JPH045509B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a thickener extrusion device, more specifically,
This invention relates to a thickening agent extrusion device that has a nozzle at its tip and extrudes a thickening agent such as a caulking agent or a sealing agent through the nozzle.

[Background Art] Generally, in this type of thickener extrusion device, the extrusion rod 3 moves the piston 12 by pulling the handle 33, as in the device disclosed in Japanese Utility Model Publication No. 48-1945 shown in FIG. The thickening agent 13 held between the piston 12 and the nozzle 11 is moved forward and the thickening agent 13 is moved forward to the nozzle 11.
The handle 33
When released, the push rod 3 is held in that position. Therefore, when the handle 33 is pulled next time, the thickening agent 13 is immediately pushed out from the nozzle 11. However, once the thickening agent 13 is pressed, internal pressure is stored due to its compressibility, and in this device, the piston 12 is held so as not to retreat.
The stored internal pressure is released by forcing the thickening agent 13 out of the nozzle 11. That is, even when the handle 33 is released, the thickener 13
is forced out from the nozzle 11, resulting in a so-called trailing phenomenon.

The above-mentioned one is a manual type, but the one shown in FIG. 2 is a mechanism adopted in an electric extrusion device in which the extrusion rod 3 is driven by a motor, and when the switch is turned off, The push rod 3 is not held in that position but can be moved back and forth. In this case, the internal pressure stored in the thickening agent 13 is released by retracting the piston 12 rather than pushing out the thickening agent 13 from the nozzle 11, and the dripping described above does not occur. be. However, when the piston 12 retreats due to the internal pressure of the thickening agent 13, the extrusion rod 3 is pushed forcefully, so the plunger 14 provided at the tip of the extrusion rod 3
2, and a gap 34 may be created between the thickening agent 13 and the piston 12. If such a gap 34 occurs, the next time the switch is turned on, there will be a waste of movement of the extrusion rod 3 by the gap 34, and there will be a time lag from when the switch is turned on until the thickening agent 13 is extruded. However, there is a problem that it is difficult to use. Furthermore, the internal pressure varies depending on the type and viscosity of the thickening agent such as caulking agent or sealing agent, or the remaining amount, so the gap 34 is not constant, and therefore the time lag caused by the gap 34 also increases. There was a problem that it was not constant and difficult to use.

[Object of the Invention] The present invention has been made in view of the above-mentioned points, and its main purpose is to extrude the thickening agent and stop the extrusion, and then the thickening agent continues to flow out. There is no dripping, and there is no time lag until the thickening agent starts coming out when extrusion is started. In particular, it is possible to avoid differences in the type and viscosity of the thickening agent such as caulking agent or sealing agent, or the remaining amount. It is an object of the present invention to provide a thickening agent extrusion device that can prevent a piston and an extrusion rod from coming apart depending on each state, even if there are differences, and can prevent a time lag from occurring.

[Disclosure of the Invention] In order to solve the problems of the conventional example described above and achieve the object of the present invention, the thickener extrusion device of the present invention has a cylindrical housing having a nozzle 11 at one end in the axial direction. A viscosity agent 13 such as a caulking agent or a sealant is stored in the housing part 6, and a piston 12 disposed in the housing part 6 so as to be movable along the axial direction is connected to the other end of the housing part 6 in the axial direction. A thickening agent 13 is contained between a piston 12 and a nozzle 11 by being pressed by an extrusion rod 3 that moves toward the nozzle 11.
A device for extruding from a nozzle 11, the extrusion rod 3
A drive means is provided to push out the push rod 3 by being connected to the drive means, and a drive means is provided between the drive means and the push rod 3, and the connection between the drive means and the push rod 3 is released when the drive means stops operating. The push rod 3 is provided with a clutch means 59 for freeing the push rod 3, a brake means serving as resistance is provided on the push rod 3, and an adjustment means 47 is provided for making the amount of resistance by the brake means variable.

Then, the adjusting means 47 is connected to the output shaft 58 of the driving means.
It is preferable to include an adjustment spring 44 that slides in contact with the output shaft 58 to apply a load to the rotation of the output shaft 58, and an adjustment shaft 40 that adjusts the force of the adjustment spring 44.

