Pressure testing device of injection mold

Abstract

The utility model discloses a pressure testing device of an injection mold, which comprises a bottom plate, a fixing block is arranged at the center of the upper surface of the bottom plate, an inserting groove is arranged on the upper surface of the fixing block, a groove is arranged at the bottom in the inserting groove, and one side of the fixing block is communicated with a first connecting pipe communicated with the groove. A plurality of supporting rods are installed on the upper surface of the bottom plate, a supporting plate is installed at the ends, away from the bottom plate, of the supporting rods, a hydraulic rod is installed on the upper surface of the supporting plate, an exhaust part is installed at the movable end of the hydraulic rod, and a second connecting pipe communicated with the output end of the pressurizing equipment is installed in the exhaust part. According to the utility model, the to-be-tested injection mold is used for plugging the groove, and then the groove is communicated with the input end of the pressurizing equipment through the first connecting pipe, so that when the pressurizing equipment inflates air into the to-be-tested injection mold, negative pressure is gradually generated in the groove, and the to-be-tested injection mold is adsorbed by utilizing the negative pressure; therefore, the exhaust pipe can be conveniently separated from the to-be-tested injection mold.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of pressure testing, and specifically relates to a pressure testing device for an injection mold. Background Technique

[0002] After the injection molding is completed, multiple injection molds need to be welded together to form a usable whole mold. In order to ensure good airtightness of the welding of multiple injection molds, it is necessary to conduct a pressure test on the injection mold.

[0003] When conducting a pressure test on an injection mold, an exhaust pipe needs to be inserted into the injection mold, and then a pressurizing device is used to pressurize the inside of the injection mold. After the pressurization is completed, the exhaust pipe is removed from the injection mold.

[0004] Since it is necessary to ensure a tight fit between the exhaust pipe and the injection mold during the pressure test, when the exhaust pipe is removed from the injection mold, it is easy to move the injection mold together, resulting in the need for manual separation of the injection mold and the exhaust pipe. Therefore, a new pressure testing device for an injection mold is needed. Summary of the Utility Model

[0005] The technical solution of the utility model aims at the technical problem that the existing technical solution is too single, and provides a solution significantly different from the existing technology. It mainly provides a pressure testing device for an injection mold to solve the technical problem that when the exhaust pipe is removed from the injection mold, it is easy to move the injection mold together, resulting in the need for manual separation of the injection mold and the exhaust pipe as mentioned in the above background technique.

[0006] The technical solution adopted by the utility model to solve the above technical problems is as follows:

[0007] A pressure testing device for an injection mold includes a bottom plate. A fixed block is installed at the center of the upper surface of the bottom plate. A slot for placing the injection mold to be tested is opened on the upper surface of the fixed block. A groove is opened at the bottom of the slot. An adjusting member is slidably connected in the groove. One side of the fixed block is communicated with a first connecting pipe that is communicated with the groove. The end of the first connecting pipe away from the fixed block is communicated with the input end of a pressurizing device. A plurality of support rods are installed on the upper surface of the bottom plate. A support plate is installed at the end of the support rod away from the bottom plate. A hydraulic rod is installed on the upper surface of the support plate. An exhaust member is installed at the movable end of the hydraulic rod. A second connecting pipe communicated with the output end of the pressurizing device is installed in the exhaust member. The exhaust member is located directly above the injection mold to be tested.

[0008] Preferably, the adjusting member includes a piston. The piston is slidably connected in the groove. A bearing is installed on the surface of the piston facing the inside of the groove. A screw rod is installed in the bearing. A threaded hole extending into the groove is opened on the lower surface of the bottom plate. The screw rod is threadedly connected in the threaded hole.

[0009] Preferably, a knob is installed at one end of the screw rod away from the bearing.

[0010] Preferably, the exhaust member includes a connecting plate which is installed at the movable end of the hydraulic rod. An air chamber is formed in the connecting plate. A second connecting pipe communicating with the output end of the pressurizing device is installed on the side surface of the connecting plate. A plurality of exhaust pipes communicating with the air chamber are installed on the lower surface of the connecting plate. Sealing gaskets are installed on the circumferential surface of the exhaust pipes. The exhaust pipes are located directly above the injection mold to be tested.

[0011] Preferably, a through groove is formed in the side surface of the fixed block. An L-shaped groove communicating with the through groove is formed on the upper surface of the fixed block. An L-shaped plate is inserted into the L-shaped groove. The vertical portion of the L-shaped plate extends outside the L-shaped groove. An elastic member is installed on the horizontal portion of the L-shaped plate. The end of the elastic member away from the L-shaped plate is installed in the L-shaped groove.

