Feeding gun with few accumulated materials

Abstract

A material gun head is in threaded connection with one end of a material gun pipe, the other end of the material gun pipe is in threaded connection with one end of a feeding connecting tee joint, the other end of the feeding connecting tee joint is connected with one end of a tee joint connector, the other end of the tee joint connector is connected with an air cylinder, and a push rod arranged in the air cylinder is a hollow pipe. The front end of the push rod is provided with a push rod head, the material gun tube comprises an outer tube and an inner tube, the outer tube is sleeved with the inner tube, the inner tube is provided with a balance hole, the unilateral gap between the push rod and the inner wall of the inner tube is smaller than 1MM, the unilateral gap between the push rod head and the inner wall of the material gun head is smaller than 1MM, and the unilateral gap between the push rod head and the inner wall of the inner tube is smaller than 1MM. According to the technical scheme that the push rod is a hollow pipe, the weight of the push rod is reduced, and gaps between the push rod and the inner pipe, between the push rod head and the material gun head and between the push rod head and the inner pipe are controlled, so that the pushing efficiency of the push rod is improved while accumulation of objects on the inner walls of the material gun head and the material gun pipe is reduced; the problems that when an existing feeding gun is used, due to the fact that the existing feeding gun is not fully heated, materials which are not fully expanded adhere to the side wall of a push rod and return into a feeding gun head and a feeding gun barrel along with the push rod are solved; and after the materials accumulated in the material gun head and the material gun barrel are hardened, the smooth operation of the existing push rod (solid and slender) is influenced, and the push rod is deformed.

Description

Technical Field

[0001] The invention relates to a foam mould feeding accessory, in particular to a feeding gun with less material accumulation. Background Art

[0002] In the foam molding production process, it is necessary to add foam particles 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 part. When the material is fed too quickly or too much, it is easy to cause particle accumulation, so that some particles are not sufficiently heated during the forming stage and are not fully expanded. In this process, the material that is not sufficiently heated and is not fully expanded will stick to the side wall of the push rod and retreat to the gun head and the gun barrel as the push rod. After the material accumulated in the gun head and the gun barrel 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] The invention discloses a feeding gun with little material accumulation, wherein a feeding gun head is screwed to one end of a feeding gun barrel, the other end of the feeding gun barrel is screwed to one end of a feeding connecting tee, the other end of the feeding connecting tee is connected to one end of a tee connector, the other end of the tee connector is connected to a cylinder, a push rod arranged in the cylinder is a hollow tube, a push rod head is arranged at the front end of the push rod, the feeding gun barrel comprises an outer tube and an inner tube, the outer tube is sleeved with the inner tube, a balancing hole is arranged on the inner tube, a single-side gap between the push rod and the inner wall of the inner tube is less than 1MM, a single-side gap between the push rod head and the inner wall of the feeding gun head is less than 1MM, and a single-side gap between the push rod head and the inner wall of the inner tube is less than 1MM. The present invention 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, between the push rod head and the material gun head, and between the push rod head and the inner tube. This reduces the accumulation of materials on the material gun head and the inner wall of the material gun barrel and increases the propulsion efficiency of the push rod, thereby solving the problem that when the existing feeding gun is used, the material that is not fully heated and thus does not expand sufficiently will stick to the side wall of the push rod and will retreat into the material gun head and the material gun barrel as the push rod. After the material accumulated in the material gun head and the material gun barrel hardens, it will affect the smooth operation of the existing push rod (solid and slender) and cause the push rod to deform.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A feeding gun with little material accumulation comprises: a feeding gun head, a feeding gun barrel, a feeding connecting 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 barrel, the other end of the feeding gun barrel is screwed to one end of the feeding connecting tee, the other end of the feeding connecting tee is connected to one end of the tee connector, the other end of the tee connector is connected to the cylinder, the push rod arranged in the cylinder is a hollow tube, a push rod head is arranged at the front end of the push rod, the feeding gun barrel comprises: an outer tube and an inner tube, the outer tube is sleeved with the inner tube, the inner tube is provided with a balancing hole, the single-sided gap between the push rod and the inner wall of the inner tube is less than 1MM, the single-sided gap between the push rod head and the inner wall of the feeding gun head is less than 1MM, and the single-sided gap between the push rod head and the inner wall of the inner tube is less than 1MM.

[0006] It is further arranged that a steam gap is arranged at the front end of the material gun head, and the steam gap can introduce the high temperature gas of the mold into the inner diameter space of the material gun head, and a material gun head pressure relief hole is arranged in the material gun head.

