Pulse type jet dispensing mechanism

Abstract

The invention discloses a pulse type jet dispensing mechanism which comprises a shell, a glue storage cylinder and an air storage cylinder. The shell is a transversely-arranged cylinder, a plurality of glue spraying holes are formed in the top of the shell and penetrate through the shell wall of the shell, and a glue inlet hole is formed in the bottom of the shell. The glue storage barrel is rotationally arranged in the shell, the outer wall of the glue storage barrel is slidably attached to the inner wall of the shell, and a plurality of sets of glue storage holes penetrating inside and outside are formed in the barrel wall of the glue storage barrel in a surrounding mode. The air storage cylinder is coaxially arranged in the glue storage cylinder, the inner wall of the glue storage cylinder is in sliding fit with the outer wall of the air storage cylinder, and a plurality of air injection holes are formed in the air storage cylinder. An air chamber is arranged in the air reservoir, the air injection holes are communicated with the air chamber, are linearly arranged along the axial direction of the air reservoir, penetrate through the shell wall of the air reservoir, and correspond to the glue injection holes. The mechanism provided by the invention is simple in structure, and a plurality of dotted glue lines can be sprayed on a plurality of pencil lead grooves of a pencil sheet at the same time; the glue spraying process is changed into pulse type continuous spot injection, and the glue spraying amount is accurate and controllable; no glue overflows during shutdown; and glue can be effectively prevented from solidifying to block the dispensing head.

Description

Technical Field

[0001] The invention belongs to the field of glue dispensing machines, and in particular relates to a pulse jet glue dispensing mechanism. Background Art

[0002] During the production process of pencils, pencil leads need to be installed. Lead grooves are carved on the wooden board. Special glue dispensing equipment is used to evenly apply glue in the lead grooves of the pencil board. The pencil leads are inserted into them and covered with another wooden board to form the wooden shaft of the pencil.

[0003] After the plate is grooved, glue needs to be evenly applied in multiple lead core grooves of the plate to bond the lead core. Since the lead core grooves are close to each other and the plate is circulated on a high-speed grooved and glued integrated machine, the glue dispensing mechanism on the market cannot meet the demand well.

[0004] The dispensing mechanisms on the market have the following problems: 1. The glue is easy to solidify, blocking the dispensing port and is difficult to clean; 2. The glue quantity is not accurately controlled, and there will be glue overflow after shutdown. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a pulse jet dispensing mechanism, comprising a shell, a glue storage cylinder, and an air storage cylinder.

[0006] The shell is a horizontally arranged cylinder, a plurality of glue spraying holes are arranged on the top of the shell, the glue spraying holes penetrate through the shell wall, and a glue inlet hole is arranged on the bottom of the shell.

[0007] Furthermore, the glue spraying holes are arranged along an axial straight line of the shell.

[0008] The rubber storage cylinder is rotatably arranged in the shell, the outer wall of the rubber storage cylinder is slidably fitted with the inner wall of the shell, and a plurality of groups of rubber storage holes penetrating inside and outside are arranged around the wall of the rubber storage cylinder.

[0009] Furthermore, each group of the glue storage holes can correspond to the glue spraying holes respectively as the glue storage cylinder rotates.

[0010] The air storage cylinder is coaxially arranged in the rubber storage cylinder, the inner wall of the rubber storage cylinder is slidably fitted with the outer wall of the air storage cylinder, and the air storage cylinder is provided with a plurality of air injection holes.

[0011] An air chamber is arranged in the air storage cylinder, and the air injection holes are all communicated with the air chamber. The air injection holes are arranged along the axial straight line of the air storage cylinder, the air injection holes penetrate the shell wall of the air storage cylinder, and the air injection holes correspond to the glue injection holes.

[0012] Furthermore, a sealing plate with holes is provided on the left side of the shell, and the air chamber passes through the sealing plate with holes.

