A metering cylinder and a glue dispenser provided with the metering cylinder

Abstract

The application discloses a metering cylinder and a glue dispenser with the same, which comprises a metering cylinder body, a metering cylinder cavity arranged in the metering cylinder body, a glue inlet arranged in the metering cylinder body and used for feeding glue into the metering cylinder cavity, a glue outlet channel communicated with the metering cylinder cavity, an elongated metering rod arranged in the metering cylinder cavity and used for pushing glue, and a heating device used for heating the metering cylinder body so as to heat the glue in the metering cylinder cavity. The metering cylinder and the glue dispenser with the same are provided by the application, glue is fed through the glue inlet, the elongated metering rod is pushed to make the glue in the metering cylinder cavity flow out from the glue outlet channel, the metering cylinder body is heated by the heating device, the glue in the metering cylinder cavity is heated through heat conduction of the metering cylinder body, the glue outlet pressure is reduced, and since the components are detachably connected, the corresponding component can be replaced when the component is damaged, so that the maintenance cost is greatly reduced.

Description

Technical Field

[0001] This invention relates to the technical field of glue applicators, and more specifically, to a metering cylinder. Furthermore, this invention also relates to a glue applicator equipped with the aforementioned metering cylinder. Background Technology

[0002] During the operation of adhesive coating equipment, the viscosity of the adhesive can affect the dispensing pressure to a certain extent. Some adhesives are significantly affected by temperature; the lower the temperature, the higher the viscosity, and vice versa. Therefore, if the viscosity of the adhesive can be reduced during dispensing, i.e., by increasing the adhesive temperature, the requirements on the drive components of the adhesive coating equipment can be reduced, as can the pressure on the metering system and equipment wear and tear. Existing adhesive coating equipment heats the adhesive through the adhesive pipeline to reduce its viscosity; however, the heating pipeline is costly and easily damaged, and difficult to replace when damaged, resulting in high maintenance costs.

[0003] In summary, how to provide a low-cost metering cylinder with heating function is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a metering cylinder, which is provided with a metering cylinder cavity and an extended metering rod. The reciprocating motion of the extended metering rod realizes glue dispensing. In addition, a heating device is provided in the metering cylinder to heat the metering cylinder body, thereby realizing the heating of the glue in the metering cylinder cavity, effectively reducing the glue dispensing pressure. Furthermore, the various components of the metering cylinder provided in this application are detachably connected, and if a component is damaged, it can be disassembled and replaced, saving maintenance costs.

[0005] Another object of the present invention is to provide a glue applicator having the above-described metering cylinder.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A metering cylinder, characterized in that it comprises:

[0008] Metering cylinder body, the metering cylinder cavity is located inside the metering cylinder body;

[0009] The glue inlet is located on the surface of the metering cylinder body and is used to feed glue into the metering cylinder cavity.

[0010] The glue outlet channel is located in the metering cylinder and communicates with the metering cylinder cavity;

[0011] An extended measuring rod is installed inside the measuring cylinder cavity to push the glue inside the measuring cylinder cavity;

[0012] A heating device is used to heat the metering cylinder to heat the glue inside the metering cylinder cavity.

[0013] Preferably, a temperature sensor is provided on the inner side of the metering cylinder.

[0014] Preferably, the extended measuring rod is mounted on a linear motion mechanism, which enables the extended measuring rod to reciprocate.

[0015] Preferably, the glue inlet is provided with a glue inlet core, the glue outlet is located on the cylinder cover, the cylinder cover is detachably connected to the metering cylinder, and the glue outlet is provided with a glue outlet connector.

[0016] Preferably, a first sealing element is provided between the glue injection core and the metering cylinder body, a fourth sealing element is provided between the metering cylinder body and the cylinder cover, and the metering cylinder body and the cylinder cover are detachably connected by a fixing element.

[0017] Preferably, the metering cylinder is provided with a guide sealing seat, and the extended metering rod passes through the guide sealing seat.

[0018] Preferably, an oil injection nozzle is provided on the outer side of the metering cylinder, and a lubricating oil cavity is provided between the guide sealing seat and the extended metering rod, with the oil injection nozzle communicating with the lubricating oil cavity.

