Quick mold changing material gun

Abstract

This invention discloses a quick-change die-changing material gun. One end of the material gun head is connected to a quick-release connector, and the other end of the quick-release connector is sleeved onto one end of a feed connection tee and secured with a clip. The other end of the feed connection tee is connected to a cylinder. The cylinder contains a hollow air rod, and a push rod head at the front end of the air rod is equipped with an air plug. The air plug has an air plug vent, and a push rod head pressure relief hole inside the push rod head communicates with the air passage of the air plug vent. The air passage of the push rod head pressure relief hole is connected to the material gun head pressure relief hole of the material gun head. This invention achieves rapid disassembly of the feed gun head and cylinder by using a quick-release connector for the gun head and a tee for the feed connection, secured with a fixing clip. This solves the problem of cumbersome and time-consuming steps in replacing the feed gun and cylinder. By designing the air rod inside the cylinder as a hollow structure, it addresses the issue of existing cylinders requiring high thrust, thus necessitating higher working air pressure and consequently higher energy consumption. Furthermore, by connecting the pressure relief channels of the air plug, push rod head, and feed gun head, it reduces the probability of foam bursting. Through these technical solutions, the overall production efficiency of the feed gun component in the foam molding production process is increased.

Description

Technical Field

[0001] This invention relates to a foam mold feeding accessory, and more particularly to a quick mold changing material gun. 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 has a complex structure design, and the process of changing the feeding gun and cylinder when changing molds is cumbersome and time-consuming, which affects production efficiency. The air rod inside the cylinder is solid, which leads to a greater demand for cylinder thrust, thus requiring higher working air pressure and resulting in higher energy consumption. A large amount of hot steam is generated during the foam foaming and molding stage. If the air at the push end of the air rod cannot be discharged in time, it can easily cause bursting, requiring disassembly of the feeding gun for cleaning, which also affects production efficiency. Summary of the Invention

[0003] This invention discloses a quick-change die-changing material gun. One end of the material gun head is connected to a quick-release connector, and the other end of the quick-release connector is sleeved onto one end of a feed connection tee and secured with a clip. The other end of the feed connection tee is connected to a cylinder. The cylinder contains a hollow air rod, and a push rod head at the front end of the air rod is equipped with an air plug. The air plug has an air plug vent, and a push rod head pressure relief hole inside the push rod head communicates with the air passage of the air plug vent. The air passage of the push rod head pressure relief hole is connected to the material gun head pressure relief hole of the material gun head. This invention achieves rapid disassembly of the feed gun head and cylinder by using a quick-release connector for the gun head and a tee for the feed connection, secured with a fixing clip. This solves the problem of cumbersome and time-consuming steps in replacing the feed gun and cylinder. By designing the cylinder's internal air rod as a hollow structure, it addresses the issue of existing cylinders requiring high thrust, thus necessitating higher working air pressure and consequently higher energy consumption. The interconnection of the pressure relief channels through the air plug, push rod head, and feed gun head reduces the probability of bursting. Furthermore, the matching combination of the positioning protrusion ring and the positioning groove ring, along with the insertion of the fixing clip into the slot, ensures rapid and accurate positioning and fixation, simplifying operation and providing strong sealing, avoiding the wear and failure of complex spring or steel ball structures in existing technologies. The combination of V-shaped sealing rings and O-rings further enhances leak-proof performance. These technical solutions comprehensively increase the production efficiency of the feed gun component in the foam molding process and achieve unexpected synergistic effects: shortening mold changeover time, reducing energy consumption, and lowering the probability of bursting.

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

[0005] A quick-change die-changing material gun includes: a die-changing head, a quick-release die-changing connector, a feed connection tee, a cylinder, a piston rod, a push rod head, and a fixing clip. One end of the die-changing head is connected to the quick-release connector. The other end of the quick-release connector is fitted onto one end of the feed connection tee and secured with the fixing clip. The other end of the feed connection tee is connected to the cylinder. The piston rod inside the cylinder has a hollow structure. The push rod head at the front end of the piston rod has an air plug with a vent hole. The push rod head pressure relief hole is connected to the air passage of the air plug vent hole. The air passage of the push rod head pressure relief hole is connected to the die-changing head pressure relief hole of the die-changing head.

[0006] Further, the material gun head and the quick-release connector are connected by threads, a first V-shaped sealing ring is provided between the material gun head and the quick-release connector, a first O-ring and a groove are provided on the outside of the quick-release connector, and a positioning protrusion ring is provided at one end of the quick-release connector that connects to the feed connection tee.

[0007] Further, the material gun head is fixedly connected to a fixing frame, which includes a pressure plate frame and a T-ring. The T-ring is located between the outer wall of the material gun head and the inner side of the pressure plate frame.