Further, the present invention has a nozzle 1 at one end in the axial direction.
A viscosity agent 13 such as a caulking agent or a sealant is stored in a cylindrical storage part 6 having a piston 12 movable along the axial direction in the storage part 6. from the other axial end of the nozzle 11
The extrusion rod 3, which moves toward stick 3
A driving means for pushing out is provided, and when the driving means provided between the driving means and the pushing rod 3 stops operating, the driving means and the pushing rod 3 are disconnected and the pushing rod 3 is freed. By providing a clutch means 59 to act as a resistance and a brake means acting as a resistance on the extrusion rod 3, when the thickening agent is extruded as described above and the extrusion is stopped, the residual pressure remaining in the thickening agent is reduced. is released by retracting the piston 12, so that the so-called trailing phenomenon in which the thickening agent continues to flow out from the tip of the nozzle 11 does not occur, and moreover, the thickening agent remains in the thickening agent in this way. When the piston 12 retreats due to the residual pressure and releases the residual pressure, the pushing rod 3 does not separate from the piston 12 due to the resistance of the brake means 56, and is pushed backward by the piston 12, so that the piston 12
It is possible to prevent a gap from forming between the extrusion rod 3 and the extrusion rod 3. In addition, the internal pressure varies depending on the type and viscosity of the thickening agent such as caulking agent or sealing agent, or the amount remaining.
The adjustment means 47 is used to vary the amount of resistance exerted by the brake means against the push rod 3, thereby preventing the piston 12 and the push rod 3 from separating.

Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings.

As shown in FIG. 3, the casing 15 includes a main body 1 having a hand grip 17 extending downward
and a cylindrical holder 2 protruding from the front surface of the main body 1. The front end surface of the holder 2 is open, and a cartridge 10 filled with a thickening agent 13 such as a caulking agent or a sealing agent is loaded into the holder 2 through this opening. Card Ritsuji 10
A nozzle 11 is attached to the front end of the cylindrical storage portion 6, and the rear end is closed by a piston 12 that is movable along the axial direction of the storage portion 6. A thickening agent 13 is filled between the nozzle 11 and the piston 12, and the thickening agent 13 is pushed out from the nozzle 11 when the piston 12 moves forward. As shown in FIG. 5, the rear part of a cover 18 is pivotally attached to the front end of the holder 2 so that it can move up and down below the holder 2. The cartridge 10 is held in the holder 2 by covering the opening leaving an opening for the nozzle 11 to protrude. The piston 12 of the cartridge 10 is urged forward by a push rod 3 driven by a drive means 4 housed within the body 1. The holder 2 is attached with its rear end aligned with an opening for protruding the push rod 3 formed on the front end surface of the main body 1, and is fixed to the main body 1 by a tapping screw 62 that is fixed through the main body 1 and the holder 2. .

The drive means 4 includes a motor 7 and a gear device 5 that transmits the rotational force of the motor 7 to the push rod 3. The gear device 5 is housed in a gear case 9 and is housed in the main body 1. A battery bag 23 is housed in the hand grip 17 as a power source, and a motor 7 and a battery pack 23 are housed in the hand grip 17.
A switch (not shown) is provided for disconnecting and disconnecting between the handgrip 17 and a switch lever 20 for operating the switch and a lock handle 22 for locking the switch lever 20. be exposed.

The gear device 5 housed in the gear case 9 is a speed reducer that reduces the rotational output of the motor 7, and a pinion 8 is fixed to its output shaft 58. The pushing rod 3 is formed with rack teeth and meshes with the pinion 8, so that the pushing rod 3 is moved forward or retracted by the rotation of the pinion 8. A plunger 14 is provided at the tip of the pushing rod 3 that moves forward and backward in this way, and the piston 12 of the cartridge 10 is pushed forward by the plunger 14 at the tip of the pushing rod 3. .

