Adjustable injection gun for foaming cold machine shell

Abstract

The utility model relates to foaming forming equipment technical field discloses a kind of adjustable injection gun for cold machine shell foaming, including injection gun body, the front side of injection gun body is equipped with quick connecting mechanism, the bottom of injection gun body is equipped with false-touch-prevention mechanism, the rear side of injection gun body is fixedly connected with feed pipe, the bottom of injection gun body is fixedly connected with handle, the quick connecting mechanism includes injection pipe, the inner wall of injection pipe is detachably connected with discharge pipe, the outer wall of discharge pipe is fixedly connected with two rubber rings, the outer wall of injection pipe is fixedly connected with fixed component.In the utility model, the injection head of adjustable injection gun for cold machine shell foaming is increased with quick release replacement function, can shorten replacement time, improve utilization, reduce operation difficulty, adapt to multi-specification injection demand, facilitate cleaning and maintenance, prolong equipment life, also can improve production flexibility to adapt to multi-batch multi-variety production.

Description

Technical Field

[0001] This utility model relates to the field of foam molding equipment technology, and in particular to an adjustable injection gun for foaming cold machine shells. Background Technology

[0002] The adjustable injection gun for cold machine casing foaming is a device used in the cold machine casing foaming process. It injects polyurethane and other foaming materials into the cavity between the cold machine casing and the inner liner to form an insulation layer. By adjusting the injection flow rate, pressure, or gun head position, it can adapt to the foaming needs of cold machine casings of different sizes, ensuring uniform distribution of the foaming material and improving foaming quality and production efficiency. The adjustable injection gun for foaming the cold machine shell includes an adjustable flow valve, a pressure-resistant cylinder, a mixing chamber, a replaceable nozzle, and a stroke adjustment knob. Its working principle is that the two-component raw materials are pumped into the cylinder by a high-pressure pump, the ratio is adjusted by the flow valve, and after being mixed by spiral stirring in the mixing chamber, the injection volume is controlled by adjusting the piston stroke by the knob, and then injected into the cavity of the cold machine shell for foaming and molding through the nozzle. Current foam dispensing guns often struggle to meet all requirements when dispensing foam under different working conditions using traditional dispensing heads. Therefore, when it is necessary to replace the dispensing head, traditional dispensing gun heads cannot be replaced, or the replacement process is complicated and wastes a lot of time, resulting in low processing efficiency. To address these issues, an adjustable dispensing gun for cold machine housing foaming is proposed. Utility Model Content

[0003] To overcome the above shortcomings, this utility model provides an adjustable injection gun for foaming the shell of a cold machine, which aims to improve the problem that traditional injection heads are difficult to handle when different injection requirements need to be met, and that replacement is difficult and time-consuming.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: An adjustable injection gun for foaming the casing of a cold machine includes an injection gun body, a quick-connect mechanism installed on the front side of the injection gun body, an anti-accidental contact mechanism installed on the bottom of the injection gun body, a feed pipe fixedly connected to the rear side of the injection gun body, and a handle fixedly connected to the bottom of the injection gun body. The quick connection mechanism includes an injection tube, an outlet tube detachably connected to the inner wall of the injection tube, two rubber rings fixedly connected to the outer wall of the outlet tube, and a fixing component fixedly connected to the outer wall of the injection tube. As a further description of the above technical solution: The fixing component includes a threaded ring, the inner wall of which is fixedly connected to the outer wall of the injection tube, an outer ring is threadedly connected to the outer wall of the threaded ring, a fixing ring is detachably connected to the inner wall of the outer ring, and multiple anti-slip teeth are fixedly connected to the rear side of the fixing ring. As a further description of the above technical solution: The anti-accidental activation mechanism includes a trigger, the top of which is rotatably connected to the bottom of the injection gun body. A fixing rod is fixedly connected to the inner wall of the trigger, and a connecting rod is rotatably connected to the outer wall of the fixing rod. A limit ring is fixedly connected to the outer wall of the connecting rod, and a spring is sleeved on the outer wall of the connecting rod. A limit assembly is fixedly connected to the other end of the connecting rod. As a further description of the above technical solution: The limiting component includes a plug rod, the outer wall of which is slidably connected to the inner wall of the handle, a limiting block is fixedly connected to the outer wall of the plug rod, a slot is provided on the surface of the connecting rod, a button is fixedly connected to the left side of the plug rod, and a spring is sleeved on the right outer wall of the plug rod. As a further description of the above technical solution: The outer wall of the discharge pipe is fixedly connected to the inner wall of the fixing ring, and an injection head is fixedly connected to the front side of the discharge pipe. The outer walls of the multiple anti-slip teeth are detachably connected to the outer wall of the injection pipe. As a further description of the above technical solution: One end of the spring is fixedly connected to the outer wall of the limiting ring, and the other end of the spring is fixedly connected to the outer wall of the insertion rod. As a further description of the above technical solution: One end of the second spring is fixedly connected to the outer wall of the limiting block, and the other end of the second spring is fixedly connected to the inner wall of the handle. As a further description of the above technical solution: The outer wall of the limiting block is slidably connected to the outer wall of the slot, and the outer wall of the insertion rod is slidably connected to the outer wall of the slot.