[0008] Further, the positioning protrusion ring of the feed connection tee and the quick-release connector of the nozzle is provided with a matching positioning groove ring. The end of the feed connection tee connected to the quick-release connector of the nozzle is provided with a card slot, the position of the card slot corresponds to the card groove, and the fixing card is inserted into the card slot and the card groove to fix the quick-release connector of the nozzle to the feed connection tee. The inner wall of the end of the feed connection tee connected to the cylinder is provided with a second V-shaped sealing ring, a piston gasket, and a second O-ring sealing ring. The feed connection tee is provided with a feed channel and a retraction pressurization channel.

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

[0010] Further configuration: the end of the piston rod near the cylinder head is connected to the piston; an inner piston ring is installed between the piston rod and the piston; two inner tube piston seals are fitted on the outside of the piston; an inner tube piston guide ring is installed between the two inner tube piston seals; the piston rod and piston are connected by a nut; a gasket is installed between the piston and the nut.

[0011] Further modifications include screwing the pushrod head to the pneumatic rod and attaching a glyph to the outer ring of the pushrod head.

[0012] Further configuration: the space between the cylinder block and the piston rod, 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 piston rod moves toward the cylinder block.

[0013] Further configuration: the space between the cylinder and the air rod, which are 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 air rod moves toward the material gun head.

[0014] This invention achieves rapid disassembly of the feed gun head and cylinder by using a quick-release connector for the gun head and a tee for the feed connection, secured with a fixing clip. This solves the problem of cumbersome and time-consuming steps in replacing the feed gun and cylinder. By designing the cylinder's internal air rod as a hollow structure, it addresses the issue of existing cylinders requiring high thrust, thus necessitating higher working air pressure and consequently higher energy consumption. The interconnection of the pressure relief channels through the air plug, push rod head, and feed gun head reduces the probability of bursting. Furthermore, the matching combination of the positioning protrusion ring and the positioning groove ring, along with the insertion of the fixing clip into the slot, ensures rapid and accurate positioning and fixation, simplifying operation and providing strong sealing, avoiding the wear and failure of complex spring or steel ball structures in existing technologies. The combination of V-shaped sealing rings and O-rings further enhances leak-proof performance. These technical solutions comprehensively increase the production efficiency of the feed gun component in the foam molding process and achieve unexpected synergistic effects: shortening mold changeover time, reducing energy consumption, and lowering the probability of bursting. Attached Figure Description

[0015] Figure 1 The three-dimensional representation of the present invention Figure 1 ;

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

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

[0018] Figure 4 This is a cross-sectional view of the feeding process of the present invention;

[0019] Figure 5 This is a cross-sectional view of the feeding completion state of the present invention;

[0020] Figure 6 This is a cross-sectional view of the feed gun head and fixing frame of the present invention;

[0021] Figure 7 This is a cross-sectional view of the feed connection tee of the present invention;

[0022] Figure 8 This is a cross-sectional view of the cylinder of the present invention;

[0023] Figure 9 This is a cross-sectional view of the gas spring of the present invention;

[0024] In the diagram: 1. Fixing bracket; 11. Pressure plate bracket; 12. T-ring; 2. Material gun head; 21. Material gun head pressure relief hole; 22. First V-shaped sealing ring; 3. Quick-release connector for the gun head; 31. First O-ring seal; 32. Positioning protrusion ring; 33. Slot.

[0025] 4. Feed connection tee; 41. Feed channel; 42. Reverse pressurization channel; 43. Second V-shaped sealing ring; 44. Piston gasket; 45. Second O-ring seal; 46. Card slot; 47. Positioning groove ring.

[0026] Cylinder 5, Cylinder block 51, Cylinder head 52, Cylinder head ring 53, Cylinder head gasket 54, Forward pressurization passage 55

[0027] 6. Gas rod 61. Piston 62. Inner piston ring 63. Gasket 64. Nut 65. Inner tube piston guide ring 66. Inner tube piston seal ring

[0028] 7. Push rod head, 71. Push rod head pressure relief hole, 72. Glyd ring, 73. Air plug, 74. Air plug vent, 8. Fixing clip, 91. Forward air chamber, 92. Reverse air chamber. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] 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.

[0032] This invention provides a quick-change material gun, whose structural design simplifies the disassembly and assembly process of the material gun and cylinder, improving production efficiency. Through reasonable pressure relief design and cylinder improvements, it achieves energy savings and reduces foam bursting during molding. The specific embodiments of this invention are described in detail below with reference to the accompanying drawings.

