Quick die changing device special for air tightness detection equipment

Abstract

The invention relates to a quick die changing device special for air tightness detection equipment, which comprises a die, an air tightness detection mechanism, a fixing mechanism and a base, the air tightness detection mechanism and the fixing mechanism are arranged on the base, and the die is provided with a detection groove for placing an object to be detected. The air tightness detection mechanism is used for sealing the detection groove and inflating or deflating the detection groove, the fixing mechanism comprises a supporting seat, two propelling assemblies and two fixing assemblies, the supporting seat is movably arranged on the base, and the mold is placed on the supporting seat; the two propelling assemblies are arranged on the two sides of the bottom of the supporting base correspondingly and can drive the supporting base to move upwards. The two fixing assemblies are arranged on the two sides of the edge of the top of the supporting base correspondingly and can fix a mold on the supporting base. When the pushing assembly drives the supporting base to move upwards, the pushing assembly drives the fixing assembly to move in the direction away from the mold at the same time so that the mold can be loosened. When the propelling assembly moves in the direction away from the supporting base, the supporting base moves downwards by means of the gravity of the supporting base, and the propelling assembly drives the fixing assembly to fix the mold at the same time. According to the mold replacing device, an operator can rapidly fix or replace the mold, automatic replacement of the mold is achieved, the mold replacing time is shortened, and the working intensity of the operator is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of air tightness detection, and in particular to a quick mold changing device dedicated to air tightness detection equipment. Background Art

[0002] Airtightness testing equipment is widely used in the field of testing the sealing performance of products, such as automotive parts, electronic products, medical equipment, and household appliances. This type of equipment uses a specific mold or fixture to test the sealing performance of the object to be tested to ensure that the product has good airtightness during use. However, due to the different shapes, sizes, and sealing requirements of the objects to be tested, the equipment usually needs to have a flexible mold change function to meet the diverse testing needs. Therefore, the mold change device has become an indispensable part of the airtightness testing equipment.

[0003] Some mold changing devices dedicated to air tightness testing equipment use a mold detection slot structure. The mold detection slot is used to place the object to be tested, and is pressed down against the mold through a lifting mechanism to ensure that a seal is formed between the object and the mold. During the test, the air tightness testing mechanism inflates or evacuates air into the detection slot to determine whether there is a leak in the object to be tested. This detection method does not require the air tightness testing mechanism to be inserted into a specific hole in the object to be tested, but instead places it directly in the mold detection slot to complete the seal test. For example, the rubber strips used for car windows, doors or engine covers are tested for their integrity to ensure the isolation performance of water vapor and airflow. Another example is the casing of small devices such as smart watches and Bluetooth headsets, which are ensured to meet the waterproof performance standards through sealing tests.

[0004] Due to the wide variety and size of the items to be tested, if the items are large, they may not fit into the test slot of the mold; and if the items are small, they can fit in, but if the size of the test slot is too large, the required inflation or vacuum time will be extended, and the detection accuracy requirements will increase accordingly. Therefore, in order to ensure the efficiency and accuracy of the detection, the size of the test slot on the mold needs to be changed according to the size of the item to be tested so that it matches the shape and size of the product. In the process of fixing or loosening the mold, the existing mold changing device mostly uses traditional manual operation or simple mechanical mechanism, which requires a long replacement time. This defect will be particularly prominent in a production environment with multiple varieties and small batches, which not only limits the flexibility of the production line, but also significantly increases production costs and operational risks.

[0005] Therefore, it is urgent to propose a quick mold changing device dedicated to airtightness testing equipment to improve the efficiency of mold fixing or loosening in the existing equipment during the testing of multiple specifications of objects to be tested, thereby improving the efficiency of mold replacement. Summary of the invention

[0006] The purpose of this application is to overcome the deficiencies in the prior art and to propose a quick mold changing device dedicated to airtightness testing equipment to solve the problem of low efficiency in mold fixing or loosening of the existing mold changing device during the testing of multiple specifications of objects to be tested, thereby improving the efficiency of mold replacement.

[0007] This application is implemented through the following technical solutions:

[0008] The present application proposes a quick mold changing device dedicated to an airtightness testing device, comprising a mold, an airtightness testing mechanism, a fixing mechanism and a base, wherein the airtightness testing mechanism and the fixing mechanism are arranged on the base, the mold is provided with a testing groove for placing an object to be tested, the airtightness testing mechanism is used to seal the testing groove and inflate or exhaust air into the testing groove, and the fixing mechanism comprises:

[0009] A support seat, movably disposed on the base, and the mold is placed on the support seat;

[0010] Two propulsion assemblies are respectively arranged on both sides of the bottom of the support base, and can drive the support base to move upward;

[0011] Two fixing components, respectively arranged on both sides of the top edge of the support base, can fix the mold on the support base;

[0012] When the propulsion assembly drives the support seat to move upward, the propulsion assembly simultaneously drives the fixing assembly to move away from the mold to release the mold;

[0013] When the propulsion assembly moves in a direction away from the support seat, the support seat moves downward by its own gravity, and the propulsion assembly drives the fixing assembly to fix the mold at the same time.

