Injection molding machine for suction nozzle cover

Abstract

The utility model belongs to the technical field of injection molding machines, and particularly relates to a suction nozzle cover injection molding machine, which adopts two groups of movable molds which are symmetrically fixed left and right, so that in the injection molding process, after one group of movable molds and a fixed mold finish mold closing injection molding, the other group of movable molds can be completely cooled, and after a suction nozzle cover to be machined is demolded, the injection molding is finished. And the position of the completely cooled movable mold can be exchanged with the position of the other group of movable molds, so that the cooling effect during injection molding of the suction nozzle cover is improved, the waiting time in the production process is greatly shortened, the production efficiency is remarkably improved, and the requirement of large-scale production can be met.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molding machines, and particularly relates to a nozzle cover injection molding machine. Background Art

[0002] Currently, the cooling process is a key factor affecting production efficiency during the injection molding process of nozzle covers. Existing nozzle cover injection molding machines, after completing injection molding, face challenges due to the relatively thick walls and complex shapes of nozzle covers, which may include threads and sealing protrusions. While these features ensure the functionality of the nozzle covers, they also increase the difficulty of heat dissipation and require a long cooling time. After completing one injection, the injection molding machine must wait a long time before the next injection can begin. This reduces the utilization rate of the injection molding machine and the number of nozzle covers produced per unit time, significantly reducing production efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide a nozzle cover injection molding machine for solving the problems mentioned in the background technology.

[0004] In order to achieve the above technical objectives, the technical solutions adopted by this utility model are as follows:

[0005] A nozzle cover injection molding machine comprises an injection molding machine body, an injection molding mechanism is installed inside the injection molding machine body, the injection molding mechanism comprises a mounting plate and a sliding plate which can move left and right, a fixed mold is installed on the left side of the mounting plate, a plurality of nozzle cover inner molds are provided on the upper side of the fixed mold, a threaded groove is provided on the upper side of the nozzle cover inner mold, a movable mold matching the fixed mold is installed on the right side of the sliding plate, a plurality of nozzle cover outer molds matching the nozzle cover inner molds are provided on the upper side of the movable mold, the number of the movable molds is two groups and they are fixed symmetrically left and right, a front and rear distributed bracket is installed on the right side of the sliding plate, a rotating shaft rotatably connected to the bracket is fixed on the front and rear sides of the two groups of movable molds, a cooling component and a control component for controlling the rotation of the rotating shaft are provided on the upper side of the sliding plate.

[0006] The cam is fixedly provided with an L-shaped pull ear on the upper side of the sliding plate, and a pull hook is fixedly provided with the L-shaped pull ear on the upper side of the mounting plate, and the sliding plate is provided with a control hole that does not interfere with the rack, the L-shaped pull ear, and the pull hook. A rotating rod is mounted on the upper side of the sliding plate, and a gear matching the rack is mounted on the middle part of the rotating rod. A circular cavity is provided in the middle part of the rotating rod, and a ratchet fixedly connected to the rotating rod is hingedly provided with a pawl matching the ratchet. The side surface of the pawl is provided with a spring sheet fixed to the side wall of the circular cavity. The front side of the rotating rod and the upper side of the rotating shaft of the front are both connected to the sprocket. The chain is connected to the two sprockets by

[0007] The cooling assembly includes two front and rear rotary joints respectively fixed to the corresponding brackets. The middle part of the rotating shaft is a hollow structure. The rotating end of the rotary joint is connected to the middle pipe of the rotating shaft. A front and rear connected water channel is opened on the upper side of each movable mold. The water channel matches the outer mold of the nozzle cover, and the front and rear sides of the water channel are respectively connected to the front and rear middle pipes of the rotating shaft.

[0008] Four positioning holes are evenly opened on the left side of the fixed mold, and positioning rods matching the positioning holes are fixed on the side of each group of the movable molds. The positioning holes are generally in the shape of a truncated cone with the left side larger and the right side smaller.

[0009] A friction disc is fixed on the outer side of the rotating shaft at the rear side, an elastic telescopic rod is installed on the side of the bracket at the rear side, and a friction block abutting against the side of the friction disc is fixed on the telescopic end of the elastic telescopic rod.

