Glue discharging device and glue distributing equipment

Abstract

The utility model discloses a glue discharging device and glue distributing equipment. The glue discharging device comprises a glue pipe; a glue inlet of the glue pipe is communicated with a glue outlet of the glue outlet pump; a glue outlet of the glue pipe is communicated with an inlet of the glue dispensing gun head; the first pressure sensor is used for detecting an inlet pressure value at a glue inlet of the glue pipe; and the second pressure sensor is used for detecting an outlet pressure value at the glue outlet of the glue pipe. When foreign matters in the rubber tube are increased, the inner wall of the rubber tube becomes smaller, the foreign matters increase the upstream pressure value of the foreign matters, and the inlet pressure value is greater than the outlet pressure value at the moment. An operator can judge whether the rubber pipe is blocked or not according to the inlet pressure value and the outlet pressure value, and after the rubber pipe is judged to be blocked, the operator can conveniently replace or maintain the rubber pipe in time so as to solve the blocking problem. The internal state of the rubber pipe can be monitored in real time, the situations of less rubber, rubber breakage and the like caused by internal blockage of the rubber pipe are avoided, and the stability of the rubber distribution process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile lamp manufacturing equipment, in particular to a glue discharging device and glue spreading equipment. Background Art

[0002] Automobile lighting plays an important role in traffic safety, so currently vehicles are equipped with a variety of automobile lamps according to different functions. In the manufacturing process of automobile lamps, the glue process is required to achieve the bonding of two or more parts of automobile lamps. The amount of glue directly affects the quality of the lamp. When the glue is too little, it will affect the sealing of the lamp. In bad weather, the internal circuit may short-circuit due to water entering the lamp, causing traffic safety accidents; when the glue is too much, the appearance does not meet the requirements, causing customer dissatisfaction and reducing user perception.

[0003] The stability of the glue dispensing process is now monitored by statistical process control, and timely measures are taken when abnormalities occur in the process. SPC (Statistical Process Control) uses charts to monitor the process, analyzes process changes through statistical methods, identifies abnormal changes in the process, and takes corrective measures in a timely manner, thereby ensuring process stability and quality consistency.

[0004] In the prior art, glue is applied by glue applying equipment, which generally includes glue applying gun head, glue barrel, pressure plate, gear pump, etc. Among them, the rubber hose connecting the glue applying gun head and the glue barrel cannot be judged by conventional means whether it is normal. As a key component, the rubber hose can only be maintained preventively or maintained and replaced at a fixed time. However, the rubber hose may still have the phenomenon of insufficient glue, glue breakage and other unstable glue output during the maintenance cycle.

[0005] If the glue output of the glue dispensing equipment is unstable, the product quality will be unstable, that is, the quality of the products produced may fluctuate, resulting in some products being qualified and some being unqualified, affecting the stability and reliability of the products. Whether the hose is blocked cannot be determined by conventional means, and can only be verified by replacing the hose. The verification cost is high and the verification cycle is long, which will waste a lot of time and resources.

[0006] Therefore, how to judge whether the hose is blocked to avoid the problem of unstable glue output caused by hose blockage has become a technical problem that needs to be solved urgently by technicians in this field. Utility Model Content

[0007] In view of this, the purpose of the utility model is to provide a glue dispensing device to determine whether the rubber hose is blocked, so as to avoid the problem of unstable glue output caused by the blockage of the rubber hose;

[0008] Another object of the utility model is to provide a glue spreading device having the above glue spreading device.

[0009] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0010] A glue discharging device, comprising:

[0011] Hose;

[0012] A glue discharge pump, wherein the glue inlet of the glue hose is connected to the glue outlet of the glue discharge pump;

[0013] A glue gun head, wherein the glue outlet of the glue hose is connected to the inlet of the glue gun head;

[0014] A first pressure sensor, used to detect an inlet pressure value at a glue inlet of the rubber hose;

[0015] The second pressure sensor is used to detect the outlet pressure value at the rubber outlet of the rubber hose.

[0016] Optionally, the above-mentioned glue discharging device further includes a display device, wherein the display device is used to display the inlet pressure value and the outlet pressure value, and / or the display device is used to display the difference between the inlet pressure value and the outlet pressure value.

[0017] Optionally, the glue discharging device further comprises an alarm device, and when the difference between the inlet pressure value and the outlet pressure value exceeds a safety difference, the alarm device sounds an alarm.

[0018] Optionally, in the above-mentioned glue discharging device, the alarm device includes a sound alarm or a sound and light alarm; and / or,

[0019] The glue discharging pump is a gear pump.