[0019] Preferably, a first guide band and a second guide band are provided between the extended metering rod and the guide sealing seat, a second seal and a third seal are provided between the metering cylinder and the guide sealing seat, a gland ring is provided between the extended metering rod and the guide sealing seat, and a fifth seal is provided between the guide sealing seat and the metering cylinder cavity.

[0020] Preferably, a pressure sensor is provided at the glue outlet channel.

[0021] A glue applicator comprising any one of the metering cylinders mentioned above.

[0022] The metering cylinder provided by this invention includes a metering cylinder cavity and an extended metering rod. When glue needs to be dispensed, the extended metering rod can be controlled to move upward, closing the glue outlet channel and opening the glue inlet, filling the metering cylinder cavity with glue. When glue needs to be discharged, the extended metering rod can be controlled to move downward, opening the glue outlet channel and closing the glue inlet, squeezing the glue out of the metering cylinder cavity through the glue outlet channel. Furthermore, a heating device is provided inside the metering cylinder to heat the cylinder body, thereby heating the glue inside the metering cylinder cavity and effectively reducing the glue dispensing pressure. In addition, the various components of the metering cylinder provided by this application are detachably connected; if a component is damaged, it can be disassembled and replaced, greatly reducing maintenance costs. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 This is a cross-sectional structural diagram of the metering cylinder provided by the present invention;

[0025] Figure 2 This is a cross-sectional schematic diagram of the metering cylinder body provided by the present invention;

[0026] Figure 3 The right view of the metering cylinder provided by the present invention;

[0027] Figure 4 This is a front view of the metering cylinder provided by the present invention;

[0028] Figure 5 This is a cross-sectional schematic diagram of the metering cylinder cavity provided by the present invention;

[0029] Figure 6 This is a top view of the metering cylinder provided by the present invention.

[0030] Figures 1 to 6 In the accompanying drawings, the reference numerals include:

[0031] 1 is the metering cylinder body, 2 is the metering cylinder cavity, 3 is the glue inlet, 4 is the cylinder cover, 5 is the glue outlet channel, 6 is the extended metering rod, 7 is the heating device, 8 is the temperature sensor, 9 is the glue inlet filler core, 10 is the glue outlet connector, 11 is the first seal, 12 is the guide seal seat, 13 is the oil nozzle, 14 is the lubricating oil cavity, 15 is the first guide belt, 16 is the second guide belt, 17 is the second seal, 18 is the third seal, 19 is the gland ring, 20 is the fourth seal, 21 is the fixing component, 22 is the pressure sensor, and 23 is the fifth seal. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] The core of this invention is to provide a metering cylinder, which includes a metering cylinder cavity and an extended metering rod. The reciprocating motion of the extended metering rod enables glue dispensing. Furthermore, a heating device is installed inside the metering cylinder to heat the cylinder body, thereby heating the glue within the metering cylinder cavity and effectively reducing dispensing pressure. Another core aspect of this invention is to provide a glue applicator incorporating the aforementioned metering cylinder.

[0034] Please refer to Figure 1 The metering cylinder provided in this application includes a metering cylinder body 1, a metering cylinder cavity 2 disposed within the metering cylinder body 1, an inlet 3 disposed on the surface of the metering cylinder body 1 for feeding glue into the metering cylinder cavity 2, a glue outlet channel 5 disposed in the metering cylinder body 1 and communicating with the metering cylinder cavity 2, an extended metering rod 6 disposed inside the metering cylinder cavity 2 for pushing the glue inside the metering cylinder body 2, and a heating device 7 for heating the metering cylinder body 1, thereby heating the glue inside the metering cylinder cavity 2.

[0035] The extended measuring rod 6 can reciprocate within the measuring cylinder cavity 2, and the heating device 7 is located within the measuring cylinder 1.

