Printer housing air tightness inspection device

Abstract

The utility model discloses a device for checking the air tightness of a printer shell, and relates to the technical field of air tightness detection equipment. The device comprises a base and a tooling platform, wherein sleeves are fixedly arranged at the four corners of the top of the base, a sleeve rod is slidably sleeved inside each sleeve, a driving component for driving the tooling platform to synchronously lift and lower is arranged at the top of the base, a pressing member is fixedly installed on the tooling platform, a through opening for allowing a detection platform to pass through is arranged at the center of the tooling platform, a plurality of pressing members are arranged along the edge of the through opening, and a plurality of clamping components for clamping the printer shell on both sides are arranged on each pressing member. Compared with the prior art, the present application realizes the synchronous and stable lifting and lowering of the tooling platform by arranging a first gear, a second gear, a rack and a first rotating rod, so that the tooling platform remains horizontal during the lifting process, thereby ensuring that the pressing degree of the shell by each pressing member on the tooling platform is the same.

Description

Technical Field

[0001] The utility model relates to the technical field of air tightness detection equipment, in particular to an air tightness detection equipment for a printer shell. Background Art

[0002] The printer is one of the output devices of the computer, which is used to print the computer processing results on the relevant media. When assembling the printer, its shell needs to be tested for air tightness. Why do we need to use an air tightness tester to perform a sealing test? First, it is to confirm the air tightness of the finished product or semi-finished product after some assembly processes. The application of a leak detector can help confirm the integrity of the assembly. For example, when some products are assembled, if there is a leak in a certain process, it can be reworked in time. Therefore, arranging air tightness leak detection processes in some key processes can ensure that the product's sealing meets the requirements. The second is to confirm whether there are extra tiny holes in the molding, die casting, casting and other castings. This is because some castings are prone to pores, shrinkage holes, sand holes and other phenomena after processing. The air tightness testing equipment can screen out the products with tiny holes to prevent such unqualified products from flowing into the next process.

[0003] In the prior art, a Chinese patent document with publication number CN205404047U proposes an air compressor housing air tightness detection device, which has a simple structure, is easy to use, has better sealing, and has accurate detection results. It reduces the burden on operators and improves detection efficiency. However, when it is applied to the air tightness detection of the printer housing, the conventional cylinder clamping method is likely to cause uneven force on each pressure point, and the clamping force is difficult to control. When facing plastic products such as printer housings, due to the problems of difficult to control the clamping force and uneven force, it is easy to cause a series of problems such as scratches and extrusion deformation on the product. Therefore, we disclose a printer housing air tightness inspection device to meet the needs. Utility Model Content

[0004] The utility model aims to provide a device for checking air tightness of a printer housing, so as to solve the problem in the above background technology that it is difficult to control the pressing force when checking air tightness of a printer housing, thereby causing damage to the product to be checked.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for checking the air tightness of a printer housing, comprising a base and a tooling platform, wherein sleeves are fixedly arranged at the four corners of the top of the base, a sleeve rod is slidably sleeved inside each of the sleeves, the top of the sleeve rod is fixedly connected to the bottom of the tooling platform, a plurality of pillars are fixedly connected to the top of the base, the other end of the pillar is fixedly connected to the bottom of the inspection platform, a placement groove is provided on the inspection platform, a sealing ring which can be aligned with the edge of the printer housing is installed on the placement groove, a driving component for driving the tooling platform to synchronously rise and fall is provided on the top of the base, the driving component comprises two racks slidably clamped on the top of the base, the top of each of the racks is meshed with a second gear, the A first rotating rod is fixedly connected to the inside of the second gear, and both ends of the first rotating rod are fixedly connected to the first gear. A fixing block is fixedly provided on the side of each rack facing the second gear, and the two fixing blocks are threadedly connected to the lead screw, and one end of the lead screw is fixedly connected to a servo motor; a pressing member is fixedly installed on the tooling platform, and a through hole for allowing the detection platform to pass through is provided at the center of the tooling platform, and multiple pressing members are provided along the edge of the through hole, and each of the pressing members is provided with multiple groups of clamping assemblies for clamping the printer housing on both sides, and the clamping assembly includes a pressing rod fixedly installed on the top of the pressing member, an L-shaped rod rotatably connected to the pressing rod through the second rotating rod, and an upper rubber wheel and a lower rubber wheel rotatably installed on both ends of the L-shaped rod.

