Hot runner structure capable of preventing nozzle core from loosening

Abstract

The utility model discloses a hot runner structure capable of preventing a nozzle core from loosening, which comprises a hot nozzle main body, the hot nozzle main body is of a cylindrical structure, a nozzle core is arranged at the lower end of the hot nozzle main body, and a clamping structure is arranged in the hot nozzle main body. And the clamping structure is provided with a clamping groove which is clamped and matched with the clamping block, so that the nozzle core and the hot nozzle main body are quickly clamped and butted. According to the hot runner structure capable of preventing the nozzle core from loosening, the clamping groove is formed in the inner wall of the hot nozzle main body, the clamping groove is of a connected two-section structure, one section of the clamping groove penetrates through the lower surface of the hot nozzle main body, and the nozzle core and the hot nozzle main body can be quickly butted and clamped through clamping of the clamping block on the outer surface of the nozzle core and the clamping groove; and the two-section clamping groove can avoid displacement of the nozzle core after connection.

Description

Technical Field

[0001] The utility model relates to the technical field of hot runners, in particular to a hot runner structure that prevents a nozzle core from loosening. Background Art

[0002] Hot runner refers to a technology used in injection molds. The hot runner system transports molten plastic material from the nozzle of the injection molding machine to the various cavities of the mold through a heated runner. The hot runner mainly consists of a hot nozzle connected to the manifold and a nozzle core connected to the hot nozzle.

[0003] During the routine installation of current hot runner devices, the nozzle core is generally connected to the bottom of the hot nozzle using threads. After long-term use, the threads are affected by factors such as vibration and temperature changes, and the threaded connection may become loose, which will affect the coaxiality of the hot nozzle and the nozzle core, causing instability in the flow of the plastic melt and affecting the quality of the injection molded product. Utility Model Content

[0004] The purpose of the present invention is to provide a hot runner structure that prevents the nozzle from loosening. In this device, the nozzle and the nozzle body are engaged by a clamping block, and the nozzle is fixed by a fixing member to solve the problems raised in the above-mentioned background art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a hot runner structure that prevents the nozzle core from loosening, comprising a hot nozzle body, the hot nozzle body being a cylindrical structure, a nozzle core being provided at the lower end of the hot nozzle body, a snap-fit ​​structure being provided inside the hot nozzle body, and a snap-fit ​​structure being provided with a snap-fit ​​groove and a snap-fit ​​block to achieve rapid snap-fit ​​connection between the nozzle core and the hot nozzle body.

[0006] Preferably, the locking structure includes a card slot, which is arranged on the inner wall of the hot nozzle body, and the card slot is a two-section structure, wherein the end of one section of the card slot passes through the lower surface of the hot nozzle body and is open, and the end of the other section of the card slot is located inside the hot nozzle body, and the two sections of the card slot are connected by grooves of equal width, and the two sections of the card slot and the connecting groove together constitute a slide groove, and there are 4 slide grooves arranged in a ring on the inner wall of the hot nozzle body.

[0007] By adopting the above technical solution, the hot nozzle body and the nozzle core can be quickly connected by utilizing the snap-fit ​​structure.

[0008] Preferably, the inner wall of the card slot is slidably connected with a card block, the card block is a cylindrical structure, and the card block is fixedly installed on the outer surface of the nozzle core, and four card blocks are arranged in an annular manner on the outer surface of the nozzle core.

[0009] By adopting the above technical solution, the nozzle core can be quickly inserted into the nozzle body by engaging the clamping block on the surface of the nozzle core with the clamping groove.

[0010] Preferably, a fixing structure is provided on the outer surface of the hot nozzle body, and the fixing structure is provided with a fixing block and a connecting block to further lock and fix the nozzle core.

[0011] By adopting the above technical solution, the nozzle core can be further locked and fixed by utilizing the fixing structure.

[0012] Preferably, the fixing structure includes a connecting ring, which is a circular ring structure with a thread on the inner surface. The connecting ring is threadedly connected to the outer surface of the hot nozzle body. A fixing block is fixedly installed on the lower surface of the connecting ring, and the fixing block is a cylindrical structure that passes through from top to bottom.

[0013] By adopting the above technical solution, the movement of the connecting ring on the outer surface of the nozzle body can drive the fixed block to move.

[0014] Preferably, the lower surface of the fixed block contacts the connecting block, the connecting block is a fan-shaped structure, and the connecting block is fixedly mounted on the outer surface of the nozzle core. The outer surface of the nozzle core is annularly provided with four connecting blocks, and the radius of the connecting block is greater than the radius of the fixed block.