[0013] Furthermore, the end cover is provided at the right opening of the shell, the rubber storage cylinder passes through the end cover, and the end cover rotatably fixes the rubber storage cylinder in the shell.

[0014] The invention provides a pulse-type spray glue dispensing mechanism, which makes the glue spraying process into pulse micro-droplet high-speed point shooting, and drives the honeycomb glue storage cylinder to rotate by a servo motor to bring the glue droplets temporarily stored in the glue storage hole array into the cylinder shell from the glue inlet, and then the glue droplets are temporarily sealed in a closed space composed of the inner wall of the shell, a plurality of glue storage holes penetrating inside and outside the glue storage cylinder, and the outer wall of the gas storage cylinder. When the glue storage holes on the glue storage cylinder rotate to the same angle as the glue spraying holes of the shell and the gas injection holes of the gas storage cylinder, the glue droplets in the glue storage holes at this location are sprayed out by the compressed air in the gas storage cylinder. The pulse-type spray glue dispensing mechanism has the following advantages: 1. The structure is simple, the hole spacing can be arranged very close, and a plurality of dot-shaped glue lines can be sprayed on multiple pencil plates at the same time; 2. It can rotate accurately at high speed and continuous quantitatively, so that the glue spraying process becomes pulse-type continuous point shooting, the glue spraying amount is accurately controllable, and there will be no glue overflow when the machine is stopped. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the appearance structure of a pulse jet dispensing mechanism of the present invention;

[0017] Figure 2 A bottom view of the appearance structure of a pulse jet dispensing mechanism of the present invention;

[0018] Figure 3 It is a longitudinal cross-sectional view of a pulse jet dispensing mechanism of the present invention.

[0019] Figure 4 It is a transverse cross-sectional view of a pulse jet dispensing mechanism of the present invention.

[0020] Explanation of the reference numerals in the figure: 1. Shell, 11. Glue spray hole, 12. Glue inlet hole, 13. Sealing plate with holes, 2. Glue storage cylinder, 21. Glue storage hole, 3. Air storage cylinder, 31. Jet hole, 32. Air chamber, 4. End cover. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] like Figure 1-Figure 4 As shown, an embodiment of the present invention is a pulse jet dispensing mechanism, which includes a shell 1, a glue storage cylinder 2, and an air storage cylinder 3.

[0024] The shell 1 is a horizontally arranged cylinder. A plurality of glue spray holes 11 are arranged on the top of the shell 1 . The glue spray holes 11 penetrate the shell wall of the shell 1 . A glue inlet hole 12 is arranged on the bottom of the shell 1 . The glue inlet hole 12 is used to input glue.

[0025] Preferably, the glue spray hole 11 is arranged along the axial straight line of the shell 1, and the glue spray hole 11 is used to spray glue. The glue spray hole 11 arranged in this way has a simple structure, the hole spacing can be arranged very closely, and several dot-shaped glue lines can be sprayed at the same time.

[0026] The rubber storage cylinder 2 can be driven by a servo motor. The rubber storage cylinder 2 is rotatably arranged in the shell 1. The outer wall of the rubber storage cylinder 2 is slidably fitted with the inner wall of the shell 1. A plurality of groups of rubber storage holes 21 penetrating inside and outside are arranged around the wall of the rubber storage cylinder 2.

[0027] Preferably, each group of glue storage holes 21 can correspond to the glue spraying holes 11 respectively as the glue storage cylinder 2 rotates.

[0028] The air storage cylinder 3 is coaxially arranged in the rubber storage cylinder 2 , the inner wall of the rubber storage cylinder 2 is slidably fitted with the outer wall of the air storage cylinder 3 , and a plurality of air injection holes 31 are arranged on the air storage cylinder 3 .

[0029] An air chamber 32 is provided in the air storage cylinder 3 , and the jet holes 31 are all connected to the air chamber 32 . The jet holes 31 are arranged along the axial straight line of the air storage cylinder 3 , and the jet holes 31 penetrate the shell wall of the air storage cylinder 3 . The jet holes 31 correspond to the glue spraying holes 11 .

