A feeding gun with less material accumulation

Abstract

This invention discloses a feeding gun with minimal material accumulation. The feeding gun head is screwed to one end of the feeding gun tube, and the other end of the feeding gun tube is screwed to one end of the feeding connection tee. The other end of the feeding connection tee is connected to one end of the tee connector, and the other end of the tee connector is connected to a cylinder. The push rod inside the cylinder is a hollow tube with a push rod head at its front end. The feeding gun tube includes an outer tube and an inner tube, which are sleeved together. The inner tube has a balance hole. The single-sided gap between the push rod and the inner wall of the inner tube is less than 1 mm, the single-sided gap between the push rod head and the inner wall of the feeding gun head is less than 1 mm, and the single-sided gap between the push rod head and the inner wall of the inner tube is less than 1 mm. This invention provides a technical solution that reduces the weight of the push rod by using a hollow tube as the push rod and controls the gaps between the push rod and the inner tube, the push rod head and the material gun head, and the push rod head and the inner tube. This reduces the accumulation of material on the inner wall of the material gun head and the material gun tube while increasing the pushing efficiency of the push rod. It solves the problem that in existing feeding guns, insufficient heating leads to incompletely expanded material sticking to the side wall of the push rod and retracting into the material gun head and the material gun tube as the push rod retracts. The material accumulated in the material gun head and the material gun tube hardens, affecting the smooth operation of the existing push rod (solid and slender) and causing the push rod to deform.

Description

Technical Field

[0001] This invention relates to a foam mold feeding accessory, and more particularly to a feeding gun with minimal material accumulation. Background Technology

[0002] In the foam molding production process, foam particles need to be added into the mold through a feeding gun. The existing feeding gun injects the foam particle raw material into the high-temperature mold through the gun head. If the feeding is too fast or too much, particle accumulation is likely to occur. As a result, some particles are not fully heated during the molding stage, resulting in insufficient expansion. During this process, the material that is not fully heated and therefore not fully expanded will stick to the side wall of the push rod and will retract into the feeding gun head and tube as the push rod retracts. After the material accumulated in the feeding gun head and tube hardens, it will affect the smooth operation of the existing push rod (solid and slender) and cause the push rod to deform. Summary of the Invention

[0003] This invention discloses a feeding gun with minimal material accumulation. The feeding gun head is screwed to one end of the feeding gun tube, and the other end of the feeding gun tube is screwed to one end of the feeding connection tee. The other end of the feeding connection tee is connected to one end of the tee connector, and the other end of the tee connector is connected to a cylinder. The push rod inside the cylinder is a hollow tube with a push rod head at its front end. The feeding gun tube includes an outer tube and an inner tube, which are sleeved together. The inner tube has a balance hole. The single-sided gap between the push rod and the inner wall of the inner tube is less than 1 mm, the single-sided gap between the push rod head and the inner wall of the feeding gun head is less than 1 mm, and the single-sided gap between the push rod head and the inner wall of the inner tube is less than 1 mm. This invention provides a technical solution that reduces the weight of the push rod by using a hollow tube as the push rod and controls the gaps between the push rod and the inner tube, the push rod head and the material gun head, and the push rod head and the inner tube. This reduces the accumulation of material on the inner wall of the material gun head and the material gun tube while increasing the pushing efficiency of the push rod. It solves the problem that in existing feeding guns, insufficient heating leads to incompletely expanded material sticking to the side wall of the push rod and retracting into the material gun head and the material gun tube as the push rod retracts. The material accumulated in the material gun head and the material gun tube hardens, affecting the smooth operation of the existing push rod (solid and slender) and causing the push rod to deform.

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

[0005] A feeding gun with minimal material accumulation includes: a feeding gun head, a feeding gun tube, a feeding connection tee, a tee connector, a cylinder, a push rod, and a push rod head. The feeding gun head is screwed to one end of the feeding gun tube, and the other end of the feeding gun tube is screwed to one end of the feeding connection tee. The other end of the feeding connection tee is connected to one end of the tee connector, and the other end of the tee connector is connected to the cylinder. The push rod inside the cylinder is a hollow tube with a push rod head at its front end. The feeding gun tube includes an outer tube and an inner tube, which are sleeved together. The inner tube has a balance hole. The single-sided gap between the push rod and the inner wall of the inner tube is less than 1 mm, the single-sided gap between the push rod head and the inner wall of the feeding gun head is less than 1 mm, and the single-sided gap between the push rod head and the inner wall of the inner tube is less than 1 mm.

[0006] Further, a steam slit is provided at the front end of the material gun head, which can introduce the high-temperature gas from the mold into the inner diameter space of the material gun head. The material gun head is equipped with a pressure relief hole.