[0010] The injection molding machine uses two sets of movable molds that are fixed symmetrically on the left and right. This design allows for complete cooling of the other set of movable molds during the injection process after one set of movable molds and the fixed mold have completed the injection molding process. After the finished nozzle cover is demoulded, the completely cooled movable mold can be swapped with the other set of movable molds, thereby improving the cooling effect during the injection molding of the nozzle cover, greatly reducing the waiting time in the production process, and significantly improving production efficiency, which can meet the needs of large-scale production. The control component uses mechanical transmission such as L-shaped pull ears, hooks, racks, gears, and ratchet mechanisms, so that when the movable mold and the fixed mold are in the open state, it can automatically drive the movable mold to flip, thereby realizing automatic control of the rotation of the movable mold. The operation difficulty and labor intensity are reduced, and the degree of automation of production is improved. The water channel matches the outer mold of the nozzle cover and is equipped with a rotary joint, so that the movable mold can rotate freely while ensuring that the cooling water can evenly cool all parts of the nozzle cover. It can also ensure that the cooling water inside the movable mold water channel flows quickly, further ensuring the cooling effect. During the mold closing process of the injection molding machine, the positioning rod is inserted into the positioning hole to ensure the accurate alignment of the movable mold and the fixed mold. At the same time, the positioning hole is a frustum with a larger left and a smaller right shape to further facilitate the insertion of the positioning rod, thereby improving the reliability of the mold closing. The cooperation between the friction disk and the friction block prevents the movable mold from rotating accidentally as a whole after the rack moves to the rightmost stroke, thereby ensuring the stability of the movable mold rotation angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention can be further described by way of non-limiting embodiments given in the accompanying drawings.

[0012] Figure 1 It is a structural diagram of the present utility model.

[0013] Figure 2 It is a structural diagram of the injection molding mechanism in this utility model.

[0014] Figure 3 It is a schematic cross-sectional structure diagram of the injection molding mechanism in the present utility model.

[0015] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0016] Figure 5 for Figure 3 Schematic diagram of the enlarged structure at point B in the middle.

[0017] Figure 6 It is a schematic diagram of the cross-sectional structure of the movable mold in the utility model.

[0018] Injection molding machine body 1, mounting plate 2, sliding plate 3, fixed mold 4, nozzle cover inner mold 5, thread groove 6, movable mold 7, nozzle cover outer mold 8, ratchet 9, bracket 10, rotating shaft 11, slide bar 12, rack 13, L-shaped pull ear 14, draw hook 15, control hole 16, rotating rod 17, gear 18, circular cavity 19, pawl 20, spring sheet 21, sprocket 22, chain 23, return spring 24, rotary joint 25, water channel 26, positioning hole 27, positioning rod 28, friction disk 29, elastic telescopic rod 30, friction block 31. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1-6 As shown, a nozzle cover injection molding machine includes an injection molding machine body 1, an injection molding mechanism is installed on the inner side of the injection molding machine body 1, the injection molding mechanism includes a mounting plate 2 and a sliding plate 3 that can move left and right, a fixed mold 4 is installed on the left side of the mounting plate 2, a plurality of nozzle cover inner molds 5 are provided on the upper side of the fixed mold 4, a threaded groove 6 is opened on the upper side of the nozzle cover inner mold 5, a movable mold 7 matching the fixed mold 4 is installed on the right side of the sliding plate 3, a plurality of nozzle cover outer molds 8 matching the nozzle cover inner mold 5 are provided on the upper side of the movable mold 7, the number of movable molds 7 is two groups and they are fixed symmetrically on the left and right, a front and rear distributed bracket 10 is installed on the right side of the sliding plate 3, the front and rear sides of the two groups of movable molds 7 are commonly fixed with a rotating shaft 11 rotatably connected to the bracket 10, a cooling component and a control component for controlling the rotation of the rotating shaft 11 are provided on the upper side of the sliding plate 3.

[0021] When the injection molding machine is in use, since there is a thread groove 6 on the upper inner side for casting the inner thread of the nozzle cover, the nozzle cover after injection molding will be demoulded with the nozzle cover outer mold 8 on the upper side of the movable mold 7 first, and each time the movable mold 7 is separated from the fixed mold 4, the control component controls the movable mold 7 to flip once so that the left and right groups of movable molds 7 are swapped, and the cooling component is used to cool the nozzle cover outer mold 8 on the upper side of the movable mold 7.