[0020] Optionally, in the above-mentioned glue discharging device, the first pressure sensor is arranged at the glue inlet of the glue hose, and the second pressure sensor is arranged at the glue outlet of the glue hose.

[0021] Optionally, in the above-mentioned glue dispensing device, the detection end of the first pressure sensor is connected to the glue outlet of the glue dispensing pump, and the detection end of the second pressure sensor is connected to the glue dispensing gun head.

[0022] Optionally, in the above-mentioned glue dispensing device, the first pressure sensor is threadedly connected to the glue dispensing pump, and the second pressure sensor is threadedly connected to the glue dispensing gun head.

[0023] The glue discharging device provided by the utility model is provided with a first pressure sensor and a second pressure sensor at the glue inlet and glue outlet of the hose, respectively, for detecting the inlet pressure value and the outlet pressure value, respectively. When the number of foreign objects inside the hose increases, the inner wall of the hose becomes smaller, and the presence of foreign objects will increase the pressure value upstream of the foreign objects, and the presence of foreign objects will cause the flow rate of the glue outlet to decrease; at this time, the inlet pressure value will be greater than the outlet pressure value. The operator can judge whether the hose is blocked by the size of the inlet pressure value and the outlet pressure value. After judging that the blockage occurs, it is convenient for the operator to replace the hose or maintain the hose in time to solve the blockage problem. The utility model can monitor the internal state of the hose in real time, avoid the problems of insufficient glue and broken glue caused by the internal blockage of the hose, and improve the stability of the glue spreading process.

[0024] A glue spreading device, comprising:

[0025] Glue bucket, used to contain hot melt glue;

[0026] The glue discharging device is a glue discharging device as described in any of the above items, wherein the glue suction port of the glue discharging pump acts on the hot melt glue in the glue barrel.

[0027] Optionally, in the above-mentioned glue dispensing equipment, a heating platen and a piston cylinder device for driving the heating platen to move up and down along the glue barrel are arranged in the glue barrel;

[0028] The heating platen is used to heat and melt the hot melt adhesive in the adhesive barrel.

[0029] Optionally, in the above-mentioned glue spreading equipment, the outer ring of the heating platen is provided with a sealing ring which is sealed with the inner wall of the glue barrel.

[0030] The glue dispensing equipment provided by the utility model has the above-mentioned glue dispensing device, and therefore has all the technical effects of the above-mentioned glue dispensing device, which will not be described in detail herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0032] Figure 1 A schematic diagram of the structure of the glue spreading device provided by the embodiment of the utility model when in normal use;

[0033] Figure 2 This is a schematic diagram of the structure of the glue dispensing equipment provided in an embodiment of the utility model when it is blocked.

[0034] The markings in the figure are:

[0035] 101- glue barrel; 102- hot melt glue; 103- heating platen; 104- first pressure sensor; 105- rubber hose; 106- second pressure sensor; 107- glue gun head; 108- glue pump; 109- foreign matter. DETAILED DESCRIPTION

[0036] The core of the utility model is to provide a glue discharging device to judge whether the rubber hose is blocked, so as to avoid the problem of unstable glue discharging amount caused by the blockage of the rubber hose;

[0037] Another core of the utility model is to provide a glue dispensing device having the above-mentioned glue dispensing device.

[0038] The gluing of lamps is mainly to ensure the sealing of lamps. After the lamp parts are assembled, the gluing is mainly applied through the lamp glue groove to achieve the sealing of the inside and outside of the lamp, to prevent the lamp from getting water or fogging, which will affect the lighting effect, bring safety to night driving, and reduce the probability of potential safety hazards. Water or fog in the lamp will cause the projected light to be refracted at the position of the water droplets, greatly reducing the light projected to the front, causing the driver's vision to be blocked, and oncoming vehicles to be dazzled, affecting driving safety.

[0039] In the prior art, glue dispensing equipment used for gluing lamps generally includes a glue dispensing device (the glue dispensing device generally includes a glue dispensing gun head, a glue hose and a glue dispensing pump), a glue barrel and a pressure plate. If the glue hose is blocked by foreign matter, it will affect the glue dispensing amount of the glue dispensing device, resulting in insufficient glue, glue breakage, etc., which will eventually affect the sealing of the lamp. The glue hose can generally only be replaced and maintained regularly. If it is blocked during use, it will inevitably affect the sealing effect of the lamp.

