Feeding gun more beneficial to foam particle forming

Abstract

A steam seam is formed in the front end of a material gun head, high-temperature gas of a mold can be guided into the inner diameter space of the material gun head through the steam seam, the material gun head 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 an air cylinder, and an air rod arranged in the air cylinder is of a hollow structure. The front end of the air rod is provided with a push rod head. According to the technical scheme that the steam seam is formed in the front end of the material gun head and can guide high-temperature gas of a mold into the inner diameter space of the material gun head, foam particle raw materials can be heated by high temperature overflowing from the steam seam when passing through the end space of the material gun head, and multi-section heating of the foam particle raw materials is achieved; the problems that under the condition that an existing feeding gun feeds too fast and too much materials, particles are prone to being accumulated, so that part of particles are not fully heated in the forming stage and are not fully puffed, and product defects are caused are solved.

Description

Technical Field

[0001] The invention relates to a foam mould feeding accessory, in particular to a feeding gun which is more conducive to the forming of foam particles. Background Art

[0002] In the foam molding production process, foam particles need to be added to the mold through a feeding gun. The existing feeding gun injects the foam particle raw materials into the high-temperature mold through the gun head. When the material is fed too quickly or too much, particle accumulation is likely to occur, resulting in some particles not being sufficiently heated during the molding stage, resulting in insufficient expansion, causing product defects. Summary of the invention

[0003] The present invention discloses a feeding gun which is more conducive to foam particle molding. The front end of the feeding gun head is provided with a steam seam, which can introduce the high temperature gas of the mold into the inner diameter space of the feeding gun head. The feeding gun head is screwed with one end of a feed connection tee, and the other end of the feed connection tee is connected to a cylinder. The gas rod provided in the cylinder is a hollow structure, and a push rod head is provided at the front end of the gas rod. The present invention provides a steam seam at the front end of the feeding gun head, and the steam seam can introduce the high temperature gas of the mold into the inner diameter space of the feeding gun head. The technical solution achieves that the foam particle raw material can be heated by the high temperature overflowing from the steam seam when passing through the end space of the feeding gun head, and the foam particle raw material is heated in multiple stages, which solves the problem that the existing feeding gun is prone to particle accumulation when feeding too fast or too much, so that some particles are not sufficiently heated in the forming stage, resulting in insufficient expansion, causing product defects.

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

[0005] A feeding gun which is more conducive to the forming of foam particles comprises: a feeding gun head, a feeding connection tee, a cylinder, a gas rod and a push rod head. A steam seam is arranged at the front end of the feeding gun head, and the steam seam can introduce the high-temperature gas of the mold into the inner diameter space of the feeding gun head. The feeding gun head is screwed to one end of the feeding connection tee, and the other end of the feeding connection tee is connected to the cylinder. The gas rod arranged in the cylinder is a hollow structure, and a push rod head is arranged at the front end of the gas rod.

[0006] It is further arranged that a first V-shaped honey seal is arranged between the material gun head and the feed connection tee, and an O-shaped seal is arranged between the feed connection tee and the cylinder.

[0007] It is further configured that the gas rod is connected to the feed connecting tee, the feed connecting tee is provided with a second V-shaped honey seal ring, the second V-shaped honey seal ring is used for sealing between the feed connecting tee and the gas rod, and a shock-absorbing pad is provided between the feed connecting tee and the piston of the gas rod.

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

[0009] It is further arranged that one end of the cylinder body of the cylinder is connected to the feed connection tee, and 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 gas 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 a material gun head pressure relief hole is arranged in the material gun head, and the air passages of the air plug, the pressure relief hole of the push rod head and the pressure relief hole of the material gun head are connected with each other.

[0012] It is further arranged that the feed connecting tee is provided with: a feed channel, a backward pressurizing channel, and the space between the cylinder body, the gas rod, and the piston connected by the backward pressurizing channel is a backward air chamber, and when the backward air chamber is pressurized through the backward pressurizing channel, the gas rod moves toward the cylinder body.

[0013] It is further arranged that the space between the cylinder body, the gas 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 gas rod moves toward the direction of the material gun head.

[0014] The present invention provides a technical scheme in which a steam seam is arranged at the front end of a feed gun head, and the steam seam can guide the high-temperature gas of the mold into the inner diameter space of the feed gun head, thereby realizing that the foam particle raw material can be heated by the high temperature overflowing from the steam seam when passing through the end space of the feed gun head, and the multi-stage heating of the foam particle raw material solves the problem that when the existing feeding gun feeds too fast or too much material, particle accumulation is easily generated, so that some particles are not sufficiently heated in the forming stage, resulting in insufficient expansion, causing product defects. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The three-dimensional Figure 1 ;

[0016] Figure 2 It is an exploded view of the parts of the present invention;

[0017] Figure 3 is a cross-sectional view of the present invention;