[0006] Preferably, an inflation hole is provided on the detection platform, the inflation hole is located inside the sealing ring, and is connected to an inflation pump through a pipeline.

[0007] Preferably, the sleeve is provided with an arc-shaped opening, and the sleeve rod is provided with saw teeth on one side facing the arc-shaped opening, and the first gear is meshed with the saw teeth on the sleeve rod through the arc-shaped opening.

[0008] Preferably, the screw rod is rotatably mounted on a shaft seat provided on the base, and the servo motor drives the screw rod to rotate.

[0009] Preferably, the screw rod is a double-head screw rod, and threads are formed at both ends of the screw rod and the directions of the threads at both ends are opposite.

[0010] Preferably, a torsion spring is provided inside the second rotating rod, and the torsion spring is used to cooperate with the clamping assembly to complete the clamping action.

[0011] Preferably, a plurality of filling blocks are installed on the surface of the detection platform, and the filling blocks are all located on the inner side of the sealing ring.

[0012] Technical effects and advantages of the utility model:

[0013] 1. The utility model has a reasonable structure. In actual use, the servo motor is controlled to rotate forward, so that the screw rod rotates, and then the two racks are driven to move toward the middle of the base. The rack drives the second gear to rotate. Under the action of the first rotating rod and the sleeve, the first gear drives the sleeve rod to move slowly upward along the sleeve synchronously, and then drives the tooling platform to move slowly upward. When it moves to a suitable position, the opening of the printer housing is turned downward and placed on the sealing ring on the test table. The servo motor is reversed. Under the coordinated use of the first gear, the second gear and the rack, the tooling platform slowly descends and drives the holding part to press against the printer outer shell. The shell is clamped and fixed, and the first gear and the second gear are arranged, and the rack and the first rotating rod are used in combination to realize the synchronous and stable lifting and lowering of the tooling platform, so that the tooling platform is kept horizontal during the lifting process, thereby ensuring that the degree of pressure holding of the shell by each pressing part on the tooling platform is the same. By arranging the servo motor and the lead screw for use in combination, the lifting speed of the tooling platform is relatively slow and gentle, and the lifting speed of the tooling platform is prevented from being too fast, and the pressing part is prevented from impacting the printer shell, thereby preventing the printer shell from being dented under the impact, avoiding damage to the shell, and also facilitating the precise control of the lifting position of the tooling platform;

[0014] 2. In the utility model, when the driving assembly drives the tooling platform to slowly descend, the upper rubber wheel on the L-shaped rod first touches the top of the printer housing. Under the action of the second rotating rod, the L-shaped rod rotates along the second rotating rod, so that the lower rubber wheel clamps the side wall of the outer side of the printer. When clamping, the upper rubber wheel abuts against the upper surface of the printer housing, and the lower rubber wheel abuts against the side of the workpiece. By setting the pressure rod and the L-shaped rod for use in combination, the printer housing can be clamped in the horizontal direction and the vertical direction at the same time, so that the printer housing and the sealing ring fit more closely. By setting the upper rubber wheel and the lower rubber wheel for use in combination, the clamping assembly and the printer housing are prevented from being hard squeezed, thereby avoiding scratches or dents, and improving the product quality of the printer housing.

[0015] 3. In the utility model, by setting a plurality of filling blocks, when the shell is placed on the test bench during air tightness testing, the filling blocks can enter the internal space of the shell, thereby reducing the volume of the gas contained in the shell, thereby reducing the amount of gas required for inflation during air tightness testing, speeding up the inflation and pressurization operation, and improving the testing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model without the tooling platform;

[0018] Figure 3 For this utility model Figure 1The enlarged structural diagram at A in the middle;

[0019] Figure 4 For this utility model Figure 1 Enlarged structural diagram at B in the middle.

