Adhesive application device

Abstract

To provide an adhesive applicator capable of applying a constant amount of adhesive depending on a moving distance regardless of an operator's skill. [Solution] The adhesive application device 1 includes a housing 2 having a discharge port 21 at a bottom 11A and capable of storing adhesive therein, an extrusion unit 3 capable of advancing and retreating within the housing 2 relative to the discharge port 21 and extruding the adhesive from the discharge port 21, wheels 4 rotatably supported outside the housing 2, and a conversion mechanism 5 that converts rotation of the wheels 4 into movement in the advancing and retreating directions of the extrusion unit 3. The conversion mechanism 5 includes a rack 32 extending from the extrusion unit 3 in the direction opposite to the discharge port 21, and a first pinion 33 that meshes with the rack 32 and rotates about a second rotation axis 33A parallel to a first rotation axis 4A of the wheel 4 as the wheel 4 rotates.

Description

[Technical field]

[0001] The present invention relates to an adhesive application device that applies adhesive to a floor surface or the like at a construction site. [Background technology]

[0002] Patent Document 1 describes an adhesive applicator that applies adhesive to a floor surface or the like at a construction site. In the adhesive applicator described in Patent Document 1, an operator operates an operating lever multiple times to extrude a desired amount of adhesive from a discharge port of a housing, and then the extruded adhesive is moved and spread onto a floor base material by an applicator part that protrudes downward from the bottom of the housing. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3224609 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the adhesive application device of Patent Document 1, the amount of adhesive extruded varies depending on the number of times the operating lever is operated, and the extruded adhesive is moved and spread onto the floor underlayment by the applicator, so skill is required to apply a constant amount of adhesive onto the floor underlayment depending on the travel distance of the adhesive application device.

[0005] The present invention has been made in consideration of the above-mentioned circumstances, and its object is to provide an adhesive application device that can apply a constant amount of adhesive depending on the travel distance, regardless of the skill of the operator. [Means for solving the problem]

[0006] (1) The adhesive application device according to claim 1 includes a housing having a discharge port at its bottom and capable of storing an adhesive therein, a pusher unit capable of advancing and retreating within the housing relative to the discharge port and pushing out the adhesive from the discharge port, wheels rotatably supported outside the housing, and a conversion mechanism that converts rotation of the wheels into movement in the advancing and retreating direction of the pusher unit. The conversion mechanism includes a rack extending from the pusher unit in the opposite direction to the discharge port, and a first pinion meshing with the rack and rotating about a second rotation axis parallel to a first rotation axis of the wheel as the wheel rotates.

[0007] The rotation of the wheel in both directions is converted into the movement of the pusher in the forward and backward directions via the first pinion and the rack. Therefore, the pusher moves in the forward and backward directions by an amount corresponding to the amount of rotation of the wheel, so that an operator can apply a constant amount of adhesive according to the movement distance of the adhesive application device, regardless of the operator's skill.

[0008] (2) The adhesive application device according to claim 2 is the adhesive application device according to claim 1, wherein the conversion mechanism has a belt that is stretched between the wheel and the first pinion.

[0009] Since the rotation of the wheels is transmitted to the first pinion via a belt, the rotation of the wheels is transmitted to the first pinion more smoothly than when the rotation of the wheels is transmitted to the first pinion via multiple gears, making it easier for an operator to move the adhesive application device with the wheels pressed against the floor surface.

[0010] (3) The adhesive application device of claim 3 is the adhesive application device of claim 1, wherein the conversion mechanism has a second pinion that rotates around a third rotation axis parallel to the second rotation axis and meshes with the first pinion, and a belt that is stretched between the wheel and the second pinion.

[0011] For example, when the worker, with the wheels positioned closer to the worker than the housing, presses the wheels against the floor surface and moves the adhesive applicator toward the worker, the rotation of the wheels is transmitted via the belt and the second pinion to the first pinion, which rotates in a direction that moves the rack toward the discharge port, and the extrusion part moves in a direction toward the discharge port. Therefore, the worker can apply the adhesive while moving the adhesive applicator toward the worker, making it easy to apply the adhesive. Also, the adhesive pushed out from the discharge port does not adhere to the wheels.

[0012] (4) The adhesive application device according to claim 6 is the adhesive application device according to claim 3, wherein the rack, the first pinion, and the second pinion are covered by the housing.