[0018] Figure 4 is a cross-sectional view of a material gun head of the present invention;

[0019] Figure 5It is a cross-sectional view of the feed connection tee of the present invention;

[0020] Figure 6 is a cross-sectional view of a cylinder of the present invention;

[0021] Figure 7 is a cross-sectional view of the gas rod of the present invention;

[0022] In the figure: material gun head 1, material gun head pressure relief hole 11, steam gap 12,

[0023] Feed connection tee 2, feed channel 21, backward pressurizing channel 22, first V-shaped honey seal 23, second V-shaped honey seal 24, shockproof pad 25, O-shaped sealing ring 26,

[0024] Cylinder 3, cylinder block 31, cylinder head 32, cylinder head ring 33, cylinder gasket 34, forward pressurizing passage 35,

[0025] Gas rod 4, piston 41, inner piston sealing ring 42, gasket 43, nut 44, inner tube piston guide ring 45, push rod head 5, push rod head pressure relief hole 51, Gley ring 52, gas plug 6, gas plug vent hole 61,

[0026] Front air chamber, rear air chamber. DETAILED DESCRIPTION

[0027] 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.

[0028] 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.

[0029] 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.

[0030] The present invention provides a quick mold change gun, the structural design of which simplifies the disassembly and assembly process of the gun and the cylinder, improves production efficiency, and achieves energy saving and reduction of the popping phenomenon in the foam molding process through reasonable pressure relief design and cylinder improvement. The specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] like Figures 1 to 7As shown, a feeding gun that is more conducive to foam particle molding includes: a feeding gun head 1, a feeding connection tee 2, a cylinder 3, a gas rod 4, and a push rod head 5. The front end of the feeding 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 feeding gun head 1. The design of the steam slit (12) helps to heat the foam particles in multiple stages, avoiding the problem of particle accumulation caused by too fast or too much feeding in traditional feeding guns, thereby improving the expansion effect of the foam particles and the uniformity of mold filling. The feeding gun head 1 is screwed to one end of the feeding connection tee 2, and the other end of the feeding connection tee 2 is connected to the cylinder 3. The gas rod 4 provided in the cylinder 3 is a hollow structure, and the front end of the gas rod 4 is provided with a push rod head 5.

[0032] Preferably, to ensure the sealing of the connection, a first V-shaped honey seal 23 is provided between the material gun head 1 and the feed connection tee 2 , and an O-shaped seal 26 is provided between the feed connection tee 2 and the cylinder 3 .

[0033] Preferably, the gas rod 4 is connected to the feed connection tee 2, and the feed connection tee 2 is provided with a second V-shaped honey seal 24, which is used for sealing between the feed connection tee 2 and the gas rod 4, and a shock-absorbing pad 25 is provided between the feed connection tee 2 and the piston 41 of the gas rod 4.

[0034] Preferably, the gas rod 4 is a hollow structure, which greatly reduces the working air pressure required by the cylinder and reduces energy consumption compared with the traditional solid structure. The gas rod 4 is sleeved and connected with the piston 41. The gas rod (4) reciprocates in the cylinder (3) through the piston (41). An inner piston sealing ring 42 is arranged between the gas rod 4 and the piston 41. The gas rod 4 and the piston 41 are connected through a nut 44. A gasket 43 is arranged between the piston 41 and the nut 44. An inner tube piston guide ring 45 is sleeved on the outer ring of the piston 41. The guide ring 45 is used to improve the movement stability of the gas rod (4) and prevent deviation during movement.

[0035] Preferably, one end of the cylinder body 31 of the cylinder 3 is connected to the feed connection tee 2, and the other end of the cylinder body 31 is connected to the cylinder head 32, a cylinder head ring 33 is arranged between the cylinder head 32 and the cylinder body 31, a cylinder gasket 34 is arranged on the inner end surface of the cylinder head 32, and a forward pressurizing channel 35 is arranged in the cylinder head 32.

[0036] Preferably, the end of the gas rod 4 not connected to the piston 41 is connected to the push rod head 5, the push rod head 5 is provided with a push rod head pressure relief hole 51, the push rod head 5 is sleeved with the grid ring 52, and the end surface of the push rod head 5 is embedded with an air plug 6, and the air plug 6 is provided with an air plug air hole 61.

[0037] Preferably, a pressure relief hole 11 is provided in the feed gun head 1, and the air passages of the air plug vent 61, the push rod head pressure relief hole 51, and the feed gun head pressure relief hole 11 are connected. This structure can further realize the connection of the air passages and pressure balance, effectively eliminate the gas generated during the molding process, reduce the probability of popping, improve the stability of the equipment during the foam particle feeding process, reduce the probability of disassembling the feed gun for cleaning, and increase production efficiency.