[0014] In one embodiment of the present application, each of the propulsion components comprises:

[0015] A motor, arranged on the base;

[0016] A first screw rod, which is axially connected to the rotating shaft of the motor;

[0017] A propulsion block, threadedly connected to the first screw rod, the propulsion block is slidably connected to the base, and a first inclined surface is provided on a side of the propulsion block close to the support seat;

[0018] A second inclined surface matched with the first inclined surface is provided on one side of the bottom of the support seat close to the propulsion block, and the first inclined surface is in contact with and parallel to the second inclined surface;

[0019] When the motor drives the first screw to rotate in the forward direction, the first screw drives the propulsion block to move toward the support seat, and the first inclined surface squeezes the second inclined surface in the horizontal direction, so that the support seat moves upward and drives the fixing assembly to release the mold;

[0020] When the motor drives the first screw rod to rotate in the opposite direction, the first screw rod drives the propulsion block to move away from the support seat, and the support seat moves downward by its own gravity, and the fixing assembly simultaneously fixes the mold, thereby fixing the mold on the support seat.

[0021] In one embodiment of the present application, each of the fixing components comprises:

[0022] A second screw rod is transmission-connected to the first screw rod, and the second screw rod and the first screw rod are arranged along the same axial direction;

[0023] A sliding block, threadedly connected to the second screw rod, and the sliding block is slidably connected to the base;

[0024] A clamping block, rotatably connected to the base;

[0025] A connecting rod, one end of which is rotatably connected to the sliding block, and the other end of which is rotatably connected to the clamping block;

[0026] When the first screw rod drives the second screw rod to rotate synchronously in the forward direction, the second screw rod drives the sliding block to move toward the direction of the mold, so that the sliding block pushes the connecting rod forward, so that the clamping block rotates relative to the base, and the clamping block rotates in a direction away from the mold, thereby releasing the mold;

[0027] When the first screw rod drives the second screw rod to rotate synchronously in the opposite direction, the sliding block moves away from the mold, so that the connecting rod drives the clamping block to rotate relative to the base, and the clamping block rotates toward the mold, so that the clamping block clamps the mold, thereby fixing the mold on the support seat.

[0028] In one embodiment of the present application, each of the fixing components includes a synchronous belt, the first screw rod and the second screw rod are both rotatably connected to the base, the first screw rod and the second screw rod are both provided with teeth, and the synchronous belt surrounds the teeth of the first screw rod and the teeth of the second screw rod;

[0029] When the first screw rod rotates, the first screw rod drives the second screw rod to keep rotating synchronously through the synchronous belt.

[0030] In one embodiment of the present application, each of the propulsion assemblies comprises a sliding wheel, the sliding wheel is rotatably connected to the first inclined plane, and the sliding wheel can roll along the extension direction of the first screw rod;

[0031] When the first inclined surface presses the second inclined surface in the horizontal direction, the sliding wheel rolls on the first inclined surface, so that the second inclined surface pushes the support seat to move upward;

[0032] When the first inclined surface moves away from the second inclined surface in the horizontal direction, the sliding wheel rolls in the opposite direction of the first inclined surface, so that the support seat moves downward under the action of gravity.

[0033] In one embodiment of the present application, a clamping portion is provided at one end of the clamping block away from the connecting rod, and a clamping groove is provided at the top of the mold near its edge;

[0034] When the clamping block rotates toward the mold, the clamping portion engages with the clamping groove, thereby firmly fixing the mold on the support seat;

[0035] When the clamping block rotates in a direction away from the mold, the clamping portion is disengaged from the clamping slot, so that the mold is released, so as to facilitate rapid replacement of the mold.

[0036] In one embodiment of the present application, an avoidance groove is formed at one end of the clamping block close to the connecting rod to prevent interference between the clamping block and the connecting rod during rotation.

[0037] In one embodiment of the present application, the clamping block is provided with a first abutting surface at the position of the avoidance groove, and the connecting rod is provided with a second abutting surface;

[0038] When the sliding block pushes the connecting rod forward, the clamping block rotates in a direction away from the mold, so that the first abutting surface is in contact with the second abutting surface.

[0039] In one embodiment of the present application, a positioning groove is provided at the bottom of the support seat, and a positioning portion is provided at the base, and the positioning portion extends into the positioning groove to limit and guide the position of the support seat;

[0040] Support parts for supporting the mold are provided on both sides of the support seat, and a plurality of air holes are provided on the support seat in a vertical direction;

[0041] When the mold is placed on the support seat, there is a gap between the mold and each of the air holes facing the mold, so that when the support seat moves upward or downward, the air resistance is reduced and the movement efficiency is improved.

[0042] In one embodiment of the present application, the airtightness detection mechanism includes:

[0043] A lifting mechanism is arranged on the base;

[0044] A pressing plate, arranged on the lifting mechanism, and a pneumatic hole is opened on the pressing plate;

[0045] An airtightness detection head is disposed in the pneumatic hole and seals the opening of the pneumatic hole toward the airtightness detection head;

[0046] When the lifting frame drives the pressing plate to press the mold downward, the pressing plate fits the mold, and the pneumatic hole is connected to the detection slot, and the airtightness detection head inflates or exhausts air into the detection slot through the pneumatic hole to detect the airtightness of the object to be tested;

[0047] When the lifting frame drives the pressing plate to move upward, the pressing plate is separated from the mold, and the pneumatic hole is disconnected from the detection groove.

