Volatilization preventing uniform coating device for cyclohexanone adhesive-bonding assembly

Abstract

A volatilization preventing uniform coating device for cyclohexanone adhesive-bonding assembly comprises a cyclohexanone liquid storage bottle, a base, an automatic liquid supplementing unit and volatilization preventing uniformly glue-coating units, wherein the base is provided with a main liquid storage groove and side liquid storage grooves, and the main liquid storage groove communicates with the side liquid storage grooves through phase lines; the automatic liquid supplementing unit is in sealed butt joint with the main liquid storage groove; the volatilization preventing uniformly glue-coating units are installed on the side liquid storage grooves in a sealed mode; the automatic liquid supplementing unit can supplement liquid for the main liquid storage groove automatically; a glue-coating mandrel and a sponge in each volatilization preventing uniformly glue-coating unit are arranged in the corresponding side liquid storage groove; the glue-coating mandrels are sleeved with the sponges; center holes in side sealing pads correspond to the outer diameter portions of tubes to be coated with glue; the diameter of the upper section of the glue-coating mandrels corresponds to the inner diameter of the tubes to be coated with glue; and the center holes of the side sealing pads are covered in a non-work state. By means of the volatilization preventing uniform coating device for cyclohexanone adhesive-bonding assembly, the contact area between cyclohexanone and outside air is greatly reduced, cyclohexanone can be effectively prevented from volatilizing, the utilization rate of raw materials is increased, the working environment is improved, and the safety and reliability in production are improved.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to the bonding and assembling technology of medical plastic parts such as medical infusion sets and blood collection needles. Background technique [0002] Infusion has been widely accepted by doctors and patients as the most conventional treatment. Such as Figure 11 As shown, the infusion set includes a liquid inlet hose 9, a drip bucket 10 (also known as Murphy's tube) and a liquid outlet hose 11, and the two ends of the drip bucket 10 are bonded and solidified with cyclohexanone respectively. The liquid hose 9 and the liquid outlet hose 11 are hermetically connected as a whole; during the adhesive assembly process between the liquid inlet hose 9 and the liquid outlet hose 11 and the two ends of the drip funnel 10 respectively, the adhesive used The bonding agent is cyclohexanone. As we all know, cyclohexanone is a colorless and transparent liquid with a strong pungent smell, and...

AI Technical Summary

Problems solved by technology

[0004] 1) The opening of the glassware for storing cyclohexanone (adhesive) is too large, and cyclohexanone is exposed to the air for a long time during the production process. According to the physical and chemical properties of cyclohexanone, cyclohexanone is volatile, and a wide-mouthed container is used as Cyclohexanone storage utensils not only cause excessive volatilization of cyclohexanone, reduce the actual utilization rate of cyclohexanone, cause excessive waste of cyclohexanone, increase production costs, and cyclohexanone volatilized in the workshop will pollute the working environment , during the whole pasting process, cyclohexanone is always in contact with the air, which is easy to deteriorate and emits a more pungent smell. The operator will continue to passively inhale a large amount of cyclohexanone during operation, which is extremely harmful to their health

[0005] 2) Since the production workshop of medical infusion sets must be a 100,000-class purification workshop, its airtightness is very good, and a large amount of cyclohexanone volatilizes in the entire workshop during bonding work. When the concentration of cyclohexanone in the room is too high, it is easy to cause a fire , when the concentration reaches the extreme value, it will also cause an explosion. Therefore, the existing bonding production must be regularly ventilated and strictly managed, otherwise unpredictable consequences will occur, which will greatly increase the difficulty and cost of production management, and in production There are major safety hazards in the process, and managers and operators are all worried about going to work

[0006] 3) When bonding, when the liquid inlet hose 9 is extended into the glass vessel to dip cyclohexanone (taking the liquid inlet hose 9 as an example, the same is true for the liquid outlet hose 11), the outer surface of the liquid inlet hose 9 Cyclohexanone will be adhered to the surface of the liquid inlet hose 9 and the surface of the inner hole. The inner surface of liquid hose 9 is also attached to cyclohexanone, which not only causes the waste of cyclohexanone raw material, but also after the infusion set is produced, the cyclohexanone attached to the inner hole wall of liquid inlet hose 9 will volatilize and diffuse in the infusion solution. In the inner cavity of the infusion set 9, even if the infusion set 9 is placed to exhaust air for a long time, a small amount of cyclohexanone gas will still remain inside the infusion set 9. When the infusion set 9 is in use, the residual cyclohexanone on the inner wall will enter In the human body, it seriously damages people's health and even causes death, which is a great safety hazard

[0007] 4) The direct dipping method is likely to cause the coating layer of cyclohexanone on the outer surface of the liquid inlet hose 9 to be uneven up and down, and it is difficult to achieve a satisfactory bonding effect, which greatly reduces the quality of the product

Images