[0015] By adopting the above technical solution, the connecting block on the outer surface of the nozzle core can be locked by using the fixing block.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the hot runner structure that prevents the nozzle from loosening:

[0017] 1. This device features a two-part slot on the inner wall of the nozzle body. One part of the slot extends through the bottom surface of the nozzle body. A block on the nozzle's outer surface engages the slot to quickly connect the nozzle to the nozzle body. The two-part slot prevents displacement of the nozzle after connection.

[0018] 2. In this device, a connecting ring is threadedly connected to the outer surface of the nozzle body, and a fixing block is connected to the surface of the connecting ring. The movement of the connecting ring on the outer surface of the nozzle body can realize the movement of the fixing block, and the nozzle core can be locked by squeezing the fixing block and the connecting block on the nozzle core surface;

[0019] 3. The hot nozzle body and the nozzle core of this device are engaged with each other by means of a clamping block and a clamping groove, which prevents the thread from wearing out and loosening after long-term use. In addition, the clamping connection between the hot nozzle body and the nozzle core allows for quick replacement of the nozzle core. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the connecting ring and the fixing block of the utility model;

[0022] Figure 3 This is a bottom view of the structure of the nozzle body and nozzle core of the utility model;

[0023] Figure 4 This is a schematic diagram of the front cross-section structure of the hot nozzle main body of the utility model;

[0024] Figure 5 This is a schematic diagram of the hot nozzle body and the card slot structure of the utility model;

[0025] Figure 6 This is a schematic diagram of the nozzle core and connecting block structure of the utility model.

[0026] In the figure: 1. Nozzle body; 2. Nozzle core; 3. Slot; 4. Clamping block; 5. Connecting ring; 6. Fixing block; 7. Connecting block. DETAILED DESCRIPTION

[0027] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0028] See also Figures 1-6 The utility model provides a technical solution: a hot runner structure for preventing the nozzle core from loosening, comprising a hot nozzle body 1, a nozzle core 2, a clamping groove 3, a clamping block 4, a connecting ring 5, a fixing block 6, and a connecting block 7.

[0029] The hot nozzle body 1 is a cylindrical structure, and a nozzle core 2 is provided at the lower end of the hot nozzle body 1. A locking structure is provided inside the hot nozzle body 1, and a locking groove 3 is provided in the locking structure to engage with the locking block 4 to realize rapid locking and docking between the nozzle core 2 and the hot nozzle body 1. The locking structure includes a locking groove 3, which is provided on the inner wall of the hot nozzle body 1, and the locking groove 3 is a two-section structure, wherein the end of one section of the locking groove 3 passes through the lower surface of the hot nozzle body 1 and is open, and the end of the other section of the locking groove 3 is located inside the hot nozzle body 1. The two sections of the locking groove 3 are connected by grooves of equal width, and the two sections of the locking groove 3 and the connecting groove together constitute a slide groove, and the slide groove is annularly provided with 4 pieces on the inner wall of the hot nozzle body 1, and the inner wall of the locking groove 3 is slidably connected with a locking block 4, which is a cylindrical structure, and the locking block 4 is fixedly mounted on the outer surface of the nozzle core 2, and the locking block 4 is annularly provided on the outer surface of the nozzle core 2.

[0030] like Figure 1 、 Figure 4 、 Figure 5 and Figure 6As shown, when connecting the nozzle body 1 and the nozzle core 2, the nozzle core 2 is held and the four latching blocks 4 on the outer surface of the nozzle core 2 are respectively inserted upward into the ends of the latching grooves 3 on the lower surface of the nozzle body 1. The nozzle core 2 is continuously pushed upward, so that the nozzle core 2 slides upward inside the latching grooves 3 under the guidance of the latching blocks 4. When the latching blocks 4 contact the ends of the first segment of the latching grooves 3, the nozzle core 2 is rotated so that the latching blocks 4 on the surface of the nozzle core 2 slide within the grooves at the connecting ends of the latching grooves 3 and move into the other segment of the latching grooves 3. The nozzle core 2 is released. After the thrust is removed, the nozzle core 2 slides downward within the second segment of the latching grooves 3 under the action of gravity. At this point, the nozzle core 2 is fully engaged with the nozzle body 1. The latching grooves 3 can prevent the nozzle core 2 from shifting inside the nozzle body 1.

