Rubber band scraping nozzle with anti-scalding structure

Abstract

The utility model discloses a rubber band scraping nozzle with an anti-scalding structure, and belongs to the technical field of hot melt adhesive discharging devices. Comprising a scraping nozzle body, a glue inlet and an air inlet are formed in the top of the scraping nozzle body, a glue outlet and an air outlet are formed in the bottom of the scraping nozzle body, a glue channel and an air channel are arranged in the scraping nozzle body, one end of the glue channel is communicated with the glue inlet, and the other end of the glue channel is communicated with the glue outlet; one end of the gas channel is communicated with the gas inlet, and the other end is communicated with the gas outlet; a linear rubber band scraping groove is further formed in the bottom of the scraping nozzle body, the glue outlet is formed in the top wall of the rubber band scraping groove, and the air outlet is formed in the lateral upper portion of the rubber band scraping groove and located in the vertical plane where the rubber band scraping groove is located. When the rubber band scraping nozzle is used for coating hot melt adhesive, the rubber band can move forwards in the rubber band scraping groove all the time, the air outlet can blow air to the lower portion to blow the spandex rubber band to swing up and down, the spandex rubber band can be prevented from making contact with the rubber band scraping groove for a long time, and then the spandex rubber band is prevented from being ironed off by the rubber band scraping nozzle.

Description

Technical Field

[0001] The utility model belongs to the technical field of hot melt adhesive dispensing devices, in particular to a rubber scraper with an anti-scalding structure. Background Art

[0002] The hot melt adhesive spraying process is used to coat the colloid on a certain base material for pasting and laminating related materials. These are widely used in non-woven fabrics, papermaking, household paper, baby and women's products, automobiles, packaging, sanitary materials and other industries. The hot melt adhesive spray gun device based on this process is a well-known technology. Generally, the hot melt adhesive spray gun device includes a spray valve and a scraper nozzle. The hot melt adhesive is pressed into the scraper nozzle through the spray valve by pressure, and then the glue is discharged from the glue outlet of the scraper nozzle and coated on the related materials.

[0003] The rubber band scraper is a kind of scraper used for coating hot melt adhesive on spandex rubber band. When coating hot melt adhesive with the existing rubber band scraper, the spandex rubber band will touch the scraper during the spraying process because the scraper is in a high temperature state. If the spandex rubber band stays in contact with the scraper for a long time, it will be burned off by the high temperature of the scraper. Utility Model Content

[0004] In order to solve the above problems, the purpose of the utility model is to provide a rubber band scraper with an anti-scalding structure, which can prevent the rubber band from being burned and broken by the scraper.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] The utility model provides an elastic scraper with an anti-scalding structure, comprising: a scraper nozzle main body, a glue inlet and an air inlet are arranged on the top of the scraper nozzle main body, a glue outlet and an air outlet are arranged on the bottom of the scraper nozzle main body, a colloid channel and a gas channel are arranged inside the scraper nozzle main body, one end of the colloid channel is connected with the glue inlet, and the other end is connected with the glue outlet; one end of the gas channel is connected with the air inlet, and the other end is connected with the air outlet; a linear elastic scraper groove is also arranged on the bottom of the scraper nozzle main body, the glue outlet is arranged on the top wall of the elastic scraper groove, the air outlet is arranged on the upper side of the elastic scraper groove, and the air outlet is located on the vertical plane where the elastic scraper groove is located.

[0007] In the present application, when the rubber scraper nozzle is coating hot melt adhesive, the rubber will continue to move forward in the rubber scraper groove, and the air outlet on the upper side of the rubber scraper groove will blow gas directly downward. The gas blows the spandex rubber band downward to swing up and down, which can prevent the spandex rubber band from contacting the top wall of the rubber scraper groove for a long time, thereby preventing the spandex rubber band from being burned off by the rubber scraper nozzle.

[0008] Furthermore, the scraper nozzle body includes a scraper nozzle base plate, the top surface of the scraper nozzle base plate is recessed inward to form a glue inlet groove, the glue inlet is arranged in the glue inlet groove, the rubber scraping groove is arranged on the bottom surface of the scraper nozzle base plate, the colloid channel is arranged in the scraper nozzle base plate, and a colloid buffer cavity is also arranged in the scraper nozzle base plate, the end of the colloid channel away from the glue inlet is connected to the colloid buffer cavity, and a colloid through hole is arranged on the bottom wall of the colloid buffer cavity, and the colloid through hole is connected to the glue outlet.

