A pen sleeve detection device for watercolor pen processing

Abstract

This utility model relates to the field of watercolor pen production and testing technology, specifically a pen sleeve testing device for watercolor pen processing. It includes a machine body with a testing mechanism on its side. A stepper motor is installed inside the machine body, and the output shaft of the stepper motor is fixedly connected to a pen sleeve fixing mechanism. This utility model uses twenty-four stations on the upper end of the chassis for airtightness testing to fix the pen sleeves. The testing slots have stepped support surfaces to support pen sleeves of different diameters. During testing, the test tube first contacts the sealing gasket inside the pen sleeve, and then the top plate moves down to seal it. This allows for adaptation to pen sleeves of different depths. The testing mechanism and pen sleeve fixing mechanism are highly adaptable to airtightness testing of different pen sleeve models. After testing, the changes in the phenolphthalein test paper can be observed from below, providing a more intuitive test result and effectively improving testing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of watercolor pen production and testing technology, specifically a pen sleeve testing device for watercolor pen processing. Background Technology

[0002] A watercolor pen cap (also called a pen cover) is a small cover that fits over the tip of a watercolor pen. It is usually made of plastic and has several important functions: preventing the nib from drying out, protecting the nib, preventing ink spills, and facilitating storage and organization. Watercolor pen caps contain a sealing block. When the pen tip is inserted into the cap, the tip enters the sealing block for sealing. After the pen tip is pressed into the cap, the sealing block also presses against the through hole at the tip tip to seal it, preventing air from entering the cap and drying the pen. However, due to production batch issues, the sealing block may not be perfectly compatible with the cap body, resulting in a shorter lifespan for the watercolor pen. Current technology for testing the airtightness of pen caps generally uses the differential pressure method, which involves placing the pen cap under test into a specially designed test chamber with a sealing ring. This testing method is inefficient and the results are not intuitive. Utility Model Content

[0003] To address the shortcomings of existing technologies, such as the low efficiency and lack of intuitiveness of pressure differential testing for pen cap airtightness, this invention proposes a pen cap testing device for watercolor pen manufacturing.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a pen sleeve detection device for watercolor pen processing, including a machine body, a detection mechanism is provided on the side of the machine body, a stepper motor is installed inside the machine body, and a pen sleeve fixing mechanism is fixedly connected to the output shaft of the stepper motor. The pen cap fixing mechanism includes a chassis. The upper end of the chassis has twenty-four sets of detection slots arranged in a circular array. Inside each detection slot are three sets of support surfaces arranged in a stepped shape. Phenolphthalein test paper is adhered to the bottom of each detection slot. A clamping block is slidably connected to the upper end of each detection slot. Two sets of clamping blocks are symmetrically arranged. A compression spring is adhered and fixed to the outer side of each clamping block. The other end of the compression spring is embedded and fixed to the detection slot.

[0005] Preferably, the testing mechanism includes a fixed frame welded and fixed to one side of the upper end of the machine body, a cylinder is installed at the upper end of the fixed frame, and a top plate is fixedly installed at the piston end of the cylinder.

[0006] Preferably, the top plate has a limit slider integrally formed on both sides, and a limit groove is formed on the inner side of the fixing frame. The top plate is slidably connected to the inner side of the fixing frame through the cooperation of the limit slider and the limit groove, and a through hole is formed at the end of the top plate.

[0007] Preferably, the top plate is slidably inserted with a test tube through a through hole. The top of the test tube has a connecting surface integrally formed, and a tension spring is bonded to the lower end of the connecting surface. The lower end of the tension spring is embedded in the upper end of the top plate. The top of the test tube has a connecting tube integrally formed, and the lower end of the test tube has a spherical water spray part with micropores integrally formed.

[0008] Preferably, the side wall of the machine body is provided with several sets of heat dissipation slots arranged in a ring array, and the output shaft of the stepper motor is connected to the chassis via a flat key.

[0009] Preferably, the detection slot has a limiting slide rail, and the lower end of the clamping block has two sets of symmetrically arranged limiting slide bars. The clamping block is slidably connected to the upper end of the detection slot through the cooperation of the limiting slide bars and the limiting slide rail.

[0010] Preferably, the inner side of the clamping block is provided with a guide surface, and the side wall of the detection slot is provided with a guide groove, and the compression spring is disposed in the guide groove.