[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] like Figure 1 and Figure 2 As shown, the embodiment of the utility model discloses a glue dispensing device, which can determine whether the rubber hose is blocked during use, thereby avoiding the problem of unstable glue dispensing caused by the blockage of the rubber hose. Specifically, the glue dispensing device disclosed in this embodiment includes a rubber hose 105, a glue dispensing pump 108, a glue gun head 107, a first pressure sensor 104 and a second pressure sensor 106.

[0042] The glue inlet of the rubber hose 105 is connected to the glue outlet of the glue pump 108, and the glue outlet of the rubber hose 105 is connected to the inlet of the glue gun head 107. The glue pump 108 can be a gear pump, which is a mechanical pump that uses the rotation of gears to generate fluid pressure and flow. It is usually composed of two or more gears, and the gaps between the gears are filled with fluid, which is squeezed out as the gears rotate. It should be noted that the type of glue pump 108 is not limited to a gear pump, as long as it can achieve the suction effect on the hot melt adhesive.

[0043] The glue suction port of the glue pump 108 acts on the hot melt glue 102 in the glue barrel 101, and is used to pump out the hot melt glue 102 in the glue barrel 101 under negative pressure, and pass through the glue hose 105, and finally discharged from the glue gun head 107 to the corresponding position of the lamp to complete the glue application work.

[0044] The first pressure sensor 104 is used to detect the inlet pressure value of the glue inlet of the hose 105; the second pressure sensor 106 is used to detect the outlet pressure value of the glue outlet of the hose 105. It should be noted that the first pressure sensor 104 and the second pressure sensor 106 can be the same pressure sensor, but need to have a certain high temperature resistance to avoid damage to the first pressure sensor 104 and the second pressure sensor 106 due to the high temperature of the hot melt adhesive.

[0045] If the hose 105 is not clogged, under theoretical conditions, the pressure values ​​detected by the first pressure sensor 104 and the second pressure sensor 106 should be equal, or nearly equal. Once the hose 105 is clogged, the pressure values ​​detected by the first pressure sensor 104 and the second pressure sensor 106 will change. A person skilled in the art can use this change to identify whether the hose 105 is clogged.

[0046] The glue discharging device disclosed in the embodiment of the utility model is provided with a first pressure sensor 104 and a second pressure sensor 106 at the glue inlet and glue outlet of the rubber hose 105, respectively, for detecting the inlet pressure value and the outlet pressure value, respectively. When the number of foreign objects 109 inside the rubber hose 105 increases, the inner wall of the rubber hose 105 becomes smaller, and the presence of the foreign objects 109 will increase the pressure value upstream of the foreign objects 109, and the presence of the foreign objects 109 will also cause the flow rate of the glue outlet to decrease; at this time, the inlet pressure value will be greater than the outlet pressure value. The operator can judge whether the rubber hose 105 is blocked by the size of the inlet pressure value and the outlet pressure value. After judging that the blockage occurs, it is convenient for the operator to replace the rubber hose 105 or maintain the rubber hose 105 in time to solve the blockage problem. The utility model can monitor the internal state of the rubber hose 105 in real time, avoid the situation of insufficient glue, broken glue, etc. caused by the internal blockage of the rubber hose 105, and improve the stability of the glue spreading process.

[0047] In order to facilitate the operator to view the inlet pressure value and the outlet pressure value detected by the first pressure sensor 104 and the second pressure sensor 106, in this embodiment, the glue discharge device may also include a display device, and the display device is used to display the inlet pressure value and the outlet pressure value. The display device can also be used to display the difference between the inlet pressure value and the outlet pressure value. The display device can also simultaneously display the inlet pressure value, the outlet pressure value and the difference between the two.

[0048] When the display device only displays the inlet pressure value and the outlet pressure value, the operator needs to judge whether the rubber hose 105 is blocked according to the inlet pressure value and the outlet pressure value. For example, the operator can calculate the difference between the inlet pressure value and the outlet pressure value by himself, and judge whether it is blocked according to the size of the difference, or judge whether it is blocked according to the relationship between the detected inlet pressure value and the inlet pressure value in the non-blocked state, which requires the operator to calculate and compare by himself.

[0049] When the display device only shows the difference between the inlet pressure value and the outlet pressure value, the operator can judge whether there is a blockage based on the size of the difference, for example, by comparing the displayed difference with the safety difference. If it is greater than the safety difference, it indicates that the hose 105 is blocked; if it is less than or equal to the safety difference, it indicates that the hose 105 is not blocked or the blockage is not serious.