[0048] Compared with the prior art, the beneficial effects of this application are:

[0049] The airtightness detection mechanism and the fixing mechanism are arranged on the base, and the mold is provided with a detection groove for placing the object to be tested. The fixing mechanism includes a support seat, two propulsion components and two fixing components. The support seat is movably arranged on the base, and the mold is placed on the support seat; the two propulsion components are respectively arranged on both sides of the bottom of the support seat, and can drive the support seat to move upward; the two fixing components are respectively arranged on both sides of the top edge of the support seat, and can fix the mold on the support seat; when the propulsion component drives the support seat to move upward, the propulsion component simultaneously drives the fixing component to move away from the mold to loosen the mold; when the propulsion component moves away from the support seat, the support seat moves downward by its own gravity, and the propulsion component simultaneously drives the fixing component to fix the mold. The fixing mechanism loosens the mold when it rises and fixes it when it falls through the cooperation of the electric propulsion component and the fixing component, which improves the efficiency of mold replacement, enables operators or equipment to quickly fix or replace the mold, realizes the automatic replacement of the mold, shortens the mold change time, and reduces the work intensity of the operator.

[0050] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0052] Figure 1 A three-dimensional diagram of a quick mold changing device dedicated to an airtightness testing device provided in an embodiment;

[0053] Figure 2 A front view of a quick mold changing device dedicated to an airtightness testing device provided in an embodiment;

[0054] Figure 3 A side view of a quick mold changing device dedicated to an airtightness testing device provided in an embodiment;

[0055] Figure 4 for Figure 3 A cross-sectional view of the PP portion;

[0056] Figure 5 A three-dimensional diagram of a mold, an airtightness detection mechanism and a fixing mechanism provided in an embodiment;

[0057] Figure 6 A three-dimensional diagram of a mold and a fixing mechanism provided in one embodiment;

[0058] Figure 7 A three-dimensional diagram of a fixing mechanism on one side provided in an embodiment;

[0059] Figure 8 for Figure 3 A cross-sectional view of the PP portion of the embodiment (showing only the fixing mechanism on one side, and the clamping portion of the clamping block and the clamping groove of the mold are in a clamping state);

[0060] Fig. 9 for Figure 3 A cross-sectional view of the PP portion of the mold (showing the fixing mechanism on only one side, with the clamping portion of the clamping block and the clamping groove of the mold in a loosened state).

[0061] Description of reference numerals:

[0062] 10. Quick mold changing device for air tightness testing equipment; 100. Mold; 110. Testing slot; 120. Card slot; 200. Air tightness testing mechanism; 210. Lifting mechanism; 220. Pressing plate; 221. Pneumatic hole; 230. Air tightness testing head; 300. Fixing mechanism; 310. Support seat; 311. Second inclined surface; 312. Positioning slot; 313. Support part; 314. Air vent; 320. Propelling group Components; 321, motor; 322, first screw rod; 323, push block; 3231, first inclined surface; 324, sliding wheel; 330, fixing assembly; 331, second screw rod; 332, sliding block; 333, connecting rod; 3331, second abutting surface; 334, clamping block; 3341, clamping part; 3342, avoidance groove; 3343, first abutting surface; 335, synchronous belt; 400, base; 410, positioning part. DETAILED DESCRIPTION

[0063] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0064] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of this application.

[0065] It should be noted that when an element is referred to as being "fixed on" or "set on" another component, it can be directly on the other component or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

[0066] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0067] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0068] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0069] Please refer to Figures 1 to 9 The present application proposes a quick mold changing device 10 dedicated to airtightness testing equipment, comprising a mold 100, an airtightness testing mechanism 200, a fixing mechanism 300 and a base 400. The airtightness testing mechanism 200 and the fixing mechanism 300 are arranged on the base 400. The mold 100 is provided with a testing slot 110 for placing an object to be tested. The airtightness testing mechanism 200 is used to seal the testing slot 110 and inflate or exhaust air into the testing slot 110. The fixing mechanism 300 comprises a support seat 310, two propulsion assemblies 320 and two fixing assemblies 330. The support seat 310 is movably arranged on the base 400, and the mold 100 is placed on the support seat 310; the two propulsion assemblies 320 are respectively arranged on both sides of the bottom of the support seat 310, which can drive the support seat 310 to move upward; the two fixing assemblies 330 are respectively arranged on both sides of the top edge of the support seat 310, which can fix the mold 100 on the support seat 310.

[0070] When the propulsion assembly 320 drives the support seat 310 to move upward, the propulsion assembly 320 simultaneously drives the fixing assembly 330 to move away from the mold 100 to release the mold 100;

[0071] When the propulsion assembly 320 moves in a direction away from the support base 310 , the support base 310 moves downward by its own gravity, and the propulsion assembly 320 drives the fixing assembly 330 to fix the mold 100 at the same time.

