control system and an air bag component arranged between a mould mounting plate and the foaming mould base bottom plate. The pneumatic control system comprises an air source processing unit, a quick exhaust valve and an electromagnetic control valve electrically connected with the air source processing unit, the air bag assembly is connected with an air outlet of the electromagnetic control valve and the quick exhaust valve, and the air source processing unit is connected with an air compressor. The upper die and the lower die of the die are separated and closed through cooperation of the air bag assembly and the pneumatic control system. According to the utility model, a set of pneumatic control system is matched with the air bag, and compressed air is supplied and exhausted, so that the air bag is inflated and exhausted, the air bag is expanded and compressed and acts on the surface of a template for fixing a mold, the mold locking action is completed, and the requirement on the machining precision of the mold and a mold frame is reduced.

Description

Technical Field

[0001] The utility model relates to the field of mechanical mold locking, in particular to a pneumatic mold locking device. Background Art

[0002] In recent years, with the rapid development of industrial automation, more and more companies have higher and higher requirements for the degree of automation and sustainable development of equipment. Therefore, many companies now require multiple molds for one device. On this basis, how to design a clamping device with high safety, strong versatility and large-scale use has become a major problem that equipment suppliers need to solve urgently.

[0003] There are many types of clamping units on the market, such as hydraulic clamps, ball-type pneumatic locks and mechanical lock pins. Among them, the hydraulic clamps have high production costs and high future maintenance costs. The ball-type clamping unit is difficult to produce and is not suitable for use under heavy loads. The use environment is very restricted. For mechanical lock pins, mold frames and molds, the processing accuracy and matching accuracy are very high. Once the mold is not completely locked, it is easy to produce product flash, resulting in additional trimming work and even waste. Therefore, the existing technology needs to be improved. Utility Model Content

[0004] The present application provides a pneumatic mold locking device, which is used to solve the problems of poor mold closing effect, easy overflow and product flash in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A pneumatic locking device is installed on the bottom plate of a foaming mold frame, and includes a pneumatic control system and an air bag assembly. The air bag assembly is arranged between the mold mounting plate and the bottom plate of the foaming mold frame. The pneumatic control system includes an air source processing unit, a quick exhaust valve, and an electromagnetic control valve electrically connected to the air source processing unit. The air bag assembly is respectively connected to the air outlet and the quick exhaust valve of the electromagnetic control valve. The air source processing unit is connected to an air compressor. The upper and lower molds of the mold are separated and closed through the cooperation of the air bag assembly and the pneumatic control system.

[0007] Furthermore, the air bag assembly includes a plurality of identical air bags, each of which is provided with through holes at both ends and is fixed to the mold frame bottom plate by bolts.

[0008] Furthermore, steel clamping plates are provided at both ends of the air bag, and screw holes corresponding to the through holes are opened on the steel clamping plates. The air bag is tightened by the steel clamping plates and then fixed to the mold frame bottom plate by the bolts.

[0009] Furthermore, an air hole is provided in the middle of the air bag, and compressed air is injected and discharged through the air hole.

[0010] Furthermore, the pneumatic control system is also provided with a safety valve, and the safety valve is connected to the air source processing unit.

[0011] Furthermore, the pneumatic control system also includes a pressure sensor, and the pressure sensor is control-connected to the air source processing unit.

[0012] Furthermore, the air bag is made by cutting a fire water bag.

[0013] The utility model has the following beneficial effects due to the use of the above technical solution:

[0014] The pneumatic mold clamping device of the utility model has a compact structure and is easy to use. Through the cooperation of a pneumatic control system and an air bag, the air bag is inflated and exhausted through the supply and exhaust of compressed air, thereby expanding and compressing, and acting on the mold surface of the fixed mold to complete the mold clamping action. The requirements for the processing accuracy of the mold and the mold frame are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional structural schematic diagram of a pneumatic clamping device of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of an air bag assembly in a pneumatic mold locking device of the utility model;

[0017] Figure 3 , Figure 4 This is a structural diagram of a pneumatic control system in a pneumatic mold locking device of the utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the air bag end portion in a pneumatic mold locking device of the utility model;

[0019] Figure 6 It is a schematic diagram of the upper and lower molds of the mold when they are separated in the embodiment of the utility model;

[0020] Figure 7 It is a schematic diagram of the upper and lower molds of the mold in the embodiment of the utility model when they are closed;

[0021] Figure 8 This is a pneumatic principle diagram of a pneumatic control system in a pneumatic mold locking device of the utility model;

[0022] Fig. 9 This is a working principle diagram of an air source processing unit in a pneumatic clamping device of the utility model;

[0023] Fig.10 This is a working principle diagram of an electromagnetic control valve in a pneumatic mold locking device of the utility model;

[0024] Fig.11 The utility model is a working principle diagram of air bag air intake in a pneumatic clamping device.

[0025] The reference numerals in the accompanying drawings of the specification are as follows:

[0026] Air bag assembly 1, mold mounting plate 4, foaming mold frame bottom plate 5, air source processing unit 6, electromagnetic control valve 7, quick exhaust valve 8, safety valve 9, bolt 10, steel clamping plate 20, air bag 11, air hole 91. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the utility model easier to understand, the utility model is further described below in conjunction with specific embodiments and drawings.