[0050] In order to be able to promptly remind the operator to perform maintenance when the hose 105 is blocked, in this embodiment, the glue discharging device may also include an alarm device. When the difference between the inlet pressure value and the outlet pressure value exceeds the safety difference value, the alarm device alarms. The alarm device may include a sound alarm or an acousto-optic alarm. It should be noted that the utility model does not limit the specific type of the alarm device as long as it can remind the operator. The safety difference value can be set according to the actual situation. For example, it can be calibrated by the difference between the inlet pressure value and the outlet pressure value when blocked. During the implementation of the utility model, the safety difference value is set to 40bar, that is, when the difference between the inlet pressure value and the outlet pressure value exceeds 40bar, the alarm device alarms. It can be understood by those skilled in the art that the setting value of the safety difference value is not limited to 40bar, and those skilled in the art can set it according to the actual scenario.

[0051] The first pressure sensor 104 can be disposed at the rubber inlet of the rubber hose 105 , and the second pressure sensor 106 can be disposed at the rubber outlet of the rubber hose 105 . That is, in this embodiment, both the first pressure sensor 104 and the second pressure sensor 106 are disposed on the rubber hose 105 .

[0052] Since the hose 105 is made of soft material, the first pressure sensor 104 and the second pressure sensor 106 are not easy to connect with the hose 105, and it is not easy to ensure the sealing of the connection after connection. In addition, the hose 105 is a periodic maintenance part and needs to be replaced regularly. Therefore, when replacing the hose 105, the first pressure sensor 104 and the second pressure sensor 106 need to be disassembled and assembled, resulting in a long maintenance cycle of the hose 105. If the first pressure sensor 104 and the second pressure sensor 106 are discarded with the hose 105, the maintenance cost will be high.

[0053] Based on the above reasons, in this embodiment, the detection end of the first pressure sensor 104 can be connected to the glue outlet of the glue pump 108, and the detection end of the second pressure sensor 106 can be connected to the glue gun head 107. That is, the difference between this embodiment and the above embodiment is that the installation positions of the first pressure sensor 104 and the second pressure sensor 106 are changed, the first pressure sensor 104 is installed on the glue pump 108, and the second pressure sensor 106 is installed on the glue gun head 107.

[0054] Specifically, the first pressure sensor 104 can be threadedly connected to the glue pump 108, that is, the detection end of the first pressure sensor 104 has an external thread, and the corresponding position of the glue pump 108 is opened in the threaded hole, and the threaded hole needs to be connected with the glue outlet of the glue pump 108, so that after the first pressure sensor 104 is threadedly fitted on the threaded hole of the glue pump 108, the detection end of the first pressure sensor 104 can act on the glue outlet of the glue pump 108 to detect the pressure at the glue outlet of the glue pump 108, and the pressure at the glue outlet of the glue pump 108 is the same as the pressure at the glue inlet of the hose 105. Therefore, by installing the first pressure sensor 104 on the glue pump 108, the pressure at the glue inlet of the hose 105 can also be detected.

[0055] Similarly, the second pressure sensor 106 is threadedly connected to the glue gun head 107, that is, the detection end of the second pressure sensor 106 has an external thread, and the corresponding position of the glue gun head 107 is opened in a threaded hole, and the threaded hole needs to be connected to the cavity of the glue gun head 107, so that after the second pressure sensor 106 is threadedly fitted on the threaded hole of the glue gun head 107, the detection end of the second pressure sensor 106 can act on the cavity of the glue gun head 107 to detect the pressure in the cavity of the glue gun head 107, and the pressure in the cavity of the glue gun head 107 is the same as the pressure at the glue outlet of the hose 105. Therefore, the second pressure sensor 106 can be installed on the glue gun head 107 to detect the pressure at the glue outlet of the hose 105.

[0056] It should be noted that the connection between the first pressure sensor 104 and the glue pump 108 needs to be sealed, and a heat-resistant sealing ring should be selected for sealing to avoid sealing failure under the action of high-temperature hot melt adhesive. Correspondingly, the connection between the second pressure sensor 106 and the glue gun head 107 needs to be sealed. The sealing method can refer to the sealing method of the first pressure sensor 104, which will not be repeated here.

[0057] The embodiment of the utility model further discloses a glue dispensing device, which includes a glue barrel 101 and a glue dispensing device. The glue barrel 101 is used to contain hot melt glue 102, and the glue dispensing device is the glue dispensing device disclosed in the above embodiment, and the glue suction port of the glue dispensing pump 108 acts on the hot melt glue 102 in the glue barrel 101. The glue dispensing device disclosed in the embodiment of the utility model has all the technical effects of the above glue dispensing device, which will not be described in detail herein.