[0072] Specifically, the support seat 310 is movably arranged on the base 400, and is used to place the mold 100 and realize the fixing and loosening of the mold 100 through its lifting and lowering. The support seat 310 can move up and down so that the mold 100 can remain stable during the detection process and quickly detach when replaced. Two propulsion components 320 are respectively arranged on both sides of the bottom of the support seat 310, and can drive the support seat 310 to move upward. Through the symmetrical arrangement of the two propulsion components 320, the smooth lifting and lowering of the support seat 310 is achieved, and the tilting or instability of the mold 100 during the movement is avoided. The two fixing components 330 are respectively arranged on both sides of the top edge of the support seat 310, and the mold 100 on the support seat 310 can be fixed. The two fixing components 330 are respectively arranged on both sides of the top edge of the support seat 310, and the mold 100 on the support seat 310 can be fixed. The two fixing components 330 cooperate with the mold 100 to achieve the fixing and loosening of the mold 100. The arrangement of the fixing assembly 330 ensures that the mold 100 can be firmly clamped on the support seat 310 and can be quickly released when it needs to be replaced. The symmetrical arrangement of the two propulsion assemblies 320 and the two fixing assemblies 330 achieves the stability of the support seat 310 during the lifting process, avoiding the shaking or jamming caused by uneven force on one side. This structural design further improves the accuracy of positioning and detection of the mold 100. When the propulsion assembly 320 drives the support seat 310 to move upward, the fixing assembly 330 simultaneously moves away from the mold 100 to release the mold 100, so that the operator or equipment can quickly replace the mold 100; when the propulsion assembly 320 moves away from the support seat 310, the support seat 310 sinks by its own gravity, and at the same time drives the fixing assembly 330 to re-clamp the mold 100, and the mold 100 is firmly fixed on the support seat 310. Thus, the mold 100 is loosened when it is raised and fixed when it is lowered. This automated operation effectively reduces the risk of human error and improves the efficiency and safety of replacing the mold 100.

[0073] It is worth noting that the support base 310 sinks by its own gravity without the need for additional power drive, which simplifies the system structure and reduces costs and energy consumption.

[0074] It should be understood that the mold changing devices in traditional air tightness testing equipment mostly rely on manual operation or simple mechanical mechanisms to complete the fixing and loosening of the mold 100. This operation is not only time-consuming, but also requires a high degree of manual participation, which increases the complexity of the operation. In a multi-variety, small-batch production environment, such defects are particularly obvious. Frequent mold changes will cause the production line to be down for too long, affecting the overall production efficiency. In the present application, the fixing mechanism 300 cooperates with the electric propulsion component 320 and the fixing component 330, so that the operator or equipment can quickly fix or replace the mold 100, realize the automatic replacement of the mold 100, shorten the mold change time, and reduce the work intensity of the operator. The problem of low efficiency of fixing or loosening the mold 100 in the existing mold changing device during the detection of multi-specification items to be tested is solved, thereby improving the efficiency of replacing the mold 100.

[0075] It should be noted that for objects to be tested of different sizes and shapes, the rapid replacement of the mold 100 is the key to ensuring the detection efficiency. In the present application, the rapid mold change device can not only adapt to molds 100 of different specifications, that is, detection slots 110 of different sizes and shapes on the mold 100, but also quickly switch the mold 100 between different detection requirements, greatly improving the flexibility of the production line. This design is particularly suitable for use in automotive parts, electronic products, medical equipment and other fields, meeting the needs of these industries for efficient airtightness detection.

[0076] Please refer to Figures 6 to 9 In one embodiment, each propulsion assembly 320 includes a motor 321, a first screw rod 322, and a propulsion block 323. The motor 321 is arranged on the base 400; the axial direction of the first screw rod 322 is connected to the rotating shaft of the motor 321; the propulsion block 323 is threadedly connected to the first screw rod 322, and the propulsion block 323 is slidably connected to the base 400. A first inclined surface 3231 is provided on the side of the propulsion block 323 close to the support seat 310; a second inclined surface 311 adapted to the first inclined surface 3231 is provided on the side of the bottom of the support seat 310 close to the propulsion block 323, and the first inclined surface 3231 is in contact with and parallel to the second inclined surface 311. When the motor 321 drives the first screw rod 322 to rotate forward, the first screw rod 322 drives the propulsion block 323 to move toward the support seat 310, and the first inclined surface 3231 squeezes the second inclined surface 311 in the horizontal direction, so that the support seat 310 moves upward and drives the fixing assembly 330 to release the mold 100; when the motor 321 drives the first screw rod 322 to rotate reversely, the first screw rod 322 drives the propulsion block 323 to move away from the support seat 310, and the support seat 310 moves downward by its own gravity, and the fixing assembly 330 simultaneously fixes the mold 100, thereby fixing the mold 100 on the support seat 310.

[0077] Specifically, the first inclined surface 3231 of the propulsion block 323 contacts the second inclined surface 311 of the support seat 310. When the motor 321 drives the first screw rod 322 to rotate in the forward direction, the first screw rod 322 drives the propulsion block 323 to move along the axial direction of the first screw rod 322 toward the support seat 310. In this process, the first inclined surface 3231 of the propulsion block 323 squeezes the second inclined surface 311 at the bottom of the support seat 310 in the horizontal direction, pushing the support seat 310 to move upward. While the support seat 310 rises, it drives the fixing assembly 330 to move away from the mold 100, thereby loosening the mold 100 and facilitating the replacement of the mold 100. When the motor 321 drives the first screw rod 322 in the reverse direction, the first screw rod 322 drives the propulsion block 323 to move away from the support seat 310. As the pushing block 323 moves away, the support seat 310 loses support and naturally sinks under its own gravity, driving the fixing assembly 330 to clamp the mold 100 , thereby firmly fixing the mold 100 on the support seat 310 .