[0036] Specifically, glue is injected into the metering cylinder cavity 2 through the glue inlet 3. Then, the extended metering rod 6 is pushed, causing the glue to exit through the glue outlet 5. When the extended metering rod 6 reaches the bottom of the metering cylinder cavity 2, it cannot be pushed further, and the glue cannot be squeezed out further. The extended metering rod 6 needs to be pulled back to the top, and glue is replenished through the glue inlet 3. In addition, a heating device 7 is provided inside the metering cylinder 1. The heating device 7 can heat the metering cylinder 1, and the heat can be transferred from the metering cylinder 1 to the metering cylinder cavity 2, thereby heating the glue inside the metering cylinder cavity 2, increasing the glue temperature, and reducing the glue dispensing pressure of the metering rod. Furthermore, the metering cylinder provided by this invention has detachable connections between its components. When a component is damaged and cannot be used, it can be disassembled for repair or replacement, while retaining the other components, greatly saving maintenance costs.

[0037] Optionally, the metering cylinder 1 can be made of aluminum, a metal with good thermal conductivity.

[0038] Optionally, a scale can be set on the extended measuring rod 6 to allow for intuitive observation of the amount of adhesive dispensed during use.

[0039] Based on the above embodiment, a temperature sensor 8 is provided on the inner side of the metering cylinder 1.

[0040] Specifically, a temperature sensor 8 is installed inside the metering cylinder 1 to measure its temperature, thereby monitoring the temperature of the adhesive inside the metering cylinder cavity 2. Furthermore, a PLC (Programmable Logic Controller) can be connected to the temperature sensor 8, allowing the sensor to feed back the temperature to the PLC. The PLC then controls a switch so that when the temperature of the metering cylinder 1 reaches the set value, the heating device 7 stops heating; conversely, when the temperature of the metering cylinder 1 is lower than or equal to the set value, the heating device 7 resumes heating.

[0041] In some embodiments, the extended measuring rod 6 is mounted on a linear motion mechanism that enables the extended measuring rod 6 to reciprocate.

[0042] Optionally, the linear motion mechanism can be a cylinder.

[0043] In some embodiments, the glue inlet 3 is provided with a glue inlet core 9, the glue outlet channel 5 is provided on the cylinder cover 4, the cylinder cover 4 is detachably connected to the metering cylinder 1, and the glue outlet channel 5 is provided with a glue outlet connector 10.

[0044] Specifically, a glue inlet 9 is installed at the glue inlet 3. After glue feeding is completed, a suitable threaded device can be selected to seal the glue inlet 9, preventing glue from flowing out of the glue inlet 3 during the process of the extended metering rod 6 pushing the glue. When glue feeding is needed, the threaded device can be removed to feed glue. A glue outlet connector 10 is installed at the glue outlet channel 5. When glue feeding is needed, a valve can be installed to seal the glue outlet connector 10. When glue feeding is completed and glue application is needed, the valve can be opened, and the glue inlet 9 can be sealed by the threaded device to apply glue. The glue outlet channel 5 is installed on the cylinder cover 4. The cylinder cover 4 is detachably connected to the metering cylinder 1. The glue outlet channel 5 can be removed by removing the cylinder cover 4. Since the metering cylinder is not used for a long time, the glue remaining in the glue outlet channel 5 will solidify, causing the glue outlet channel 5 to close. The heating device cannot heat the glue in the glue outlet channel 5 sufficiently. When it is unusable, the glue outlet channel 5 can be disassembled and replaced.

[0045] In some embodiments, a first sealing element 11 is provided between the glue injection core 9 and the metering cylinder 1, a fourth sealing element 20 is provided between the metering cylinder 1 and the cylinder cover 4, and the metering cylinder 1 and the cylinder cover 4 are detachably connected by a fixing element 21.

[0046] Specifically, a first sealing element 11 is provided between the glue inlet core 9 and the metering cylinder 1. This can effectively prevent glue from flowing out between the glue inlet core 9 and the metering cylinder 1 after the glue inlet 3 is completed and sealed. It also effectively prevents the glue from filling the space between the glue inlet core 9 and the metering cylinder 1, so that the glue solidifies when the metering cylinder is not in use, causing the glue inlet core 9 and the metering cylinder 1 to bond and fix together.

[0047] Optionally, the first seal 11 may be an O-ring or other seals with good sealing effect.

[0048] Optionally, the fastener 21 can be a bolt, and the connection method can be a threaded connection.