The gear device 5 utilizes a planetary mechanism, and as shown in FIG. 4, it is constructed by arranging four stages of planetary mechanisms in series. Each planetary mechanism consists of a sun gear 50, a planetary gear 51 that meshes with the sun gear 50, an internal gear 52 that meshes with the planetary gear 51, and a planetary carrier 53 that supports each planetary gear 51. The sun gear 50 in the second and fourth stage planetary mechanisms is integrally formed with the planetary carrier 53 in the preceding stage planetary mechanism. Pinion 8 is the planetary carrier 5 of the planetary mechanism.
The output shaft 58 is fixed to the output shaft 58 which is integrally provided to the output shaft 3.
The planetary carrier 53 of the second stage planetary mechanism and the planetary carrier 53 of the third stage planetary mechanism are a pair of spur gears 5.
Connected by 4. In these planetary mechanisms, the rotational force input to the sun gear 50 causes the planetary gear 5 to
1 and by fixing the internal gear 52 so that it does not rotate, the planetary gear 51 is rotated around the sun gear 50.
The rotation is taken out from the planetary carrier 53. Each internal gear 52 of the planetary mechanism from the first stage to the third stage is integrated with the gear case 9 or fixed to the gear case 9, whereas the internal gear 52 of the planetary mechanism of the final group is As shown in FIGS. 6 and 7, the outer peripheral surface is provided with a large number of recesses 55 so as to be rotatable relative to the gear case 9. Gear case 9 corresponding to the surroundings of this internal gear 52
A clutch pin 56 is disposed on the inner periphery of the gear case 9 so as to be movable back and forth, and when the clutch pin 56 protrudes inside the gear case 9, the tip of the clutch pin 56 engages with one of the recesses 55 of the internal gear 52. ing. A protruding piece 26 protruding from the switch lever 20 is engaged with the clutch pin 56, and when the switch lever 20 is pulled toward the hand grip 17 to energize the motor 7, the sixth clutch pin 56 engages with the clutch pin 56.
As shown in the figure, the clutch pin 56 biased by the engagement spring 57 moves upward and its tip engages one of the recesses 55 of the internal gear 52, thereby preventing the internal gear 52 from rotating. As a result, the rotational force of the motor 7 is reduced in speed and transmitted to the pinion 8 through the four-stage planetary mechanism. On the other hand, when you release your finger from the switch lever 20, the switch turns off and the motor 7 stops, and the spring force of a return spring (not shown) that returns the switch lever 20 causes the protrusion 26 to engage the clutch pin 56. Push down against 57, internal gear 5
The engagement between the second recess 55 and the clutch pin 56 is released, and the internal gear 52 is allowed to rotate.
In other words, the planetary carrier 53 in the fourth stage planetary mechanism, which includes this internal gear 52, is allowed to idle, and the pinion 8 is thereby separated from the motor 7 and rotates freely. It is. In this way, the final stage planetary mechanism is provided with a clutch means 59, which allows the pushing rod 3 and the driving means 4 to be coupled to and separated from each other. Therefore, if the tip of the push rod 3 is pushed backward in this state, the push rod 3 can be moved back without rotating the gear device 5, and the push rod 3 can be returned to its original position with a small force. It is something.

An adjustment shaft 40 that rotates coaxially is disposed at the tip of the output shaft 58 of the gear mechanism 5, and a male threaded portion 41 is formed on the outer peripheral surface of the adjustment shaft 40. The male threaded portion 41 is screwed into a female threaded portion 42 formed on the inner peripheral surface of the gear case 9, and the adjustment shaft 40 is movable along the axial direction of the output shaft 58. Adjustment axis 4
A recess 4 is provided in one end surface of the main body 1 in the axial direction of the
3 is formed, and the tip of the output shaft 58 is rotatably inserted into this recess 43. An adjustment spring 44 is interposed between the pinion 8 and one end surface of the adjustment shaft 40 in which the recess 43 is formed, and thrust washers 45 are provided at both ends of the adjustment spring 44, respectively. The other end of the adjustment shaft 40 protrudes from the side surface of the main body 1 to form a knob 46, and by turning this knob 46, the amount of compression of the adjustment spring 44 can be varied. It is possible to adjust the pressing force of the thrust washer 45 against the thrust washer 45. That is, in the present invention, as described above, the adjustment spring 44 is configured to press the pinion 8 provided on the output shaft 58 via the thrust washer 45, thereby forming a brake means that acts as a resistance against the push rod 3. It is something. Further, as described above, by turning the knob of the adjusting shaft 40, the adjusting spring 44, which constitutes a part of the braking means, is
By configuring the compression amount to be variable, an adjusting means for varying the amount of resistance by the brake means is constructed. By means of the adjusting means 47 configured in this way, the magnitude of the load on the rotation of the output shaft 58 can be adjusted.

Since the present invention has the above-mentioned configuration, when the switch lever 20 is pulled toward the hand grip, the switch closes the contact, the motor 7 rotates, and the push rod 3 moves forward by its power, and the holder 2 The thickening agent 13 in the cartridge 10 loaded in the cartridge 1 is pushed out.
When all of the thickening agent 13 in the cartridge 10 has been exhausted and the cartridge 10 is replaced with a new one, the extrusion rod 3
and retraction by the motor 7 is not necessary, just the cover 18 at the tip of the holder 2 at the end.
It is only necessary to open the holder 2, take out the used cartridge 10, and then load a new cartridge 10 into the holder 2 from the opening at its tip while the push rod 3 remains in the forward position. If the switch lever 20 is not pulled at this time, the pinion 8 will be in a state where it can rotate freely as described above, so by pushing the new cartridge 10 backward, the push rod 3 will insert its tip into the piston 12 of the cartridge 10. Move back while keeping them in contact. Therefore, after completing the loading of the cartridge 10, the push rod 3 always pushes the piston 1 of the cartridge 10.
2, and the thickening agent 13 can be extruded immediately. Furthermore, even when a short cartridge 10 is loaded, or when a cartridge 10 that is in use is loaded, the tip of the pusher rod 3 can be easily inserted into the cartridge without any operation of moving the pusher rod 3 backward or forward. Since the cartridge 10 is in contact with the piston 12 of the cartridge 10, even in these cases, the extrusion operation of the thickening agent 13 can be started immediately after loading the cartridge 10 without any effort.