[0013] The housing prevents foreign objects from coming into contact with the rack, the first pinion, and the second pinion, making the conversion mechanism less susceptible to failure. Effect of the Invention

[0014] According to the present invention, an operator can apply a constant amount of adhesive depending on the moving distance of the adhesive application device, regardless of the operator's skill level. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is a front view of an adhesive application device 1 according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view of the adhesive application device 1 according to the embodiment of the present invention. [Diagram 3] FIG. 3 is a side view of the rack 32 of the adhesive application device 1 according to the embodiment of the present invention. [Figure 4] FIG. 4 is a cross-sectional view showing a state in which the rack 32 of the adhesive application device 1 according to the embodiment of the present invention is supported by two support pieces 36 so as to be movable along the first direction A. As shown in FIG. [Diagram 5] FIG. 5 is a cross-sectional view of an adhesive application device 1 according to a modified example of the present invention. [Figure 6]FIG. 6 is a front view of an adhesive application device 1 according to another modified example of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, an adhesive application device 1 according to an embodiment of the present invention will be described with reference to the drawings. Note that the embodiment described below is merely one example of the present invention, and it goes without saying that the embodiment of the present invention can be appropriately modified without departing from the gist of the present invention.

[0017] As shown in FIG. 1 and FIG. 2, the adhesive application device 1 includes a housing 2, an extrusion unit 3, wheels 4, and a conversion mechanism 5. The housing 2 has a generally cylindrical shape extending along a first direction A. The housing 2 has a main casing 11 and a sub-casing 12. The main casing 11 has a bottom 11A and a main body 11B. The bottom 11A is located at one end of the main casing 11 in the first direction A. The bottom 11A has a conical cylindrical shape with a diameter that decreases toward one side of the first direction A. The bottom 11A has a discharge port 21 that penetrates one end of the bottom 11A along the first direction A. The main body 11B has a cylindrical shape extending from the other end of the bottom 11A to the other side of the first direction A. The internal space of the main body 11B is in communication with the internal space of the bottom 11A. The other end of the main body 11B in the first direction A is open. The main casing 11 can accommodate adhesive through an opening at the other end of the main body portion 11B in the first direction A. The main casing 11 may directly accommodate adhesive, or may accommodate an adhesive filling bag in which adhesive is sealed. When the adhesive filling bag in which adhesive is sealed is pressed, the adhesive is pushed out through the opening located in the adhesive filling bag.

[0018] A wheel frame 22 is located near one end in the first direction A on the outer surface of the main body 11B. The wheel frame 22 is a rod-shaped frame extending from the outer surface of the main body 11B in one direction in the second direction B perpendicular to the first direction A. A pair of engagement claws 23, 23 are located at the other end in the first direction A on the outer surface of the main body 11B. The pair of engagement claws 23, 23 are located on both sides in the second direction B on the outer surface of the main body 11B. The pair of engagement claws 23, 23 protrude from the other end of the main body 11B in the other direction in the first direction A. The pair of engagement claws 23, 23 are elastically deformable outward in the second direction B.

[0019] The subcasing 12 is connected to the other end of the main body 11B. The subcasing 12 has a rectangular tubular shape extending from the other end of the main body 11B in the other direction of the first direction A. The internal space of the subcasing 12 is in communication with the internal space of the main body 11B. The other end of the subcasing 12 in the first direction A is open. The length L1 of the subcasing 12 along the first direction A is shorter than the length L2 of the main body 11B along the first direction A. The length L3 of the subcasing 12 along the second direction B is approximately equal to the length L4 of the main body 11B along the second direction B. The length L5 of the subcasing 12 along the third direction C perpendicular to the first direction A and the second direction B is shorter than the length L6 of the main body 11B along the third direction C. A belt hole 24 is located on one side of the subcasing 12 in the second direction B. The belt hole 24 penetrates the subcasing 12 along the second direction B. The belt passage hole 24 has a rectangular shape whose length in the first direction A is longer than that in the third direction C.

[0020] A pair of engagement grooves 25, 25 are located at one end in the first direction A on the outer surface of the sub-casing 12. The pair of engagement grooves 25, 25 are located on both sides in the second direction B on the outer surface of the sub-casing 12. The pair of engagement grooves 25, 25 are recesses recessed from the outer surface of the sub-casing 12. A pair of engagement claws 23, 23 fit into the pair of engagement grooves 25, 25 in a state in which they are elastically deformed outward in the second direction B. In this way, the sub-casing 12 is detachably attached to the other end in the first direction A of the main casing 11.