[0020] In the figure: 1. base; 2. tooling platform; 3. testing table; 4. sealing ring; 5. holding piece; 6. through-port; 7. sleeve rod; 8. sleeve; 9. arc-shaped opening; 10. first gear; 11. second gear; 12. rack; 13. support; 14. first rotating rod; 15. fixing block; 16. screw rod; 17. servo motor; 18. filling block; 19. pressure rod; 20. second rotating rod; 21. L-shaped rod; 22. upper rubber wheel; 23. lower rubber wheel. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model provides Figure 1-Figure 4The printer housing air tightness inspection device shown in the figure includes a base 1 and a tooling platform 2. The four corners of the top of the base 1 are fixedly provided with sleeves 8. The interior of each sleeve 8 is slidably provided with a sleeve rod 7. The top of the sleeve rod 7 is fixedly connected to the bottom of the tooling platform 2. The top of the base 1 is fixedly connected to a plurality of pillars 13. The other end of the pillar 13 is fixedly connected to the bottom of the inspection platform 3. A placement groove is provided on the inspection platform 3. A sealing ring 4 that can be aligned with the edge of the printer housing is installed on the placement groove. By installing the sealing ring 4 in the placement groove, the sealing ring 4 is firmly fixed, and the positioning and fixing of the housing is facilitated, so that the edge is aligned with the sealing ring 4 to ensure the sealing effect of the housing edge. A driving component for driving the tooling platform 2 to synchronously rise and fall is provided on the top of the base 1. The driving component includes two racks 12 slidably clamped on the top of the base 1. The top of each rack 12 is meshedly connected with a second gear 11. The interior of the second gear 11 is fixedly connected with a first rotating rod 14. The first The two ends of the rotating rod 14 are fixedly connected with the first gear 10, and each rack 12 is fixedly provided with a fixed block 15 on one side facing the second gear 11. The two fixed blocks 15 are threadedly connected with the screw rod 16, and one end of the screw rod 16 is fixedly connected with a servo motor 17. The tooling platform 2 is smoothly lifted and lowered by setting a driving component. By setting the first gear 10 and the second gear 11, the rack 12 and the first rotating rod 14 are used in combination to realize the synchronous and smooth lifting of the tooling platform 2, so that the tooling platform 2 remains horizontal during the lifting process, thereby ensuring that the degree of pressure of each holding part 5 on the tooling platform 2 on the shell is the same. By setting the servo motor 17 and the screw rod 16 for use in combination, the lifting speed of the tooling platform 2 is relatively slow and gentle, avoiding the tooling platform 2 from lifting too fast, causing the holding part 5 to impact the printer shell, thereby preventing the printer shell from being dented under the impact, avoiding damage to the shell, and also facilitating the precise control of the lifting position of the tooling platform 2.

[0023] A holding piece 5 is fixedly installed on the tooling platform 2. A through hole 6 for allowing the detection platform 3 to pass through is provided in the center of the tooling platform 2. Multiple holding pieces 5 are arranged along the edge of the through hole 6. Each holding piece 5 is provided with multiple groups of clamping components for clamping the printer housing on both sides. The clamping component includes a pressure rod 19 fixedly installed on the top of the holding piece 5, an L-shaped rod 21 rotatably connected to the pressure rod 19 through a second rotating rod 20, and an upper rubber wheel 22 and a lower rubber wheel 23 rotatably installed at both ends of the L-shaped rod 21. By setting the clamping component, the printer housing is clamped in both directions. By setting the pressure rod 19 and the L-shaped rod 21 for use, in the process of the driving component controlling the tooling platform 2 to press down, the printer housing is clamped in the horizontal direction and the vertical direction at the same time, so that the printer housing and the sealing ring 4 fit more closely. In the clamping process, by setting the upper rubber wheel 22 and the lower rubber wheel 23 for use, hard extrusion between the clamping component and the printer housing is prevented, thereby avoiding scratches or concave tops, and improving the product quality of the printer housing.

[0024] Furthermore, as an implementation of this example, an inflation hole is provided on the testing platform 3, the inflation hole is located inside the sealing ring 4, and is connected to an inflation pump through a pipeline, so as to inflate the inside of the clamped printer to detect the air tightness inside.