Further, when the switch lever 20 is pulled to drive the motor and the push rod 3 presses the piston 12 of the cartridge 10, when the switch lever 20 is released, the push rod 3 can be moved back.
The internal pressure remaining in the thickening agent 13 of the cartridge 10 causes the piston 12 to retreat. Since the piston 12 is able to retreat when the switch lever 20 is released, the thickening agent 13 is prevented from dripping out of the nozzle 11 due to the internal pressure of the thickening agent 13. Moreover, since the load applied to the output shaft 58 of the gear device can be adjusted according to the amount of rotation of the adjustment shaft 40, the amount of retraction of the piston 12 is determined by the plunger 14 provided at the tip of the push rod 3 and the piston 12. Output shaft 5 without separating
The rotation load of the output shaft 58 can be adjusted so that the load of the output shaft 8 and the internal pressure of the thickening agent 13 are balanced.
That is, after the extrusion rod 3 stops moving forward, the piston 1 does not drip from the nozzle 11 of the cartridge 10, and furthermore, the piston 1 moves back due to the internal pressure of the thickening agent 13.
The push rod 3 can be stopped in a state where the push rod 3 does not separate from the push rod 2. As a result, when the push rod 3 is moved forward next time, the thickening agent 13 is immediately removed.
can be extruded from the nozzle 11, there is no time lag from turning on the switch until the thickening agent 13 is extruded, and the product is comfortable to use.

[Effects of the Invention] In the present invention, a driving means is provided which is connected to the extrusion rod to push out the extrusion rod, and a driving means is provided between the driving means and the extrusion rod and is linked to the stop of the operation of the driving means. A clutch means is provided for releasing the connection between the drive means and the push-out rod to make the push-out rod free, a brake means serving as a resistance is provided on the push-out rod, and an adjusting means is provided for making the amount of resistance by the brake means variable. Therefore, when the thickening agent is extruded and the extrusion is stopped, the residual pressure remaining in the thickening agent is released by retracting the piston, and as a result, after the thickening agent continues flowing out, the In addition, the internal pressure of the thickening agent varies depending on the type and viscosity of the thickening agent such as the caulking agent or sealing agent stored in the storage section, or the difference in the remaining amount. By adjusting this with the adjustment means, it is possible to adjust the piston and extrusion rod so that they do not separate depending on each state, so when extrusion of the thickener is stopped and then extrusion is started again. There is no time lag from when the switch is turned on until the thickener starts coming out, and it is possible to provide an easy-to-use means for extruding the thickener.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing a conventional example, Fig. 2 is a partial sectional view showing problems in the conventional example, Fig. 3 is a vertical sectional view showing an embodiment of the present invention, and Fig. 4 is a cross-sectional view shown in Fig. 3. - an X-ray staircase sectional view; FIG. 5 is an external perspective view of the same as above; FIGS. 6 and 7 are sectional views corresponding to the Y--Y line cross section in FIG. FIG. 8 is a partial sectional view of the vicinity of the clutch means same as above. 3 is an extrusion rod, 4 is a driving means, 6 is a storage section, 11
is a nozzle, 12 is a piston, 13 is a thickener, 47
59 is an adjustment means, and 59 is a clutch means.

Claims (1)

[Claims] 1. A viscosity agent such as a caulking agent or a sealant is contained in a cylindrical storage part having a nozzle at one end in the axial direction, and is arranged so as to be movable along the axial direction within the storage part. This device pushes out the thickening agent contained between the piston and the nozzle from the nozzle by pressing the piston with an extrusion rod that moves from the other axial end of the storage part toward the nozzle. A driving means is provided for connecting to the pushing rod and pushing out the pushing rod, and is provided between the driving means and the pushing rod, and the connection between the driving means and the pushing rod is released when the driving means stops operating. A method for extruding a thickening agent, characterized in that the extrusion rod is provided with a clutch means for freeing the extrusion rod, a brake means serving as resistance is provided on the extrusion rod, and an adjustment means is provided for making the amount of resistance by the brake means variable. Device. 2. Claims characterized in that the adjustment means comprises an adjustment spring that slides on the output shaft of the drive means and applies a load to the rotation of the output shaft, and an adjustment shaft that adjusts the force of the adjustment spring. 2. The thickener extrusion device according to item 1.