[0058] Furthermore, a heating platen 103 and a piston-cylinder device for driving the heating platen 103 to move up and down along the glue barrel 101 are provided in the glue barrel 101, and the heating platen 103 is used to heat and melt the hot melt adhesive 102 in the glue barrel 101. The glue pump 108 can be provided on the upper surface of the heating platen 103, and the heating platen 103 can output heat energy to heat the hot melt adhesive 102 in the glue barrel 101, so that the hot melt adhesive 102 remains in a molten state, and the fluidity of the hot melt adhesive 102 is improved, so that it can be pumped out through the glue pump 108 to complete the subsequent glue spreading work.

[0059] Furthermore, the outer ring of the heating platen 103 is provided with a sealing ring that seals with the inner wall of the glue barrel 101 to prevent the molten hot melt adhesive 102 from overflowing through the gap between the heating platen 103 and the glue barrel 101 when the heating platen 103 is pressed down. The sealing ring provided on the outer ring of the heating platen 103 should be selected with high heat resistance to avoid sealing failure caused by high temperature.

[0060] The assembly process of the lamp is as follows: after the lampshade and lamp shell are pre-assembled, they are placed in a pressing mold. The equipment performs flame treatment on the lamp shell and uses a gluing device to perform gluing. After the treatment, it is pressed through a pressing device. After the lamp is assembled, an overall test of the lamp is performed to ensure that the brightness, color and function of the lamp are normal.

[0061] To sum up, based on the original glue spreading equipment, the utility model breaks the original structure of the manufacturer, and adds pressure sensors at the glue inlet and outlet of the hose 105. It can monitor the pressure of the hot melt adhesive at both ends of the hose 105 in real time, and monitor whether the hose 105 is blocked by the pressure difference between the front end and the rear end. When the pressure difference is large, the hose 105 can be maintained in advance to achieve preventive maintenance and avoid quality problems of the lamps caused by internal blockage.

[0062] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0063] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The elements defined by the sentence "includes a..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

[0064] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0065] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A glue discharging device, characterized in that: include: Hose (105); A glue discharge pump (108), wherein the glue inlet of the glue hose (105) is connected to the glue outlet of the glue discharge pump (108); A glue gun head (107), wherein the glue outlet of the glue hose (105) is connected to the inlet of the glue gun head (107); A first pressure sensor (104) is used to detect an inlet pressure value at a rubber inlet of the rubber hose (105); The second pressure sensor (106) is used to detect the outlet pressure value at the rubber outlet of the rubber hose (105).

2. The glue discharging device according to claim 1, characterized in that: It also includes a display device, which is used to display the inlet pressure value and the outlet pressure value, and / or the display device is used to display the difference between the inlet pressure value and the outlet pressure value.

3. The glue discharging device according to claim 1, characterized in that: It also includes an alarm device, which sounds an alarm when the difference between the inlet pressure value and the outlet pressure value exceeds a safety difference.

4. The glue discharging device according to claim 3, characterized in that: The alarm device includes a sound alarm or an audible and visual alarm; and / or, The glue discharge pump (108) is a gear pump.

5. The glue discharging device according to claim 1, characterized in that: The first pressure sensor (104) is arranged at the glue inlet of the rubber hose (105), and the second pressure sensor (106) is arranged at the glue outlet of the rubber hose (105).

6. The glue discharging device according to claim 1, characterized in that: The detection end of the first pressure sensor (104) is connected to the glue outlet of the glue pump (108), and the detection end of the second pressure sensor (106) is connected to the glue gun head (107).

7. The glue discharging device according to claim 6, characterized in that: The first pressure sensor (104) is threadedly connected to the glue pump (108), and the second pressure sensor (106) is threadedly connected to the glue gun head (107).

8. A glue spreading device, characterized in that: include: A glue barrel (101) for containing hot melt glue (102); The glue dispensing device is the glue dispensing device as claimed in any one of claims 1 to 7, wherein the glue suction port of the glue dispensing pump (108) acts on the hot melt glue (102) in the glue barrel (101).

9. The adhesive spreading equipment according to claim 8, characterized in that: The rubber barrel (101) is provided with a heating platen (103) and a piston cylinder device for driving the heating platen (103) to move up and down along the rubber barrel (101); The heating platen (103) is used to heat and melt the hot melt adhesive (102) in the adhesive barrel (101).

10. The adhesive spreading equipment according to claim 9, characterized in that: The outer ring of the heating platen (103) is provided with a sealing ring which is sealed with the inner wall of the glue barrel (101).

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