[0030] Preferably, a sealing plate 13 with holes is provided on the left side of the housing 1, and the air chamber 32 passes through the sealing plate 13 with holes. The air chamber 32 is connected to an external air source, and a high air pressure state is always maintained in the air chamber 32.

[0031] The honeycomb glue storage cylinder 3 is driven by a servo motor to rotate and bring the glue droplets temporarily stored in the glue storage hole 21 array into the cylindrical shell 1 from the glue inlet 12, and then the glue droplets are temporarily sealed in a closed space composed of the inner wall of the shell 1, the glue storage holes 21 that penetrate inside and outside the glue storage cylinder 2, and the outer wall of the gas storage cylinder 3. When the glue storage hole 21 on the glue storage cylinder 2 rotates to the same angle as the glue spray hole 11 of the shell 1 and the jet hole 31 of the gas storage cylinder 3, the glue droplets in the glue storage hole 21 are sprayed out by the high-pressure air in the gas storage cylinder 3, forming a pulse droplet high-speed point shooting. The glue storage cylinder 3 can be precisely rotated at high speed and continuously and quantitatively, so that the glue spraying process becomes a pulse continuous point shooting, the glue spraying amount is precisely controllable, there will be no glue overflow when the machine is stopped, and the glue is blocked from contacting with the air to prevent the glue from solidifying when contacting the air.

[0032] Preferably, an end cap 4 is provided at the right opening of the shell 1, and the rubber storage cylinder 2 passes through the end cap 4. The end cap 4 rotatably fixes the rubber storage cylinder 2 in the shell 1. After removing the end cap 4, the rubber storage cylinder 2 can be pulled out of the shell 1 for easy maintenance and cleaning.

[0033] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pulse jet dispensing mechanism, characterized in that: It comprises a housing (1), a rubber storage cylinder (2), and an air storage cylinder (3); The outer shell (1) is a horizontally arranged cylinder, a plurality of glue spray holes (11) are provided on the top of the outer shell (1), the glue spray holes (11) penetrate the shell wall of the outer shell (1), and a glue inlet hole (12) is provided on the bottom of the outer shell (1); The rubber storage cylinder (2) is rotatably arranged in the outer shell (1), the outer wall of the rubber storage cylinder (2) is slidably fitted with the inner wall of the outer shell (1), and a plurality of groups of rubber storage holes (21) penetrating inside and outside are arranged on the wall of the rubber storage cylinder (2); The gas storage cylinder (3) is coaxially arranged in the rubber storage cylinder (2), the inner wall of the rubber storage cylinder (2) is slidably fitted with the outer wall of the gas storage cylinder (3), and the gas storage cylinder (3) is provided with a plurality of air injection holes (31); An air chamber (32) is provided in the air storage cylinder (3), and the air injection holes (31) are all connected to the air chamber (32). The air injection holes (31) are arranged along an axial straight line of the air storage cylinder (3), and the air injection holes (31) penetrate the shell wall of the air storage cylinder (3). The air injection holes (31) correspond to the glue injection holes (11).

2. A pulse jet dispensing mechanism according to claim 1, characterized in that: The glue spraying holes (11) are arranged along an axial straight line of the housing (1).

3. The pulse jet dispensing mechanism according to claim 1, characterized in that: Each group of the glue storage holes (21) can correspond to the glue spraying holes (11) respectively as the glue storage cylinder (2) rotates.

4. The pulse jet dispensing mechanism according to claim 1, characterized in that: A sealing plate (13) with holes is provided on the left side of the housing (1), and the air chamber (32) passes through the sealing plate (13) with holes.

5. The pulse jet dispensing mechanism according to claim 1, characterized in that: The end cover (4) is provided at the right opening of the outer shell (1), the rubber storage cylinder (2) passes through the end cover (4), and the end cover (4) rotatably fixes the rubber storage cylinder (2) in the outer shell (1).

Images