[0007] It is further arranged that the feed connection tee is provided with a feed channel, the tee connector is provided with: a backward pressurization channel, a V-shaped honey seal, and a first shockproof pad, the V-shaped honey seal is used for sealing between the tee connector and the push rod, and the first shockproof pad is provided between the tee connector and the push rod

[0008] It is further configured that the push rod is connected to the piston sleeve, an inner piston sealing ring is arranged between the push rod and the piston, the push rod and the piston are connected through a nut, a gasket is arranged between the nut and the piston, and an inner inner tube piston guide ring is arranged on the outer ring of the piston.

[0009] It is further arranged that one end of the cylinder body of the cylinder is screwed to the other end of the three-way connector, the other end of the cylinder body is connected to the cylinder head, a cylinder head ring is arranged between the cylinder head and the cylinder body, a cylinder gasket is arranged on the inner end surface of the cylinder head, and a forward pressurizing channel is arranged in the cylinder head.

[0010] It is further arranged that the end of the push rod not connected to the piston is connected to the push rod head, a push rod head pressure relief hole is arranged in the push rod head, the push rod head is sleeved with the Gley ring, an air plug is embedded in the end surface of the push rod head, and an air plug air hole is arranged in the air plug.

[0011] It is further arranged that the air passages of the air plug vent hole, the push rod head pressure relief hole and the material gun head pressure relief hole are connected.

[0012] It is further arranged that the space between the cylinder body, the push rod and the piston connected by the backward pressurizing channel is a backward air chamber, and when the backward air chamber is pressurized by the backward pressurizing channel, the push rod moves toward the cylinder body.

[0013] It is further arranged that the space between the cylinder body, the push rod and the piston connected by the forward pressurizing channel is the front air chamber, and when the front air chamber is pressurized through the forward pressurizing channel, the push rod moves toward the direction of the material gun head.

[0014] It is further arranged that the material gun barrel is connected to the machine platform through a fixing frame.

[0015] The present invention 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, between the push rod head and the material gun head, and between the push rod head and the inner tube. This reduces the accumulation of materials on the material gun head and the inner wall of the material gun barrel and increases the propulsion efficiency of the push rod, thereby solving the problem that when the existing feeding gun is used, the material that is not fully heated and thus does not expand sufficiently will stick to the side wall of the push rod and will retreat into the material gun head and the material gun barrel as the push rod. After the material accumulated in the material gun head and the material gun barrel hardens, it will affect the smooth operation of the existing push rod (solid and slender) and cause the push rod to deform. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The three-dimensional Figure 1 ;

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

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

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

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

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

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

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

[0024] Fig. 9 is a cross-sectional view of a putter head of the present invention;

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

[0026] In the figure: material gun head 1, material gun head pressure relief hole 11, steam seam 12, material gun barrel 13, outer tube 14, inner tube 15, balance hole 16, feed connection tee 2, feed channel 21,

[0027] Three-way connector 3, backward pressurized channel 31, V-shaped honey seal 32, first shockproof pad 33,

[0028] Cylinder 4, cylinder block 41, cylinder head 42, cylinder head ring 43, cylinder gasket 44, forward pressurizing passage 45,

[0029] Push rod 5, piston 51, inner piston sealing ring 52, gasket 53, nut 54, inner tube piston guide ring 55, push rod head 6, push rod head pressure relief hole 61, grid ring 62, air plug 7, air plug air hole 71, fixing frame 8, forward air chamber, and backward air chamber. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0033] like Figures 1 to 10 As shown, the present invention provides a feeding gun with little material accumulation, including: a feeding gun head 1, a feeding gun barrel 13, a feeding connecting 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 barrel 13 by threaded connection, and the other end of the material gun barrel 13 is fixedly connected to one end of the feed connection tee 2 by threaded connection. 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 arranged in 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 propulsion efficiency of the push rod.

[0036] The front end of the push rod 5 is provided with a push rod head 6. The material gun barrel 13 includes an outer tube 14 and an inner tube 15, the outer tube 14 is sleeved with the inner tube 15, and the side wall of the inner tube 15 is provided with a plurality of balancing holes 16. The balancing holes 16 are used to improve the air flow stability and avoid uneven expansion of the material caused by air flow turbulence.

[0037] By providing the balancing hole 16, while maintaining the material conveying stability, the puffing effect is further improved and the material accumulation phenomenon is reduced.

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

[0039] The precise control of the key gaps effectively avoids the accumulation of materials at these positions, while ensuring the smooth operation of the push rod 5 and preventing equipment operation obstacles caused by hardening of materials.

