Hot runner nozzle structure convenient to replace

Abstract

The utility model relates to the technical field of injection molds, in particular to a hot runner nozzle structure convenient to replace, which comprises a nozzle body, a hot runner plate is mounted at the top end of the nozzle body, fixing plates are mounted on two sides of the bottom end of the hot runner plate, and a rotating disc is mounted on one side of the outer wall of each fixing plate. A rotating shaft of the rotating disc is connected with a two-way threaded rod, two clamping blocks are installed on the surface of the two-way threaded rod in a threaded mode, and the other sides of the inner walls of the two fixing plates are fixedly connected with a fixing rod. The clamping block can move accurately and stably, so that it is ensured that the nozzle body can be firmly clamped during installation, the fixing precision and stability are improved, the position of the clamping block can be easily adjusted by rotating the rotating disc to drive the bidirectional threaded rod, and therefore rapid installation and disassembly of the nozzle body are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, concretely is a hot runner nozzle structure convenient to replace. BACKGROUND

[0002] Hot runner is a heating assembly system used in injection mold, which injects melted plastic particles into the cavity of the mold. Hot runner mold is a new structure that heats the runner and flow channel of traditional mold or three-plate mold, so that the runner and flow channel do not need to be removed during each molding. The hot runner system includes a hot nozzle, and the traditional hot nozzle is fastened by multiple fixed plates and screws. It is not easy to remove when damaged.

[0003] After searching, the Chinese patent document application number: 202023346019.1 discloses a hot runner nozzle structure convenient to replace, which includes a flow channel plate. The upper end surface of the flow channel plate is provided with a flow channel plate flow channel in the middle. The bottom end surface of the flow channel plate is provided with a mounting groove. The mounting groove is provided with a nozzle body. The nozzle body is provided with a nozzle flow channel. The upper end surface of the flow channel plate is provided with 'L' type limiting grooves on the left and right sides and the front and back sides. The top of the limiting groove is provided with a lifting assembly. When in use, the top end of the nozzle body is placed in the mounting groove at the bottom end of the flow channel plate. The first piston is driven downward by the lifting assembly. The first piston and the second piston are filled with hydraulic oil. When the first piston moves downward, the second piston is moved in the direction of the nozzle body by hydraulic oil. The clamping block on the second piston is clamped into the clamping groove on the nozzle body, thereby completing the fixed installation of the nozzle body.

[0004] However, the above-mentioned hot runner nozzle structure convenient to replace still has the following defects:

[0005] The cooperation precision of the clamping block and the clamping groove in the nozzle structure is high. If the cooperation is improper or the wear is serious, the clamping block may not be firmly clamped into the clamping groove, thereby affecting the fixing effect of the nozzle body. Therefore, we need a hot runner nozzle structure convenient to replace to solve the above-mentioned problems. INVENTION CONTENTS

[0006] The utility model aims at providing a hot runner nozzle structure convenient to replace. The relative movement of the clamping block is realized by the combination of the bidirectional threaded rod and the clamping block and the threaded transmission. The clamping block can move accurately and stably, thereby ensuring that the nozzle body can be firmly clamped during installation, improving the fixing precision and stability. The position of the clamping block can be easily adjusted by rotating the rotating disc to drive the bidirectional threaded rod, thereby realizing the quick installation and disassembly of the nozzle body.

[0007] To achieve the above object, the utility model provides the following technical scheme: A hot runner nozzle structure convenient to replace, including nozzle body, the top of nozzle body is installed hot runner plate, the bottom of hot runner plate both sides is installed fixed plate, the outer wall side of fixed plate is installed rotating disc, the rotating shaft of rotating disc is connected with two -way screw rod, one end of two -way screw rod passes through one of fixed plate and is rotatably installed in the inner wall of another fixed plate, the surface of two -way screw rod is equipped with two clamping blocks, the inner wall other side of two fixed plates is fixedly connected with fixed rod, one end of two clamping blocks is slidably installed in the surface of fixed rod, two clamping blocks relative motion.

[0008] Preferably, the top of the nozzle body is sleeved with a limiting sleeve, the bottom of the hot runner plate is provided with a limiting groove for installing the limiting sleeve, and the limiting sleeve is embedded in the inside of the limiting groove.

[0009] Preferably, the limiting sleeve is provided with a through hole around the side wall, the inner wall of the limiting groove and the upper end side wall of the nozzle body are provided with a placing groove, and the inside of the placing groove is provided with a reset assembly.