[0009] Further, the colloid buffer cavity includes a storage cavity and a flow channel cavity, the storage cavity is arranged at the bottom of the flow channel cavity, and the storage cavity is connected with the flow channel cavity, the colloid through-hole is arranged on the bottom wall of the storage cavity, and a plurality of flow channels arranged in a fan shape are arranged in the flow channel cavity, one end of the flow channel is connected with the colloid channel, and the other end is connected with the storage cavity; a plurality of rubber scraper grooves are arranged, and each rubber scraper groove is provided with more than one of the glue outlets, and each of the glue outlets is provided with a corresponding colloid through-hole located above it in the storage cavity, so that a plurality of the colloid through-holes are dispersed on the bottom wall of the storage cavity. In the present application, the flow channels distributed in a fan shape can disperse the colloid flowing out of the colloid channel relatively evenly and introduce it into a plurality of colloid through-holes, so as to avoid the colloid from agglomerating together, and each glue outlet discharges glue evenly.

[0010] Furthermore, the scraper nozzle body also includes a cooling air distribution plate and a scraper nozzle panel. The cooling air distribution plate is clamped between the scraper nozzle base plate and the scraper nozzle panel. The top surface of the scraper nozzle base plate is recessed inward to form an air inlet groove. The air inlet is arranged in the air inlet groove. A gas buffer groove is arranged in the scraper nozzle panel. The air outlet is arranged at the bottom of the cooling air distribution plate. The end of the gas channel away from the air inlet passes through the scraper nozzle base plate, the cooling air distribution plate and the top of the gas buffer groove are connected, and the bottom of the gas buffer groove is connected to the air outlet.

[0011] Furthermore, the number of the air outlets is the same as the number of the rubber scraping grooves, and a plurality of the air outlets are dispersedly arranged on the cooling air distribution sheet and correspond one-to-one to the positions of the rubber scraping grooves.

[0012] Furthermore, a glue-gas separation plate is provided between the scraper nozzle bottom plate and the cooling air distribution plate, one side of the glue-gas separation plate is in contact with the scraper nozzle bottom plate, and the other side is in contact with the cooling air distribution plate, and the side of the cooling air distribution plate away from the glue-gas separation plate is in contact with the scraper nozzle panel, and the glue-gas separation plate is also provided with a through hole for avoiding the gas channel.

[0013] Furthermore, an "L"-shaped mounting position is provided on the scraper nozzle bottom plate, and the glue gas separation plate, the cooling gas distribution plate, and the scraper nozzle panel are all arranged on the mounting position.

[0014] Furthermore, the scraper nozzle body also includes a linear guide column, and the scraper nozzle bottom plate, the glue gas separation plate, the cooling gas distribution plate, and the scraper nozzle panel are provided with corresponding linear guide holes, and the linear guide column passes through the linear guide hole.

[0015] Furthermore, an annular mounting slot is also provided on the periphery of the glue inlet slot, and when the rubber scraper nozzle is installed, the mounting slot can be used for clamping and limiting.

[0016] Furthermore, two opposite side surfaces of the top of the scraper nozzle bottom plate are also provided with snap-fitting protrusions, and when the rubber scraper nozzle is installed, the snap-fitting protrusions can be used for snap-fitting and limiting.

[0017] Furthermore, a guide column mounting seat is provided on the side of the scraper nozzle bottom plate away from the scraper nozzle panel, and a plurality of spandex wire guide columns are installed on the guide column mounting seat, and a spandex wire guide groove is formed between adjacent spandex wire guide columns, and an extended straight line of the elastic scraper groove passes through the spandex wire guide groove.

[0018] Furthermore, the glue-gas separation plate, the cooling gas distribution plate, the scraper nozzle panel, and the guide column mounting seat are all connected to the scraper nozzle bottom plate by screws.

[0019] Compared with the prior art, the beneficial effect of the utility model is as follows: the rubber scraper nozzle of the utility model is provided with an air outlet corresponding to the position of the rubber scraping groove at the bottom of the scraper nozzle body. When the rubber scraper nozzle is coating hot melt adhesive, the rubber will always move forward in the rubber scraping groove, and the air outlet above the side of the rubber scraping groove will blow gas directly downward. The gas blows the spandex rubber band downward to swing up and down, which can avoid long-term contact between the spandex rubber band and the top wall of the rubber scraping groove, thereby preventing the spandex rubber band from being burned off by the rubber scraper nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an axonometric view of a rubber scraper.

[0021] Figure 2 yes Figure 1 Exploded diagram.

[0022] Figure 3 It is an axonometric drawing of the scraper nozzle base from the first perspective.