[0028] like Figures 1 to 4 As shown, the first embodiment of the utility model provides a pneumatic clamping device, which is installed on the bottom plate 5 of the foaming mold frame, and includes a pneumatic control system and an air bag assembly 1. The air bag assembly 1 is arranged between the mold mounting plate 4 and the bottom plate 5 of the foaming mold frame. The pneumatic control system includes an air source processing unit 6, a quick exhaust valve 8, and an electromagnetic control valve 7 electrically connected to the air source processing unit 6. The air bag assembly 1 is connected to the air outlet of the electromagnetic control valve 7 and the quick exhaust valve 8 respectively. The air source processing unit 6 is connected to the air compressor. The upper and lower molds of the mold are separated and closed by the cooperation of the air bag assembly 1 and the pneumatic control system.

[0029] Specifically, combined with Figure 5 As shown, the airbag assembly 1 includes a plurality of identical airbags 11, which can be made by cutting fire water bags and are evenly arranged adjacent to each other. Adjacent airbags 11 are not connected to each other. Arranging a plurality of airbags 11 improves the overall bearing capacity and also avoids that when one or more airbags are damaged, other airbags 11 can still be used, thereby improving the overall service life; and each airbag 11 is provided with through holes (not shown in the figure) at both ends, and is fixed to the mold base plate 5 by bolts 10. Steel clamps 20 may also be provided at both ends of the airbag 11, and screw holes corresponding to the through holes are provided on the steel clamps 20 (not shown in the figure). The airbag 11 is fixed to the foaming mold base plate 5 by bolts after being tightened by the steel clamps 20.

[0030] In addition, combined with Figure 2 As shown, an air hole 91 is also provided in the middle of the air bag 11 , and one or more air holes may be provided. The air hole 91 is connected to the air inlet of the electromagnetic control valve 7 , and compressed air is injected and discharged through the air hole 91 .

[0031] What’s more, if Figure 3As shown, the pneumatic control system is also provided with a safety valve 9 and / or a pressure sensor (not shown in the figure). The safety valve 9 and the pressure sensor are electrically connected to the gas source processing unit 6 respectively. When the system pressure exceeds the specified value, the safety valve 9 opens to discharge part of the gas in the system into the atmosphere so that the system pressure does not exceed the allowable value. The pressure sensor also detects the system pressure to ensure that the system does not cause accidents due to excessive pressure.

[0032] In specific use, such as Figures 1 to 7 As shown, when mold locking is required, the control system sends a signal to the electromagnetic control valve 7, the valve core moves, and the compressed air is processed by the air source processing unit 6 and enters the air bag 11 (such as Figures 8 to 11 As shown), the air bag 11 is inflated to lift the template, and a clamping force is generated between the upper and lower molds of the mold to form a clamping function. Due to the joint action of the air bag 11 and the compressed air, it has a certain size compensation, which can be used to compensate for the unevenness of the fit between the mold and the template. When the mold needs to be opened, the control system gives the electromagnetic control valve 7 a reverse signal, and the valve core moves in the reverse direction. The compressed air will squeeze out the air in the air bag 11 under the action of the mold's own weight and discharge it into the atmosphere through the quick exhaust valve 8. At this time, the upper and lower molds of the mold are separated. When the mold needs to be locked again, repeat the above operation.

[0033] In summary, the pneumatic mold locking device of the utility model has a compact structure and is easy to use. Through a set of pneumatic control systems and the cooperation of the air bag 11, the air bag 11 is inflated and exhausted through the supply and exhaust of compressed air, thereby expanding and compressing, and acting on the template surface of the fixed mold to complete the mold locking action. It solves the problems of poor mold closing effect in the prior art, easy to produce overflow and product flash, reduces the requirements for the processing accuracy of the mold and mold frame, and has high practical value.

[0034] The above describes the specific embodiments of the utility model. It should be understood that the utility model is not limited to the above specific embodiments, and the devices and structures not described in detail should be understood to be implemented in a common manner in the art; those skilled in the art can make various modifications or modifications within the scope of the claims to make some simple deductions, deformations or substitutions, which does not affect the substantive content of the utility model.

Claims

1. A pneumatic clamping device, characterized in that: The device is installed on the bottom plate of the foaming mold frame, and includes a pneumatic control system and an air bag component. The air bag component is arranged between the mold mounting plate and the bottom plate of the foaming mold frame. The pneumatic control system includes an air source processing unit, a quick exhaust valve, and an electromagnetic control valve electrically connected to the air source processing unit. The air bag component is respectively connected to the air outlet of the electromagnetic control valve and the quick exhaust valve. The air source processing unit is connected to an air compressor. The upper and lower molds of the mold are separated and closed through the cooperation of the air bag component and the pneumatic control system.

2. The pneumatic clamping device according to claim 1, characterized in that: The air bag assembly comprises a plurality of identical air bags, each of which is provided with through holes at both ends and is fixed to the mold frame bottom plate by bolts.

3. The pneumatic clamping device according to claim 2 is characterized in that: Steel clamping plates are provided at both ends of the air bag, and screw holes corresponding to the through holes are opened on the steel clamping plates. The air bag is tightened by the steel clamping plates and fixed to the mold frame bottom plate by the bolts.

4. The pneumatic clamping device according to claim 2, characterized in that: An air hole is arranged in the middle of the air bag, and compressed air is injected and discharged through the air hole.

5. The pneumatic clamping device according to claim 1, characterized in that: The pneumatic control system is also provided with a safety valve, and the safety valve is connected to the air source processing unit.

6. The pneumatic clamping device according to claim 1, characterized in that: The pneumatic control system further comprises a pressure sensor, and the pressure sensor is control-connected to the air source processing unit.

7. The pneumatic clamping device according to any one of claims 1 to 6, characterized in that: The air bag is made by cutting a fire-fighting water bag.

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