[0011] The advantages of this utility model are: This invention features 24 stations on the upper part of the chassis for airtightness testing. Before testing, all pen caps to be tested can be inserted into the testing slots. The testing slots have stepped support surfaces to support pen caps of different diameters, offering strong adaptability. During insertion, guide surfaces on the clamping blocks provide guidance. After insertion, the pen caps are clamped between two clamping blocks by the elastic force of a compression spring. The testing mechanism, driven by a cylinder on the side, first sends a spherical water spray nozzle at the end of the test tube into the pen cap. Then, the top plate seals the upper end of the pen cap, and finally, a small amount of ammonia solution is sprayed out by the spherical water spray nozzle. If the pen cap is not airtight enough, water seeps from the bottom of the pen cap and drips onto phenolphthalein test paper, turning the test paper red, providing a clear test result. If the airtightness is good, the ammonia solution in the pen cap will air dry naturally and be put into use. This improves testing efficiency and solves the problems of low efficiency and unintuitive results when using differential pressure to test pen cap airtightness. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the testing mechanism of this utility model; Figure 3 This is a schematic diagram of the chassis structure of this utility model; Figure 4 This utility model Figure 3 Enlarged view of section A; Figure 5 This is a schematic diagram of the structure of the phenolphthalein test paper of this utility model; Figure 6 This is a schematic diagram of the top plate of this utility model; Figure 7 This is a schematic diagram of the pen cap fixing mechanism of this utility model.

[0014] In the diagram: 1. Machine body; 2. Detection mechanism; 3. Pen cap fixing mechanism; 101. Stepper motor; 102. Heat dissipation channel; 201. Fixing frame; 202. Cylinder; 203. Top plate; 204. Limiting slider; 205. Limiting slide groove; 206. Through hole; 207. Test tube; 208. Connecting surface; 209. Tension spring; 210. Connecting pipe; 211. Spherical water spray unit; 301. Chassis; 302. Detection slot; 303. Support surface; 304. Phenolphthalein test paper; 305. Clamping block; 306. Compression spring; 307. Limiting slide rail; 308. Limiting slide bar; 309. Guide surface; 310. Guide groove. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0016] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail. This application discloses a device for detecting pen caps used in watercolor pen manufacturing. (Refer to...) Figure 1 , Figure 5 and Figure 7 A pen sleeve detection device for watercolor pen processing includes a machine body 1, a detection mechanism 2 is provided on the side of the machine body 1, a stepper motor 101 is installed inside the machine body 1, and a pen sleeve fixing mechanism 3 is fixedly connected to the output shaft of the stepper motor 101. The pen cap fixing mechanism 3 includes a base 301. The upper end of the base 301 has twenty-four sets of detection slots 302 arranged in a circular array. Inside the detection slots 302, there are three sets of support surfaces 303 arranged in a stepped shape. Phenolphthalein test paper 304 is glued to the bottom of the detection slots 302. Clamping blocks 305 are slidably connected to the upper end of the detection slots 302. Two sets of clamping blocks 305 are symmetrically arranged. Compression springs 306 are glued and fixed to the outer side of the clamping blocks 305. The other end of the compression springs 306 is embedded and fixed to the detection slots 302.

[0017] Reference Figure 1 and Figure 2 The testing mechanism 2 includes a fixed frame 201 welded and fixed to one side of the upper end of the machine body 1. A cylinder 202 is installed on the upper end of the fixed frame 201. A top plate 203 is fixedly installed on the piston end of the cylinder 202. By setting the cylinder 202, the top plate 203 can be driven to move up and down to perform air tightness testing. A sealing ring is installed on the lower end of the top plate 203, which can press against the upper part of the pen cap to seal it and prevent insufficient pressure from causing gaps between the sealing block inside the pen cap and the pen cap body. This can simulate the effect of the watercolor pen tip pressing against the sealing block inside the pen tip. Reference Figure 2 and Figure 6 The top plate 203 has integrally formed limiting sliders 204 on both sides, and the inner side of the fixing frame 201 has a limiting groove 205. The top plate 203 is slidably connected to the inner side of the fixing frame 201 through the cooperation of the limiting sliders 204 and the limiting groove 205. The end of the top plate 203 has a through hole 206. By setting the limiting sliders 204 and the limiting groove 205, the top plate 203 can be moved stably to prevent the detection mechanism 2 from being unable to be inserted into the pen cap to be detected. Reference Figure 2 and Figure 6The top plate 203 is slidably inserted with a test tube 207 through a through hole 206. The top of the test tube 207 is integrally formed with a connecting surface 208. A tension spring 209 is bonded to the lower end of the connecting surface 208. The lower end of the tension spring 209 is embedded in the upper end of the top plate 203. The top of the test tube 207 is integrally formed with a connecting tube 210. The lower end of the test tube 207 is integrally formed with a spherical water spray part 211 with micropores. During testing, the test tube 207 will first contact the sealing gasket inside the pen cap. Then the top plate 203 will move down to seal. This can adapt to pen caps of different depths. The connecting tube 210 is used to connect the ammonia solution. The micropores of the spherical water spray part 211 atomize the ammonia solution and spray it out, effectively controlling the amount of ammonia solution sprayed out and reducing the drying of the ammonia solution in the later stage. Reference Figure 1 and Figure 3 The side wall of the machine body 1 is provided with several sets of heat dissipation slots 102 arranged in a ring array. The output shaft of the stepper motor 101 is connected to the chassis 301 through a flat key. The stepper motor 101 rotates 15° each time, so that pen caps at different workstations can be inspected. The heat dissipation slots 102 can dissipate the heat generated by the stepper motor 101 during operation in a timely manner, so that the stepper motor 101 can operate stably. Reference Figure 1 and Figure 7 The detection slot 302 has a limiting slide rail 307. The lower end of the clamping block 305 is integrally formed with two sets of symmetrically arranged limiting slide bars 308. The clamping block 305 is slidably connected to the upper end of the detection slot 302 through the cooperation of the limiting slide bars 308 and the limiting slide rail 307. By setting the limiting slide bars 308 and the limiting slide rail 307, the clamping block 305 can move smoothly. Reference Figure 3 and Figure 4 The clamping block 305 has a guide surface 309 on its inner side, and the detection slot 302 has a guide groove 310 on its side wall. The compression spring 306 is set in the guide groove 310. The guide surface 309 can guide the pen cap when it is inserted.