[0078] Please refer to Figures 6 to 9 In one embodiment, each fixing assembly 330 includes a second screw rod 331, a sliding block 332, a clamping block 334 and a connecting rod 333. The second screw rod 331 is transmission-connected to the first screw rod 322, and the second screw rod 331 and the first screw rod 322 are arranged along the same axial direction; the sliding block 332 is threadedly connected to the second screw rod 331, and the sliding block 332 is slidingly connected to the base 400; the clamping block 334 is rotatably connected to the base 400; one end of the connecting rod 333 is rotatably connected to the sliding block 332, and the other end is rotatably connected to the clamping block 334. When the first screw rod 322 drives the second screw rod 331 to rotate synchronously in the forward direction, the second screw rod 331 drives the sliding block 332 to move toward the mold 100, so that the sliding block 332 pushes the connecting rod 333 forward, so that the clamping block 334 rotates relative to the base 400, and the clamping block 334 rotates in a direction away from the mold 100, thereby loosening the mold 100; when the first screw rod 322 drives the second screw rod 331 to rotate synchronously in the reverse direction, the sliding block 332 moves in a direction away from the mold 100, so that the connecting rod 333 drives the clamping block 334 to rotate relative to the base 400, and the clamping block 334 rotates toward the mold 100, so that the clamping block 334 clamps the mold 100, thereby fixing the mold 100 on the support seat 310.

[0079] Specifically, when the motor 321 drives the first screw rod 322 to rotate forward, the first screw rod 322 drives the second screw rod 331 to rotate forward synchronously through the transmission mechanism. As the second screw rod 331 rotates, the sliding block 332 moves along the second screw rod 331 toward the mold 100. The forward movement of the sliding block 332 pushes the connecting rod 333 to move toward the mold 100, and at the same time drives the clamping block 334 to rotate in a direction away from the mold 100, thereby loosening the mold 100, so that the mold 100 can be easily taken out or replaced.

[0080] When the motor 321 drives the first screw rod 322 to rotate in the opposite direction, the first screw rod 322 drives the second screw rod 331 to rotate in the opposite direction synchronously through the transmission mechanism, and the sliding block 332 moves along the second screw rod 331 in a direction away from the mold 100. The movement of the sliding block 332 pulls the connecting rod 333 to move in the opposite direction, so that the clamping block 334 rotates and clamps the mold 100 in the direction of the mold 100, ensuring that the mold 100 is fixed firmly, thereby firmly fixing the mold 100 on the support seat 310.

[0081] Please refer to Figure 6 In one embodiment, each fixing assembly 330 includes a synchronous belt 335, the first screw rod 322 and the second screw rod 331 are both rotatably connected to the base 400, the first screw rod 322 and the second screw rod 331 are both provided with teeth, and the synchronous belt 335 surrounds the teeth of the first screw rod 322 and the teeth of the second screw rod 331; when the first screw rod 322 rotates, the first screw rod 322 drives the second screw rod 331 to maintain synchronous rotation through the synchronous belt 335.

[0082] Specifically, when the motor 321 drives the first screw rod 322 to rotate forward, the teeth of the first screw rod 322 mesh with the synchronous belt 335, driving the synchronous belt 335 to rotate in the corresponding direction, and the synchronous belt 335 keeps the second screw rod 331 in synchronous forward rotation through transmission. In this process, the second screw rod 331 drives the sliding block 332 to move toward the mold 100, and pushes the connecting rod 333 and the clamping block 334 away from the mold 100, loosening the mold 100 for replacement operation. When the motor 321 drives the first screw rod 322 to rotate in the opposite direction, the synchronous belt 335 will also drive the second screw rod 331 to rotate in the opposite direction synchronously. At this time, the sliding block 332 moves in the direction away from the mold 100, and pulls the connecting rod 333 and the clamping block 334 to clamp the mold 100, and firmly fixes the mold 100 on the support seat 310 to ensure stability during the detection process.

[0083] Please refer to Figure 6 and Figure 7In one embodiment, each propulsion assembly 320 includes a plurality of sliding wheels 324, which are rotatably connected to the first inclined surface 3231, and can roll along the extension direction of the first screw rod 322. When the first inclined surface 3231 presses the second inclined surface 311 in the horizontal direction, each sliding wheel 324 rolls on the first inclined surface 3231, so that the second inclined surface 311 pushes the support seat 310 to move upward; when the first inclined surface 3231 moves away from the second inclined surface 311 in the horizontal direction, each sliding wheel 324 rolls in the opposite direction of the first inclined surface 3231, so that the support seat 310 moves downward under the action of gravity.

[0084] Specifically, the introduction of the sliding wheel 324 greatly reduces the friction between the first inclined surface 3231 and the second inclined surface 311, making the support seat 310 more stable and smooth during the lifting process. When the motor 321 drives the first screw rod 322 to rotate in the forward direction, the first screw rod 322 drives the propulsion block 323 to move toward the support seat 310. As the propulsion block 323 moves, the first inclined surface 3231 squeezes the second inclined surface 311 in the horizontal direction. At this time, multiple sliding wheels 324 roll synchronously on the first inclined surface 3231 to reduce the friction between the inclined surfaces. The rolling action of the sliding wheel 324 enables the support seat 310 to move upward smoothly, while driving the fixing assembly 330 to move away from the mold 100, loosening the mold 100, and facilitating the replacement of the mold 100.

[0085] When the motor 321 drives the first screw rod 322 to rotate in the reverse direction, the first screw rod 322 drives the push block 323 to move away from the support base 310. As the push block 323 moves away, the first inclined surface 3231 separates from the second inclined surface 311, and the plurality of sliding wheels 324 roll in the opposite direction of the first inclined surface 3231, so that the support base 310 naturally sinks under the action of gravity. While the support base 310 sinks, the fixing assembly 330 clamps the mold 100 and firmly fixes the mold 100 on the support base 310.