[0023] Figure 4 It is an axonometric drawing of the scraper nozzle bottom plate from a second perspective.

[0024] Figure 5 It is an axonometric drawing of the scraper nozzle bottom plate from the third perspective.

[0025] Figure 6 It is an axonometric view of the scraper panel.

[0026] Figure 7 It is an axonometric view of the cooling air distribution plate.

[0027] Figure 8 It is the front view of the rubber scraper.

[0028] Fig. 9 yes Figure 8 Cross-section view at AA in the middle.

[0029] Description of labels:

[0030] 1. Scraper nozzle body; 2. Glue inlet; 3. Air inlet; 4. Glue outlet; 5. Air outlet; 6. Colloid channel; 7. Gas channel; 8. Rubber scraper groove; 11. Scraper nozzle bottom plate; 12. Glue inlet groove; 13. Colloid buffer cavity; 131. Storage cavity; 132. Flow channel cavity; 133. Flow channel; 14. Colloid through hole; 15. Cooling gas distribution plate; 16. Scraper nozzle panel; 161. Gas buffer groove; 17. Air inlet groove; 18. Glue-gas separator; 19. Mounting position; 110. Linear guide column; 120. Mounting card slot; 130. Card-connecting protrusion; 140. Guide column mounting seat; 150. Spandex guide column; 160. Spandex guide groove. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0032] To achieve the above purpose, the technical solution of the utility model is as follows:

[0033] See also Figure 1-9 As shown, the present embodiment provides a rubber scraper with an anti-scalding structure, comprising: a scraper body 1, a glue inlet 2 and an air inlet 3 are arranged on the top of the scraper body 1, a glue outlet 4 and an air outlet 5 are arranged on the bottom of the scraper body 1, a colloid channel 6 and a gas channel 7 are arranged inside the scraper body 1, one end of the colloid channel 6 is connected with the glue inlet 2, and the other end is connected with the glue outlet 4; one end of the gas channel 7 is connected with the air inlet 3, and the other end is connected with the air outlet 5; a linear rubber scraper groove 8 is also arranged on the bottom of the scraper body 1, the glue outlet 4 is arranged on the top wall of the rubber scraper groove 8, the air outlet 5 is arranged on the upper side of the rubber scraper groove 8, and the air outlet 5 is located on the vertical plane where the rubber scraper groove 8 is located.

[0034] In this embodiment, when the rubber scraper is coating the hot melt adhesive, the rubber will continue to move forward in the rubber scraper groove 8, and the air outlet 5 on the upper side of the rubber scraper groove 8 will blow gas directly downward. The gas blows the spandex rubber band downward to swing up and down, which can prevent the spandex rubber band from contacting the top wall of the rubber scraper groove 8 for a long time, thereby preventing the spandex rubber band from being burned off by the rubber scraper.

[0035] Furthermore, the scraper nozzle body 1 includes a scraper nozzle base plate 11, the top surface of the scraper nozzle base plate 11 is recessed inward to form a glue inlet groove 12, the glue inlet 2 is arranged in the glue inlet groove 12, the rubber scraping groove 8 is arranged on the bottom surface of the scraper nozzle base plate 11, the colloid channel 6 is arranged in the scraper nozzle base plate 11, and a colloid buffer cavity 13 is also arranged in the scraper nozzle base plate 11. The end of the colloid channel 6 away from the glue inlet 2 is connected to the colloid buffer cavity 13, and a colloid through hole 14 is arranged on the bottom wall of the colloid buffer cavity 13, and the colloid through hole 14 is connected to the glue outlet 4.

[0036] Furthermore, the colloid buffer chamber 13 includes a storage chamber 131 and a flow channel chamber 132. The storage chamber 131 is arranged at the bottom of the flow channel chamber 132, and the storage chamber 131 is connected to the flow channel chamber 132. The colloid through hole 14 is arranged on the bottom wall of the storage chamber 131. A plurality of fan-shaped flow channels 133 are arranged in the flow channel chamber 132. One end of the flow channel 133 is connected to the colloid channel 6, and the other end is connected to the storage chamber 131. A plurality of rubber scraper grooves 8 are arranged, and each rubber scraper groove 8 is provided with more than one glue outlet 4. Each glue outlet 4 is correspondingly provided with a colloid through hole 14 located above it in the storage chamber 131, so that a plurality of colloid through holes 14 are dispersedly arranged on the bottom wall of the storage chamber 131. In this embodiment, the fan-shaped flow channels 133 can relatively evenly disperse the colloid flowing out of the colloid channel 6 and guide it into the plurality of colloid vias 14 , thereby preventing the colloid from agglomerating together and allowing each colloid outlet 4 to evenly discharge the colloid.