[0012] Preferably, a sealing ring is installed in the slot and is in contact with the injection mold to be tested.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. By forming a groove in the slot, then using the injection mold to be tested to block the groove, and then connecting the groove to the input end of the pressurizing device through the first connecting pipe. When the pressurizing device fills air into the injection mold to be tested, negative pressure gradually generates in the groove, and the negative pressure is used to adsorb the injection mold to be tested, so as to facilitate the separation of the exhaust pipe from the injection mold to be tested.

[0015] 2. By slidably connecting an adjusting structure composed of a piston, a bearing and a screw rod in the groove, the size of the space in the groove is adjusted by using the adjusting structure, so as to facilitate the pressurizing device to extract different amounts of air when pressurizing injection molds to be tested with different depths.

[0016] The following will explain and illustrate the present utility model in detail in combination with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional schematic diagram of the present utility model;

[0018] Figure 2 is a cross-sectional view of the fixed block of the present utility model;

[0019] Figure 3 is an assembly schematic diagram of the connecting plate and the exhaust pipe of the present utility model.

[0020] In the figure, reference numeral 1 is the bottom plate; 2 is the fixed block; 3 is the support rod; 4 is the support plate; 5 is the hydraulic rod; 6 is the connecting plate; 7 is the first connecting pipe; 8 is the piston; 9 is the bearing; 10 is the knob; 11 is the screw rod; 12 is the through groove; 13 is the L-shaped plate; 14 is the elastic member; 15 is the gasket; 16 is the exhaust pipe; 17 is the sealing ring; 18 is the second connecting pipe. Detailed implementation manners

[0021] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present utility model are given in the drawings. However, the present utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

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

[0024] Please refer specifically to the attached Figures 1-3 A pressure testing device for an injection mold, comprising a bottom plate 1. A fixed block 2 is installed at the center of the upper surface of the bottom plate 1. A slot for placing the injection mold to be tested is opened on the upper surface of the fixed block 2. A groove is further opened at the bottom of the slot. A first connecting pipe 7 communicating with the groove is connected to one side of the fixed block 2. The end of the first connecting pipe 7 away from the fixed block 2 communicates with the input end of the pressurizing device. A plurality of support rods 3 are installed on the upper surface of the bottom plate 1. A support plate 4 is installed at the end of the support rod 3 away from the bottom plate 1. A hydraulic rod 5 is installed on the upper surface of the support plate 4. A connecting plate 6 is installed at the movable end of the hydraulic rod 5. An air chamber is opened in the connecting plate 6. A second connecting pipe 18 connected to the output end of the pressurizing device is installed on the side surface of the connecting plate 6. A plurality of exhaust pipes 16 communicating with the air chamber are installed on the lower surface of the connecting plate 6. A gasket 15 is installed on the circumferential surface of the exhaust pipe 16. The exhaust pipe 16 is located directly above the injection mold to be tested. When the movable end of the hydraulic rod 5 extends, the exhaust pipe 16 can be extended into the injection mold to be tested.

[0025] By opening a groove in the slot, then using the injection mold to be tested to block the groove, and then connecting the groove to the input end of the pressurizing device through the first connecting pipe 7. When the pressurizing device fills the injection mold to be tested with air, negative pressure gradually generates in the groove, and the negative pressure is used to adsorb the injection mold to be tested, so as to facilitate the separation of the exhaust pipe 16 from the injection mold to be tested.

[0026] A piston 8 is slidably connected in the groove. A bearing 9 is installed on the side of the piston 8 facing the inside of the groove. A screw rod 11 is installed in the bearing 9. Then a threaded hole extending into the groove is opened on the lower surface of the bottom plate 1, and the screw rod 11 is threadedly connected in the threaded hole.

[0027] To facilitate the introduction of air into the groove, a through groove 12 is opened on the side of the fixed block 2, and an L-shaped groove communicating with the through groove 12 is opened on the upper surface of the fixed block 2. An L-shaped plate 13 is inserted into the L-shaped groove. The vertical part of the L-shaped plate 13 extends outside the L-shaped groove. An elastic member 14 is installed on the horizontal part of the L-shaped plate 13. The elastic member 14 is a spring. The elastic member 14 is in a normal state, and the end of the elastic member 14 away from the L-shaped plate 13 is installed in the L-shaped groove.

[0028] By slidably connecting an adjusting structure composed of a piston 8, a bearing 9 and a screw rod 11 in the groove, the size of the space in the groove is adjusted by using the adjusting structure, so as to facilitate the pressurizing device to extract different amounts of air when pressurizing injection molds to be tested with different depths.