[0033] like Figures 1 to 9As shown, this invention provides a quick-change mold-changing material gun, comprising: a material gun head 2, a quick-release connector 3, a feed connection tee 4, a cylinder 5, a pneumatic rod 6, a push rod head 7, and a fixing clip 8. One end of the material gun head 2 is connected to the quick-release connector 3. The other end of the quick-release connector 3 is connected to one end of the feed connection tee 4 and fixed with the fixing clip 8. The other end of the feed connection tee 4 is connected to the cylinder 5. The pneumatic rod 6 inside the cylinder 5 has a hollow structure, which significantly reduces the working air pressure required by the cylinder compared to a traditional solid structure, thus reducing energy consumption. The push rod head 7 at the front end of the pneumatic rod 6 is equipped with an air plug 73, and the air plug 73 has an air plug vent 74. The push rod head pressure relief hole 71 inside the push rod head 7 communicates with the air passage of the air plug vent 74. The air passage of the push rod head pressure relief hole 71 is connected to the material gun head pressure relief hole 21 of the material gun head 2. By designing this pressure relief channel, the present invention effectively eliminates the gas generated during the molding process, reduces the probability of bursting, improves the stability of the equipment during the feeding of foam particles, reduces the probability of needing to disassemble the feeding gun for cleaning, and increases production efficiency.

[0034] Preferably, the material gun head 2 and the quick-release connector 3 are connected by threads, and a first V-shaped sealing ring 22 is provided between the material gun head 2 and the quick-release connector 3 to effectively prevent material leakage. A first O-ring 31 is provided on the outer side of the quick-release connector 3 to ensure airtightness.

[0035] Preferably, the material gun head 2 is fixedly connected to the fixing frame 1. The material gun head 2 is fixedly connected to other components through the fixing frame 1. The fixing frame 1 includes a pressure plate frame 11 and a T-ring 12. The T-ring 12 is disposed between the outer wall of the material gun head 2 and the inner side of the pressure plate frame 11. This ensures the stability of the material gun head during operation and avoids loosening.

[0036] Preferably, the end of the quick-release connector 3 that connects to the feed tee 4 is provided with a positioning protrusion ring 32. The plane of the positioning protrusion ring 32 of the feed tee 4 and the quick-release connector 3 is provided with a matching positioning groove ring 47. A slot 33 is provided on the outer side of the quick-release connector 3. A card slot 46 is provided at the end of the feed tee 4 that connects to the quick-release connector 3. The position of the card slot 46 corresponds to the slot 33. A fixing card 8 is inserted into the card slot 46 and the slot 33 to fix the quick-release connector 3 and the feed tee 4. Disassembly can be achieved simply by pulling out the fixing card 8. This structure ensures the accuracy and stability of the connection. Disassembly only requires pulling out the fixing card 8, which is simpler and more reliable than the existing steel ball or spring mechanism. Furthermore, the sealing ring combination prevents foam particle leakage. The feed gun head 2 or the cylinder 5 can be replaced individually without replacing the entire set of parts, increasing the efficiency of parts replacement and reducing the number of spare parts, thus reducing spare parts costs.

[0037] Preferably, the inner wall of the end of the feed connection tee 4 that connects to the cylinder 5 is provided with a second V-shaped sealing ring 43, a piston gasket 44, and a second O-ring seal 45 to further enhance the sealing performance. The feed connection tee 4 is provided with a feed channel 41 and a retraction pressurization channel 42.

[0038] Preferably, one end of the cylinder body 51 of the cylinder 5 is connected to the feed connection tee 4 by a thread, and the other end of the cylinder body 51 is connected to the cylinder head 52. The cylinder head 52 is provided with a forward pressurization channel 55, and a cylinder head ring 53 is provided between the cylinder head 52 and the cylinder body 51. A cylinder gasket 54 is provided on the inner end face of the cylinder head 52.

[0039] Preferably, the end of the piston rod 6 near the cylinder head 52 is connected to the piston 61. An inner piston ring 62 is provided between the piston rod 6 and the piston 61. Two inner tube piston seal rings 66 are fitted on the outside of the piston 61. An inner tube piston guide ring 65 is provided between the two inner tube piston seal rings 66. The piston rod 6 and the piston 61 are connected by a nut 64. A gasket 63 is provided between the piston 61 and the nut 64.

[0040] Preferably, the push rod head 7 is screwed to the gas rod 6, and the outer ring of the push rod head 7 is fitted with a glyph ring 72.