[0037] Furthermore, the scraper nozzle body 1 also includes a cooling air distribution sheet 15 and a scraper nozzle panel 16. The cooling air distribution sheet 15 is clamped between the scraper nozzle base plate 11 and the scraper nozzle panel 16. The top surface of the scraper nozzle base plate 11 is recessed inward to form an air inlet groove 17. The air inlet 3 is arranged in the air inlet groove 17. A gas buffer groove 161 is arranged in the scraper nozzle panel 16. The air outlet 5 is arranged at the bottom of the cooling air distribution sheet 15. The end of the gas channel 7 away from the air inlet 3 passes through the scraper nozzle base plate 11, the cooling air distribution sheet 15 and is connected with the top of the gas buffer groove 161, and the bottom of the gas buffer groove 161 is connected with the air outlet 5.

[0038] Furthermore, the number of the air outlets 5 is the same as the number of the rubber scraping grooves 8 , and the plurality of air outlets 5 are dispersedly disposed on the cooling air distribution sheet 15 and correspond one-to-one to the positions of the rubber scraping grooves 8 .

[0039] Furthermore, a glue-gas separation plate 18 is provided between the scraper nozzle bottom plate 11 and the cooling air distribution plate 15. One side of the glue-gas separation plate 18 is in contact with the scraper nozzle bottom plate 11, and the other side is in contact with the cooling air distribution plate 15. The side of the cooling air distribution plate 15 away from the glue-gas separation plate 18 is in contact with the scraper nozzle panel 16. The glue-gas separation plate 18 is also provided with a through hole for avoiding the gas channel 7.

[0040] Furthermore, an “L”-shaped mounting position 19 is provided on the scraper nozzle bottom plate 11 , and the glue gas separation plate 18 , the cooling gas distribution plate 15 , and the scraper nozzle panel 16 are all arranged on the mounting position 19 .

[0041] Furthermore, the scraper nozzle body 1 also includes a linear guide column 110, and the scraper nozzle bottom plate 11, the glue gas separation plate 18, the cooling gas distribution plate 15, and the scraper nozzle panel 16 are provided with corresponding linear guide holes, and the linear guide column 110 passes through the linear guide holes.

[0042] Furthermore, an annular mounting groove 120 is also provided on the periphery of the glue inlet groove 12. When the rubber scraper nozzle is installed, the mounting groove 120 can be used for clamping and limiting.

[0043] Furthermore, two opposite side surfaces of the top of the scraper nozzle bottom plate 11 are provided with snap-fitting protrusions 130 . When the rubber scraper nozzle is installed, the snap-fitting protrusions 130 can be used for snap-fitting and limiting.

[0044] Furthermore, a guide column mounting seat 140 is provided on the side of the scraper nozzle bottom plate 11 away from the scraper nozzle panel 16, and a plurality of spandex wire guide columns 150 are installed on the guide column mounting seat 140. A spandex wire guide groove 160 is formed between adjacent spandex wire guide columns 150, and an extended straight line of the elastic scraper groove 8 passes through the spandex wire guide groove 160.

[0045] Furthermore, the glue gas separation plate 18, the cooling gas distribution plate 15, the scraper nozzle panel 16, and the guide column mounting seat 140 are all connected to the scraper nozzle bottom plate 11 by screws.

[0046] Compared with the prior art, the rubber scraper of this embodiment is provided with an air outlet 5 corresponding to the position of the rubber scraping groove at the bottom of the scraper body 1. When the rubber scraper is coating the hot melt adhesive, the rubber will move forward in the rubber scraping groove, and the air outlet 5 above the side of the rubber scraping groove will blow gas directly downward. The gas blows the spandex rubber band downward to swing up and down, which can avoid the spandex rubber band from contacting the top wall of the rubber scraping groove 8 for a long time, thereby preventing the spandex rubber band from being burned off by the rubber scraper.

[0047] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rubber band shaving nozzle with an anti-scalding structure, characterized in that: include: A scraper nozzle body, wherein a glue inlet and an air inlet are arranged on the top of the scraper nozzle body, a glue outlet and an air outlet are arranged on the bottom of the scraper nozzle body, a colloid channel and a gas channel are arranged inside the scraper nozzle body, one end of the colloid channel is connected with the glue inlet, and the other end is connected with the glue outlet; one end of the gas channel is connected with the air inlet, and the other end is connected with the air outlet; a linear rubber scraping groove is also arranged on the bottom of the scraper nozzle body, the glue outlet is arranged on the top wall of the rubber scraping groove, the air outlet is arranged on the upper side of the rubber scraping groove, and the air outlet is located on the vertical plane where the rubber scraping groove is located.