[0005] This utility model has the following beneficial effects: 1. In this utility model, when different types of injection heads need to be replaced to meet different injection needs, the injection head connected to the connecting mechanism can be easily removed by directly unscrewing the outer ring to release the fixing ring fixed to the outer ring and the threaded ring. At the same time, the injection head to be replaced is inserted into the injection gun, and the fixing ring is pushed to the designated position. The anti-slip teeth on the fixing ring can prevent the injection head from accidentally sliding during operation. Finally, the outer ring is screwed onto the threaded ring to fix the injection head. This reduces the scalability of traditional injection guns for different working conditions, improves work efficiency, and reduces injection costs.

[0006] 2. In this utility model, when using the injection gun for injection, pressing the button causes the limiting block to move out of the slot in the connecting rod, allowing the trigger to be pressed for injection. If the trigger is accidentally touched during non-injection operations, the trigger cannot be pressed because the button is not pressed, and the limiting block is stuck in the slot of the connecting rod. This prevents the injection material from being sprayed out and wasted after accidental triggering, and also avoids the extra cleaning work after accidental spraying. Thus, the overall work efficiency is improved and the cost of injection is reduced. Attached Figure Description

[0007] Figure 1 This is a three-dimensional schematic diagram of an adjustable injection gun for foaming a cold machine casing, as proposed in this utility model. Figure 2 This is a schematic diagram of the handle of an adjustable injection gun for foaming a cold machine casing, as proposed in this utility model. Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the spring of an adjustable injection gun for foaming the outer shell of a cold machine, as proposed in this utility model.

[0008] Legend: 1. Injection gun body; 2. Quick connection mechanism; 21. Injection tube; 22. Discharge tube; 23. Rubber ring; 24. Fixing component; 241. Threaded ring; 242. Outer ring; 243. Fixing ring; 244. Anti-slip teeth; 3. Injection head; 4. Handle; 5. Feed tube; 6. Anti-accidental contact mechanism; 61. Trigger; 62. Fixing rod; 63. Connecting rod; 64. Limiting ring; 65. Spring one; 66. Limiting component; 661. Insert rod; 662. Limiting block; 663. Slot; 664. Button; 665. Spring two. Detailed Implementation

[0009] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0010] Reference Figures 1 to 3An embodiment of this utility model is provided: an adjustable injection gun for foaming the shell of a cold machine, including an injection gun body 1, a quick connection mechanism 2 installed on the front side of the injection gun body 1, an anti-accidental contact mechanism 6 installed on the bottom of the injection gun body 1, a feed pipe 5 fixedly connected to the rear side of the injection gun body 1, and a handle 4 fixedly connected to the bottom of the injection gun body 1. The injection gun is driven to add material by pressing the handle 4. The quick-connect mechanism 2 includes an injection tube 21, an outlet tube 22 is detachably connected to the inner wall of the injection tube 21, and two rubber rings 23 are fixedly connected to the outer wall of the outlet tube 22 to prevent leakage of the injection material. A fixing component 24 is fixedly connected to the outer wall of the injection tube 21.