[0021] The pushing part 3 is located in the internal space of the main body part 11B of the main casing 11. The pushing part 3 is circular and has a diameter slightly smaller than the inner diameter of the main body part 11B. The pushing part 3 can advance and retreat within the internal space of the main body part 11B along a first direction A. The first direction A is an example of the advance and retreat direction.

[0022] The wheel 4 is located outside the housing 2. The wheel 4 has a first rotation shaft 4A rotatably supported by the wheel frame 22. The first rotation shaft 4A extends along the third direction C. The wheel 4 is rotatable about the first rotation shaft 4A.

[0023] The conversion mechanism 5 has a rack 32, a first pinion 33, a second pinion 34, and a belt 35. The rack 32 has a flat plate portion 32A and a plurality of teeth 32B. The flat plate portion 32A is located from the internal space of the main body portion 11B to the internal space of the sub-casing 12. The flat plate portion 32A is connected to the surface of the extrusion portion 3 on the opposite side to the discharge port 21. The flat plate portion 32A extends from the extrusion portion 3 to the other side of the first direction A. The flat plate portion 32A is flat and extends in the first direction A and the third direction C. The length L7 of the flat plate portion 32A along the first direction A is approximately equal to the length L1 of the sub-casing 12 along the first direction A plus the length L2 of the main body portion 11B along the first direction A.

[0024] The multiple teeth 32B are located on one surface of the flat plate portion 32A in the second direction B. The multiple teeth 32B are lined up along the first direction A from one end to the other end of the flat plate portion 32A.

[0025] As shown in FIG. 3, the rack 32 has support grooves 32C extending along the first direction A on both side surfaces in the third direction C of the flat plate portion 32A. Each support groove 32C is recessed from each side surface of the flat plate portion 32A. Each support groove 32C is located from the vicinity of one end of the flat plate portion 32A in the first direction A to the vicinity of the other end of the flat plate portion 32A in the first direction A. As shown in FIG. 4, each support piece 36 extending inward in the third direction C from both sides of the inner surface of the sub-casing 12 in the third direction C is inserted into each support groove 32C. Each support piece 36 is prevented from coming out of each support groove 32C in the first direction A. As a result, the rack 32 is supported by the two support pieces 36 so as to be movable along the first direction A.

[0026] When the pushing portion 3 is located at one end in the first direction A in the internal space of the main body portion 11B, the entire rack 32 is covered by the main body portion 11B and the sub-casing 12. When the pushing portion 3 is located on the other side of the one end in the first direction A in the internal space of the main body portion 11B, as shown in FIG. 2, the other end of the rack 32 in the first direction A is exposed from the sub-casing 12.

[0027] The first pinion 33 is located in the internal space of the sub-casing 12. Thus, the entire first pinion 33 is covered by the sub-casing 12. The first pinion 33 has a second rotating shaft 33A rotatably supported on the inner surface of the sub-casing 12. The second rotating shaft 33A extends along a third direction C parallel to the first rotating shaft 4A. The first pinion 33 rotates about the second rotating shaft 33A. It meshes with a plurality of teeth 32B of the rack 32.

[0028] The second pinion 34 is located in the internal space of the sub-casing 12. As a result, the entire second pinion 34 is covered by the sub-casing 12. The second pinion 34 is located on one side of the first pinion 33 in the first direction A. The second pinion 34 has a third rotating shaft 34A rotatably supported on the inner surface of the sub-casing 12. The third rotating shaft 34A extends along a third direction C parallel to the second rotating shaft 33A. The second pinion 34 rotates about the third rotating shaft 34A. The second pinion 34 meshes with the first pinion 33.

[0029] 2, the diameter D4 of the tip circle and the number of teeth of the second pinion 34 are the same as the diameter D5 of the tip circle and the number of teeth of the first pinion 33. The diameter D1 of the third rotating shaft 34A is the same as the diameter D2 of the second rotating shaft 33A. The diameter D1 of the third rotating shaft 34A is smaller than the diameter D3 of the first rotating shaft 4A of the wheel 4. The diameter D4 of the tip circle of the second pinion 34 is smaller than the diameter D6 of the wheel 4.