[0007] Further details include a feed channel in the feed connection tee, and the tee connector is equipped with a retraction pressurization channel, a V-shaped sealing ring, and a first anti-vibration pad. The V-shaped sealing ring is used for sealing between the tee connector and the push rod, and the first anti-vibration pad is placed between the tee connector and the push rod.

[0008] Further configuration includes a push rod and a piston sleeve connection, an inner piston seal ring between the push rod and the piston, a nut connection between the push rod and the piston, a gasket between the nut and the piston, and an inner tube piston guide ring fitted around the outer ring of the piston.

[0009] Further configuration: one end of the cylinder body is screwed to the other end of the tee connector, the other end of the cylinder body is connected to the cylinder head, a cylinder head ring is provided between the cylinder head and the cylinder body, a cylinder gasket is provided on the inner end face of the cylinder head, and a forward pressurization channel is provided inside the cylinder head.

[0010] Further configuration: the end of the push rod not connected to the piston is connected to the push rod head, the push rod head has a pressure relief hole, the push rod head is fitted with a Glyd ring, and an air plug is embedded in the end face of the push rod head, with an air plug vent hole inside the air plug.

[0011] Further, the air passages of the air plug vent, the push rod head pressure relief hole, and the material gun head pressure relief hole are connected.

[0012] Further configuration: the space between the cylinder, push rod, and piston, which are connected by the reversing pressurization channel, is called the reversing air chamber. When pressurization is applied to the reversing air chamber through the reversing pressurization channel, the push rod moves toward the cylinder.

[0013] Further configuration: the space between the cylinder, push rod, and piston connected by the forward pressurization channel is the forward air chamber. When pressurization is applied to the forward air chamber through the forward pressurization channel, the push rod moves toward the material gun head.

[0014] Further, the material gun barrel is connected to the machine base via a fixed frame.

[0015] This invention provides a technical solution that reduces the weight of the push rod by using a hollow tube as the push rod and controls the gaps between the push rod and the inner tube, the push rod head and the material gun head, and the push rod head and the inner tube. This reduces the accumulation of material on the inner wall of the material gun head and the material gun tube while increasing the pushing efficiency of the push rod. It solves the problem that in existing feeding guns, insufficient heating leads to incompletely expanded material sticking to the side wall of the push rod and retracting into the material gun head and the material gun tube as the push rod retracts. The material accumulated in the material gun head and the material gun tube hardens, affecting the smooth operation of the existing push rod (solid and slender) and causing the push rod to deform. Attached Figure Description

[0016] Figure 1 The three-dimensional representation of the present invention Figure 1 ;

[0017] Figure 2 This is a cross-sectional view of the present invention;

[0018] Figure 3 This is an exploded view of the parts of the present invention;

[0019] Figure 4 This is a cross-sectional view of the feed gun head of the present invention;

[0020] Figure 5 This is a cross-sectional view of the feed gun barrel of the present invention;

[0021] Figure 6 This is a cross-sectional view of the feed connection tee of the present invention;

[0022] Figure 7 This is a cross-sectional view of the tee connector of the present invention;

[0023] Figure 8 This is a cross-sectional view of the cylinder of the present invention;

[0024] Figure 9 This is a cross-sectional view of the push rod head of the present invention;

[0025] Figure 10 This is a cross-sectional view of the push rod of the present invention;

[0026] In the diagram: 1. Material gun head; 11. Material gun head pressure relief hole; 12. Steam slit; 13. Material gun pipe; 14. Outer pipe; 15. Inner pipe; 16. Balance hole; 2. Feed connection tee; 21. Feed channel.

[0027] 3. T-joint; 31. Reverse pressurization channel; 32. V-shaped sealing ring; 33. First shockproof pad.

[0028] Cylinder 4, Cylinder block 41, Cylinder head 42, Cylinder head ring 43, Cylinder head gasket 44, Forward pressurization passage 45

[0029] Push rod 5, piston 51, inner piston seal ring 52, gasket 53, nut 54, inner tube piston guide ring 55, push rod head 6, push rod head pressure relief hole 61, Glyd ring 62, air plug 7, air plug vent hole 71, fixing bracket 8, forward air chamber, rearward air chamber. Detailed Implementation

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0033] like Figures 1 to 10 As shown, the present invention provides a feeding gun with less material accumulation, including: a feeding gun head 1, a feeding gun tube 13, a feeding connection tee 2, a tee connector 3, a cylinder 4, a push rod 5, and a push rod head 6.

[0034] The material gun head 1 is fixed to one end of the material gun tube 13 by a threaded connection, and the other end of the material gun tube 13 is fixedly connected to one end of the feed connection tee 2 by a thread. The other end of the feed connection tee 2 is connected to one end of the tee connector 3, and the other end of the tee connector 3 is connected to the cylinder 4.