[0049] A fourth sealing element 20 is provided between the metering cylinder 1 and the cylinder cover 4 to seal the connection gap between the metering cylinder 1 and the cylinder cover 4, ensuring airtightness.

[0050] Optionally, the fourth seal 20 may be an O-ring or other seals with good sealing performance.

[0051] In some embodiments, the metering cylinder 1 is provided with a guide sealing seat 12, and the extended metering rod 6 passes through the guide sealing seat 12.

[0052] Specifically, a guide sealing seat 12 is provided inside the metering cylinder 1, and an extended metering rod 6 passes through the guide sealing seat 12. The guide sealing seat 12 and the extended metering rod 6 can seal the metering cylinder cavity 2. The extended metering rod 6 is restricted by the guide sealing seat 12 and can only move in a straight line when pushing the glue, which can effectively avoid wear on the metering cylinder cavity 2 when the extended metering rod 6 pushes the glue and improve the service life of the metering cylinder cavity 2.

[0053] In some embodiments, an oil injection nozzle 13 is provided on the outer side of the metering cylinder 1, and a lubricating oil cavity 14 is provided between the guide sealing seat 12 and the extended metering rod 6, with the oil injection nozzle 13 communicating with the lubricating oil cavity 14.

[0054] The lubricating oil cavity 14 encloses part of the extended measuring rod 6.

[0055] Specifically, a closable grease nipple 13 is provided on the outside of the metering cylinder 1. Lubricating oil can be injected into the lubricating oil cavity 14 located within the guide seal seat 12 through the grease nipple 13 to lubricate the extended metering rod 6 and reduce friction. Furthermore, a lubricating oil storage device is provided on the outside of the metering cylinder 1, which is also connected to the lubricating oil cavity 14. When excessive lubricating oil is injected into the lubricating oil cavity 14 through the grease nipple 13, the excess lubricating oil will enter the lubricating oil cavity. A valve can be installed between the lubricating oil cavity 14 and the lubricating oil storage device. By closing the valve, the excess lubricating oil is stored in the lubricating oil storage device. When the extended metering rod 6 needs lubrication, the valve can be opened to use the stored lubricating oil. Preferably, the lubricating oil storage device can be made transparent, allowing for direct observation of the excess lubricating oil and the storage status.

[0056] In some embodiments, a first guide belt 15 and a second guide belt 16 are provided between the metering cylinder 1 and the guide sealing seat 12, a second seal 17 and a third seal 18 are provided between the metering cylinder 1 and the guide sealing seat 12, a glancing ring 19 is provided between the extended metering rod 6 and the guide sealing seat 12, and a fifth seal 23 is provided between the guide sealing seat 12 and the metering cylinder cavity 2.

[0057] Specifically, a first guide belt 15 and a second guide belt 16 are provided between the metering cylinder 1 and the guide sealing seat 12, serving as a guide to prevent wear. The first guide belt 15 and the second guide belt 16 are highly wear-resistant, low-friction, heat-resistant, and chemically corrosion-resistant, effectively preventing particulate matter from damaging the sealing components. They also have vibration absorption properties, excellent wear resistance, and good dry running characteristics. A second sealing element 17 and a third sealing element 18 are provided between the metering cylinder 1 and the guide sealing seat 12 to seal the space between them, ensuring the sealing of the metering cylinder cavity 2 inside the device. A gland ring 19 is provided between the extended metering rod 6 and the guide sealing seat 12. The gland ring 19 is a double-acting piston seal ring with low friction, no creep, low starting force, and high pressure resistance, maximizing the clamping of the extended metering rod 6 by the guide sealing seat 12 to achieve a sealing effect. A fifth sealing element 23 is provided in the guide sealing seat 12 and the metering cylinder cavity 2 to completely seal the metering cylinder cavity 2 and prevent the glue in the metering cylinder cavity 2 from flowing into the guide sealing seat 12 and causing damage to the component.

[0058] Optionally, the second seal 17 and the third seal 18 may be O-rings or other seals with good sealing effect.

[0059] Optionally, the fifth seal 23 may be a plug seal or other seals with good sealing effect.