[0038] Preferably, the feed connecting tee 2 is provided with: a feed channel 21 and a backward pressurizing channel 22. The space between the cylinder body 31, the gas rod 4 and the piston 41 connected by the backward pressurizing channel 22 is a backward air chamber. When the backward air chamber is pressurized by the backward pressurizing channel 22, the gas rod 4 moves toward the cylinder body 31. When the piston 41 contacts the cylinder gasket 34, there is a negative pressure in the feed channel 21, and the foam particles are sucked into the push rod head 5 through the feed channel 21.

[0039] Preferably, the space between the cylinder body 31, the gas rod 4, and the piston 41 connected by the forward pressurizing channel 35 is the forward air chamber, and when the forward pressurizing channel 35 presses the forward air chamber, the gas rod 4 moves toward the material gun head 1 to press out the foam particles in the material gun head 1.

[0040] The present invention provides a steam seam 12 at the front end of the material gun head. The steam seam 12 can guide the high-temperature gas of the mold into the inner diameter space of the material gun head 1, thereby realizing that the foam particle raw material can be heated by the high temperature overflowing from the steam seam 12 when passing through the end space of the material gun head 1. The multi-stage heating of the foam particle raw material solves the problem that when the existing feeding gun feeds too fast or too much material, particle accumulation is easily generated, resulting in some particles not being sufficiently heated in the forming stage, resulting in insufficient expansion, causing product defects.

[0041] 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 which is more conducive to the forming of foam particles, characterized in that: include: A material gun head (1), a feed connection tee (2), a cylinder (3), a gas rod (4), and a push rod head (5); a steam slit (12) is arranged at the front end of the material gun head (1); the steam slit (12) can introduce high-temperature gas of the mold into the inner diameter space of the material gun head (1); the material gun head (1) is screwed to one end of the feed connection tee (2); the other end of the feed connection tee (2) is connected to the cylinder (3); the gas rod (4) arranged in the cylinder (3) is a hollow structure; and a push rod head (5) is arranged at the front end of the gas rod (4).

2. A feeding gun that is more conducive to foam particle molding according to claim 1, characterized in that: A first V-shaped honey seal ring (23) is arranged between the material gun head (1) and the feed connection tee (2), and an O-shaped seal ring (26) is arranged between the feed connection tee (2) and the cylinder (3).

3. A feeding gun more conducive to foam particle molding according to claim 2, characterized in that: The gas rod (4) is connected to the feed connection tee (2), and the feed connection tee (2) is provided with a second V-shaped honey seal (24), which is used for sealing between the feed connection tee (2) and the gas rod (4), and a shockproof pad (25) is provided between the feed connection tee (2) and the piston (41) of the gas rod (4).

4. A feeding gun more conducive to foam particle molding according to claim 3, characterized in that: The gas rod (4) and the piston (41) are sleeved and connected, an inner piston sealing ring (42) is arranged between the gas rod (4) and the piston (41), the gas rod (4) and the piston (41) are connected through a nut (44), a gasket (43) is arranged between the piston (41) and the nut (44), and an inner tube piston guide ring (45) is sleeved on the outer ring of the piston (41).

5. A feeding gun more conducive to foam particle molding according to claim 4, characterized in that: One end of a cylinder body (31) of the cylinder (3) is connected to a feed connection tee (2), and the other end of the cylinder body (31) is connected to a cylinder head (32). A cylinder head ring (33) is provided between the cylinder head (32) and the cylinder body (31), a cylinder gasket (34) is provided on the inner end surface of the cylinder head (32), and a forward pressurizing channel (35) is provided in the cylinder head (32).

6. A feeding gun more conducive to foam particle molding according to claim 5, characterized in that: The end of the gas rod (4) not connected to the piston (41) is connected to the push rod head (5), a push rod head pressure relief hole (51) is arranged in the push rod head (5), the push rod head (5) is sleeved with a grid ring (52), an air plug (6) is embedded in the end surface of the push rod head (5), and an air plug air hole (61) is arranged in the air plug (6).

7. A feeding gun more conducive to foam particle molding according to claim 6, characterized in that: A material gun head pressure relief hole (11) is arranged in the material gun head (1), and the air plug vent hole (61), the push rod head pressure relief hole (51) and the material gun head pressure relief hole (11) are connected by air passages.

8. A feeding gun more conducive to foam particle molding according to claim 7, characterized in that: The feed connection tee (2) is provided with: a feed channel (21) and a backward pressure channel (22); the space between the cylinder body (31), the gas rod (4) and the piston (41) connected by the backward pressure channel (22) is a backward gas chamber; when the backward gas chamber is pressurized by the backward pressure channel (22), the gas rod (4) moves toward the cylinder body (31).

9. A feeding gun more conducive to foam particle molding according to claim 8, characterized in that: The space between the cylinder body (31), the gas rod (4) and the piston (41) connected by the forward pressurizing channel (35) is a forward air chamber. When the forward air chamber is pressurized by the forward pressurizing channel (35), the gas rod (4) moves toward the material gun head (1).

Images