Bolt gluing equipment

Abstract

The utility model relates to the technical field of gearbox assembly, and particularly discloses a bolt gluing device which comprises a glue storage tank, a glue outlet control unit and a bolt gluing tool. The glue storage tank is communicated with an air inlet pipeline and a glue outlet pipeline, the other end of the air inlet pipeline is communicated with the glue outlet control unit, and the other end of the glue outlet pipeline is communicated with the bolt gluing tool; the glue outlet control unit comprises a pressing valve and a cushion valve which are connected in series, an air inlet of the pressing valve is communicated with an external air source, and an air outlet of the cushion valve is communicated with the air inlet pipeline; the pressing valve is used for controlling on-off of a gas path, and the buffer valve is used for controlling communication time of the gas path; the bolt gluing tool is provided with a plurality of limiting holes used for containing bolts, and the multiple limiting holes communicate with the glue outlet pipeline. By the adoption of the technical scheme, the technical problems that in the prior art, control over the gluing amount and the gluing uniformity degree is unstable, the consistency principle of the gluing technology is violated, and the assembly quality of a gearbox is affected can be solved.

Description

A bolt adhesive application device Technical Field

[0001] This utility model relates to the field of gearbox assembly technology, specifically to a bolt adhesive application device. Background Technology

[0002] During gearbox assembly, the bolts used for fastening require the application of anaerobic threadlocker adhesive to meet the tightening requirements. Due to the high viscosity and poor flowability of anaerobic threadlocker adhesive, manual application is time-consuming and labor-intensive. Furthermore, manual application is constrained by factors such as the operator's skill level and workload, leading to highly unstable process control: applying too much adhesive wastes glue and increases costs, while also contaminating the product; applying too little fails to meet relevant technical requirements, affecting gearbox assembly quality; and missed application poses a serious quality risk. In addition, manual application makes it difficult to ensure uniform adhesive application, which violates the consistency principle of the adhesive application process, increasing quality risks. Summary of the Invention

[0003] The present invention aims to provide a bolt gluing device to solve the technical problem that the existing technology has unstable control over the amount and uniformity of gluing, which violates the principle of consistency in the gluing process and affects the assembly quality of the gearbox.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A bolt gluing device includes a glue storage tank, a glue dispensing control unit, and a bolt gluing fixture. The glue storage tank is connected to an air inlet pipe and a glue dispensing pipe. The end of the air inlet pipe furthest from the glue storage tank is connected to the glue dispensing control unit, and the end of the glue dispensing pipe furthest from the glue storage tank is connected to the bolt gluing fixture. The glue dispensing control unit includes a pressing valve and a buffer valve. The air inlet of the pressing valve is connected to an external air source, and the air outlet of the pressing valve is connected to the air inlet of the buffer valve. The air outlet of the buffer valve is connected to the air inlet pipe. The pressing valve controls the on / off state of the air path, and the buffer valve controls the duration of the air path connection. The bolt gluing fixture has several limiting holes for placing and limiting the bolts, and all limiting holes are connected to the glue dispensing pipe.

[0006] Preferably, as an improvement, the bolt gluing fixture includes a mounting box with a top opening, a limiting plate is provided on the top of the mounting box, and a plurality of limiting holes are opened on the top of the limiting plate; a main channel communicating with the glue outlet pipe is opened in the limiting plate, and at least one glue outlet hole is opened in the limiting plate corresponding to the position of each limiting hole, one end of the glue outlet hole is communicating with the main channel, and the other end of the glue outlet hole is communicating with the limiting hole at the corresponding position.

[0007] Preferably, as an improvement, the number of limiting plates is several, and the limiting plates are detachably connected to the mounting box. The limiting plates are arranged side by side, and the main channels of two adjacent limiting plates are connected. One of the limiting plates located at the edge has a connecting plate detachably connected to its side wall. The connecting plate has a connecting hole corresponding to the position of the main channel, which is connected to the main channel. The connecting hole is used to connect the glue dispensing pipe.

[0008] Preferably, as an improvement, the limiting holes on the limiting plate are arranged in rows at equal intervals and are symmetrically distributed relative to the main channel; the farther the limiting hole is from the main channel, the more dispensing holes the limiting plate opens corresponding to the limiting hole and communicate with the limiting hole.

[0009] Preferably, as an improvement, the buffer valve includes a one-way valve and a two-position three-way reversing valve. The air inlet of the one-way valve is connected to the air outlet of the press valve, and the air outlet of the one-way valve is connected to the control chamber inside the reversing valve. The air inlet of the reversing valve is also connected to the air outlet of the press valve, and one of the air outlets of the reversing valve is connected to the air inlet pipe.

