Connecting structure of nozzle and splitter plate and disassembling and assembling method

Abstract

The connecting structure comprises the splitter plate, a nozzle body and a spring, the splitter plate is provided with a mounting hole, a sleeve is mounted in the mounting hole, a fixing sleeve is mounted at the bottom of the sleeve, a moving seat is mounted on the fixing sleeve, the moving seat is inserted into the fixing sleeve and can move up and down, and a pressing sleeve is mounted at the bottom of the fixing sleeve. The upper end of the pressing sleeve abuts against a spring, the upper end of the spring abuts against the bottom of a movable base, the movable base comprises an insertion rod located at the upper end, the insertion rod penetrates through the sleeve and extends out of the upper end of the sleeve, and a movable ring is fixedly installed at the top of the insertion rod. The invention provides a connecting structure of a nozzle and a splitter plate and a disassembly and assembly method. The phenomenon that the nozzle and the splitter plate are meshed is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of hot runners, and more specifically, to a connection structure and a disassembly method of a nozzle and a manifold. Background Art

[0002] The manifold and nozzle are two major components in the hot runner system of the injection mold. These two components need to be connected with threads and a certain torque to prevent glue leakage at the connection. During the use of the hot runner system, the manifold and nozzle are repeatedly heated, expanded, and cooled. The threaded connection between the manifold and the nozzle is prone to deformation, which makes it easy to bite during disassembly, resulting in the scrapping of the nozzle or the need for the manifold to be re-expanded, which causes great trouble and high maintenance costs for the later maintenance of the hot runner. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a connection structure and a disassembly method for a nozzle and a diverter plate to avoid the tooth-gripping phenomenon between the nozzle and the diverter plate.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a connection structure between a nozzle and a diverter plate, comprising a diverter plate, a nozzle body, and a spring; the diverter plate is provided with a mounting hole, a sleeve is installed in the mounting hole, a fixed sleeve is installed at the bottom of the sleeve, a movable seat is installed at the fixed sleeve, the movable seat is inserted into the fixed sleeve, the movable seat can move up and down, a pressing sleeve is installed at the bottom of the fixed sleeve, the upper end of the pressing sleeve abuts against a spring, the upper end of the spring abuts against the bottom of the movable seat, the movable seat comprises an insertion rod at the upper end, the insertion rod passes through the sleeve and extends out of the upper end of the sleeve, and a movable ring is fixedly installed on the top of the insertion rod; the nozzle The nozzle body passes through the sleeve, the fixed sleeve, the pressing sleeve and the movable ring. The nozzle body is installed with a fixed ring. The fixed ring can pass through the sleeve, the fixed sleeve, the pressing sleeve and the movable ring. The mounting hole is also installed with an insert sleeve. The insert sleeve is located above the nozzle body. The movable ring abuts against the lower end of the fixed ring under the action of a spring, so that the upper end face of the nozzle body abuts against and fits the lower end face of the insert sleeve. A boss is provided on the outer wall of the fixed ring, and the movable ring is provided with a groove body one and a groove body two. The boss can pass through the groove body one, and the groove body two is located at the upper end of the movable ring. The groove body two and the groove body one are staggered in the circumferential direction of the movable ring, and the boss can be inserted into the groove body two.

[0005] The present invention is further configured such that the outer diameter of the fixed ring is smaller than the inner diameters of the sleeve, the fixed sleeve and the pressing sleeve, the outer diameter of the fixed ring is the same as the inner diameter of the movable ring, the bosses are evenly distributed along the circumference of the outer periphery of the fixed ring, and the groove body 1 and the groove body 2 are both arranged one-to-one with the bosses.

[0006] The present invention is further configured such that the first groove body penetrates the moving ring from top to bottom, and the second groove body penetrates the top of the moving ring.

[0007] The present invention is further configured such that connecting components are fixedly installed on both sides of the movable seat, and the connecting components pass through a side away from the movable seat and extend out of a side wall of the fixed sleeve.

[0008] The present invention is further configured such that a collar is mounted on one end of the connecting component away from the movable seat, and the collar is sleeved into the fixed sleeve.

[0009] The present invention is further configured that the pressing sleeve is threadedly connected and inserted into the fixing sleeve.

