Recyclable quantitative cylinder system

Abstract

The utility model relates to the technical field of quantitative cylinder gluing, and particularly discloses a recyclable quantitative cylinder system which comprises a glue gun and two quantitative cylinders, an independent glue supply pipeline is arranged between the discharging end of each quantitative cylinder and a feeding cavity of the glue gun, the two glue supply pipelines are communicated through the feeding cavity, each glue supply pipeline is provided with a switch valve, and the switch valve is communicated with the glue gun. And the temperature control module is used for controlling the temperature of the glue supply pipeline. The scheme is used for solving the problem that a large amount of sizing materials are wasted due to the fact that the sizing materials in a quantitative cylinder system are not used for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of quantitative cylinder gluing, in particular to a recyclable quantitative cylinder system. Background Technique

[0002] The existing gluing workstation consists of two quantitative cylinders, a discharge selection valve, a glue supply hose, a gluing robot, a glue gun, etc. The glue is discharged by the alternating operation of the quantitative cylinders. After the glue flowing out of the quantitative cylinder passes through the discharge selection valve, it finally enters the glue gun through the glue supply hose and is extruded. The robot drives the glue gun to move along a set path during this process. The current method is described in, for example, the double-station high-viscosity liquid quantitative filling device with the patent publication / opening number CN201940203U and a gluing device with the patent publication number CN115780180A.

[0003] However, when the current quantitative cylinder glue supply system is in a non-working state or the glue in the quantitative cylinder and pipeline does not flow out in time, the glue staying on the glue supply hose (glue supply pipeline) for a long time will not meet the viscosity requirement of the glue during the next formal use. The reason is that the viscosity of the glue in the glue supply pipeline is greatly affected by temperature. When the ambient temperature is low, the glue material will become thick, and the thickening of the glue material will cause the glue type extruded from the glue gun to become narrower or the gun to be blocked; when the ambient temperature is high, the glue material will become thin, and the thinning of the glue material will cause the glue type to become wider or the glue to drop. Whether it thickens or thins, it will always be difficult for the glue extruded from the front end to meet the requirements after the glue gun extrudes the material.

[0004] In order to avoid the unqualified glue staying on the glue supply pipeline of the quantitative cylinder gluing system from affecting the gluing quality after extrusion, the usual solution is to discharge a large amount of glue before gluing, discharging the unqualified glue into the waste bucket as much as possible to ensure that the glue gun extrudes qualified glue material. However, this approach will waste a large amount of glue material, increase production costs, and also increase VOC emissions, which is not conducive to environmental protection. Content of the Utility Model

[0005] The utility model aims to provide a recyclable quantitative cylinder system to solve the problem of large waste of glue material caused by the long-term non-use of the glue material in the quantitative cylinder system.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A recyclable quantitative cylinder system includes a glue gun and two quantitative cylinders. An independent glue supply pipeline is provided between the discharge end of each quantitative cylinder and the feed cavity of the glue gun. The two glue supply pipelines are connected through the feed cavity. A switching valve is arranged on each glue supply pipeline, and a temperature control module for controlling the temperature of the glue supply pipeline is further included.

[0008] The principle and advantages of this solution are as follows: When adopting this solution, a temperature control module is set on the glue supply pipeline. Through the temperature control module, the temperature of the glue flowing through the glue supply pipeline is regulated to ensure that the glue flowing through the temperature control module is at the temperature required during the glue coating operation. As long as the glue flows, the temperature of the glue in the glue supply pipeline can reach the working requirements.

[0009] Specifically, when the metering cylinder system is in a non-working state, first cut off the incoming material pipeline of the metering cylinder to prevent more glue from entering the metering cylinder system, and control the glue gun to stop discharging glue; then control all the switch valves on the glue supply pipeline to be opened; then control one of the metering cylinders to discharge material, while the other metering cylinder is filled with material. Since both metering cylinders are connected to the glue supply pipeline, when one metering cylinder discharges material and the other is filled with material, the two glue supply pipelines are connected through the feed cavity of the glue gun, and the glue on the glue supply pipeline flows. During the flow process, the glue flows through the temperature control module, thereby realizing the temperature control of the glue, and further ensuring that when glue coating work is required, there is more glue on the glue supply pipeline to meet the usage requirements. This not only reduces the amount of unqualified glue when the glue is not used for a long time, reduces the amount of unqualified glue that needs to be discharged at the front end of glue coating, but also helps to extend the effective glue coating time because the amount of glue at the extrusion front end is reduced.