[0010] Preferably, as an improvement, the dispensing control unit further includes a protective box, which includes a box body and a box cover detachably connected to the top of the box body; both the pressing valve and the buffer valve are installed inside the box body, and the button of the pressing valve extends out of the box body through the box cover.

[0011] Preferably, as an improvement, the glue storage tank includes a tank body and a sealing cap detachably connected to the top of the tank body. A silicone sealing ring is provided at the part of the sealing cap that contacts the tank body. An air inlet connector and a glue outlet connector are provided at the top of the sealing cap. Both the air inlet connector and the glue outlet connector are connected to the tank body. The air inlet connector is used to connect to the air inlet pipe, and the glue outlet connector is used to connect to the glue outlet pipe.

[0012] Preferably, as an improvement, the top of the sealing cover is also provided with a pressure regulating valve and a pressure gauge, both of which are connected to the tank body.

[0013] Preferably, as an improvement, the top of the sealing cap is also provided with an exhaust valve, which is connected to the tank body.

[0014] Preferably, as an improvement, a safety valve is also provided on the top of the sealing cap, and the safety valve is connected to the tank body.

[0015] The principles and advantages of this scheme are:

[0016] 1. Automatic Adhesive Application: First, insert the bolt to be coated into the limiting hole, ensuring the threaded surface of the bolt is within the limiting hole. Then, press the button on the pressure valve to connect the air circuit, allowing compressed air from an external air source to flow into the pressure valve. The compressed air flowing out of the pressure valve splits into two streams: one stream flows through a one-way valve into the control chamber inside the reversing valve, and the other stream flows through the inlet and outlet of the reversing valve into the inlet pipe, and then through the inlet connector into the adhesive storage tank. Due to the inflow of compressed air, the air pressure in the sealed adhesive storage tank increases. Under pressure, the adhesive inside flows through the adhesive outlet connector into the adhesive outlet pipe, and then sequentially through the main channel and the adhesive outlet hole into the limiting hole. The threaded surface of the bolt is coated with adhesive, achieving automatic adhesive application.

[0017] 2. Precise Control of Adhesive Application: Compressed air flowing through the one-way valve into the control chamber of the reversing valve gradually increases the air pressure in the control chamber. When the pressure difference between the control chamber and the spring reaches a preset value, the reversing valve switches direction, and the gas flowing through the reversing valve exits from another outlet instead of entering the adhesive storage tank through the inlet pipe. The air pressure in the adhesive storage tank decreases instantaneously, stopping the delivery of adhesive to the bolt application fixture through the adhesive outlet pipe. This achieves precise control of the adhesive dispensing time, thereby ensuring precise control of the amount of adhesive applied to the bolts and conforming to the principle of consistency in the adhesive application process.

[0018] 3. Improve Adhesive Coating Uniformity: Due to the varying distances between the limiting holes on the limiting plate and the main channel, the amount of adhesive flowing into each limiting hole per unit time varies under the influence of factors such as adhesive flow rate and time, affecting the uniformity of adhesive coating on the bolts in each limiting hole. This solution arranges several limiting holes on the limiting plate in rows with equal spacing and symmetrical distribution relative to the main channel; the farther the limiting hole is from the main channel, the more adhesive outlet holes are opened on the limiting plate corresponding to that limiting hole and connected to it. In this way, the influence of factors such as water flow rate and time can be offset, making the amount of water flowing into each limiting hole basically the same per unit time, improving the uniformity of adhesive coating on the bolts inserted in each limiting hole, and adhering to the consistency principle of the adhesive coating process.

[0019] 4. Adjustable Adhesive Dispensing: By adjusting the opening of the one-way valve using its knob, the amount of compressed air flowing into the control chamber of the directional control valve per unit time can be adjusted. This, in turn, adjusts the time it takes for the air pressure and spring pressure in the control chamber to reach a preset value, thus adjusting the delay time of the directional control valve and consequently, the adhesive dispensing time, and consequently, the amount of adhesive applied to the bolt. This allows for adaptation to the adhesive application requirements of different bolts, broadening its applicability.

[0020] 5. Adjustable limit plates: Since there are several limit plates and the limit plates are detachably connected to the mounting box, limit plates with corresponding size limit holes can be installed according to the actual use, i.e., according to the size and number of bolts to be glued, in order to adapt to more working conditions and improve the scope of application.

[0021] 6. Improve production efficiency: The structural design of the bolt gluing fixture in this solution allows for the simultaneous application of adhesive to multiple bolts, thereby reducing the frequency of bolt insertion and placement by workers, reducing their labor intensity, and improving production efficiency. Attached Figure Description

[0022] Figure 1 is a schematic diagram of the overall structure of an embodiment of this utility model.