[0030] The belt 35 is wound around the first rotating shaft 4A of the wheel 4 and the third rotating shaft 34A of the second pinion 34 through the belt through hole 24 of the sub-casing 12. This allows the rotation of the wheel 4 in both directions to be transmitted to the first pinion 33 via the belt 35 and the second pinion 34. When the rotation of the wheel 4 in both directions is transmitted to the first pinion 33, the rack 32 meshing with the first pinion 33 moves along the first direction A, causing the pushing unit 3 to move along the first direction A. In this way, the rotation of the wheel 4 in both directions is converted into the movement of the pushing unit 3 in the forward and backward directions.

[0031] The moving distance of the extrusion unit 3 and the amount of adhesive discharged from the discharge port 21 can be adjusted by changing the ratio between the diameter D3 of the first rotating shaft 4A of the wheel 4 and the diameter D6 of the wheel 4, by changing the ratio between the diameter D1 of the third rotating shaft 34A of the second pinion 34 and the diameter D3 of the first rotating shaft 4A of the wheel 4, or by changing the ratio between the diameter D4 of the tooth tip circle of the second pinion 34 and the diameter D1 of the third rotating shaft 34A of the second pinion 34. For example, when the ratio of the diameter D3 of the first rotating shaft 4A of the wheel 4 to the diameter D6 of the wheel 4 is increased, the moving distance of the extrusion unit 3 becomes longer. Conversely, when the ratio of the diameter D3 of the first rotating shaft 4A to the diameter D6 of the wheel 4 is decreased, the moving distance of the extrusion unit 3 becomes shorter. Also, when the ratio of the diameter D1 of the third rotating shaft 34A of the second pinion 34 to the diameter D3 of the first rotating shaft 4A of the wheel 4 is decreased, the moving distance of the extrusion unit 3 becomes longer. Conversely, when the ratio of the diameter D1 of the third rotating shaft 34A of the second pinion 34 to the diameter D3 of the first rotating shaft 4A of the wheel 4 is increased, the moving distance of the pushing unit 3 is shortened. Also, when the ratio of the diameter D4 of the tooth tip circle of the second pinion 34 to the diameter D1 of the third rotating shaft 34A of the second pinion 34 is increased, the moving distance of the pushing unit 3 is lengthened. Conversely, when the ratio of the diameter D4 of the tooth tip circle of the second pinion 34 to the diameter D1 of the third rotating shaft 34A of the second pinion 34 is decreased, the moving distance of the pushing unit 3 is shortened.

[0032] Furthermore, by changing the size of the discharge port 21, it is possible to adjust the ease with which the adhesive can be discharged from the discharge port 21. For example, when the discharge port 21 is made larger, the movement resistance of the adhesive inside the main casing 11 decreases, making it easier for the adhesive to be discharged from the discharge port 21. Conversely, when the discharge port 21 is made smaller, the movement resistance of the adhesive inside the main casing 11 increases, making it more difficult for the adhesive to be discharged from the discharge port 21.

[0033] Next, a method of using the adhesive application device 1 will be described. In an initial state, an adhesive-filled bag containing adhesive is housed in the main casing 11. When housing the adhesive in the main casing 11, the worker removes the belt 35 from the first rotating shaft 4A of the wheel 4, and then removes the sub-casing 12 from the main casing 11. Next, the worker houses the adhesive through an opening at the other end of the main body 11B in the first direction A. Next, the worker attaches the sub-casing 12 to the main casing 11 by fitting a pair of engagement claws 23, 23 of the main casing 11 into a pair of engagement grooves 25, 25 of the sub-casing 12. Finally, the worker loops the belt 35 around the first rotating shaft 4A of the wheel 4.

[0034] As shown in FIG. 2, the worker presses the wheel 4 against the floor underlayment 41 with the wheel 4 positioned in front of the housing 2. Next, the worker moves the adhesive application device 1 to the front of the worker. As a result, the wheel 4 rotates clockwise in FIG. 2. The rotation of the wheel 4 is transmitted to the second pinion 34 via the belt 35. As a result, the second pinion 34 rotates clockwise in FIG. 2. The first pinion 33 meshing with the second pinion 34 rotates counterclockwise in FIG. 2. The rack 32 meshing with the first pinion 33 moves in one direction of the first direction A toward the discharge port 21. The extrusion unit 3 connected to the rack 32 moves in one direction of the first direction A toward the discharge port 21. As a result, the adhesive is extruded from the discharge port 21 and applied onto the floor underlayment 41.