[0011] Reference Figures 1 to 3 The fixing component 24 includes a threaded ring 241, the inner wall of which is fixedly connected to the outer wall of the injection tube 21. The outer wall of the threaded ring 241 is threadedly connected to an outer ring 242. The inner wall of the outer ring 242 is detachably connected to a fixing ring 243. Multiple anti-slip teeth 244 are fixedly connected to the rear side of the fixing ring 243. The threaded ring 241 and the outer ring 242 are threadedly connected to each other to fix the fixing ring 243 to the feeding gun. At the same time, the anti-slip teeth 244 can prevent the injection head 3 from sliding.

[0012] Reference Figure 1 , Figure 2 and Figure 4 The anti-accidental triggering mechanism 6 includes a trigger 61. The top of the trigger 61 is rotatably connected to the bottom of the injection gun body 1. A fixing rod 62 is fixedly connected to the inner wall of the trigger 61. A connecting rod 63 is rotatably connected to the outer wall of the fixing rod 62. A limit ring 64 is fixedly connected to the outer wall of the connecting rod 63. A spring 65 is sleeved on the outer wall of the connecting rod 63. The compression and reset of the spring 65 can make the trigger 61 reset in time after being pressed. The other end of the connecting rod 63 is fixedly connected to a limit assembly 66. The limit assembly 66 includes an insert rod 661. The outer wall of the insert rod 661 is slidably connected to the inner wall of the handle 4. A limit block 662 is fixedly connected to the outer wall of the insert rod 661. The limit block 662 locks the connecting rod 63 to prevent the connecting rod 63 from moving, thereby preventing the trigger 61 from being pressed accidentally. The connecting rod 63 has a slot 663 on its surface, and the limiting block 662 is engaged in the slot 663. A button 664 is fixedly connected to the left side of the insertion rod 661. Pressing the button 664 moves the insertion rod 661. A spring 665 is sleeved on the outer right side of the insertion rod 661. The compression and reset of the spring 665 ensures that the button 664 is reset in time, so that the anti-accidental touch mechanism 6 can work normally automatically. The outer wall of the discharge pipe 22 is fixedly connected to the inner wall of the fixing ring 243. The fixing of the fixing ring 243 fixes the discharge pipe 22 and the injection head 3 connected to the discharge pipe 22 to the injection gun. The injection head 3 is fixedly connected to the front side of the discharge pipe 22. Multiple anti-slip teeth 244 The outer wall is detachably connected to the outer wall of the injection tube 21. The anti-slip teeth 244 are fitted into the injection tube 21 to prevent the discharge tube 22 from sliding. One end of the first spring 65 is fixedly connected to the outer wall of the limiting ring 64, and the other end of the first spring 65 is fixedly connected to the outer wall of the insert rod 661. One end of the second spring 665 is fixedly connected to the outer wall of the limiting block 662, and the other end of the second spring 665 is fixedly connected to the inner wall of the handle 4. The outer wall of the limiting block 662 is slidably connected to the outer wall of the slot 663, and the outer wall of the insert rod 661 is slidably connected to the outer wall of the slot 663. The insert rod 661 slides freely in the slot 663 so that when the trigger 61 is pressed, the connecting rod 63 can move normally in the handle 4.

[0013] Working principle: When the injection gun needs to use different types of injection heads 3 for different application scenarios, by removing the outer ring 242 threaded to the threaded ring 241, the fixing ring 243 fixed between the threaded ring 241 and the outer ring 242 can slide, which can drive the anti-slip teeth 244 to slide. At the same time, the discharge tube 22 on the inner wall of the fixing ring 243 can also slide out from the inner wall of the injection tube 21 due to the sliding of the fixing ring 243. The removal of the discharge tube 22 also takes out the injection head 3 connected to the discharge tube 22. At this time, the injection head 3 to be replaced and the one connected to the injection head 3 can be removed. Insert the discharge tube 22 into the injection tube 21, and at the same time move the fixing ring 243 fixed on the outer wall of the injection tube 21 to one side of the injection tube 21. Simultaneously, insert the anti-slip teeth 244 into the threaded ring 241 to prevent the discharge tube 22 from rotating after fixing. After inserting the discharge tube 22 into the designated position, rotate the outer ring 242 to fix the fixing ring 243 between the outer ring 242 and the threaded ring 241. This completes the quick replacement of the injection nozzle, which can quickly replace the injection nozzle when there are special injection needs in special positions, avoids wasting time on nozzle replacement, and improves work efficiency.