[0010] The present invention is further configured such that the sleeve comprises a raised portion located at the bottom, the raised portion is inserted into the top of the fixing sleeve, and the raised portion is threadedly connected to the fixing sleeve.

[0011] The present invention is further configured such that the fixing sleeve is provided with a slot, and the connecting component passes through the slot.

[0012] The present invention also adopts the following technical scheme: a method for disassembling and assembling a connection structure between a nozzle and a manifold, comprising S1 disassembly: ① loosen the pressing sleeve downward to reduce the compression of the spring, hold the nozzle body to keep its position fixed, pull down the collar, and the collar drives the movable ring to move downward to separate the boss from the second slot up and down; ② slightly rotate the nozzle body and then loosen the collar, so that the upper end of the movable ring presses against the bottom surface of the fixed ring, slightly pull down and rotate the nozzle body, and when the boss moves to align with the first slot up and down, the first slot automatically fits into the boss, and this The nozzle body is pulled downwards to separate the nozzle body from the manifold; it also includes S2 installation: ① Pull down the sleeve ring, insert the nozzle body from the bottom of the sleeve, and the boss passes through the groove body 1 so that the fixed ring is located above the movable ring; ② Slightly rotate the nozzle body, loosen the sleeve ring, and continue to rotate the nozzle body. When the boss moves to align with the groove body 2 up and down, the groove body 2 automatically fits into the boss; ③ Tighten the sleeve upwards, and move the sleeve position upwards so that the movable ring drives the fixed ring and the nozzle body to move upward synchronously, so that the upper end of the nozzle body abuts against the bottom of the insert tube.

[0013] In summary, the present invention has the following beneficial effects:

[0014] The connection structure of the nozzle body and the manifold plate is used to avoid deformation of the connection thread between the nozzle body and the manifold plate during repeated high temperature and cooling cycles, reducing maintenance costs and increasing the service life of the manifold plate and the nozzle body. The coordinated operation of the pressing sleeve and the collar reduces the lifting distance caused by the screwing of the collar, improving the operating efficiency. At the same time, by controlling the pressing sleeve to loosen downward, the collar can be easily pulled down by the operator, ensuring that the spring provides sufficient support force to make the nozzle body press against the gasket, and also facilitating the rapid separation of the nozzle body from the manifold plate when disassembling, thereby improving the convenience of disassembly and installation of the nozzle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a cross-sectional view of an embodiment;

[0016] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0017] Figure 3 is a cross-sectional view of a moving ring in an embodiment;

[0018] Figure 4 2 is a cross-sectional view of a fixing ring in an embodiment.

[0019] Figure numerals: diverter plate 1, glue inlet channel 11, mounting hole 12, insert sleeve 2, plug hole 21, connecting hole 22, pad 23, nozzle body 3, glue inlet channel 2 31, sleeve 4, protrusion 41, fixed sleeve 5, slot 51, pressing sleeve 6, spring 61, movable ring 7, through hole 71, groove body 1 72, groove body 2 73, fixed ring 8, boss 81, sleeve ring 9, connecting part 91, movable seat 92, insert rod 921. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figure 1-Figure 4 As shown, this embodiment discloses a connection structure between a nozzle and a manifold, including a manifold 1, the manifold 1 is provided with a mounting hole 12, an insert 2 is installed on the top of the manifold 1, and the insert 2 is inserted into the mounting hole 12. The manifold 1 is also provided with a glue inlet channel 11, and the insert 2 is provided with a plug hole 21 and a connecting hole 22, and the two ends of the connecting hole 22 are respectively connected to the plug hole 21 and the glue inlet channel 11, and the plug hole 21 is used to insert the valve needle.

[0022] like Figure 2 As shown, a sleeve 4 is installed at the bottom of the manifold 1, and the sleeve 4 is inserted into the bottom of the mounting hole 12. The sleeve 4 includes a raised portion 41 located on the outer wall of the bottom, and the raised portion 41 is an annular structure. A fixing sleeve 5 is installed on the raised portion 41, and the fixing sleeve 5 is threadedly connected and inserted into the raised portion 41. Slots 51 are provided on both sides of the fixing sleeve 5, and the slots 51 pass through the sides of the fixing sleeve 5. The length direction of the slots 51 is arranged along the axial direction of the fixing sleeve 5.