[0035] [Effects of the embodiment] In the adhesive applicator 1, the rotation of the wheels 4 in both directions is converted into movement of the extrusion unit 3 along the first direction A via the belt 35, the second pinion 34, the first pinion 33, and the rack 32. Because of this, the extrusion unit 3 moves in the first direction A by an amount corresponding to the amount of rotation of the wheels 4, an operator can apply a constant amount of adhesive according to the movement distance of the adhesive applicator 1, regardless of the operator's skill.

[0036] In the adhesive applicator 1, the rotation of the wheels 4 is transmitted to the second pinion 34 via the belt 35, so the rotation of the wheels 4 is transmitted to the second pinion 34 more smoothly than when the rotation of the wheels 4 is transmitted to the second pinion 34 via multiple gears. This makes it easier for an operator to move the adhesive applicator 1 with the wheels 4 pressed against the floor surface.

[0037] In the adhesive applicator 1, when the operator moves the adhesive applicator 1 toward the operator by pressing the wheels 4 against the floor surface while positioning the wheels 4 in front of the housing 2, the first pinion 33 to which the rotation of the wheels 4 is transmitted via the belt 35 and the second pinion 34 rotates counterclockwise in FIG. 2, and the rack 32 moves in one direction of the first direction A toward the discharge port 21, so that the extrusion unit 3 moves in one direction of the first direction A toward the discharge port 21. Therefore, the operator can apply the adhesive while moving the adhesive applicator 1 toward the operator, making it easy to apply the adhesive. In addition, the adhesive discharged from the discharge port 21 does not adhere to the wheels 4.

[0038] In the adhesive application device 1, the rack 32, the first pinion 33, and the second pinion 34 are covered by the sub-casing 12. For this reason, the sub-casing 12 prevents foreign matter from contacting the rack 32, the first pinion 33, and the second pinion 34, making the conversion mechanism 5 less likely to break down.

[0039] [Variations] In the adhesive application device 1, the rotation of the wheel 4 is transmitted to the second pinion 34 via the belt 35, but the mechanism is not limited to the belt transmission mechanism as long as the rotation of the wheel 4 can be transmitted to the second pinion 34. For example, the rotation of the wheel 4 may be transmitted to the second pinion 34 via a plurality of gears.

[0040] In the adhesive application device 1, the conversion mechanism 5 has the first pinion 33 and the second pinion 34, but as shown in FIG. 5, the second pinion 34 may be omitted. In this case, the belt 35 is stretched around the first rotating shaft 4A of the wheel 4 and the second rotating shaft 33A of the first pinion 33. In the adhesive application device 1 of the modified example, when the operator moves the adhesive application device 1 so that the wheel 4 rotates counterclockwise in FIG. 5, the first pinion 33 rotates counterclockwise in FIG. 5, so that the rack 32 moves in one direction of the first direction A toward the discharge port 21, and the extrusion part 3 moves in one direction of the first direction A toward the discharge port 21. As a result, the adhesive is extruded from the discharge port 21. In this case, in order to prevent the adhesive extruded from the discharge port 21 from adhering to the wheel 4, the wheel 4 may be disposed at two positions that do not coincide with the discharge port 21 in the third direction C, as shown in FIG. 6.

[0041] In the adhesive application device 1, the diameter D1 of the third rotating shaft 34A of the second pinion 34 is smaller than the diameter D3 of the first rotating shaft 4A of the wheel 4, but the length may be equal to or greater than the diameter D3 of the first rotating shaft 4A of the wheel 4. In this way, the rotation speed of the second pinion 34 and the first pinion 33 is slowed down, so that the movement distance of the rack 32 and the extrusion unit 3 relative to the amount of rotation of the wheel 4 is shortened. Therefore, the user can apply less adhesive for a certain movement distance of the adhesive application device 1.

[0042] In the adhesive application device 1, the length L7 of the flat plate portion 32A of the rack 32 along the first direction A is approximately equal to the length L1 of the subcasing 12 along the first direction A plus the length L2 of the main body portion 11B along the first direction A, but it may be longer than the length L1 of the subcasing 12 plus the length L2 of the main body portion 11B. Also, the length L7 of the rack 32 may be shorter than the length L1 of the subcasing 12 plus the length L2 of the main body portion 11B, as long as the meshing between the rack 32 and the first pinion 33 can be maintained when the extrusion portion 3 is located at one end within the main body portion 11B.