[0035] A push rod 5 is installed inside the cylinder 4. The push rod 5 is a hollow tube structure. The hollow tube reduces the weight of the push rod and increases the pushing efficiency of the push rod.

[0036] A pusher head 6 is installed at the front end of the pusher 5. The material gun tube 13 includes an outer tube 14 and an inner tube 15, which are sleeved together. The side wall of the inner tube 15 is provided with several balance holes 16. The balance holes 16 are used to improve airflow stability and avoid uneven material expansion caused by airflow turbulence.

[0037] By setting the balance hole 16, the puffing effect is further improved while maintaining the stability of material conveying and reducing material accumulation.

[0038] The single-sided gap between push rod 5 and the inner wall of inner tube 15 is less than 1mm, the single-sided gap between push rod head 6 and the inner wall of material gun head 1 is less than 1mm, and the single-sided gap between push rod head 6 and the inner wall of inner tube 15 is less than 1mm.

[0039] Precise control of critical gaps effectively prevents material accumulation at these locations, while ensuring smooth operation of push rod 5 and preventing equipment malfunctions caused by material hardening.

[0040] Preferably, the front end of the material gun head 1 is provided with a steam slit 12. The steam slit 12 is used to introduce high-temperature gas from the mold into the inner diameter space of the material gun head 1, thereby improving the expansion effect of the foam particles. The material gun head 1 is also provided with a material gun head pressure relief hole 11 to balance the internal pressure and prevent airflow blockage that could lead to material accumulation.

[0041] The steam slit 12 can improve the uniformity of material heating and effectively improve the puffing effect; the pressure relief hole 11 of the material gun head further reduces the problem of air pressure fluctuation caused by the accumulation of materials.

[0042] Preferably, the feed connection tee 2 has a feed channel 21, and the tee connector 3 includes a retraction pressurization channel 31, a V-shaped sealing ring 32, and a first anti-vibration pad 33. The V-shaped sealing ring 32 is used to ensure the sealing effect between the tee connector 3 and the push rod 5, and the first anti-vibration pad 33 can effectively reduce vibration and noise during equipment operation.

[0043] The V-shaped sealing ring 32 improves the sealing performance of the equipment and avoids poor expansion effect caused by gas leakage; the first anti-vibration pad 33 extends the service life of the equipment and improves the stability of operation.

[0044] Preferably, the push rod 5 is connected to the piston 51 via a nut 54, and a gasket 53 is provided between the nut 54 and the piston 51 to enhance the stability and airtightness of the connection. The outer ring of the piston 51 is fitted with an inner tube piston guide ring 55 to provide more stable motion guidance.

[0045] The use of guide ring 55 optimizes the stability of push rod 5 during operation, significantly reduces the risk of push rod deviation, and improves the reliability of the equipment.

[0046] Preferably, one end of the cylinder body 41 of the cylinder 4 is connected to a three-way connector 3 via a threaded connection, and the other end is fixedly connected to the cylinder head 42. A cylinder head ring 43 is provided between the cylinder head 42 and the cylinder body 41 to seal the gas inside the cylinder 4. A cylinder gasket 44 is provided on the inner end face of the cylinder head 42, and a forward pressurization channel 45 is provided to pressurize the forward air chamber.

[0047] The sealed design ensures the air pressure balance inside cylinder 4, and the forward pressurization channel 45 further improves the propulsion efficiency of push rod 5.

[0048] Preferably, the push rod head 6 has a push rod head pressure relief hole 61 inside, the push rod head 6 is sleeved with the Gladley ring 62, and an air plug 7 is embedded in the end face of the push rod head 6. The air plug 7 has an air plug vent hole 71 inside to ensure system air pressure balance.

[0049] The interconnected design of the push rod head pressure relief hole 61 and the air plug vent hole 71 significantly improves the pressure relief performance and prevents operational obstacles caused by gas volume pressure.

[0050] Preferably, a retractable air chamber is formed through the space between the retractable pressurization channel 31, the cylinder 41, the push rod 5, and the piston 51. When the retractable pressurization channel 31 pressurizes, the push rod 5 moves toward the cylinder 41; when the forward pressurization channel 45 pressurizes, the push rod 5 moves toward the material gun head 1.

[0051] The dual-channel pressurization design improves the operational flexibility of push rod 5, ensuring smooth and unobstructed operation in both forward and reverse directions.

[0052] Preferably, the material gun barrel 13 is connected to the machine base through the fixing frame 8. The fixing frame 8 is adjustable, which can adjust the working angle and height of the material gun to meet the needs of different production scenarios.

[0053] The adjustable function of the mounting bracket 8 enhances the applicability of the equipment and provides greater flexibility for diversified production.