[0023] like Figure 2 As shown, the fixed sleeve 5 is installed with a moving seat 92, and the moving seat 92 can move up and down. Specifically, the bottom of the moving seat 92 is inserted into the fixed sleeve 5, and the connecting parts 91 are fixedly installed on both sides of the moving seat 92. The connecting parts 91 pass through and extend out of the side wall of the fixed sleeve 5 away from the moving seat 92. A collar 9 is installed at one end of the connecting part 91 away from the moving seat 92, and the collar 9 is inserted into the fixed sleeve 5. The connecting part 91 passes through the slot 51 and is threadedly connected to insert into the moving seat 92, and the moving seat 92 is driven to move synchronously by pulling the collar 9 up and down.

[0024] A pressing sleeve 6 is installed at the bottom of the fixed sleeve 5. The pressing sleeve 6 is threadedly connected and inserted into the fixed sleeve 5. The upper end of the pressing sleeve 6 abuts against a spring 61, and the upper end of the spring 61 abuts against the bottom of the moving seat 92. Since the fixed sleeve 5 and the pressing sleeve 6 are both located below the diverter plate 1, the fixed sleeve 5 and the pressing sleeve 6 are exposed. The heat dissipation of the fixed sleeve 5 and the pressing sleeve 6 is carried out through the heat dissipation wind outside the connection part of the fixed sleeve 5 and the pressing sleeve 6, so as to reduce the phenomenon that the threads of the fixed sleeve 5 and the pressing sleeve 6 are greatly deformed due to the high temperature generated during the injection of glue.

[0025] The movable seat 92 includes an insertion rod 921 at the upper end, the insertion rod 921 is arranged on both sides of the movable seat 92, and the insertion rod 921 passes through the sleeve 4 upward and extends out of the upper end of the sleeve 4. A movable ring 7 is fixedly installed on the top of the insertion rod 921, and the movable ring 7 is a ring-shaped structure, and the outer diameter of the movable ring 7 is smaller than the mounting hole 12. A plug hole is provided at the bottom of the movable ring 7, and the top of the insertion rod 921 is inserted into the plug hole of the movable ring 7 by interference fit.

[0026] Combination Figure 2 , Figure 3 The moving ring 7 is provided with a through hole 71, and the through hole 71 passes through the moving ring 7 from top to bottom. The moving ring 7 is also provided with a groove body 1 72 and a groove body 2 73, and the groove body 1 72 and the groove body 2 73 are evenly distributed along the circumferential direction of the inner wall of the moving ring 7, and the groove body 2 73 and the groove body 1 72 are staggered in the circumferential direction of the moving ring 7. The groove body 2 73 is located at the upper end of the moving ring 7, and the groove body 2 73 passes through the top of the moving ring 7. The groove body 1 72 passes through the moving ring 7 from top to bottom.

[0027] like Figure 1 , Figure 2 As shown, the nozzle body 3 is also included, and the nozzle body 3 passes through the sleeve 4, the fixed sleeve 5, the pressing sleeve 6, the spring 61, and the moving ring 7. A pad 23 is installed at the bottom of the insert sleeve 2. The pad 23 is made of copper. The upper end surface of the nozzle body 3 abuts and fits the pad 23 to form a seal. The nozzle body 3 is provided with a second glue inlet channel 31, which is connected to the plug hole 21 from top to bottom. The valve needle inserted into the plug hole 21 can be inserted into the second glue inlet channel 31 to control the opening and closing of the discharge port at the bottom of the nozzle body 3.

[0028] like Figure 2 , Figure 4 As shown, the nozzle body 3 is equipped with a fixing ring 8, which is an annular structure, and the fixing ring 8 is threadedly connected and inserted into the nozzle body 3. The fixing ring 8 can pass through the sleeve 4, the fixing sleeve 5, the pressing sleeve 6, and the moving ring 7. The outer diameter of the fixing ring 8 is smaller than the inner diameter of the sleeve 4, the fixing sleeve 5, and the pressing sleeve 6. The outer diameter of the fixing ring 8 is the same as the inner diameter of the moving ring 7. A boss 81 is provided on the outer wall of the fixing ring 8. The boss 81 can pass through the groove body 1 72, and the boss 81 can be inserted into the groove body 2 73. There are multiple bosses 81 evenly distributed along the circumference of the outer periphery of the fixing ring 8. The groove body 1 72 and the groove body 2 73 are all arranged one by one with the boss 81, and multiple bosses 81 are inserted into the groove body 1 72 or the groove body 2 73 at the same time.