[0025] Further, in this embodiment, if Figure 1-Figure 3As shown, an arc-shaped opening 9 is provided on the sleeve 8, and a sawtooth is provided on the side of the sleeve rod 7 facing the arc-shaped opening 9. The first gear 10 meshes with the sawtooth on the sleeve rod 7 through the arc-shaped opening 9. The screw rod 16 is rotatably installed on the shaft seat set on the base 1. The servo motor 17 drives the screw rod 16 to rotate. The screw rod 16 is a double-headed screw. Both ends of the screw rod 16 are provided with threads and the directions of the threads at both ends are opposite. In actual use, the servo motor 17 is controlled to rotate forward to rotate the screw rod 16, thereby driving the two racks 12 to move toward the middle of the base 1. The rack 12 drives the second gear 11 to rotate. Under the action of the first rotating rod 14 and the sleeve 8, the first gear 10 drives the sleeve rod 7 to move slowly upward along the sleeve 8 synchronously, thereby driving the tooling platform 2 to move slowly upward. When it moves to the appropriate position, the opening of the printer housing is facing downward and placed on the detection table 3. On the sealing ring 4, the servo motor 17 is reversed. With the cooperation of the first gear 10, the second gear 11 and the rack 12, the tooling platform 2 slowly descends and drives the holding part to clamp and fix the printer housing. By setting the first gear 10, the second gear 11, the rack 12 and the first rotating rod 14, the tooling platform 2 can be lifted and lowered synchronously and smoothly, so that the tooling platform 2 remains horizontal during the lifting process, thereby ensuring that the degree of pressure of each holding part 5 on the tooling platform 2 on the housing is the same. By setting the servo motor 17 and the screw rod 16 for use, the lifting speed of the tooling platform 2 is relatively slow and gentle, avoiding the tooling platform 2 from lifting too fast, causing the holding part 5 to impact the printer housing, thereby preventing the printer housing from being dented under the impact, avoiding damage to the housing, and also facilitating precise control of the lifting position of the tooling platform 2.

[0026] Further, in this embodiment, if Figure 1 and Figure 4 As shown, a torsion spring is arranged inside the second rotating rod 20, and the torsion spring is used to cooperate with the clamping assembly to complete the clamping action. When the driving assembly drives the tooling platform 2 to slowly descend, the upper rubber wheel 22 on the L-shaped rod 21 first touches the top of the printer housing. Under the action of the second rotating rod 20, the L-shaped rod 21 rotates along the second rotating rod 20, so that the lower rubber wheel 23 clamps the side wall of the outer side of the printer. When clamping, the upper rubber wheel 22 abuts against the upper surface of the printer housing, and the lower rubber wheel 23 abuts against the side of the workpiece. By setting the pressure rod 19 and the L-shaped rod 21 for use in combination, the printer housing can be clamped in the horizontal direction and the vertical direction at the same time, so that the printer housing and the sealing ring 4 fit more closely. By setting the upper rubber wheel 22 and the lower rubber wheel 23 for use in combination, the clamping assembly and the printer housing are prevented from being hard squeezed, thereby avoiding the generation of scratches or dents, and improving the product quality of the printer housing.

[0027] Further, in this embodiment, if Figure 1-Figure 3As shown, a plurality of filling blocks 18 are installed on the surface of the test bench 3, and the filling blocks 18 are all located on the inner side of the sealing ring 4. By setting up a plurality of filling blocks 18, when the outer shell is placed on the test bench 3 during air tightness testing, the filling blocks 18 can enter the inner space of the outer shell, thereby reducing the volume of the gas contained in the outer shell, thereby reducing the amount of gas required for inflation during air tightness testing, speeding up the speed of inflation and pressurization operations, and improving testing efficiency.

[0028] Working principle of the utility model: in actual use, the servo motor 17 is controlled to rotate forward, so that the screw rod 16 rotates, and then drives the two racks 12 to move toward the middle of the base 1, and the rack 12 drives the second gear 11 to rotate. Under the action of the first rotating rod 14 and the sleeve 8, the first gear 10 drives the sleeve rod 7 to move slowly upward along the sleeve 8 synchronously, and then drives the tooling platform 2 to move slowly upward. When it moves to a suitable position, the opening of the printer housing is turned downward and placed on the sealing ring 4 on the detection table 3, and the servo motor 17 is reversed. Under the cooperation of the first gear 10, the second gear 11 and the rack 12, the tooling platform 2 slowly descends and drives the holding part to press the printer. The printer housing is clamped and fixed, and the first gear 10, the second gear 11, the rack 12 and the first rotating rod 14 are arranged to cooperate with each other to realize the synchronous and stable lifting and lowering of the tooling platform 2, so that the tooling platform 2 is kept horizontal during the lifting process, thereby ensuring that the pressing degree of each pressing member 5 on the tooling platform 2 on the housing is the same. By arranging the servo motor 17 and the screw rod 16 for cooperation, the lifting speed of the tooling platform 2 is relatively slow and gentle, avoiding the tooling platform 2 from lifting too fast, causing the pressing member 5 to impact the printer housing, thereby preventing the printer housing from being dented under the impact, avoiding damage to the housing, and also facilitating the precise control of the lifting position of the tooling platform 2;

