Adjustable hot runner valve needle

Abstract

The utility model discloses an adjustable hot runner valve needle which comprises a supporting device, a connecting device is fixedly installed in the supporting device, and the connecting device comprises a grip, a supporting cavity, a lead screw, a guide rod, a displacement support, a supporting base plate, a contact push plate, an alignment key and a clamping plate. The supporting base plate is fixedly installed at the rear end of the bottom of the supporting cavity, the lead screw is rotatably installed between the supporting cavity and the supporting base plate, the guide rods are symmetrically and fixedly installed between the supporting cavity and the supporting base plate and located below the lead screw, and the grip is fixedly installed on the outer ring of the lead screw and located below the lead screw. The displacement support is connected to the outer ring of the lead screw in a threaded and sleeved mode, the contact push plate is fixedly installed at the top of the rear end of the displacement support, and the clamping plates are symmetrically inserted into the side end, away from the displacement support, of the supporting base plate in a sliding mode. Through the arrangement of the connecting device and the supporting device, the purpose that the valve needle can be connected with different air cylinders is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding equipment, in particular to an adjustable hot runner valve needle. Background Art

[0002] A valve needle hot runner refers to a group of components that transfer heat energy to the mold through electric heating. These components include valve needles, hot runner plates, heating tubes, etc. They work together to control the flow state and temperature of the plastic during the injection molding process.

[0003] For example, a needle valve hot runner device with Chinese patent publication number CN207535229U includes a cylinder, a hot nozzle body, a valve needle, a valve needle sleeve, a diverter plate, and a top cover arranged at the bottom of the hot nozzle body and having a gate; the cylinder is fixed above the diverter plate, and the hot nozzle body is pressed flat on the lower part of the diverter plate; the cylinder includes a cylinder base, a template fixedly connected to the upper part of the cylinder base and cooperating with the cylinder base to form a closed space, a cylinder body arranged in the closed space, an inner piston sliding in the cylinder body, an adjusting nut arranged on the central axis of the inner piston, and an air inlet hole opened on the template; the valve needle sleeve is embedded and fixed in the inner cavity formed by the cylinder base and the diverter plate; the top end of the valve needle is fixed on the adjusting nut.

[0004] The needle valve hot runner in the above patent can only achieve the purpose of reducing injection pressure when in use. However, when the valve needle in the existing needle valve hot runner is installed and adapted, the connecting component of the needle valve needs to be adapted and assembled separately, so that the specified needle valve can only be connected to the specified cylinder. Therefore, a device is needed to improve the above problem. Utility Model Content

[0005] The purpose of the present utility model is to provide an adjustable hot runner valve needle to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an adjustable hot runner valve needle, comprising a supporting device, a connecting device fixedly installed inside the supporting device, the connecting device comprising a handle, a supporting cavity, a screw rod, a guide rod, a displacement bracket, a supporting base plate, a contact push plate, an alignment key and a card plate, the supporting base plate is fixedly installed at the bottom rear end of the supporting cavity, the screw rod is rotatably installed between the supporting cavity and the supporting base plate, the guide rod is symmetrically fixedly installed between the supporting cavity and the supporting base plate, and the guide rod is located below the screw rod, the handle is fixedly installed on the outer ring of the screw rod, the displacement bracket is threadedly sleeved on the outer ring of the screw rod, the contact push plate is fixedly installed on the rear end top of the displacement bracket, the card plate is symmetrically slidably inserted on the side end of the supporting base plate away from the displacement bracket, and the alignment key is fixedly installed on the inner side of the card plate close to the contact push plate.

[0007] Preferably, the supporting device comprises a valve needle, a hot runner, a supporting rod, a connecting sleeve and a hydraulic cylinder, the valve needle is slidingly inserted in the inner center of the hot runner, the hot runner is fixedly installed on the supporting rod, the hydraulic cylinder is fixedly installed on the top of the rear end of the supporting rod, and the connecting sleeve is installed at the inner front end of the hydraulic cylinder.

[0008] Preferably, the clamping plate is slidingly inserted in the connecting sleeve, and the supporting cavity is connected with the rear end of the valve needle away from the supporting base.

[0009] Preferably, the two sides of the contact push plate away from the supporting base and the front side end of the alignment key close to the contact push plate are both provided with a 45° inclination, and the inner wall of the connecting sleeve is symmetrically provided with a groove.

[0010] Preferably, the front end of the clamping plate is fixedly installed with a clamping key, and the rear end of the supporting base is symmetrically provided with a clamping groove.