[0010] In addition, in the normal working state, the temperature of the incoming material received by the metering cylinder may not be exactly within the required temperature range. By setting a temperature control module on the glue supply pipeline in this solution, the temperature requirement for the glue used in the metering cylinder can be greatly reduced, thereby greatly reducing the requirement for the incoming glue material.

[0011] Preferably, as an improvement, the discharge end of one metering cylinder is connected to the feed end of the other metering cylinder through an auxiliary pipeline, and a switch valve is provided on the auxiliary pipeline.

[0012] Beneficial effects: When adopting this solution, through the setting of the auxiliary pipeline, the entire metering cylinder system forms a closed-loop pipeline by itself. Thus, even if the path of the glue supply pipeline is too long and the amount of glue in the metering cylinder is much lower than the glue on the glue supply pipeline (in actual use, due to the wide range of movement required by the glue gun of the metering cylinder system, the length of the glue supply pipeline is often long, so the discharge flow rate of each metering cylinder is much lower than the glue on the glue supply pipeline), under the discharge-filling cycle of the metering cylinder, the glue in the entire metering cylinder system can flow along the entire closed-loop pipeline, ensuring that all the glue on the annular pipeline can flow through the temperature control module during a long non-working state. Therefore, when switching from the non-working state to the working state, it is completely unnecessary to extrude the glue that has not been temperature-regulated, thus avoiding the extrusion of glue, avoiding waste of glue, and improving the temperature consistency of the glue.

[0013] Preferably, as an improvement, a three-way reversing valve is provided between the auxiliary pipeline, the glue feeding pipeline and the discharging end of the metering cylinder. This three-way reversing valve is equivalent to a switching valve on one of the glue feeding pipelines and is also equivalent to a switching valve on the auxiliary pipeline.

[0014] Preferably, as an improvement, at least one of the glue supply pipelines is connected with a buffer. The buffer has a buffer chamber, and a switching valve is provided on the pipeline connecting the buffer chamber and the glue supply pipeline, and the glue in the glue supply pipeline can enter the buffer.

[0015] Beneficial effects: When the metering cylinder system is in a non-working state, the two metering cylinders are often full due to fast feeding. If both metering cylinders are full, the entire metering cylinder system cannot have glue flowing. In this solution, by adding a buffer on the glue supply pipeline, after the switching valve between the buffer and the glue supply pipeline is opened, the operation of the metering cylinder can be controlled. For example, at least one metering cylinder is in the discharging state. The discharging of the metering cylinder increases the pressure of the glue supply pipeline. At this time, the switching valve communicating with the buffer chamber of the buffer is opened, and the glue will enter the buffer chamber with lower pressure for temporary storage. After the glue enters, the switching valve communicating with the buffer chamber is closed. After part of the glue in the metering cylinder system enters the buffer chamber, one of the metering cylinders is controlled to be filled with material, and the other metering cylinder continues to discharge, so that the glue can still flow along the glue supply pipeline. The flowing glue can ensure the temperature of the glue in the non-working state after flowing through the temperature control module. In addition, the flowing glue also makes the temperature of the glue more uniform.

[0016] When the metering cylinder system needs to enter the formal working state, since the temperature of the glue on the glue supply pipeline is maintained, the glue on the glue supply pipeline can be directly used. For the glue in the buffer, at this time, only need to control the switching valve to open and make the pressure of the glue supply pipeline lower than the pressure of the buffer chamber, so that the glue in the buffer chamber flows out to the glue supply pipeline. After the glue flows out of the buffer chamber, control the switching valve to close, and then control the metering cylinder to discharge, so as to push the glue on the glue supply pipeline. During the pushing process, the glue discharged from the buffer chamber will also flow through the temperature control module, so as to realize the use of the glue after temperature control and ensure that all the glue will not be wasted.

[0017] Preferably, as an improvement, the buffer is a suction cylinder or an accumulator.

[0018] Beneficial effects: When adopting this solution, if it is a suction cylinder, such as a piston cylinder, by controlling the movement of the piston in the piston cylinder, the piston cylinder can suck or extrude the rubber compound; if an accumulator is adopted, due to the pressure regulation function of the accumulator itself, after the on-off valve on the pipeline communicating with the temporary storage chamber is opened, when the pressure in the temporary storage chamber of the accumulator is small, the rubber compound enters the accumulator from the rubber supply pipeline for storage, and when the pressure in the accumulator is greater than that in the rubber supply pipeline, the rubber compound is discharged from the accumulator. Compared with the suction cylinder, the accumulator has lower cost and simpler control.