[0023] Figure 2 is a schematic diagram of the internal structure of the glue dispensing control unit in Figure 1.

[0024] Figure 3 is a schematic diagram of the glue storage tank in Figure 1.

[0025] Figure 4 is a schematic diagram of the bolt gluing fixture in Figure 1.

[0026] Figure 5 is a schematic diagram of the limiting plate in Figure 4.

[0027] Figure 6 is a front view of Figure 5. Detailed Implementation

[0028] The following detailed description illustrates the specific implementation method:

[0029] The reference numerals in the accompanying drawings include: bolt gluing fixture 1, mounting box 11, limiting plate 12, limiting hole 13, main channel 14, branch channel 15, glue outlet 16, connecting plate 17, glue outlet control unit 2, pressing valve 21, buffer valve 22, protective box 23, glue storage tank 3, tank body 31, sealing cover 32, air inlet connector 33, glue outlet connector 34, pressure regulating valve 35, pressure gauge 36, exhaust valve 37, air inlet pipe 4, glue outlet pipe 5.

[0030] The embodiments are basically shown in Figures 1 to 6:

[0031] A bolt gluing device, as shown in Figure 1, includes a glue dispensing control unit 2, a glue storage tank 3, and a bolt gluing fixture 1.

[0032] The dispensing control unit 2 includes a protective housing 23, which comprises a housing with a top opening and a cover detachably connected to the top of the housing. As shown in Figure 2, the dispensing control unit 2 also includes a pressing valve 21 and a buffer valve 22 installed within the protective housing 23. The pressing valve 21 utilizes existing technology, and its button extends through the cover from within the housing to facilitate pressing the button and switching the valve 21 on and off. The air inlet of the pressing valve 21 is connected to an external air source via a pipe, and the air outlet of the pressing valve 21 is connected to the air inlet of the buffer valve 22 via a pipe. The air outlet of the buffer valve 22 is connected to an air inlet pipe 4. The external air source provides compressed air; the pressing valve 21 controls the on / off state of the air path, and the buffer valve 22 controls the duration of the air path connection.

[0033] In this embodiment, the valve body of the press valve 21 is an MOV manual mechanical valve. If the air supply is interrupted and pressure is not maintained, air will leak. Pressing the button connects the air supply, and releasing the button disconnects it. Its advantage is that it is easy to control manually and allows for maintenance in the event of an air supply interruption or pressure loss.

[0034] The buffer valve 22 includes a one-way valve and a two-position three-way directional valve, both of which utilize existing technology. The inlet of the one-way valve is connected to the outlet of the press valve 21 via a pipe, and the outlet of the one-way valve is connected to the control chamber inside the directional valve via a pipe. The inlet of the directional valve is also connected to the outlet of the press valve 21 via a pipe. One outlet of the directional valve is connected to an inlet pipe 4, and the other outlet is connected to a compressed air recovery device via a pipe. By adjusting the opening of the one-way valve via its knob, the pressure difference between the air pressure in the control chamber inside the directional valve and the spring is changed, thereby altering the delay time of the directional valve and, consequently, the time required for the directional valve to reverse the airflow.

[0035] In this embodiment, the glue storage tank 3 is installed inside the protective box 23, and the upper part of the glue storage tank 3 extends out of the box through the box cover. Referring to Figure 3, the glue storage tank 3 includes a tank body 31 with a top opening and a sealing cap 32 detachably connected to the top of the tank body 31. A silicone sealing ring (not shown in the figure) is fixedly connected to the part of the sealing cap 32 that contacts the tank body 31. An air inlet connector 33 and a glue outlet connector 34 are fixedly connected to the top of the sealing cap 32. The bottoms of both the air inlet connector 33 and the glue outlet connector 34 penetrate the sealing cap 32 and communicate with the tank body 31. The top of the air inlet connector 33 communicates with an air inlet pipe 4, and the top of the glue outlet connector 34 communicates with a glue outlet pipe 5.

[0036] In this embodiment, a pressure regulating valve 35, a pressure gauge 36, an exhaust valve 37, and a safety valve are also fixedly connected to the top of the sealing cover 32. The bottoms of the pressure regulating valve 35, the pressure gauge 36, the exhaust valve 37, and the safety valve all penetrate the sealing cover 32 and communicate with the tank body 31.