[0018] Working principle: Before testing, the top plate 203 needs to be moved to the top using the cylinder 202. Then, the pump body from the ammonia solution source is connected to the connecting pipe 210 at the top of the test tube 207. After that, all the pen caps to be tested are inserted into the test slot 302 from the top of the chassis 301, ensuring that the lower end of the pen cap is against the support surface 303. Then, the equipment is started to begin testing. At this time, the cylinder 202 will retract, and the spherical water spray part 211 at the end of the test tube 207 enters the pen cap first. Then, the top plate 203 seals the upper end of the pen cap. Finally, a small amount of ammonia solution is sprayed out by the spherical water spray part 211 for testing. After testing one pen cap, the cylinder 202 extends, and the stepper motor 101 rotates 15° to test the next pen cap. After the test is completed, the phenolphthalein test paper 304 is observed from the bottom. If it turns red, the air tightness test fails. If it does not change color, the air tightness is good. After the test is completed, the pen cap is removed and dried.

[0019] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A device for detecting pen caps used in watercolor pen processing, comprising a machine body (1), characterized in that: The side of the machine body (1) is provided with a detection mechanism (2), and a stepper motor (101) is installed inside the machine body (1). The output shaft of the stepper motor (101) is fixedly connected to a pen sleeve fixing mechanism (3). The pen cap fixing mechanism (3) includes a chassis (301). The upper end of the chassis (301) is provided with twenty-four sets of detection slots (302) arranged in a circular array. The inside of the detection slots (302) is provided with three sets of support surfaces (303) arranged in a stepped shape. Phenolphthalein test paper (304) is glued to the bottom of the detection slots (302). A clamping block (305) is slidably connected to the upper end of the detection slots (302). Two sets of clamping blocks (305) are symmetrically arranged. A compression spring (306) is glued and fixed to the outside of the clamping blocks (305). The other end of the compression spring (306) is embedded and fixed to the detection slots (302).

2. The device for detecting pen caps used in watercolor pen processing according to claim 1, characterized in that: The testing mechanism (2) includes a fixed frame (201) welded and fixed to one side of the upper end of the machine body (1). A cylinder (202) is installed on the upper end of the fixed frame (201), and a top plate (203) is fixedly installed on the piston end of the cylinder (202).

3. The watercolor pen sleeve detection device according to claim 2, characterized in that: The top plate (203) has integrally formed limit sliders (204) on both sides, and the inner side of the fixing frame (201) has a limit groove (205). The top plate (203) is slidably connected to the inner side of the fixing frame (201) through the cooperation of the limit sliders (204) and the limit groove (205), and the end of the top plate (203) has a through hole (206).

4. The pen sleeve detection device for watercolor pen processing according to claim 3, characterized in that: The top plate (203) is slidably inserted with a test tube (207) through a through hole (206). The top of the test tube (207) is integrally formed with a connecting surface (208). A tension spring (209) is bonded to the lower end of the connecting surface (208). The lower end of the tension spring (209) is embedded in the upper end of the top plate (203). The top of the test tube (207) is integrally formed with a connecting tube (210). The lower end of the test tube (207) is integrally formed with a spherical water spray part (211) with micropores.

5. The pen sleeve detection device for watercolor pen processing according to claim 1, characterized in that: The side wall of the machine body (1) is provided with several sets of heat dissipation slots (102) arranged in a ring array, and the output shaft of the stepper motor (101) is connected to the chassis (301) via a key.

6. The pen sleeve detection device for watercolor pen processing according to claim 1, characterized in that: The detection slot (302) is provided with a limiting slide rail (307), and the lower end of the clamping block (305) is integrally formed with two sets of symmetrically arranged limiting slide bars (308). The clamping block (305) is slidably connected to the upper end of the detection slot (302) through the cooperation of the limiting slide bars (308) and the limiting slide rail (307).

7. The device for detecting pen caps used in watercolor pen processing according to claim 1, characterized in that: The clamping block (305) has a guide surface (309) on its inner side, and the detection slot (302) has a guide groove (310) on its side wall, and the compression spring (306) is disposed in the guide groove (310).

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