[0029] To facilitate the rotation of the screw rod 11, a knob 10 is installed at the end of the screw rod 11 away from the bearing 9.

[0030] To ensure the sealing of the space in the groove, a sealing ring 17 is installed in the slot, and the sealing ring 17 is in contact with the injection mold to be tested.

[0031] The specific operation process of this utility model is as follows: The connecting plate 6 is moved towards the fixed block 2 by the extension of the movable end of the hydraulic rod 5. When the connecting plate 6 moves towards the fixed block 2, the exhaust pipe 16 is inserted into the injection mold to be tested and contacts the L-shaped plate 13, causing the L-shaped plate 13 to move downward to block the through groove 12 and making the elastic member 14 in a stretched state. Subsequently, the pressurizing device is started to convey air from the air in the groove into the injection mold to be tested to conduct a pressure test on the injection mold to be tested, and to detect whether the airtightness of the injection mold is qualified.

[0032] After the detection is completed, the exhaust pipe 16 is pulled out from the injection mold to be tested. Since the air in the groove is pumped away by the pressurizing device, the inside of the groove is in a negative pressure state, thereby adsorbing the injection mold to be tested and facilitating the separation of the exhaust pipe 16 from the injection mold to be tested. When the connecting plate 6 is separated from the L-shaped plate 13, the L-shaped plate 13 moves upward under the pull of the elastic member 14, reopening the groove and introducing air into the groove through the through groove 12 to balance the air pressure in the groove, facilitating the removal of the injection mold to be tested from the slot.

[0033] The above has given an exemplary description of the present utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the present utility model is not limited by the above-mentioned manner. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present utility model, or the concept and technical solution of the present utility model are directly applied to other occasions without improvement, they are all within the protection scope of the present utility model.

Claims

1. A pressure testing device for an injection mold, comprising a base plate (1), characterized in that: A fixed block (2) is installed at the center of the upper surface of the base plate (1), and a slot for placing the injection mold to be tested is provided on the upper surface of the fixed block (2), and a groove is provided at the bottom of the slot, and an adjusting member is slidably connected in the groove. A first connecting pipe (7) communicating with the groove is connected to one side of the fixed block (2), and an end of the first connecting pipe (7) away from the fixed block (2) is connected to an input end of a pressurizing device. A plurality of support rods (3) are installed on the upper surface of the base plate (1), and a support plate (4) is installed at one end of the support rod (3) away from the base plate (1). A hydraulic rod (5) is installed on the upper surface of the support plate (4), and an exhaust member is installed at the movable end of the hydraulic rod (5). A second connecting pipe (18) communicating with an output end of the pressurizing device is installed in the exhaust member, and the exhaust member is located directly above the injection mold to be tested.

2. A pressure testing device for injection mold according to claim 1, characterized in that: The adjusting member comprises a piston (8), the piston (8) being slidably connected in the groove, a bearing (9) being mounted on a side of the piston (8) facing the groove, a screw rod (11) being mounted in the bearing (9), a threaded hole extending into the groove being formed on the lower surface of the base plate (1), and the screw rod (11) being threadedly connected in the threaded hole.

3. A pressure testing device for an injection mold according to claim 2, characterized in that: A knob (10) is mounted on one end of the screw rod (11) away from the bearing (9).

4. The pressure testing device for injection mold according to claim 1, characterized in that: The exhaust component comprises a connecting plate (6), the connecting plate (6) being mounted on the movable end of the hydraulic rod (5), an air chamber being provided in the connecting plate (6), a second connecting pipe (18) being mounted on the side of the connecting plate (6) and being connected to the output end of the pressurizing device, a plurality of exhaust pipes (16) being mounted on the lower surface of the connecting plate (6) and being connected to the air chamber, a sealing gasket (15) being mounted on the annular surface of the exhaust pipe (16), and the exhaust pipe (16) being located directly above the injection mold to be tested.

5. A pressure testing device for an injection mold according to claim 4, characterized in that: A through slot (12) is formed on the side of the fixing block (2); an L-shaped slot communicating with the through slot (12) is formed on the upper surface of the fixing block (2); an L-shaped plate (13) is inserted into the L-shaped slot; a vertical portion of the L-shaped plate (13) extends outside the L-shaped slot; an elastic member (14) is installed on the horizontal portion of the L-shaped plate (13); an end of the elastic member (14) away from the L-shaped plate (13) is installed in the L-shaped slot.

6. The pressure testing device for injection mold according to claim 1, characterized in that: A sealing ring (17) is installed in the slot, and the sealing ring (17) is in contact with the injection mold to be tested.

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