[0010] Preferably, the reset assembly comprises a damper, a reset spring and a ball, the damper is installed in the placing groove close to the limiting groove side, one side of the damper is connected with one end of the reset spring, the other end of the reset spring passes through the through hole and is connected with the surface of the ball, the ball is arranged outside the through hole and is embedded in the placing groove close to the nozzle body side.

[0011] Preferably, the outer surface of the nozzle body is embedded with a heating component on the left and right sides, and the inside of the heating component is provided with an electric heating wire.

[0012] Preferably, the inner wall of the clamping block is provided with a heat insulation layer, and the inner walls of the two clamping blocks are arc-shaped.

[0013] Preferably, the top of the hot runner plate is provided with a runner plate runner, the inside of the limiting sleeve is provided with a runner groove, and the inside of the nozzle body is provided with a nozzle runner, and the runner plate runner is in communication with the runner groove and the nozzle runner.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] 1. The utility model mainly through the combination of two -way screw rod and clamping block, and threaded drive realizes the relative motion of clamping block, so that clamping block can move accurately and stably, so as to ensure that nozzle body can be firmly clamped when installing, improve the precision and stability of fixed, and through rotating rotating disc drive two -way screw rod, the position of clamping block can be easily adjusted, so as to realize the quick installation and dismounting of nozzle body. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the three-dimensional structure schematic view of the utility model;

[0017] Figure 2 It is the structure schematic view of the clamping nozzle body of the utility model;

[0018] Figure 3 It is the sectional structure schematic view of the hot runner plate of the utility model;

[0019] Figure 4 It is the explosion structure schematic view inside the limiting sleeve of the utility model.

[0020] In the drawing: 1, hot runner plate; 101, runner plate runner; 2, nozzle body; 3, heating component; 4, nozzle runner; 5, fixed plate; 6, rotating disc; 601, two-way threaded rod; 602, fixed rod; 603, clamping block; 7, limiting sleeve; 701, runner groove; 702, through hole; 703, limiting groove; 8, damper; 801, return spring; 802, ball; 803, placing groove. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely below with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: a hot runner nozzle structure convenient to replace, including nozzle body 2, the top of nozzle body 2 is equipped with hot runner plate 1, and the bottom of hot runner plate 1 is equipped with fixed plate 5 on both sides, and the outer wall of fixed plate 5 is equipped with rotating disc 6 on one side, and the rotating shaft of rotating disc 6 is connected with two-way threaded rod 601, and one end of two-way threaded rod 601 passes through one of fixed plate 5 and is rotatably installed in the inner wall of another fixed plate 5, and two clamping blocks 603 are screw-mounted on the surface of two-way threaded rod 601, and the inner wall of two fixed plates 5 is fixedly connected with fixed rod 602 on the other side, and one end of two clamping blocks 603 is slidably installed on the surface of fixed rod 602, and two clamping blocks 603 are relatively moved;

[0023] In use, by utilizing the combination of the bidirectional threaded rod 601 and the clamping block 603, and the threaded transmission to realize the relative movement of the clamping block 603, the clamping block 603 can move accurately and stably, so as to ensure that the nozzle body 2 can be firmly clamped during installation, improve the accuracy and stability of the fixation, and through rotating the rotating disc 6 to drive the bidirectional threaded rod 601, the position of the clamping block 603 can be easily adjusted, so as to realize the quick installation and disassembly of the nozzle body 2.

[0024] The top end of the nozzle body 2 is sleeved with a limiting sleeve 7, and the bottom end of the hot runner plate 1 is provided with a limiting groove 703 for installing the limiting sleeve 7. The limiting sleeve 7 is embedded in the inside of the limiting groove 703. The cooperation of the limiting sleeve 7 and the limiting groove 703 provides an additional fixing point for the nozzle body 2, which helps to enhance the stability of the nozzle body 2 on the hot runner plate 1.

[0025] Through holes 702 are formed in the circumferential sidewalls of the limiting sleeve 7. The inner wall of the limiting groove 703 and the upper end sidewall of the nozzle body 2 are provided with a placing groove 803. A reset assembly is installed in the inside of the placing groove 803. The design of the through holes 702 makes the limiting sleeve 7 more easily sleeved on the nozzle body 2, and realizes quick installation through cooperation with the limiting groove 703.