[0022] The injection molding machine adopts two sets of movable molds 7 that are fixed symmetrically on the left and right. This design allows that during the injection molding process, when one set of movable molds 7 and the fixed mold 4 complete the mold closing and injection molding, the other set of movable molds 7 can be completely cooled. After the processed nozzle cover is demoulded, the completely cooled movable mold 7 can be swapped with the other set of movable molds 7, thereby improving the cooling effect during the injection molding of the nozzle cover, greatly reducing the waiting time in the production process, significantly improving production efficiency, and being able to meet the needs of large-scale production.

[0023] A slide bar 12 is fixed on the upper left side of the sliding plate 3, and a rack 13 is installed on the upper side of the slide bar 12 for sliding left and right. An L-shaped pull ear 14 is fixed on the upper side of the rack 13, and a hook 15 matching the L-shaped pull ear 14 is fixed on the upper side of the mounting plate 2. A control hole 16 that does not interfere with the rack 13, the L-shaped pull ear 14, and the hook 15 is opened on the upper side of the sliding plate 3. A rotating rod 17 is rotatably installed on the left side of the sliding plate 3. A gear 18 matching the rack 13 is rotatably installed in the middle of the rotating rod 17. A circular cavity 19 is opened in the middle of the gear 18. A ratchet 9 fixedly connected to the rotating rod 17 is installed on the inside of the cavity 19, and a pawl 20 hinged to the gear 18 and matching the ratchet 9 is installed on the inside of the circular cavity 19. A spring sheet 21 fixed to the side wall of the circular cavity 19 is installed on the side of the pawl 20. The front side of the rotating rod 17 and the upper side of the front rotating shaft 11 are both transmission-connected with a sprocket 22, and a chain 23 is transmission-connected between the two sprockets 22. A return spring 24 is provided on the outside of the slide rod 12, and the left and right ends of the return spring 24 are respectively fixedly connected to the left side of the slide rod 12 and the rack 13.

[0024] When the movable mold 7 and the fixed mold 4 are in the closed state, the return spring 24 causes the rack 13 to be located at the leftmost stroke of the slide bar 12. When the movable mold 7 and the fixed mold 4 are separated, the sliding plate 3 moves to the left. After moving to a certain distance, the L-shaped pull ear 14 abuts against the draw hook 15. At this time, the rack 13 drives the gear 18 to rotate. Under the action of the ratchet 9 and the pawl 20, the movable mold 7 is turned over through the sprocket 22 and the chain 23. When the movable mold 7 and the fixed mold 4 are closed again, the sliding plate 3 moves to the right. Subsequently, the L-shaped pull ear 14 and the draw hook 15 separate and do not interact with each other. At this time, the return spring 24 drives the rack 13 to slowly reset, and the rack 13 drives the gear 18 to reverse. At this time, the ratchet 9 will not drive the rotating rod 17 and the rotating shaft 11 to rotate.

[0025] The control component is driven by mechanical transmission such as the L-shaped pull ear 14, the hook 15, the rack 13, the gear 18, and the ratchet mechanism, so that when the movable mold 7 and the fixed mold 4 are in the mutually opened state, the movable mold 7 can be automatically driven to flip, thereby realizing automatic control of the rotation of the movable mold 7, reducing the difficulty of operation and labor intensity, and improving the degree of automation of production.

[0026] The cooling assembly includes two front and rear rotary joints 25 respectively fixed to the corresponding brackets 10. The middle part of the rotating shaft 11 is a hollow structure. The rotating end of the rotary joint 25 is connected to the middle pipe of the rotating shaft 11. A front and rear connected water channel 26 is opened on the upper side of each movable mold 7. The water channel 26 matches the outer mold 8 of the suction nozzle cover, and the front and rear sides of the water channel 26 are respectively connected to the middle pipes of the rotating shaft 11 on the front and rear sides.

[0027] The rotary joint 25 is a conventional pipe connection device that allows the connected pipes to rotate relative to each other when conveying gas, liquid, or oil. One end of the rotary joint 25 is connected to the inlet pipe of the external water cooling system, and the other end is connected to the outlet pipe of the external water cooling system. The water channel 26 matches the nozzle cover outer mold 8 and cooperates with the rotary joint 25, allowing the movable mold 7 to rotate freely while ensuring that the cooling water can evenly cool all parts of the nozzle cover. It also ensures that the cooling water in the water channel 26 of the movable mold 7 flows quickly, further ensuring the cooling effect.