[0029] When the driving assembly drives the tooling platform 2 to slowly descend, the upper rubber wheel 22 on the L-shaped rod 21 first touches the top of the printer housing. Under the action of the second rotating rod 20, the L-shaped rod 21 rotates along the second rotating rod 20, so that the lower rubber wheel 23 clamps the side wall of the outer side of the printer. When clamping, the upper rubber wheel 22 abuts against the upper surface of the printer housing, and the lower rubber wheel 23 abuts against the side of the workpiece. By setting the pressure rod 19 and the L-shaped rod 21 for use in conjunction, the printer housing can be clamped in the horizontal direction and the vertical direction at the same time, so that the printer housing and the sealing ring 4 fit more closely. By setting the upper rubber wheel 22 and the lower rubber wheel 23 for use in conjunction, the clamping assembly and the printer housing are prevented from being hard squeezed, thereby avoiding scratches or dents, and improving the product quality of the printer housing.

[0030] By providing a plurality of filling blocks 18, when the shell is placed on the test bench 3 during air tightness testing, the filling blocks 18 can enter the internal space of the shell, thereby reducing the volume of the gas contained in the shell, thereby reducing the amount of gas required for inflation during air tightness testing, speeding up the inflation and pressurization operation, and improving the testing efficiency.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A printer housing air tightness inspection device, comprising a base (1) and a tooling platform (2), characterized in that: The four corners of the top of the base (1) are fixedly provided with sleeves (8), and a sleeve rod (7) is slidably sleeved inside each of the sleeves (8). The top of the sleeve rod (7) is fixedly connected to the bottom of the tooling platform (2). The top of the base (1) is fixedly connected to a plurality of pillars (13), and the other ends of the pillars (13) are fixedly connected to the bottom of the detection platform (3). The detection platform (3) is provided with a placement groove, and a sealing ring (4) that can be aligned with the edge of the printer housing is installed on the placement groove. The top of the base (1) is provided with a driving mechanism for driving the tooling platform (2) to be synchronously raised and lowered. The drive assembly comprises two racks (12) slidably mounted on the top of the base (1), the top of each rack (12) is meshedly connected with a second gear (11), the interior of the second gear (11) is fixedly connected with a first rotating rod (14), both ends of the first rotating rod (14) are fixedly connected with a first gear (10), each rack (12) is fixedly provided with a fixing block (15) on one side facing the second gear (11), the two fixing blocks (15) are threadedly connected to a screw rod (16), and one end of the screw rod (16) is fixedly connected with a servo motor (17); A holding member (5) is fixedly mounted on the tooling platform (2). A through hole (6) for allowing the detection platform (3) to pass through is provided at the center of the tooling platform (2). A plurality of holding members (5) are provided along the edge of the through hole (6). Each holding member (5) is provided with a plurality of clamping assemblies for clamping the printer housing on both sides. The clamping assemblies include a pressure rod (19) fixedly mounted on the top of the pressure member (5), an L-shaped rod (21) rotatably connected to the pressure rod (19) via a second rotating rod (20), and an upper rubber wheel (22) and a lower rubber wheel (23) rotatably mounted on both ends of the L-shaped rod (21).

2. The printer housing air tightness inspection device according to claim 1, characterized in that: The testing platform (3) is provided with an air filling hole, which is located inside the sealing ring (4) and is connected to an air filling pump via a pipeline.

3. The printer housing air tightness inspection device according to claim 1, characterized in that: The sleeve (8) is provided with an arc-shaped opening (9), the sleeve rod (7) is provided with saw teeth on a side facing the arc-shaped opening (9), and the first gear (10) is meshed with the saw teeth on the sleeve rod (7) through the arc-shaped opening (9).

4. The printer housing air tightness inspection device according to claim 1, characterized in that: The screw rod (16) is rotatably mounted on a shaft seat provided on the base (1), and the servo motor (17) drives the screw rod (16) to rotate.

5. The device for inspecting air tightness of a printer housing according to claim 4, characterized in that: The screw rod (16) is a double-headed screw rod, and both ends of the screw rod (16) are provided with threads, and the directions of the threads at the two ends are opposite.

6. The device for inspecting air tightness of a printer housing according to claim 1, characterized in that: A torsion spring is arranged inside the second rotating rod (20), and the torsion spring is used to cooperate with the clamping assembly to complete the clamping action.

7. The device for inspecting air tightness of a printer housing according to claim 2, characterized in that: A plurality of filling blocks (18) are installed on the surface of the detection platform (3), and the filling blocks (18) are all located on the inner side of the sealing ring (4).

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