[0011] Preferably, the rear end of the supporting base is provided with a square hole.

[0012] Compared with the prior art, the device has the following beneficial effects:

[0013] When the device is used, the displacement bracket can be driven to move in the supporting cavity through the rotation of the screw rod, so that the contact push plate can be in contact with the alignment key, thereby the clamping plate can be displaced to the two sides, so that the clamping plate can be buckled in the connecting sleeve, at the same time, the self-locking property between the screw rod and the displacement bracket can avoid the reverse displacement of the contact push plate, and the displacement bracket can be supported to move along a straight line through the sliding of the displacement bracket on the guide rod, so that the adaptive connection work of the clamping plate and different connecting sleeves can be completed. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic view of the main structure of the device;

[0015] Figure 2 It is a schematic view of the connecting device structure of the device;

[0016] Figure 3 It is a schematic view of the rear structure of the connecting device of the device;

[0017] Figure 4 It is a schematic view of the supporting device structure of the device.

[0018] In the figure: 1-connection device, 2-support device, 3-grip, 4-support cavity, 5-screw rod, 6-guide rod, 7-displacement support, 8-support base plate, 9-contact push plate, 10-positioning key, 11-clamping plate, 12-valve needle, 13-hot runner, 14-supporting rod, 15-connection sleeve, 16-hydraulic cylinder. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than 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 protection scope of the utility model.

[0020] Please refer to Figure 1-4 An embodiment provided by the utility model: a kind of adjustable hot runner valve needle, support device 2 is fixedly installed with connection device 1 in the inside of support device 2, connection device 1 includes grip 3, support cavity 4, screw rod 5, guide rod 6, displacement support 7, support base plate 8, contact push plate 9, positioning key 10 and clamping plate 11, support base plate 8 is fixedly installed at the bottom rear end of support cavity 4, screw rod 5 is rotatably installed between support cavity 4 and support base plate 8, guide rod 6 is fixedly installed between support cavity 4 and support base plate 8, and guide rod 6 is below screw rod 5, grip 3 is fixedly installed on the outer ring of screw rod 5, displacement support 7 is screwed on the outer ring of screw rod 5, contact push plate 9 is fixedly installed at the rear end top of displacement support 7, clamping plate 11 is symmetrically slidably inserted on the side end of support base plate 8 away from displacement support 7, and positioning key 10 is fixedly installed on the inner side of clamping plate 11 close to contact push plate 9.

[0021] Support device 2 includes valve needle 12, hot runner 13, supporting rod 14, connection sleeve 15 and hydraulic cylinder 16, valve needle 12 is slidably inserted in the inner center of hot runner 13, hot runner 13 is fixedly installed on supporting rod 14, hydraulic cylinder 16 is fixedly installed on the rear end top of supporting rod 14, connection sleeve 15 is installed and arranged in the inner front end of hydraulic cylinder 16, by first loading valve needle 12 into the inside of hot runner 13, then installing hydraulic cylinder 16 on supporting rod 14, so that clamping plate 11 can be conveniently butt-jointed with connection sleeve 15.

[0022] Clamping plate 11 is slidably inserted in the inside of connection sleeve 15, one end of support cavity 4 away from support base plate 8 is connected with the rear end of valve needle 12, by connecting support cavity 4 with valve needle 12, when clamping plate 11 is connected with connection sleeve 15, valve needle 12 can be simultaneously connected.

[0023] The two sides of the contact push plate 9 facing away from the supporting base plate 8 and the front side ends of the alignment key 10 close to the contact push plate 9 are all inclined at 45°, and grooves are symmetrically opened on the inner wall of the connecting sleeve 15 to facilitate the docking and adaptation of the clamping plate 11 and the connecting sleeve 15.

[0024] A latch key is fixedly mounted on the front end of the card plate 11 , and a latch slot is symmetrically provided on the rear end of the supporting base plate 8 , which can support the card plate 11 to move in a straight line.

[0025] A square hole is provided at the rear end of the support base plate 8 to facilitate the contact push plate 9 to penetrate the interior of the support base plate 8 .