[0019] Preferably, as an improvement, the temperature control module is provided on each rubber supply pipeline to reduce the requirements for the position of the rubber supply pipeline.

[0020] Preferably, as an improvement, it further includes a glue application driver, and a glue gun is installed at the output end of the glue application driver to facilitate driving the glue gun for automatic glue application through the glue application driver, thereby improving the automation degree of glue application.

[0021] Preferably, as an improvement, the glue application driver is a glue application robot.

[0022] Preferably, as an improvement, the temperature control module is a water bath temperature control module.

[0023] Preferably, as an improvement, an auxiliary pipeline is connected to the metering cylinder at the feeding end, and a material incoming pipeline is also connected thereto. The material incoming pipeline and the auxiliary pipeline share a section of feeding pipeline through a tee joint, so that the pipeline is simpler and the cost is lower. Description of the drawings

[0024] Figure 1 It is a schematic structural diagram of the recyclable metering cylinder system according to Embodiment 1 of the present invention in the working state (in the figure, the glue application robot is deliberately not inserted into the glue gun for the convenience of showing the relationship with the glue gun).

[0025] Figure 2 It is a schematic diagram of Embodiment 1 of the present invention in the state of the accumulator sucking materials.

[0026] Figure 3 It is a schematic diagram of the state of Embodiment 1 of the present invention when metering cylinder B discharges materials and metering cylinder A fills materials.

[0027] Figure 4 It is a schematic diagram of the state of Embodiment 1 of the present invention when metering cylinder A discharges materials and metering cylinder B fills materials.

[0028] Figure 5 It is a schematic diagram of Embodiment 1 of the present invention in the state of the accumulator discharging materials.

[0029] Figure 6 It is a schematic structural diagram of the recyclable metering cylinder system according to Embodiment 2 of the present invention in the working state.

[0030] Figure 7 This is a schematic diagram of the recyclable metering cylinder system according to the second embodiment of the present utility model in the state of the accumulator sucking material.

[0031] Figure 8 This is a schematic diagram of the recyclable metering cylinder system according to the second embodiment of the present utility model in the state where the metering cylinder A directly sends the rubber material to the metering cylinder B.

[0032] Figure 9 This is a schematic diagram of the recyclable metering cylinder system according to the second embodiment of the present utility model in the state where the metering cylinder B discharges material and the metering cylinder A fills material from the rubber supply pipeline. Specific embodiments

[0033] The following is a further detailed description through specific embodiments:

[0034] The reference numerals in the accompanying drawings of the specification include: 1 - metering cylinder A, 2 - metering cylinder B, 3 - rubber gun, 4 - rubber supply pipeline, 5 - temperature control module, 6 - accumulator, 61 - temporary storage chamber, 7 - gluing robot, 8 - incoming material pipeline, 9 - auxiliary pipeline.

[0035] The embodiment is basically as shown in the appendix Figures 1 to 5 as shown.

[0036] A recyclable metering cylinder system includes a rubber gun 3 and two metering cylinders. The two metering cylinders in this embodiment are the metering cylinder A and the metering cylinder B respectively, and the rubber materials used in the two metering cylinders are the same.

[0037] An independent rubber supply pipeline 4 is provided between the discharge end of each metering cylinder and the feed cavity of the rubber gun 3. The two rubber supply pipelines 4 are connected through the feed cavity. A switching valve and a temperature control module 5 are installed on each rubber supply pipeline 4. The switching valve connecting the metering cylinder A is V1, and the switching valve connecting the metering cylinder B is V2. The temperature control module 5 is a water bath temperature control module 5, and the temperature control module 5 is used to keep the rubber material flowing through the temperature control module 5 at a set stability.

[0038] A temporary storage device is connected to one of the rubber supply pipelines 4. The temporary storage device is provided with a temporary storage chamber 61. A switching valve is provided on the pipeline connecting the temporary storage chamber 61 and the rubber supply pipeline 4. The rubber material in the rubber supply pipeline 4 can enter the temporary storage device. In this embodiment, the switching valve connecting the temporary storage chamber 61 is V3.