[0031] A fixing structure is provided on the outer surface of the hot nozzle body 1. The fixing structure is provided with a fixing block 6 and a connecting block 7 to further lock and fix the nozzle core 2. The fixing structure includes a connecting ring 5. The connecting ring 5 is a circular ring structure with a thread provided on the inner surface. The connecting ring 5 is threadedly connected to the outer surface of the hot nozzle body 1. The lower surface of the connecting ring 5 is fixedly mounted with a fixing block 6. The fixing block 6 is a cylindrical structure that passes through from top to bottom. The lower surface of the fixing block 6 contacts the connecting block 7. The connecting block 7 is a fan-shaped structure and is fixedly mounted on the outer surface of the nozzle core 2. Four connecting blocks 7 are provided in an annular manner on the outer surface of the nozzle core 2. The radius of the connecting block 7 is greater than the radius of the fixing block 6.

[0032] like Figure 1 、 Figure 2 and Figure 3 As shown, after the nozzle core 2 is engaged with the nozzle body 1, the connecting ring 5 is held and rotated on the outer surface of the nozzle body 1. The connecting ring 5 moves downward, driving the fixing block 6 to move downward synchronously. The fixing block 6 moves downward and contacts the connecting block 7, continuously pressing the connecting block 7, thereby locking the connecting block 7, thereby locking the nozzle core 2 and preventing the nozzle core 2 from slipping inside the engagement groove 3. When the nozzle core 2 needs to be removed, the connecting ring 5 is rotated in the opposite direction, so that the connecting ring 5 moves upward, driving the fixing block 6 upward. The connecting block 7 loses the pressure of the fixing block 6, and the nozzle core 2 is then held and moved in the opposite direction inside the engagement groove 3, allowing the nozzle core 2 to be removed from the surface of the nozzle body 1.

[0033] Working principle: When using the hot runner structure to prevent the nozzle core from loosening, the clamping block 4 on the outer surface of the nozzle core 2 is engaged with the clamping groove 3 on the lower surface of the nozzle body 1. The clamping block 4 slides inside the clamping groove 3, so that the nozzle core 2 and the nozzle body 1 are completely engaged. The clamping groove 3 can prevent the nozzle core 2 from deviating inside the nozzle body 1. The connecting ring 5 is rotated to move downward on the outer surface of the nozzle body 1. The connecting ring 5 drives the fixing block 6 to move. The fixing block 6 moves downward to squeeze the connecting block 7, locking the connecting block 7, thereby preventing the nozzle core 2 from sliding inside the clamping groove 3. The connection process of the nozzle body 1 and the nozzle core 2 is completed, which increases the overall practicality.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hot runner structure for preventing a nozzle core from loosening, comprising a nozzle body (1), wherein the nozzle body (1) is a cylindrical structure, and a nozzle core (2) is provided at the lower end of the nozzle body (1), characterized in that: The hot nozzle body (1) is provided with a snap-fit ​​structure inside, and the snap-fit ​​structure is provided with a snap-fit ​​groove (3) and a snap-fit ​​block (4) that snap-fit ​​and match to achieve a quick snap-fit ​​connection between the nozzle core (2) and the hot nozzle body (1); The engaging structure comprises a card slot (3), the card slot (3) being arranged on the inner wall of the nozzle body (1), and the card slot (3) being a two-section structure, wherein the end of one section of the card slot (3) is arranged to penetrate the lower surface of the nozzle body (1) and is open, and the end of the other section of the card slot (3) is located inside the nozzle body (1), the two sections of the card slot (3) are connected by grooves of equal width, the two sections of the card slot (3) and the connecting groove together form a slide groove, and the slide groove is provided in four sections in an annular manner on the inner wall of the nozzle body (1); The inner wall of the clamping groove (3) is slidably connected with a clamping block (4), which is a cylindrical structure and is fixedly mounted on the outer surface of the nozzle core (2). Four clamping blocks (4) are arranged in an annular manner on the outer surface of the nozzle core (2).

2. The hot runner structure for preventing the nozzle from loosening according to claim 1, characterized in that: The outer surface of the hot nozzle body (1) is provided with a fixing structure, and the fixing structure is provided with a fixing block (6) and a connecting block (7) to further lock and fix the nozzle core (2).

3. The hot runner structure for preventing the nozzle from loosening according to claim 2, characterized in that: The fixing structure comprises a connecting ring (5), which is a circular ring structure with a threaded inner surface. The connecting ring (5) is threadedly connected to the outer surface of the hot nozzle body (1). A fixing block (6) is fixedly installed on the lower surface of the connecting ring (5), and the fixing block (6) is a cylindrical structure that passes through from top to bottom.

4. The hot runner structure for preventing the nozzle from loosening according to claim 3, characterized in that: The lower surface of the fixed block (6) contacts the connecting block (7). The connecting block (7) is a fan-shaped structure and is fixedly mounted on the outer surface of the nozzle core (2). Four connecting blocks (7) are arranged in an annular shape on the outer surface of the nozzle core (2). The radius of the connecting block (7) is greater than the radius of the fixed block (6).

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