[0026] Working principle: When in use, the front end of the valve needle 12 can be inserted into the interior of the hot runner 13, and then the clamping plate 11 is horizontally aligned with the groove inside the connecting sleeve 15 until the clamping plate 11 is located inside the connecting sleeve 15. Then, the handle 3 can be screwed and rotated, and the displacement bracket 7 is threadedly sleeved on the outer ring of the screw rod 5, so that when the screw rod 5 rotates clockwise, it can drive the displacement bracket 7 to move to the rear end, and the displacement bracket 7 is connected to the contact push plate 9, so that when the displacement bracket 7 is displaced, it can drive the contact push plate 9 to move, and the displacement bracket 7 is slidably sleeved on the guide rod 6, so that the guide rod 6 can support the displacement bracket 7 to move in a straight line, which can improve the docking accuracy of the contact push plate 9 and the alignment key 10. Then, when the contact push plate 9 contacts the alignment key 10, a 45° slope is provided on the relative surfaces of the contact push plate 9 and the alignment key 10, so that the contact push plate 9 and the alignment key 10 can be improved. The contact of the key 10 is smooth, and when the contact push plate 9 moves to contact the alignment key 10, it can push the card plate 11 to move to both sides, and the card key at the front end of the card plate 11 slides in the card groove inside the rear end of the supporting base plate 8, so that the card plate 11 can be supported to move in a straight line. At the same time, when the contact push plate 9 squeezes the alignment key 10 to drive the card plate 11 to insert into the groove inside the connecting sleeve 15, a connection can be established between the card plate 11 and the connecting sleeve 15, so that when the hydraulic cylinder 16 is started, it can drive the connecting sleeve 15 and the valve needle 12 to move at the same time, completing the adaptive connection work between the valve needle 12 and the connecting sleeve 15. When this device is in use, the self-locking property between the screw rod 5 and the displacement bracket 7 can prevent the contact push plate 9 from loosening again. At the same time, the card plate 11 can be inserted into connecting sleeves 15 of different diameters, so that it can be connected and adapted to connecting sleeves 15 of different models to complete the work.

[0027] 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. An adjustable hot runner valve needle, comprising a supporting device (2), wherein a connecting device (1) is fixedly installed inside the supporting device (2), characterized in that: The connecting device (1) comprises a handle (3), a supporting cavity (4), a screw rod (5), a guide rod (6), a displacement bracket (7), a supporting base plate (8), a contact push plate (9), an alignment key (10) and a clamping plate (11); the supporting base plate (8) is fixedly mounted at the bottom rear end of the supporting cavity (4); the screw rod (5) is rotatably mounted between the supporting cavity (4) and the supporting base plate (8); and the guide rod (6) is symmetrically fixedly mounted between the supporting cavity (4) and the supporting base plate (8). The guide rod (6) is located below the screw rod (5), the handle (3) is fixedly mounted on the outer ring of the screw rod (5), the displacement bracket (7) is threadedly sleeved on the outer ring of the screw rod (5), the contact push plate (9) is fixedly mounted on the top of the rear end of the displacement bracket (7), the clamping plate (11) is symmetrically slidably inserted on the side end of the supporting base plate (8) away from the displacement bracket (7), and the alignment key (10) is fixedly mounted on the inner side of the clamping plate (11) close to the contact push plate (9).

2. The adjustable hot runner valve needle according to claim 1, characterized in that: The supporting device (2) includes a valve needle (12), a hot runner (13), a support rod (14), a connecting sleeve (15) and a hydraulic cylinder (16); the valve needle (12) is slidably inserted into the inner center of the hot runner (13); the hot runner (13) is fixedly mounted on the support rod (14); the hydraulic cylinder (16) is fixedly mounted on the rear end top of the support rod (14); and the connecting sleeve (15) is installed at the inner front end of the hydraulic cylinder (16).

3. The adjustable hot runner valve needle according to claim 2, characterized in that: The clamping plate (11) is slidably inserted into the interior of the connecting sleeve (15), and the end of the supporting cavity (4) away from the supporting base plate (8) is connected to the rear end of the valve needle (12).

4. The adjustable hot runner valve needle according to claim 3, characterized in that: The two sides of the contact push plate (9) away from the supporting base plate (8) and the front side end of the alignment key (10) close to the contact push plate (9) are both inclined at 45 degrees, and grooves are symmetrically provided on the inner wall of the connecting sleeve (15).

5. The adjustable hot runner valve needle according to claim 4, characterized in that: A card key is fixedly mounted on the front end of the card plate (11), and a card slot is symmetrically provided on the rear end of the support base plate (8).

6. The adjustable hot runner valve needle according to claim 5, characterized in that: A square hole is provided at the rear end of the supporting base plate (8).

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