[0026] The reset assembly includes a damper 8, a reset spring 801 and a ball 802. The damper 8 is installed in the placing groove 803 close to one side of the limiting groove 703. One side of the damper 8 is connected with one end of the reset spring 801. The other end of the reset spring 801 passes through the through hole 702 and is connected with the surface of the ball 802. The ball 802 is arranged outside the through hole 702 and is embedded in the placing groove 803 close to one side of the nozzle body 2. The damper 8 can absorb and disperse impact energy, reduce the vibration and shaking of the nozzle body 2, and the reset spring 801 provides necessary elastic force to ensure that the nozzle body 2 can be accurately reset.

[0027] Heating components 3 are embedded on the left and right sides of the outer surface of the nozzle body 2. The inside of the heating component 3 is installed with an electric heating wire. The heating components 3 are uniformly distributed on the left and right sides of the outer surface of the nozzle body 2, which ensures that the nozzle body 2 is evenly heated, helps to reduce the temperature gradient in the nozzle, and prevents material deformation or damage caused by local overheating.

[0028] The inner wall of the clamping block 603 is provided with a heat insulation layer, and the inner walls of the two clamping blocks 603 are arc-shaped. The heat insulation layer of the inner wall of the clamping block 603 can effectively block the transfer of heat and reduce the influence of the heat generated by the nozzle body 2 during work on the surrounding environment.

[0029] The top end of the hot runner plate 1 is provided with a runner plate runner 101, the inside of the limiting sleeve 7 is provided with a runner groove 701, the inside of the nozzle body 2 is provided with a nozzle runner 4, the runner plate runner 101 is communicated with the runner groove 701 and the nozzle runner 4, the communication design between the runner plate runner 101, the runner groove 701 and the nozzle runner 4 ensures the smooth flow of the plastic melt in the hot runner system, reduces the resistance and pressure loss of the fluid in the flow process, and improves the efficiency and stability of the fluid flow.

[0030] Although the embodiments of the utility model have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A hot runner nozzle structure for easy replacement, comprising a nozzle body (2), characterized in that: The top end of the nozzle body (2) is provided with a hot runner plate (1), the bottom end of the hot runner plate (1) is provided with a fixed plate (5) on both sides, the outer wall of the fixed plate (5) is provided with a rotating disc (6) on one side, the rotating shaft of the rotating disc (6) is connected with a bidirectional threaded rod (601), one end of the bidirectional threaded rod (601) penetrates through one of the fixed plates (5) and is rotatably connected to the inner wall of the other fixed plate (5), two clamping blocks (603) are threadedly connected to the surface of the bidirectional threaded rod (601), the inner wall of the two fixed plates (5) is fixedly connected with a fixed rod (602) on the other side, one end of the two clamping blocks (603) is slidably connected to the surface of the fixed rod (602), and the two clamping blocks (603) move relatively.

2. A hot runner nozzle structure for easy replacement according to claim 1, characterized in that: The top end of the nozzle body (2) is provided with a limiting sleeve (7), and the bottom end of the hot runner plate (1) is provided with a limiting groove (703) for mounting the limiting sleeve (7), and the limiting sleeve (7) is embedded in the inside of the limiting groove (703).

3. A hot runner nozzle structure for easy replacement according to claim 2, characterized in that: The four circumferential side walls of the limiting sleeve (7) are provided with through holes (702), the inner wall of the limiting groove (703) and the upper end side wall of the nozzle body (2) are provided with a placing groove (803), and the inside of the placing groove (803) is provided with a reset assembly.

4. A hot runner nozzle structure for easy replacement according to claim 3, wherein: The reset assembly comprises a damper (8), a reset spring (801) and a ball (802), the damper (8) is installed in the placing groove (803) close to one side of the limiting groove (703), one side of the damper (8) is connected with one end of the reset spring (801), the other end of the reset spring (801) penetrates through the through hole (702) and is connected with the surface of the ball (802), and the ball (802) is arranged outside the through hole (702) and is embedded in the placing groove (803) close to the nozzle body (2).

5. A hot runner nozzle structure for easy replacement according to claim 4, wherein: The outer surface of the nozzle body (2) is provided with a heating component (3) on both sides, and the inside of the heating component (3) is provided with an electric heating wire.

6. A hot runner nozzle structure for easy replacement according to claim 5, characterized in that: The inner wall of the clamping block (603) is provided with a heat insulation layer, and the inner walls of the two clamping blocks (603) are arc-shaped.

7. A hot runner nozzle structure for easy replacement according to claim 6, characterized in that: The top end of the hot runner plate (1) is provided with a runner plate runner (101), the inside of the limiting sleeve (7) is provided with a runner groove (701), and the inside of the nozzle body (2) is provided with a nozzle runner (4), and the runner plate runner (101) is in communication with the runner groove (701) and the nozzle runner (4).

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