[0014] When the injection gun needs to inject material during operation, press button 664 and simultaneously push the connecting rod 661 to the right. This pushes the limiting block 662 fixed on the connecting rod 661 to the right, causing the limiting block 662 to slide out of the connecting rod 63. At this point, the trigger 61 can be pulled, causing the connecting rod 63 to move towards the inner wall of the handle 4. This also causes the limiting ring 64 to compress the first spring 65. If the trigger 61 is accidentally pressed, the button 664 will not be pressed, causing the connecting rod 661 to remain in a fixed position under the push of the second spring 665. The limiting block 662 will be stuck in the inner wall of the connecting rod 63, preventing the connecting rod 63 from moving backward and thus preventing the trigger 61 from being pulled. This prevents the injection gun from being opened unexpectedly, thus preventing waste. It also prevents additional losses caused by opening the injection gun in special circumstances and prevents cleaning costs caused by accidental spraying.

[0015] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable injection gun for foaming a cold machine casing, comprising an injection gun body (1), characterized in that: The front side of the injection gun body (1) is equipped with a quick connection mechanism (2), the bottom of the injection gun body (1) is equipped with an anti-accidental contact mechanism (6), the rear side of the injection gun body (1) is fixedly connected with a feed pipe (5), and the bottom of the injection gun body (1) is fixedly connected with a handle (4). The quick connection mechanism (2) includes an injection tube (21), the inner wall of which is detachably connected to an outlet tube (22), the outer wall of which is fixedly connected to two rubber rings (23), and the outer wall of the injection tube (21) is fixedly connected to a fixing component (24).

2. The adjustable injection gun for foaming a cold machine casing according to claim 1, characterized in that: The fixing component (24) includes a threaded ring (241), the inner wall of which is fixedly connected to the outer wall of the injection tube (21), the outer wall of which is threadedly connected to an outer ring (242), the inner wall of which is detachably connected to a fixing ring (243), and the rear side of the fixing ring (243) is fixedly connected to multiple anti-slip teeth (244).

3. The adjustable injection gun for foaming a cold machine casing according to claim 1, characterized in that: The anti-accidental touch mechanism (6) includes a trigger (61), the top of which is rotatably connected to the bottom of the injection gun body (1). A fixing rod (62) is fixedly connected to the inner wall of the trigger (61), and a connecting rod (63) is rotatably connected to the outer wall of the fixing rod (62). A limit ring (64) is fixedly connected to the outer wall of the connecting rod (63), and a spring (65) is sleeved on the outer wall of the connecting rod (63). A limit assembly (66) is fixedly connected to the other end of the connecting rod (63).

4. The adjustable injection gun for foaming a cold machine casing according to claim 3, characterized in that: The limiting component (66) includes a plug rod (661), the outer wall of which is slidably connected to the inner wall of the handle (4), a limiting block (662) is fixedly connected to the outer wall of the plug rod (661), a slot (663) is provided on the surface of the connecting rod (63), a button (664) is fixedly connected to the left side of the plug rod (661), and a spring (665) is sleeved on the right outer wall of the plug rod (661).

5. An adjustable injection gun for foaming a cold machine casing according to claim 2, characterized in that: The outer wall of the discharge pipe (22) is fixedly connected to the inner wall of the fixing ring (243), and the front side of the discharge pipe (22) is fixedly connected to the injection head (3). The outer walls of the multiple anti-slip teeth (244) are detachably connected to the outer wall of the injection pipe (21).

6. The adjustable injection gun for foaming a cold machine casing according to claim 4, characterized in that: One end of the spring (65) is fixedly connected to the outer wall of the limiting ring (64), and the other end of the spring (65) is fixedly connected to the outer wall of the insert rod (661).

7. The adjustable injection gun for foaming a cold machine casing according to claim 4, characterized in that: One end of the second spring (665) is fixedly connected to the outer wall of the limiting block (662), and the other end of the second spring (665) is fixedly connected to the inner wall of the handle (4).

8. The adjustable injection gun for foaming a cold machine casing according to claim 4, characterized in that: The outer wall of the limiting block (662) is slidably connected to the outer wall of the slot (663), and the outer wall of the insert rod (661) is slidably connected to the outer wall of the slot (663).

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