[0037] Referring to Figures 4, 5, and 6, the bolt adhesive applicator 1 is provided with several limiting holes 13. These limiting holes 13 are used to place and limit the bolts, and all of them are connected to the adhesive dispensing pipe 5. Specifically, the bolt adhesive applicator 1 includes a mounting box 11 with an open top. Several limiting plates 12 are detachably connected to the top of the mounting box 11 via bolts. The horizontal projection of each limiting plate 12 is rectangular, and the limiting plates 12 are arranged side-by-side with their long sides touching. Several limiting holes 13 are opened on the top of each limiting plate 12, and these holes 13 are arranged in rows at equal intervals along the long side of the limiting plate 12.

[0038] A main channel 14 is formed within the limiting plate 12 along its short side. Using the perspective of Figure 4 as a reference, the main channel 14 of the leftmost limiting plate 12 penetrates its right side wall, while the main channels 14 of the remaining limiting plates 12 penetrate their left and right side walls. After several limiting plates 12 are fixed side-by-side, the main channels 14 of adjacent limiting plates 12 are connected. A branch channel 15 is formed along the long side of the right side wall of the limiting plate 12 (using the perspective of Figure 4 as a reference), and the branch channel 15 is connected to the main channel 14. At least one glue outlet 16 is formed within the limiting plate 12 corresponding to each limiting hole 13. One end of the glue outlet 16 is connected to the branch channel 15, and the other end of the glue outlet 16 is connected to the corresponding limiting hole 13.

[0039] The limiting holes 13 on each limiting plate 12 are symmetrically distributed relative to the main channel 14. The farther the limiting hole 13 is from the main channel 14, the more adhesive outlet holes 16 are opened on the limiting plate 12 corresponding to the limiting hole 13 and communicating with the limiting hole 13. In this embodiment, each limiting plate 12 has four limiting holes 13. The two limiting holes 13 closer to the main channel 14 have two adhesive outlet holes 16 at their corresponding positions; the two limiting holes 13 farther from the main channel 14 have three adhesive outlet holes 16 at their corresponding positions. In this way, the consistency of the amount of adhesive in each limiting hole 13 within the same time can be improved, thereby improving the consistency of the amount of adhesive applied to the bolts in the limiting holes 13.

[0040] The limiting plate 12 located on the far right (based on the view in Figure 4) has a connecting plate 17 detachably connected to its right side wall by bolts. The connecting plate 17 has a connecting hole corresponding to the main channel 14, which is connected to the main channel 14 and is connected to the glue outlet pipe 5.

[0041] The specific implementation process is as follows:

[0042] (1) Install bolt glue application fixture 1: According to the size and quantity of the bolts to be glued, select the corresponding number of limiting plates 12 with corresponding size limiting holes 13, and fix them to the top of the mounting box 11 as shown in Figure 4. Fix a connecting plate 17 connected to the glue outlet pipe 5 on the right side wall of the rightmost limiting plate 12. At this time, the outlet channels of the two adjacent limiting plates 12 are connected, and the main channel 14 of the rightmost limiting plate 12 is connected to the glue outlet pipe 5 through the connecting hole on the connecting plate 17.

[0043] (2) Place the bolt: Insert the bolt into the limiting hole 13 at the top of the limiting plate 12, so that the threaded surface of the bolt is located in the limiting hole 13, and there is a gap between the threaded surface of the bolt and the inner wall of the limiting hole 13.

[0044] (3) Connect the air path: Press the button of the press valve 21 to connect the air path. The compressed air from the external air source first flows into the press valve 21. The compressed air flowing out of the press valve 21 is divided into two branches. One branch flows into the control chamber inside the reversing valve through the one-way valve, and the other branch flows into the air inlet pipe 4 through the air inlet and air outlet of the reversing valve, and then flows into the glue storage tank 3 through the air inlet connector 33.

[0045] (4) Pressurized dispensing: Since the glue storage tank 3 is in a sealed state, the inflow of compressed air causes the air pressure inside the glue storage tank 3 to increase. Under the action of pressure, the glue stored inside the glue storage tank 3 flows into the dispensing pipe 5 through the dispensing connector 34, and then flows into the main channel 14 of the bolt gluing fixture 1 through the dispensing pipe 5. The glue in the main channel 14 flows into each limiting hole 13 through the branch channel 15 and the dispensing hole 16, so that the thread surface of the bolt inserted in the limiting hole 13 is covered with water, thus achieving the gluing of the bolt.

[0046] (5) Delayed Reversal: Compressed air flowing into the control chamber of the reversing valve causes the air pressure in the control chamber to continuously increase. When the pressure difference between the control chamber and the spring reaches a preset value, the reversing valve reverses, and the gas flowing through the reversing valve flows out from another outlet instead of entering the glue storage tank 3 through the intake pipe 4. The air pressure in the glue storage tank 3 decreases instantaneously, stopping the delivery of glue to the bolt glue application fixture 1 through the glue outlet pipe 5, thus achieving precise control of the glue dispensing time and the amount of glue applied to the bolts, thereby ensuring the assembly quality of the gearbox.