[0039] The accumulator is the suction cylinder or the accumulator 6. In this embodiment, the accumulator is the accumulator 6, and the accumulator 6 adopts a piston type / diaphragm type / or bladder type accumulator 6 in the prior art. When the pressure in the storage chamber 61 of the accumulator 6 is lower than that of the glue supply pipeline 4, the glue in the glue supply pipeline 4 can enter the storage chamber 61 of the accumulator 6; when the pressure in the storage chamber 61 of the accumulator 6 exceeds the pressure on the glue supply pipeline 4, the glue in the storage chamber 61 flows out of the storage chamber 61.

[0040] To improve the automation degree of glue application, the glue gun 3 is installed on the glue application driver. In this embodiment, the glue application driver is the glue application robot 7. The glue application robot 7 drives the glue gun 3 to move to complete the automatic glue application along the set path.

[0041] When adopting this embodiment, there are the following several states:

[0042] I. Working state

[0043] Combined with Figure 1 In the working state, the metering cylinder A and the metering cylinder B supply materials alternately to ensure the continuity of the glue output of the glue gun 3.

[0044] II. Non - working state

[0045] Combined with Figures 2 to 4 , when the metering cylinder system is in the non - working state, the glue gun 3 does not output glue, the incoming material pipelines 8 of the metering cylinder A and the metering cylinder B are blocked, and the following Figure 2 operation is first performed, that is, the switching valve V1 and the switching valve V3 are opened, and the switching valve V2 is closed. At this time, the metering cylinder A is controlled to discharge material, and the pressure in the storage chamber 61 of the accumulator 6 is lower than that of the glue supply pipeline 4, so the glue enters the accumulator 6 for temporary storage, and then the switching valve V3 is closed.

[0046] Then the following Figure 3 operation is performed, that is, the switching valve V2 is controlled to open, the metering cylinder B is controlled to discharge material, and the metering cylinder A is controlled to fill material. Under the one - out - one - in operation of the two metering cylinders, the glue can move quickly along the glue supply pipeline 4. During the movement of the glue, more glue flows through the temperature control module 5.

[0047] When the metering cylinder A is filled with glue, the following Figure 4 operation is performed, controlling the metering cylinder A to discharge material while the metering cylinder B fills material. At this time, the glue moves in the reverse direction along the glue supply pipeline 4. Under the alternation of Figure 3 and Figure 4 , the glue circulates between the glue supply pipeline 4 and the metering cylinder, thereby reducing the part of the glue in the metering cylinder system that cannot be temperature - controlled all the time, and thus reducing the waste of the front - end glue during glue application.

[0048] III. Discharge state of the accumulator 6

[0049] Combined with Figure 5 , when it is necessary to discharge the rubber compound in the accumulator 6 for use, it is often what needs to be done when switching from the non-working state to the working state. At this time, the switching valve V2 is closed, the switching valve V3 is opened, and the switching valve V1 is opened, and the metering cylinder A is filled with material, so as to suck the rubber compound in the storage chamber 61 of the accumulator 6 into the metering cylinder A or the rubber supply pipeline 4.

[0050] Embodiment 2

[0051] Combined with Figures 6 to 9 , the difference between Embodiment 2 and Embodiment 1 is that this embodiment also sets an auxiliary pipeline 9 between the discharge end of the metering cylinder A and the feed end of the metering cylinder B. The auxiliary pipeline 9 is provided with a switching valve. To reduce the usage of valves, a three-way reversing valve is set between the auxiliary pipeline 9, the rubber inlet pipeline and the discharge end of the metering cylinder A. This three-way reversing valve is equivalent to the switching valve on one of the rubber inlet pipelines and is also equivalent to the switching valve on the auxiliary pipeline 9. That is, the switching valve V1 is a three-way reversing valve, that is, this embodiment is the reversing valve V1.

[0052] When adopting this embodiment, in the working state, the reversing valve V1 is switched to the situation where the metering cylinder A is communicated with the rubber supply pipeline 4, so that the auxiliary pipeline 9 does not play a role, and the working state is the same as the corresponding state of Embodiment 1.

[0053] The auxiliary pipeline 9 and the incoming material pipeline 8 of the metering cylinder B share a section of feed pipeline through a three-way joint, so that the pipeline is simpler and the cost is lower. In addition, to facilitate the control of the incoming material of the metering cylinder, a switching valve V4 is installed on the incoming material pipeline 8.

[0054] In the non-working state, the flow of the rubber compound is different from that in Embodiment 1 and needs to be combined with Figures 7 to 9 .

[0055] In the non-working state, the following steps are adopted:

[0056] S1. The accumulator 6 sucks material: Control the switching valve V2 and the switching valve V3 to be both opened, control the metering cylinder B to discharge material. At this time, the rubber compound on the rubber supply pipeline 4 enters the accumulator 6, and the accumulator 6 sucks material (combined with Figure 7 ).