[0086] Please refer to Figures 6 to 8 In one embodiment, a clamping portion 3341 is provided at one end of the clamping block 334 away from the connecting rod 333, and a clamping slot 120 is provided at the top of the mold 100 near its edge. When the clamping block 334 rotates toward the mold 100, the clamping portion 3341 engages with the clamping slot 120, thereby firmly fixing the mold 100 on the support seat 310; when the clamping block 334 rotates in a direction away from the mold 100, the clamping portion 3341 disengages from the clamping slot 120, so that the mold 100 is released, so that the mold 100 can be quickly replaced.

[0087] Specifically, when the motor 321 drives the second screw rod 331 to rotate, the sliding block 332 and the connecting rod 333 are pushed to move, so that the clamping block 334 rotates toward the mold 100. As the clamping block 334 rotates, the clamping portion 3341 thereon is embedded in the clamping slot 120 of the mold 100. The interlocking structure of the clamping portion 3341 and the clamping slot 120 ensures that the mold 100 is firmly fixed on the support seat 310, thereby preventing the mold 100 from loosening or shifting during the detection process.

[0088] When the motor 321 drives the second screw rod 331 to rotate in the reverse direction, the sliding block 332 moves in the opposite direction, driving the connecting rod 333 to rotate the clamping block 334 away from the mold 100. At this time, the clamping portion 3341 is disengaged from the clamping slot 120, and the clamping between the mold 100 and the support seat 310 is released, which facilitates the rapid replacement of the mold 100.

[0089] Please refer to Figure 8 In one embodiment, an avoidance groove 3342 is formed at one end of the clamping block 334 close to the connecting rod 333 to prevent interference between the clamping block 334 and the connecting rod 333 during the rotation process.

[0090] Specifically, when the motor 321 drives the first screw rod 322 to rotate in the forward direction, the sliding block 332 drives the connecting rod 333 to move toward the mold 100, and pushes the clamping block 334 to rotate in the direction away from the mold 100. In this process, the connecting rod 333 partially enters the avoidance groove 3342 on the clamping block 334, avoiding direct contact and interference between the connecting rod 333 and the clamping block 334, and ensuring the smooth rotation of the clamping block 334.

[0091] Please refer to Figure 8 In one embodiment, the clamping block 334 is provided with a first abutting surface 3343 at the position of the avoidance groove 3342, and the connecting rod 333 is provided with a second abutting surface 3331; when the sliding block 332 pushes the connecting rod 333 forward, the clamping block 334 rotates in a direction away from the mold 100, so that the first abutting surface 3343 is in contact with the second abutting surface 3331.

[0092] Specifically, when the motor 321 drives the second screw rod 331 to rotate in the forward direction, the sliding block 332 pushes the connecting rod 333 to move forward, so that the clamping block 334 rotates in a direction away from the mold 100. In this process, the second abutting surface 3331 of the connecting rod 333 fits with the first abutting surface 3343 of the clamping block 334, ensuring the position accuracy and movement stability of the clamping block 334 during the rotation process, and avoiding deviation or shaking.

[0093] Please refer to Figures 4 to 6In one embodiment, a positioning groove 312 is provided at the bottom of the support seat 310, and a positioning portion 410 is provided on the base 400, and the positioning portion 410 extends into the positioning groove 312 to limit and guide the position of the support seat 310; support portions 313 for supporting the mold 100 are provided on both sides of the support seat 310, and a plurality of air holes 314 are provided in the vertical direction of the support seat 310; when the mold 100 is placed on the support seat 310, there is a gap between the mold 100 and the opening of each air hole 314 facing the mold 100, so as to reduce air resistance and improve the efficiency of movement when the support seat 310 moves upward or downward.

[0094] Specifically, when the support seat 310 moves up and down, the positioning portion 410 on the base 400 extends into the positioning groove 312 of the support seat 310 to limit and guide the position of the support seat 310. This design ensures the stability of the support seat 310 during the lifting process and avoids inaccurate installation or detection errors of the mold 100 caused by offset. Support portions 313 are provided on both sides of the support seat 310 to support the mold 100. More importantly, the support portions 313 are used to create a gap between the orifice of the air vent 314 and the mold 100, so that when the support seat 310 moves up or down, air can be discharged or entered smoothly through these air vents 314. The presence of the air vent 314 prevents the air from forming resistance between the support seat 310 and the mold 100, thereby improving the movement efficiency of the support seat 310.

[0095] Please refer to Figure 1 and Figure 5 In one embodiment, the airtightness detection mechanism 200 includes a lifting mechanism 210, a pressing plate 220 and an airtightness detection head 230. The lifting mechanism 210 is arranged on the base 400; the pressing plate 220 is arranged on the lifting mechanism 210, and a pneumatic hole 221 is opened on the pressing plate 220; the airtightness detection head 230 is arranged in the pneumatic hole 221, and the opening of the pneumatic hole 221 toward the airtightness detection head 230 is sealed. When the lifting frame drives the pressing plate 220 to press the mold 100 downward, the pressing plate 220 fits the mold 100, and the pneumatic hole 221 is connected to the detection slot 110. The airtightness detection head 230 inflates or exhausts air into the detection slot 110 through the pneumatic hole 221 to detect the airtightness of the object to be tested; when the lifting frame drives the pressing plate 220 to move upward, the pressing plate 220 is separated from the mold 100, and the pneumatic hole 221 is disconnected from the detection slot 110.