[0040] Preferably, a steam slit 12 is provided at the front end of the material gun head 1. The steam slit 12 is used to introduce the high-temperature gas in the mold into the inner diameter space of the material gun head 1 to enhance the expansion effect of the foam particles. A material gun head pressure relief hole 11 is also provided in the material gun head 1 to balance the internal pressure and prevent the accumulation of materials due to airflow blockage.

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

[0042] Preferably, a feed channel 21 is provided in the feed connection tee 2, and the tee connector 3 includes a backward pressurizing channel 31, a V-shaped sealing ring 32 and a first shockproof 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 shockproof pad 33 can effectively reduce the vibration and noise during the operation of the equipment.

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

[0044] Preferably, the push rod 5 is connected to the piston 51 through a nut 54, and a gasket 53 is provided between the nut 54 and the piston 51 to enhance the stability and air tightness of the connection. The outer ring sleeve of the piston 51 is provided with an inner inner tube piston guide ring 55 for providing a more stable motion guide.

[0045] The use of the guide ring 55 optimizes the stability of the 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 the three-way connector 3 by threading, 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, which is used to seal the gas inside the cylinder 4. A cylinder gasket 44 is provided on the inner end surface of the cylinder head 42, and a forward pressurizing channel 45 is opened to pressurize the forward air chamber.

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

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

[0049] The interconnected design of the pressure relief hole 61 of the putter head and the air plug vent hole 71 significantly improves the pressure relief performance and prevents operation obstruction caused by gas accumulation.

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

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

[0052] Preferably, the material gun barrel 13 is connected to the machine through a fixing frame 8, and the fixing frame 8 is of adjustable design, 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 fixing frame 8 enhances the applicability of the equipment and provides higher flexibility for diversified production.

[0054] The present invention reduces the weight of the push rod 5 by making the push rod 5 a hollow tube and controls the gaps between the push rod 5 and the inner tube 15, between the push rod head 6 and the material gun head 1, and between the push rod head 1 and the inner tube 15. This reduces the accumulation of materials on the inner walls of the material gun head 1 and the material gun barrel 13 and increases the propulsion efficiency of the push rod 5. This solves the problem that when the existing feeding gun is used, the material that is not fully heated and thus does not expand sufficiently will stick to the side wall of the push rod and will retreat into the material gun head 1 and the material gun barrel 13 as the push rod. After the material accumulated in the material gun head 1 and the material gun barrel 13 hardens, it will affect the smooth operation of the existing push rod 5 (solid and slender) and cause the push rod to deform.

[0055] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. 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 less material accumulation, characterized in that: include: The material gun head (1), the material gun barrel (13), the feed connection tee (2), the tee connector (3), the cylinder (4), the push rod (5), and the push rod head (6); the material gun head (1) is screwed to one end of the material gun barrel (13); the other end of the material gun barrel (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); the other end of the tee connector (3) is connected to the cylinder (4); the push rod (5) provided in 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 barrel (13) comprises 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 balancing hole (16). The single-side gap between the push rod (5) and the inner wall of the inner tube (15) is less than 1MM. The single-side gap between the push rod head (6) and the inner wall of the material gun head (1) is less than 1MM. The single-side gap between the push rod head (6) and the inner wall of the inner tube (15) is less than 1MM.

2. A feeding gun with less 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), and the steam slit (12) 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 less 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 backward pressurizing channel (31), a V-shaped honey seal (32), and a first shockproof pad (33), wherein the V-shaped honey seal (32) is used for sealing between the tee connector (3) and the push rod (5), and the first shockproof pad (33) is provided between the tee connector (3) and the push rod (5).

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

5. A feeding gun with less material accumulation according to claim 4, characterized in that: One end of a cylinder body (41) of the cylinder (4) is screwed to the other end of a three-way connector (3), and the other end of the cylinder body (41) is connected to a 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 surface of the cylinder head (42), and a forward pressurizing channel (45) is provided in the cylinder head (42).

6. A feeding gun with less material accumulation according to claim 5, characterized in that: The end of the push rod (5) not connected to the piston (51) is connected to the push rod head (6), a push rod head pressure relief hole (61) is arranged in the push rod head (6), the push rod head (6) is sleeved with a grid ring (62), an air plug (7) is embedded in the end surface of the push rod head (6), and an air plug air hole (71) is arranged in the air plug (7).

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

8. A feeding gun with less material accumulation according to claim 7, characterized in that: The space between the cylinder body (41), the push rod (5) and the piston (51) connected by the backward pressure channel (31) is a backward air chamber. When the backward air chamber is pressurized by the backward pressure channel (31), the push rod (5) moves toward the cylinder body (41).

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

10. The feeding gun with less material accumulation according to claim 1, characterized in that: The material gun barrel (13) is connected to the machine platform through a fixed frame (8).

Images