[0057] S2. Transfer the rubber compound in the metering cylinder A to the metering cylinder B: Close the switching valve V2 and the switching valve V3, control the reversing valve V1 to switch to the situation where the discharge end of the metering cylinder A is communicated with the auxiliary pipeline 9, and then control the metering cylinder A to discharge material, while the metering cylinder B is filled with material, so that the rubber compound in the metering cylinder A enters the metering cylinder B (combined with Figure 8 ).

[0058] S3. The rubber compound in metering cylinder B moves along the rubber supply pipeline 4 to metering cylinder A: The switch valve V3 remains closed, the switch valve V2 is opened, and the change-over valve V1 is controlled to switch to the state where metering cylinder A is in communication with the rubber supply pipeline 4; then, the discharge of metering cylinder B is controlled, and the rubber compound on the rubber supply pipeline 4 moves towards metering cylinder A (combined with Figure 9 ).

[0059] Repeat the above steps S2 - S3 so that the rubber compound in the metering cylinder system continuously circulates in one direction in the path of metering cylinder A - auxiliary pipeline 9 - metering cylinder B - rubber supply pipeline 4 - the feed cavity of rubber gun 3 - rubber supply pipeline 4 - metering cylinder A.

[0060] Compared with the first embodiment, this embodiment realizes the circulating movement of the rubber compound except for that in the accumulator 6, thereby ensuring that the rubber compound on the entire extremely long pipeline always circulates through the temperature control module 5, so as to ensure that when switching from the non - working state to the working state, there is no situation of the front - end rubber compound being extruded, which not only avoids the waste of rubber compound but also greatly improves the production efficiency.

[0061] The above are only the embodiments of the present utility model. Specific technical solutions and / or common knowledge such as characteristics well - known in the art are not described in detail herein. It should be noted that for those skilled in the art, without departing from the technical solution of the present utility model, several deformations and improvements can be made, and these should also be regarded as the protection scope of the present utility model, which will not affect the implementation effect of the present utility model and the practicality of the patent. The protection scope required by this application should be subject to the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. A circulable quantitative cylinder system, comprising a glue gun and two quantitative cylinders, wherein an independent glue supply pipeline is provided between the discharge end of each quantitative cylinder and the feed chamber of the glue gun, and characterized in that: The two glue supply pipelines are connected through the feed cavity, and each glue supply pipeline is provided with a switch valve, and also includes a temperature control module for controlling the temperature of the glue supply pipeline.

2. A circulatable metering cylinder system according to claim 1, characterized in that: The discharge end of one of the metering cylinders is communicated with the feed end of the other metering cylinder through an auxiliary pipeline, and a switch valve is arranged on the auxiliary pipeline.

3. A circulatable metering cylinder system according to claim 2, characterized in that: A three-way reversing valve is arranged between the auxiliary pipeline, the glue inlet pipeline and the discharge end of the metering cylinder. The three-way reversing valve is equivalent to the switch valve on one of the glue inlet pipelines and also equivalent to the switch valve on the auxiliary pipeline.

4. A circulatable metering cylinder system according to any one of claims 1 to 3, characterized in that: At least one of the glue supply pipelines is connected to a temporary storage device, the temporary storage device has a temporary storage cavity, and a switch valve is provided on the pipeline connecting the temporary storage cavity and the glue supply pipeline, so that the glue in the glue supply pipeline can enter the temporary storage device.

5. A circulatable metering cylinder system according to claim 4, characterized in that: The temporary storage device is a suction cylinder or an accumulator.

6. A circulatable metering cylinder system according to claim 1, characterized in that: The temperature control module is arranged on each rubber supply pipeline.

7. A circulatable metering cylinder system according to claim 1, characterized in that: The utility model also comprises a glue coating driver, and a glue gun is installed at the output end of the glue coating driver.

8. A circulatable metering cylinder system according to claim 7, characterized in that: The gluing driver is a gluing robot.

9. A circulatable metering cylinder system according to any one of claims 1-3, 5-8, characterized in that: The temperature control module is a water bath temperature control module.

10. A circulatable metering cylinder system according to claim 2, characterized in that: The metering cylinder connected with the feed end by an auxiliary pipeline is also connected with the incoming pipeline, and the incoming pipeline and the auxiliary pipeline share a section of the feed pipeline through a three-way joint.

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