[0029] The movable ring 7 abuts against the lower end of the fixed ring 8 under the action of the spring 61 , so that the upper end surface of the nozzle body 3 abuts against and is in close contact with the lower end surface of the insert tube 2 .

[0030] The disassembly and assembly method of the connection structure between the nozzle and the manifold is as follows:

[0031] S1 Disassembly

[0032] ① Such as Figure 2 As shown, the pressing sleeve 6 is loosened downward to reduce the compression of the spring 61. The reduced resistance of the spring 61 makes it easier for the operator to pull down the collar 9, hold the nozzle body 3 to keep its position fixed, pull down the collar 9, and the collar 9 drives the movable ring 7 to move downward, so that the boss 81 is separated from the second groove body 73 up and down.

[0033] By providing the collar 9, the distance that the pressing sleeve 6 needs to descend when being loosened can be reduced, thereby improving the operating efficiency.

[0034] ② Slightly rotate the nozzle body 3 (rotation angle 5°-10°) and then loosen the ring 9 to make the upper end of the movable ring 7 bear against the bottom surface of the fixed ring 8, slightly pull down and rotate the nozzle body 3, when the boss 81 moves to be aligned with the groove body 72, the groove body 72 automatically inserts into the boss 81, and then pull the nozzle body 3 downward to separate the nozzle body 3 from the diverter plate 1.

[0035] S2 Installation

[0036] ① Pull down the sleeve ring 9, insert the nozzle body 3 from the bottom of the pressing sleeve 6, and the boss 81 passes through the groove body 72 so that the fixed ring 8 is located above the movable ring 7.

[0037] ② Slightly rotate the nozzle body 3, loosen the collar 9, and continue to rotate the nozzle body 3. When the boss 81 moves to align with the second groove body 73 in the upper and lower directions, the second groove body 73 is automatically inserted into the boss 81.

[0038] ③ Tighten the pressing sleeve 6 upward, and move the pressing sleeve 6 upward to make the movable ring 7 drive the fixed ring 8 and the nozzle body 3 to move upward synchronously. When the upper end of the nozzle body 3 abuts against the bottom of the insert 2, continue to tighten the pressing sleeve 6 upward. By moving the pressing sleeve 6 upward, the nozzle body 3 is pressed against the gasket 23 to achieve a better sealing effect.

[0039] Through the coordinated operation of the pressing sleeve 6 and the ring 9, the lifting and lowering distance caused by the screwing of the ring 9 is reduced, thereby improving the operating efficiency. Meanwhile, by controlling the pressing sleeve 6 to be loosened downward, the ring 9 can also be easily pulled down by the operator, thereby ensuring that the spring 61 provides sufficient supporting force to enable the nozzle body 3 to press against the gasket 23, and also facilitating the rapid separation of the nozzle body 3 from the diverter plate 1 when disassembling, thereby improving the convenience of disassembly and installation of the nozzle body 3.

[0040] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A connection structure between a nozzle and a diverter plate, characterized in that: The invention comprises a diverter plate (1), a nozzle body (3), and a spring (61); the diverter plate (1) is provided with a mounting hole (12); a sleeve (4) is mounted in the mounting hole (12); a fixed sleeve (5) is mounted at the bottom of the sleeve (4); a movable seat (92) is mounted on the fixed sleeve (5); the movable seat (92) is inserted into the fixed sleeve (5); the movable seat (92) can move up and down; a pressing sleeve (6) is mounted at the bottom of the fixed sleeve (5); the upper end of the pressing sleeve (6) abuts against the spring (61); the upper end of the spring (61) abuts against the bottom of the movable seat (92); the movable seat (92) comprises an insertion rod (921) at the upper end; the insertion rod (921) passes through the sleeve (4) and extends out of the upper end of the sleeve (4); a movable ring (7) is fixedly mounted on the top of the insertion rod (921); The nozzle body (3) passes through the sleeve (4), the fixed sleeve (5), the pressing sleeve (6) and the movable ring (7); the nozzle body (3) is equipped with a fixing ring (8); the fixing ring (8) can pass through the sleeve (4), the fixed sleeve (5), the pressing sleeve (6) and the movable ring (7); the mounting hole (12) is also equipped with an insert sleeve (2); the insert sleeve (2) is located above the nozzle body (3); the movable ring (7) abuts against the lower end of the fixing ring (8) under the action of the spring (61), so that the upper end surface of the nozzle body (3) abuts against and fits the lower end surface of the insert sleeve (2); The outer wall of the fixed ring (8) is provided with a boss (81), and the movable ring (7) is provided with a groove body 1 (72) and a groove body 2 (73). The boss (81) can pass through the groove body 1 (72), and the groove body 2 (73) is located at the upper end of the movable ring (7). The groove body 2 (73) and the groove body 1 (72) are staggered in the circumferential direction of the movable ring (7), and the boss (81) can be inserted into the groove body 2 (73).