[0096] Specifically, when the lifting mechanism 210 drives the pressing plate 220 to move downward, the pressing plate 220 is closely fitted with the mold 100, ensuring that the pneumatic hole 221 on the pressing plate 220 is connected with the detection slot 110 of the mold 100. At this time, the airtightness detection head 230 can inflate or exhaust air into the detection slot 110 through the pneumatic hole 221 to determine whether there is leakage in the object to be detected.

[0097] When the detection is completed, the lifting mechanism 210 drives the pressing plate 220 to move upward, so that the pressing plate 220 is separated from the mold 100. As the pressing plate 220 moves upward, the communication state between the pneumatic hole 221 and the detection groove 110 is disconnected, and a detection process is completed.

[0098] Please refer to Figures 1 to 9 , the specific implementation process of this application:

[0099] Step 1: Initialize the quick mold changing device 10 dedicated to the air tightness testing equipment of the present application. The motor 321 is controlled by the control device to run, the motor 321 drives the first screw rod 322 to rotate forward, the first screw rod 322 drives the push block 323 to move toward the direction of the support seat 310, the first inclined surface 3231 squeezes the second inclined surface 311 in the horizontal direction, and multiple sliding wheels 324 roll synchronously on the first inclined surface 3231 of the push block 323 to reduce friction, so that the support seat 310 moves upward, and at the same time, the first screw rod 322 drives the second screw rod 331 to rotate forward synchronously, and the second screw rod 331 drives the sliding block 332 to move toward the direction of the mold 100, so that the sliding block 332 pushes the connecting rod 333 forward, so that the clamping block 334 rotates relative to the base 400, and the clamping block 334 rotates in the direction away from the mold 100 on the support seat 310, and the mold 100 on the support seat 310 can be installed or replaced.

[0100] Step 2: Install the mold 100 . Place the mold 100 on the support portion 313 , and put the object to be tested into the testing slot 110 of the mold 100 .

[0101] Step 3: Fix the mold 100. The motor 321 drives the first screw rod 322 to rotate in the opposite direction, and the first screw rod 322 drives the propulsion block 323 to move away from the support seat 310. The support seat 310 moves downward by its own gravity, and the fixing assembly 330 fixes the mold 100 synchronously, thereby fixing the mold 100 on the support seat 310; at the same time, the first screw rod 322 drives the second screw rod 331 to rotate in the opposite direction synchronously, and the sliding block 332 moves away from the mold 100, so that the connecting rod 333 drives the clamping block 334 to rotate relative to the base 400, and the clamping block 334 rotates toward the direction of the mold 100, so that the clamping block 334 clamps the mold 100, that is, the clamping portion 3341 of the clamping block 334 is embedded in the clamping slot 120 of the mold 100, and the clamping portion 3341 of the clamping block 334 is closely matched with the clamping slot 120 of the mold 100, ensuring that the mold 100 is firmly fixed on the support seat 310 to avoid displacement or loosening during the detection process. Thereby, the mold 100 is fixed on the supporting seat 310 .

[0102] Step 4: Inspect the article to be tested in the inspection slot 110 of the mold 100. The lifting mechanism 210 is started to control the pressing plate 220 to press down. The lifting mechanism 210 drives the pressing plate 220 to start moving downward, contacting and tightly fitting with the surface of the mold 100. The pneumatic hole 221 on the pressing plate 220 is connected to the inspection slot 110 of the mold 100, providing a closed space for the operation of the airtightness detection head 230. The airtightness detection head 230 inflates or exhausts air into the inspection slot 110 through the pneumatic hole 221 to detect whether there is any leakage in the article to be tested. The system determines whether the airtightness meets the standard based on the preset detection parameters (such as air pressure and vacuum degree). The pressing plate 220 rises and the detection is completed:

[0103] Step 5: Detection completed After the detection is completed, the lifting mechanism 210 drives the pressing plate 220 to move upward, disconnecting the pneumatic hole 221 from the detection slot 110 .

[0104] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A quick mold changing device dedicated to air tightness testing equipment, comprising a mold, an air tightness testing mechanism, a fixing mechanism and a base, wherein the air tightness testing mechanism and the fixing mechanism are arranged on the base, the mold is provided with a testing groove for placing an object to be tested, the air tightness testing mechanism is used to seal the testing groove and inflate or exhaust air into the testing groove, characterized in that: The fixing mechanism comprises: A support seat, movably disposed on the base, and the mold is placed on the support seat; Two propulsion assemblies are respectively arranged on both sides of the bottom of the support base, and can drive the support base to move upward; Two fixing components, respectively arranged on both sides of the top edge of the support base, can fix the mold on the support base; When the propulsion assembly drives the support seat to move upward, the propulsion assembly simultaneously drives the fixing assembly to move away from the mold to release the mold; When the propulsion assembly moves in a direction away from the support seat, the support seat moves downward by its own gravity, and the propulsion assembly drives the fixing assembly to fix the mold at the same time.