[0047] (6) Delay time adjustment: Adjust the opening of the one-way valve by turning the knob of the one-way valve to adjust the amount of compressed air flowing into the control chamber of the reversing valve per unit time, thereby adjusting the time when the air pressure in the control chamber and the pressure difference of the spring reach the preset value, realizing the adjustment of the delay time of the reversing valve, and thus realizing the adjustment of the glue dispensing time, that is, realizing the adjustment of the amount of glue applied to the bolt.

[0048] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A bolt adhesive application device, characterized in that: The device includes an adhesive storage tank, an adhesive dispensing control unit, and a bolt adhesive application fixture. The adhesive storage tank is connected to an air inlet pipe and an adhesive dispensing pipe. The end of the air inlet pipe furthest from the adhesive storage tank is connected to the adhesive dispensing control unit, and the end of the adhesive dispensing pipe furthest from the adhesive storage tank is connected to the bolt adhesive application fixture. The adhesive dispensing control unit includes a pressing valve and a buffer valve. The air inlet of the pressing valve is connected to an external air source, and the air outlet of the pressing valve is connected to the air inlet of the buffer valve. The air outlet of the buffer valve is connected to the air inlet pipe. The pressing valve controls the on / off state of the air path, and the buffer valve controls the duration of the air path connection. The bolt adhesive application fixture has several limiting holes for placing and limiting the bolts; all limiting holes are connected to the adhesive dispensing pipe.

2. The bolt adhesive application equipment according to claim 1, characterized in that: The bolt gluing fixture includes a mounting box with an open top. A limiting plate is provided on the top of the mounting box, and several limiting holes are opened on the top of the limiting plate. A main channel communicating with the glue outlet is opened inside the limiting plate. At least one glue outlet is opened inside the limiting plate corresponding to the position of each limiting hole. One end of the glue outlet is connected to the main channel, and the other end of the glue outlet is connected to the limiting hole at the corresponding position.

3. The bolt gluing apparatus according to claim 2, wherein: The number of limiting plates is several, and each limiting plate is detachably connected to the mounting box. The limiting plates are arranged side by side, and the main channels of two adjacent limiting plates are connected. One of the limiting plates located at the edge has a connecting plate detachably connected to its side wall. The connecting plate has a connecting hole corresponding to the main channel and communicating with the main channel. The connecting hole is used to connect the glue dispensing pipe.

4. The bolt gluing apparatus according to claim 3, wherein: The limiting plate has several limiting holes arranged in rows at equal intervals and symmetrically distributed relative to the main channel; the farther the limiting hole is from the main channel, the more dispensing holes the limiting plate opens corresponding to the limiting hole and communicate with the limiting hole.

5. The bolt adhesive application equipment according to claim 1, characterized in that: The buffer valve includes a one-way valve and a two-position three-way reversing valve. The air inlet of the one-way valve is connected to the air outlet of the press valve, and the air outlet of the one-way valve is connected to the control chamber inside the reversing valve. The air inlet of the reversing valve is also connected to the air outlet of the press valve, and one of the air outlets of the reversing valve is connected to the air inlet pipe.

6. The bolt adhesive application equipment according to claim 5, characterized in that: The dispensing control unit also includes a protective box, which includes a box body and a box cover detachably connected to the top of the box body; both the pressing valve and the buffer valve are installed inside the box body, and the button of the pressing valve extends out of the box body through the box cover.

7. The bolt gluing apparatus according to claim 1, wherein: The glue storage tank includes a tank body and a sealing cap detachably connected to the top of the tank body. A silicone sealing ring is provided at the part of the sealing cap that contacts the tank body. An air inlet connector and a glue outlet connector are provided on the top of the sealing cap. Both the air inlet connector and the glue outlet connector are connected to the tank body. The air inlet connector is used to connect to the air inlet pipe, and the glue outlet connector is used to connect to the glue outlet pipe.

8. The bolt adhesive application equipment according to claim 7, characterized in that: The top of the sealing cover is also equipped with a pressure regulating valve and a pressure gauge, both of which are connected to the tank body.

9. The bolt gluing apparatus according to claim 8, wherein: The top of the sealing cap is also equipped with an exhaust valve, which is connected to the tank body.

10. A bolt adhesive application device according to claim 9, characterized in that: A safety valve is also provided on the top of the sealing cap, and the safety valve is connected to the tank body.

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