2. The rubber shaving tip with a scalding prevention structure as claimed in claim 1, characterized in that: The scraper nozzle main body includes a scraper nozzle base plate, the top surface of the scraper nozzle base plate is recessed inward to form a glue inlet groove, the glue inlet is arranged in the glue inlet groove, the rubber scraping groove is arranged on the bottom surface of the scraper nozzle base plate, the colloid channel is arranged in the scraper nozzle base plate, and a colloid buffer cavity is also arranged in the scraper nozzle base plate, the end of the colloid channel away from the glue inlet is connected to the colloid buffer cavity, and a colloid through hole is arranged on the bottom wall of the colloid buffer cavity, and the colloid through hole is connected to the glue outlet.

3. The rubber band shaving tip with a scalding prevention structure as claimed in claim 2, characterized in that: The colloid buffer cavity includes a storage cavity and a flow channel cavity. The storage cavity is arranged at the bottom of the flow channel cavity, and the storage cavity is connected with the flow channel cavity. The colloid through hole is arranged on the bottom wall of the storage cavity. A plurality of flow channels arranged in a fan shape are arranged in the flow channel cavity. One end of the flow channel is connected with the colloid channel, and the other end is connected with the storage cavity. A plurality of rubber scraper grooves are arranged, and each rubber scraper groove is provided with more than one said glue outlet. Each said glue outlet is provided with a said colloid through hole located above it in the storage cavity, so that a plurality of said colloid through holes are dispersedly arranged on the bottom wall of the storage cavity.

4. The rubber band shaving tip with a scalding prevention structure as claimed in claim 3, characterized in that: The scraper nozzle main body also includes a cooling air distribution plate and a scraper nozzle panel. The cooling air distribution plate is clamped between the scraper nozzle bottom plate and the scraper nozzle panel. The top surface of the scraper nozzle bottom plate is recessed inward to form an air inlet groove. The air inlet is arranged in the air inlet groove. A gas buffer groove is arranged in the scraper nozzle panel. The air outlet is arranged at the bottom of the cooling air distribution plate. The end of the gas channel away from the air inlet passes through the scraper nozzle bottom plate, the cooling air distribution plate and is connected with the top of the gas buffer groove, and the bottom of the gas buffer groove is connected with the air outlet.

5. The rubber shaving tip with a scalding prevention structure as claimed in claim 4, characterized in that: The number of the air outlets is the same as the number of the rubber scraping grooves, and a plurality of the air outlets are dispersedly arranged on the cooling air distribution sheet and correspond one-to-one to the positions of the rubber scraping grooves.

6. The rubber band shaving tip with a scalding prevention structure as claimed in claim 4, characterized in that: A glue-gas separation plate is also provided between the scraper nozzle bottom plate and the cooling air distribution plate, one side of the glue-gas separation plate is in contact with the scraper nozzle bottom plate, and the other side is in contact with the cooling air distribution plate, and the side of the cooling air distribution plate away from the glue-gas separation plate is in contact with the scraper nozzle panel, and the glue-gas separation plate is also provided with a through hole for avoiding the gas channel.

7. The rubber band shaving tip with a scalding protection structure as claimed in claim 6, characterized in that: An "L"-shaped mounting position is arranged on the scraper nozzle bottom plate, and the glue gas separation plate, the cooling gas distribution plate and the scraper nozzle panel are all arranged on the mounting position.

8. The rubber shaving tip with a scalding prevention structure as claimed in claim 6, characterized in that: The scraper nozzle body also includes a linear guide column. The scraper nozzle bottom plate, the glue gas separation plate, the cooling gas distribution plate, and the scraper nozzle panel are provided with corresponding linear guide holes, and the linear guide column passes through the linear guide holes.

9. The rubber shaving tip with a scalding prevention structure as claimed in claim 2, characterized in that: The periphery of the glue inlet groove is also provided with an annular mounting groove; and the two opposite side surfaces of the top of the scraper nozzle bottom plate are also provided with clamping protrusions.

10. The rubber shaving tip with a scalding protection structure as claimed in claim 2, characterized in that: A guide post mounting seat is also provided on one side of the scraper nozzle bottom plate, and a plurality of spandex wire guide posts are mounted on the guide post mounting seat. A spandex wire guide groove is formed between adjacent spandex wire guide posts, and an extended straight line of the elastic scraper groove passes through the spandex wire guide groove.

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