[0043] In the adhesive application device 1, when the extrusion section 3 is positioned on the other side of one end of the first direction A in the internal space of the main body section 11B, the other end of the rack 32 in the first direction A is exposed from the sub-casing 12. However, for example, by increasing the length of the sub-casing 12 along the first direction A, the entire rack 32 may be covered by the main body section 11B and the sub-casing 12 regardless of the position of the extrusion section 3.

[0044] In the adhesive application device 1, the first pinion 33 is entirely covered by the sub-casing 12, but as long as the first pinion 33 is rotatably supported by the sub-casing 12, at least a part of the first pinion 33 may be exposed from the sub-casing 12. Also, the first pinion 33 may be rotatably supported by the main body 11B. Also, the second pinion 34 is entirely covered by the sub-casing 12, but as long as the second pinion 34 is rotatably supported by the sub-casing 12, at least a part of the second pinion 34 may be exposed from the sub-casing 12. Also, the second pinion 34 may be rotatably supported by the main body 11B.

[0045] In the adhesive application device 1, the rack 32 is supported by two support pieces 36 extending inward from the inner surface of the sub-casing 12 so as to be movable along the first direction A, but it may also be supported by the inner surface of the main body portion 11B so as to be movable along the first direction A. When the rack 32, the first pinion 33, and the second pinion 34 are supported by the main body portion 11B, the sub-casing 12 may be omitted.

[0046] In the adhesive application device 1, the sub-casing 12 is detachably attached to the main casing 11 by fitting the pair of engagement claws 23, 23 into the pair of engagement grooves 25, 25 in a state where the pair of engagement claws 23, 23 are elastically deformed outward in the second direction B, but is not limited to the pair of engagement claws 23, 23 and the pair of engagement grooves 25, 25 as long as the sub-casing 12 is detachably attached to the main casing 11. For example, the sub-casing 12 may be detachably attached to the main casing 11 by being press-fitted into the main casing 11.

[0047] [Appendix 1] a housing having a discharge port at a bottom and capable of containing an adhesive therein; an extrusion section that is movable within the housing toward and away from the discharge port and extrudes the adhesive from the discharge port; A wheel rotatably supported on the outside of the housing; a conversion mechanism that converts the rotation of the wheel into the movement of the push-out portion in the forward and backward directions, The conversion mechanism is as follows: a rack extending from the extrusion portion in a direction opposite to the discharge port; an adhesive application device having a first pinion that meshes with the rack and rotates about a second rotation axis parallel to the first rotation axis of the wheel as the wheel rotates;

[0048] [Appendix 2] The adhesive application device of claim 1, wherein the conversion mechanism has a belt that is stretched between the wheel and the first pinion.

[0049] [Appendix 3] the conversion mechanism has a second pinion that rotates about a third rotation axis parallel to the second rotation axis and meshes with the first pinion; 3. The adhesive application device according to claim 2, wherein the belt is stretched between the wheel and the second pinion.

[0050] [Appendix 4] 4. The adhesive application device according to claim 3, wherein the rack, the first pinion, and the second pinion are covered by the housing. [Explanation of symbols]

[0051] 1. Adhesive application device 2. Housing 3. Extrusion section 4...wheels 4A: First rotating shaft 5. Conversion mechanism 11A...Bottom 21...Discharge port 32...Rack 33... First pinion 33A Second rotating shaft 34...Second pinion 34A...Third rotating shaft 35...Belt

Claims

1. a housing having a discharge port at a bottom and capable of containing an adhesive therein; an extrusion section that is movable within the housing toward and away from the discharge port and extrudes the adhesive from the discharge port; A wheel rotatably supported on the outside of the housing; a conversion mechanism that converts the rotation of the wheel into the movement of the push-out portion in the forward and backward directions, The conversion mechanism is as follows: a rack extending from the extrusion portion in a direction opposite to the discharge port; a first pinion that is in mesh with the rack and that rotates about a second rotation axis parallel to the first rotation axis of the wheel in response to rotation of the wheel; a second pinion that rotates about a third rotation axis parallel to the second rotation axis and meshes with the first pinion; and a belt that is stretched around the wheel and the second pinion.

2. The adhesive application device according to claim 1 , wherein the rack, the first pinion, and the second pinion are covered by the housing.

Images