[0054] This invention reduces the weight of the push rod 5 by using a hollow tube and controls the gaps between the push rod 5 and the inner tube 15, the push rod head 6 and the material gun head 1, and the push rod head 1 and the inner tube 15. This reduces the accumulation of material on the inner wall of the material gun head 1 and the material gun tube 13 while increasing the pushing efficiency of the push rod 5. It solves the problem that when the existing feeding gun is used, the material that is not sufficiently heated will stick to the side wall of the push rod and fall back into the material gun head 1 and the material gun tube 13 as the push rod retracts. The material that accumulates in the material gun head 1 and the material gun tube 13 hardens and affects the smooth operation of the existing push rod 5 (solid and slender) and will cause the push rod to deform.

[0055] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, as long as there is no structural conflict, the features in the disclosed embodiments can be combined with each other in any manner. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A feeding gun with minimal material accumulation, characterized in that, include: The components include a feed gun head (1), a feed gun tube (13), a feed connection tee (2), a tee connector (3), a cylinder (4), a push rod (5), and a push rod head (6). The feed gun head (1) is screwed to one end of the feed gun tube (13), and the other end of the feed gun tube (13) is screwed to one end of the feed connection tee (2). The other end of the feed connection tee (2) is connected to one end of the tee connector (3), and the other end of the tee connector (3) is connected to the cylinder (4). The push rod (5) inside the cylinder (4) is... The hollow tube has a push rod head (6) at the front end of the push rod (5). The material gun tube (13) includes an outer tube (14) and an inner tube (15). The outer tube (14) and the inner tube (15) are sleeved together. The inner tube (15) is provided with a balance hole (16). The single-sided gap between the push rod (5) and the inner wall of the inner tube (15) is less than 1 mm. The single-sided gap between the push rod head (6) and the inner wall of the material gun head (1) is less than 1 mm. The single-sided gap between the push rod head (6) and the inner wall of the inner tube (15) is less than 1 mm.

2. The feeding gun with low material accumulation according to claim 1, characterized in that, The front end of the material gun head (1) is provided with a steam slit (12), which can introduce the high temperature gas of the mold into the inner diameter space of the material gun head (1). The material gun head (1) is provided with a material gun head pressure relief hole (11).

3. A feeding gun with minimal material accumulation according to claim 2, characterized in that, The feed connection tee (2) is provided with a feed channel (21), and the tee connector (3) is provided with a back pressure channel (31), a V-shaped sealing ring (32), and a first anti-vibration pad (33). The V-shaped sealing ring (32) is used for sealing between the tee connector (3) and the push rod (5), and the first anti-vibration pad (33) is provided between the tee connector (3) and the push rod (5).

4. A feeding gun with minimal material accumulation according to claim 3, characterized in that, The push rod (5) is sleeved and connected to the piston (51). An inner piston sealing ring (52) is provided between the push rod (5) and the piston (51). The push rod (5) and the piston (51) are connected by a nut (54). A gasket (53) is provided between the nut (54) and the piston (51). An inner tube piston guide ring (55) is sleeved on the outer ring of the piston (51).

5. A feeding gun with minimal material accumulation according to claim 4, characterized in that, One end of the cylinder body (41) of the cylinder (4) is screwed to the other end of the three-way connector (3), and the other end of the cylinder body (41) is connected to the cylinder head (42). A cylinder head ring (43) is provided between the cylinder head (42) and the cylinder body (41). A cylinder gasket (44) is provided on the inner end face of the cylinder head (42). A forward pressurization channel (45) is provided inside the cylinder head (42).

6. A feeding gun with minimal material accumulation according to claim 5, characterized in that, The end of the push rod (5) that is not connected to the piston (51) is connected to the push rod head (6). The push rod head (6) is provided with a push rod head pressure relief hole (61). The push rod head (6) is sleeved with the glyd ring (62). An air plug (7) is embedded in the end face of the push rod head (6). An air plug vent hole (71) is provided in the air plug (7).

7. A feeding gun with minimal material accumulation according to claim 6, characterized in that, The air passages of the air plug vent (61), the push rod head pressure relief hole (61), and the material gun head pressure relief hole (11) are connected.

8. A feeding gun with minimal material accumulation according to claim 7, characterized in that, The space between the cylinder (41), push rod (5), and piston (51) connected by the rearward pressurization channel (31) is the rearward air chamber. When pressurization is applied to the rearward air chamber through the rearward pressurization channel (31), the push rod (5) moves toward the cylinder (41).

9. A feeding gun with minimal material accumulation according to claim 7, characterized in that, The space between the cylinder (41), push rod (5), and piston (51) connected by the forward pressurization channel (45) is the forward air chamber. When pressurization is applied to the forward air chamber through the forward pressurization channel (45), the push rod (5) moves toward the material gun head (1).

10. A feeding gun with minimal material accumulation according to claim 1, characterized in that, The feed gun barrel (13) is connected to the machine base via a fixing frame (8).

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