2. A connection structure between a nozzle and a manifold according to claim 1, characterized in that: The outer diameter of the fixed ring (8) is smaller than the inner diameters of the sleeve (4), the fixed sleeve (5) and the pressing sleeve (6); the outer diameter of the fixed ring (8) is the same as the inner diameter of the movable ring (7); the bosses (81) are evenly distributed along the circumference of the outer periphery of the fixed ring (8); and the groove body 1 (72) and the groove body 2 (73) are both arranged in a one-to-one correspondence with the bosses (81).

3. The connection structure between a nozzle and a manifold according to claim 1, characterized in that: The first groove body (72) passes through the movable ring (7) from top to bottom, and the second groove body (73) passes through the top of the movable ring (7).

4. The connection structure between a nozzle and a manifold according to claim 1, characterized in that: Connecting components (91) are fixedly mounted on both sides of the movable seat (92), and the connecting components (91) pass through and extend out of the side wall of the fixed sleeve (5) on the side away from the movable seat (92).

5. The connection structure between a nozzle and a manifold according to claim 4, characterized in that: A collar (9) is installed at one end of the connecting component (91) away from the movable seat (92), and the collar (9) is sleeved into the fixed sleeve (5).

6. The connection structure between a nozzle and a manifold according to claim 1, characterized in that: The pressing sleeve (6) is threadedly connected and inserted into the fixing sleeve (5).

7. The connection structure between a nozzle and a manifold according to claim 1, characterized in that: The sleeve (4) comprises a protruding portion (41) located at the bottom, the protruding portion (41) is inserted into the top of the fixing sleeve (5), and the protruding portion (41) is threadedly connected to the fixing sleeve (5).

8. The connection structure between a nozzle and a manifold according to claim 4, characterized in that: The fixing sleeve (5) is provided with a slot (51), and the connecting component (91) passes through the slot (51).

9. A method for disassembling and assembling a connection structure between a nozzle and a manifold according to any one of claims 1 to 8, characterized in that: Includes S1 disassembly: ① Loosen the pressing sleeve (6) downward to reduce the compression of the spring (61), hold the nozzle body (3) to keep its position fixed, pull down the collar (9), and the collar (9) drives the moving ring (7) to move downward, so that the boss (81) and the second groove body (73) are separated from each other; ② After slightly rotating the nozzle body (3), loosen the sleeve ring (9) so that the upper end of the movable ring (7) is against the bottom surface of the fixed ring (8), and the nozzle body (3) is slightly pulled down and rotated. When the boss (81) moves to align with the groove body (72) up and down, the groove body (72) automatically fits into the boss (81). At this time, pull the nozzle body (3) downward to separate the nozzle body (3) from the diverter plate (1); Also includes S2 installation: ① Pull down the sleeve ring (9), insert the nozzle body (3) from the bottom of the pressing sleeve (6), and let the boss (81) pass through the groove body (72) so that the fixed ring (8) is located above the movable ring (7); ② Slightly rotate the nozzle body (3), loosen the collar (9), and continue to rotate the nozzle body (3). When the boss (81) moves to align with the second groove body (73) in the vertical direction, the second groove body (73) automatically fits into the boss (81); ③ The pressing sleeve (6) is tightened upwards, and the position of the pressing sleeve (6) is moved upwards so that the movable ring (7) drives the fixed ring (8) and the nozzle body (3) to move upwards synchronously, so that the upper end of the nozzle body (3) abuts against the bottom of the insert tube (2).

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