[0060] In some embodiments, a fourth sealing element 20 is provided between the metering cylinder 1 and the cylinder cover 4, and the metering cylinder 1 and the cylinder cover 4 are detachably connected by a fastener 21.

[0061] Based on the above embodiment, a pressure sensor 22 is provided at the glue dispensing channel 5.

[0062] Specifically, the pressure sensor 22 is located on the cylinder cover 4 and outside the metering cylinder 1. The end of the pressure sensor 22 extends into the dispensing channel 5 and is tightly fitted to the cylinder cover 4 to ensure the sealing of the metering cylinder cavity 2. The pressure sensor 22 monitors the air pressure in the metering cylinder cavity 2 through the dispensing channel 5 connected to the metering cylinder cavity 2 to prevent the air pressure in the metering cylinder cavity 2 from being too low and thus unable to dispense glue. When the pressure sensor 22 shows that the air pressure in the metering cylinder cavity 2 is low, the glue inlet 3 needs to be opened to balance the air pressure and then closed before glue can be dispensed.

[0063] In addition to the metering cylinder described above, the present invention also provides a glue applicator having the metering cylinder disclosed in the above embodiments. For the structure of other parts of the glue applicator, please refer to the prior art, which will not be repeated here.

[0064] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0065] The metering cylinder and the glue applicator equipped with the metering cylinder provided by the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A metering cylinder, characterized in that It comprises: a metering cylinder (1), a metering cylinder cavity (2) is arranged in the metering cylinder (1); a glue inlet (3) is arranged on the surface of the metering cylinder (1) to feed glue into the metering cylinder cavity (2); a glue outlet channel (5) is arranged in the metering cylinder (1) and communicates with the metering cylinder cavity (2); a lengthened metering rod (6) is arranged in the metering cylinder cavity (2) to push the glue in the metering cylinder cavity (2); a heating device (7) is arranged to heat the metering cylinder (1) to heat the glue in the metering cylinder cavity (2); the metering cylinder (1) can be heated by the heating device (7), and the heat can be transferred from the metering cylinder (1) to the metering cylinder cavity (2) to heat the glue in the metering cylinder cavity (2); a temperature sensor (8) is arranged on the inner side of the metering cylinder (1); a guide sealing seat (12) is arranged in the metering cylinder (1), and the lengthened metering rod (6) penetrates through the guide sealing seat (12); an oil injection nozzle (13) is arranged on the outer side of the metering cylinder (1), a lubricating oil cavity (14) is arranged between the guide sealing seat (12) and the lengthened metering rod (6), and the oil injection nozzle (13) communicates with the lubricating oil cavity (14).

2. The gage cylinder of claim 1, wherein, The lengthened metering rod (6) is installed on a linear motion mechanism, and the linear motion mechanism can make the lengthened metering rod (6) reciprocate.

3. The gage cylinder of claim 1, wherein, A glue feeding core (9) is arranged at the glue inlet (3), the glue outlet channel (5) is arranged on a cylinder cover (4), the cylinder cover (4) is detachably connected to the metering cylinder (1), and a glue outlet connector (10) is arranged at the glue outlet channel (5).

4. The gage cylinder of claim 3, wherein, A first sealing member (11) is arranged between the glue feeding core (9) and the metering cylinder (1), a fourth sealing member (20) is arranged between the metering cylinder (1) and the cylinder cover (4), and the metering cylinder (1) and the cylinder cover (4) are detachably connected through a fixing member (21).

5. The gage cylinder of claim 1, wherein, A first guide belt (15) and a second guide belt (16) are arranged between the lengthened metering rod (6) and the guide sealing seat (12), a second sealing member (17) and a third sealing member (18) are arranged between the metering cylinder (1) and the guide sealing seat (12), a gland ring (19) is arranged between the lengthened metering rod (6) and the guide sealing seat (12), and a fifth sealing member (23) is arranged between the guide sealing seat (12) and the metering cylinder cavity (2).

6. Metering cylinder according to any one of claims 1 to 5, characterized in that A pressure sensor (22) is arranged at the glue outlet channel (5).

7. A glue applicator characterized by, The metering cylinder comprises any one of claims 1-6.

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