[0028] Four positioning holes 27 are evenly opened on the left side of the fixed mold 4. A positioning rod 28 matching the positioning holes 27 is fixed on the side of each group of movable molds 7. The positioning holes 27 are generally in the shape of a truncated cone with a larger left side and a smaller right side.

[0029] A friction disc 29 is fixed to the outside of the rear rotating shaft 11 , and an elastic telescopic rod 30 is installed on the side of the rear bracket 10 . A friction block 31 abutting against the side of the friction disc 29 is fixed to the telescopic end of the elastic telescopic rod 30 .

[0030] During the mold closing process of the injection molding machine, the positioning rod 28 is inserted into the positioning hole 27 to ensure the accurate alignment of the movable mold 7 and the fixed mold 4. At the same time, the positioning hole 27 is in the shape of a cone with a larger left side and a smaller right side, which further facilitates the insertion of the positioning rod 28 and improves the reliability of the mold closing. The cooperation between the friction disk 29 and the friction block 31 prevents the movable mold 7 from rotating accidentally as a whole after the rack 13 moves to the rightmost stroke, thereby ensuring the stability of the rotation angle of the movable mold 7.

[0031] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by persons skilled in the art without departing from the spirit and technical principles disclosed herein shall be covered by the claims of the present invention.

Claims

1. A nozzle cover injection molding machine, comprising an injection molding machine body, characterized in that: An injection molding mechanism is installed inside the injection molding machine body, and the injection molding mechanism includes a mounting plate and a sliding plate that can move left and right. A fixed mold is installed on the left side of the mounting plate, and a plurality of suction nozzle cover inner molds are provided on the upper side of the fixed mold. A threaded groove is provided on the upper side of the suction nozzle cover inner mold. A movable mold matching the fixed mold is installed on the right side of the sliding plate, and a plurality of suction nozzle cover outer molds matching the suction nozzle cover inner molds are provided on the upper side of the movable mold. The number of the movable molds is two groups and they are fixed symmetrically on the left and right. Brackets distributed front and back are installed on the right side of the sliding plate, and a rotating shaft rotatably connected to the bracket is commonly fixed on the front and rear sides of the two groups of movable molds. A cooling component and a control component for controlling the rotation of the rotating shaft are provided on the upper side of the sliding plate.

2. The nozzle cover injection molding machine according to claim 1, characterized in that: The cam is fixedly provided with an L-shaped pull ear on the upper side of the sliding plate, and a pull hook is fixedly provided with the L-shaped pull ear on the upper side of the mounting plate, and the sliding plate is provided with a control hole that does not interfere with the rack, the L-shaped pull ear, and the pull hook. A rotating rod is mounted on the upper side of the sliding plate, and a gear matching the rack is mounted on the middle part of the rotating rod. A circular cavity is provided in the middle part of the rotating rod, and a ratchet fixedly connected to the rotating rod is hingedly provided with a pawl matching the ratchet. The side surface of the pawl is provided with a spring sheet fixed to the side wall of the circular cavity. The front side of the rotating rod and the upper side of the rotating shaft of the front are both connected to the sprocket. The chain is connected to the two sprockets by 3. The nozzle cover injection molding machine according to claim 2, characterized in that: The cooling assembly includes two front and rear rotary joints respectively fixed to the corresponding brackets. The middle part of the rotating shaft is a hollow structure. The rotating end of the rotary joint is connected to the middle pipe of the rotating shaft. A front and rear connected water channel is opened on the upper side of each movable mold. The water channel matches the outer mold of the nozzle cover, and the front and rear sides of the water channel are respectively connected to the front and rear middle pipes of the rotating shaft.

4. The nozzle cover injection molding machine according to claim 3, characterized in that: Four positioning holes are evenly opened on the left side of the fixed mold, and positioning rods matching the positioning holes are fixed on the side of each group of the movable molds. The positioning holes are generally in the shape of a truncated cone with the left side larger and the right side smaller.

5. The nozzle cover injection molding machine according to claim 4, characterized in that: A friction disc is fixed on the outer side of the rotating shaft at the rear side, an elastic telescopic rod is installed on the side of the bracket at the rear side, and a friction block abutting against the side of the friction disc is fixed on the telescopic end of the elastic telescopic rod.

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