2. The rapid mold changing device dedicated to the airtightness testing equipment according to claim 1, characterized in that: Each of the propulsion assemblies comprises: A motor, arranged on the base; A first screw rod, which is axially connected to the rotating shaft of the motor; A propulsion block, threadedly connected to the first screw rod, the propulsion block is slidably connected to the base, and a first inclined surface is provided on a side of the propulsion block close to the support seat; A second inclined surface matched with the first inclined surface is provided on one side of the bottom of the support seat close to the propulsion block, and the first inclined surface is in contact with and parallel to the second inclined surface; When the motor drives the first screw to rotate in the forward direction, the first screw drives the propulsion block to move toward the support seat, and the first inclined surface squeezes the second inclined surface in the horizontal direction, so that the support seat moves upward and drives the fixing assembly to release the mold; When the motor drives the first screw rod to rotate in the opposite direction, the first screw rod drives the propulsion block to move away from the support seat, and the support seat moves downward by its own gravity, and the fixing assembly simultaneously fixes the mold, thereby fixing the mold on the support seat.

3. The rapid mold changing device dedicated to the air tightness testing equipment according to claim 2, characterized in that: Each of the fixing components comprises: A second screw rod is transmission-connected to the first screw rod, and the second screw rod and the first screw rod are arranged along the same axial direction; A sliding block, threadedly connected to the second screw rod, and the sliding block is slidably connected to the base; A clamping block, rotatably connected to the base; A connecting rod, one end of which is rotatably connected to the sliding block, and the other end of which is rotatably connected to the clamping block; When the first screw rod drives the second screw rod to rotate synchronously in the forward direction, the second screw rod drives the sliding block to move toward the direction of the mold, so that the sliding block pushes the connecting rod forward, so that the clamping block rotates relative to the base, and the clamping block rotates in a direction away from the mold, thereby releasing the mold; When the first screw rod drives the second screw rod to rotate synchronously in the opposite direction, the sliding block moves away from the mold, so that the connecting rod drives the clamping block to rotate relative to the base, and the clamping block rotates toward the mold, so that the clamping block clamps the mold, thereby fixing the mold on the support seat.

4. The rapid mold changing device dedicated to the airtightness testing equipment according to claim 3, characterized in that: Each of the fixing components includes a synchronous belt, the first screw rod and the second screw rod are both rotatably connected to the base, the first screw rod and the second screw rod are both provided with teeth, and the synchronous belt surrounds the teeth of the first screw rod and the teeth of the second screw rod; When the first screw rod rotates, the first screw rod drives the second screw rod to keep rotating synchronously through the synchronous belt.

5. The rapid mold changing device dedicated to the air tightness testing equipment according to claim 2, characterized in that: Each of the propulsion assemblies comprises a plurality of sliding wheels, the plurality of sliding wheels are rotatably connected to the first inclined plane, and the plurality of sliding wheels can roll along the extension direction of the first screw rod; When the first inclined surface presses the second inclined surface in the horizontal direction, each of the sliding wheels rolls on the first inclined surface, so that the second inclined surface pushes the support seat to move upward; When the first inclined plane moves away from the second inclined plane in the horizontal direction, each of the sliding wheels rolls in the opposite direction of the first inclined plane, so that the support seat moves downward under the action of gravity.

6. The rapid mold changing device dedicated to airtightness testing equipment according to claim 3, characterized in that: The clamping block is provided with a clamping portion at one end away from the connecting rod, and a clamping groove is provided at the top of the mold near its edge; When the clamping block rotates toward the mold, the clamping portion engages with the clamping groove, thereby firmly fixing the mold on the support seat; When the clamping block rotates in a direction away from the mold, the clamping portion is disengaged from the clamping slot, so that the mold is released, so as to facilitate rapid replacement of the mold.

7. The rapid mold changing device dedicated to airtightness testing equipment according to claim 3, characterized in that: An avoidance groove is formed at one end of the clamping block close to the connecting rod to prevent interference between the clamping block and the connecting rod during the rotation of the clamping block.

8. The rapid mold changing device dedicated to the airtightness testing equipment according to claim 7, characterized in that: The clamping block is provided with a first abutting surface at the position of the avoidance groove, and the connecting rod is provided with a second abutting surface; When the sliding block pushes the connecting rod forward, the clamping block rotates in a direction away from the mold, so that the first abutting surface is in contact with the second abutting surface.

9. The rapid mold changing device dedicated to airtightness testing equipment according to claim 1, characterized in that: A positioning groove is provided at the bottom of the support seat, and a positioning portion is provided at the base, and the positioning portion extends into the positioning groove to limit and guide the position of the support seat; Support parts for supporting the mold are provided on both sides of the support seat, and a plurality of air holes are provided on the support seat in a vertical direction; When the mold is placed on the support seat, there is a gap between the mold and each of the air holes facing the mold, so that when the support seat moves upward or downward, the air resistance is reduced and the movement efficiency is improved.

10. The rapid mold changing device dedicated to airtightness testing equipment according to claim 1, characterized in that: The airtightness detection mechanism comprises: A lifting mechanism is arranged on the base; A pressing plate, arranged on the lifting mechanism, and a pneumatic hole is opened on the pressing plate; An airtightness detection head is disposed in the pneumatic hole and seals the opening of the pneumatic hole toward the airtightness detection head; When the lifting frame drives the pressing plate to press the mold downward, the pressing plate fits the mold, and the pneumatic hole is connected to the detection slot, and the airtightness detection head inflates or exhausts air into the detection slot through the pneumatic hole to detect the airtightness of the object to be tested; When the lifting frame drives the pressing plate to move upward, the pressing plate is separated from the mold, and the pneumatic hole is disconnected from the detection groove.

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