[0041] Preferably, the space between the cylinder 51 and the air rod 6, which are connected by the retracting pressurization channel 42, is the retracting air chamber 92. When pressurization is applied to the retracting air chamber 92 through the retracting pressurization channel 42, the air rod 6 moves towards the cylinder 51. At this time, a negative pressure is formed in the feeding channel 41, and the foam particle raw material is sucked in and waits to be pressed into the mold from the material gun head 2.

[0042] Preferably, the space between the cylinder 51 and the air rod 6 connected by the forward pressurization channel 55 is the forward air chamber 91. When pressurization is applied to the forward air chamber 91 through the forward pressurization channel 55, the air rod 6 moves toward the material gun head 2, and the foam particle raw material is pressed from the material gun head 2 into the mold.

[0043] 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 quick-change die-changing gun, characterized in that, include: The components are: a material gun head (2), a quick-release connector (3), a feed connection tee (4), a cylinder (5), a rod (6), a push rod head (7), and a fixing clip (8). The material gun head (2) is connected to one end of the quick-release connector (3). The other end of the quick-release connector (3) is connected to one end of the feed connection tee (4) and fixed with the fixing clip (8). The other end of the feed connection tee (4) is connected to the cylinder (5). The rod (6) inside the cylinder (5) is a hollow structure. The push rod head (7) at the front end of the rod (6) is equipped with an air plug (73), and the air plug (73) has an air plug vent hole (74). The push rod head pressure relief hole (71) inside the push rod head (7) is connected to the air passage of the air plug vent hole (74). The air passage of the push rod head pressure relief hole (71) is connected to the material gun head pressure relief hole (21) of the material gun head (2). The material gun head (2) is connected to the gun head quick-release connector (3) by a thread. A first V-shaped connection is provided between the material gun head (2) and the gun head quick-release connector (3). The outer side of the quick-release connector (3) is provided with a first O-ring (31) and a groove (33). The end of the quick-release connector (3) connected to the feed connection tee (4) is provided with a positioning protrusion ring (32). The plane of the positioning protrusion ring (32) of the feed connection tee (4) and the quick-release connector (3) of the gun head is provided with a matching positioning groove ring (47). The end of the feed connection tee (4) connected to the quick-release connector (3) of the gun head is provided with a clip. The slot (46) and the card slot (46) are positioned corresponding to the card slot (33). The fixed card (8) is inserted into the card slot (46) and the card slot (33) to fix the quick-release connector (3) of the gun head to the feed connection tee (4). The inner wall of the end of the feed connection tee (4) connected to the cylinder (5) is provided with a second V-shaped honey seal ring (43), a piston pad (44), and a second O-ring seal ring (45). The feed connection tee (4) is provided with a feed channel (41) and a back pressure channel (42).

2. The quick mold-changing material gun according to claim 1, characterized in that: The material gun head (2) is fixedly connected to the fixing frame (1). The fixing frame (1) includes a pressure plate frame (11) and a T-ring (12). The T-ring (12) is located between the outer wall of the material gun head (2) and the inner side of the pressure plate frame (11).

3. The quick mold-changing material gun according to claim 2, characterized in that: One end of the cylinder body (51) of the cylinder (5) is connected to the feed connection tee (4) by a thread, and the other end of the cylinder body (51) is connected to the cylinder head (52). The cylinder head (52) is provided with a forward pressurization channel (55), and a cylinder head ring (53) is provided between the cylinder head (52) and the cylinder body (51). A cylinder gasket (54) is provided on the inner end face of the cylinder head (52).

4. A quick mold-changing material gun according to claim 3, characterized in that: The end of the piston rod (6) near the cylinder head (52) is connected to the piston (61). An inner piston ring (62) is provided between the piston rod (6) and the piston (61). Two inner tube piston seals (66) are fitted on the outside of the piston (61). An inner tube piston guide ring (65) is provided between the two inner tube piston seals (66). The piston rod (6) and the piston (61) are connected by a nut (64). A gasket (63) is provided between the piston (61) and the nut (64).

5. A quick mold-changing material gun according to claim 4, characterized in that: The pusher head (7) is screwed to the air rod (6), and the outer ring of the pusher head (7) is fitted with a glyph (72).

6. A quick mold-changing material gun according to claim 5, characterized in that: The space between the cylinder block (51) and the piston rod (6) connected by the retraction pressurization channel (42) is the retraction air chamber (92). When pressurization is applied to the retraction air chamber (92) through the retraction pressurization channel (42), the piston rod (6) moves toward the cylinder block (51).

7. A quick mold-changing material gun according to claim 6, characterized in that: The space between the cylinder (51) and the air rod (6) connected by the forward pressurization channel (55) is the forward air chamber (91). When pressurization is applied to the forward air chamber (91) through the forward pressurization channel (55), the air rod (6) moves toward the material gun head (2).

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