CN220593925U

CN220593925U - Cylinder for hot runner

Info

Publication number: CN220593925U
Application number: CN202322049763.2U
Authority: CN
Inventors: 孙建
Original assignee: Kunshan Keruijia Hot Runner System Co ltd
Current assignee: Kunshan Keruijia Hot Runner System Co ltd
Priority date: 2023-08-01
Filing date: 2023-08-01
Publication date: 2024-03-15
Anticipated expiration: 2033-08-01

Abstract

The utility model belongs to the technical field of hot runner injection molding, and discloses a hot runner cylinder which comprises a cylinder body, wherein a fixed cavity is formed in the cylinder body, the cylinder body comprises an annular baffle and a valve needle, the annular baffle and the valve needle are both arranged in the fixed cavity of the cylinder body, a clamping groove is formed in the inner wall of the fixed cavity of the cylinder body, a limiting mechanism capable of limiting the moving range of the valve needle is arranged in the clamping groove of the fixed cavity of the cylinder body, a groove is formed in one end, far away from the annular baffle, of the limiting mechanism, an adjusting mechanism is arranged in the groove of the limiting mechanism, a clamping groove is formed in one side, far away from the adjusting mechanism, of the limiting mechanism, a fixing mechanism is arranged in the clamping groove of the limiting mechanism, and the limiting mechanism is arranged at the outer end of the cylinder body, so that a worker does not need to disassemble the cylinder body in the process of adjusting the limiting mechanism, and the time consumed by the worker in adjusting the moving of the limiting mechanism is shortened.

Description

Cylinder for hot runner

Technical Field

The utility model relates to the technical field of hot runner injection molding, in particular to a cylinder for a hot runner.

Background

The hot runner is used in an injection mold, melted plastic is injected into a heating assembly set in a cavity of the mold, the hot runner system generally comprises a hot nozzle, a splitter plate, a temperature control box, accessories and the like, the hot runner system is divided into an open hot runner system and a needle valve type hot runner system, and the hot runner system which meets the requirements is selected according to the raw materials, the appearance and the performance requirements of different products, so that the corresponding nozzle form is selected.

The utility model patent publication No. CN107457965B discloses a valve needle type hot runner cylinder, which comprises a piston, a cylinder body and a valve needle extending longitudinally, wherein the piston is longitudinally movably arranged in the cylinder body and drives the valve needle to longitudinally move; the valve needle type hot runner cylinder further comprises a supporting frame and an adjusting piece, the adjusting piece can be arranged between the supporting frame and the cylinder body in an operating mode, and when the adjusting piece is operated, the cylinder body moves longitudinally relative to the supporting frame, so that the maximum extension length of the free end of the valve needle relative to the supporting frame is adjusted, the cylinder body can move up and down relative to the supporting frame, the maximum extension length of the valve needle relative to the supporting frame is adjusted, the problem that the valve needle cannot be used due to overlong length or too short length caused by thermal expansion, manufacturing defects or using abrasion is solved, and compared with the prior art, the quality of plastic products is improved, the waste of resources is avoided, and the service life of the valve needle is prolonged.

In the course of implementing the present application, this technique was found to have the following problems: the length that current needle formula hot runner cylinder shifted out is adjusted through the position that promotes the regulating part mostly to prevent that the needle from shifting out length overlength in the use, but the clamp plate is all installed on the inside regulating part top of most needle formula hot runner cylinders, makes the staff need dismantle the clamp plate when removing the position of regulating part, thereby has led to the staff to expend longer time when adjusting the removal regulating part, has consequently reduced the practicality of this equipment.

For this purpose, a cylinder for a hot runner is proposed.

Disclosure of Invention

The utility model aims at: in order to solve the problem that the top ends of the regulating parts in most valve needle type hot runner cylinders are provided with pressing plates, so that workers consume a long time when regulating and moving the regulating parts, the utility model provides a hot runner cylinder.

The utility model adopts the following technical scheme for realizing the purposes:

the utility model provides a cylinder for hot runner, includes the cylinder body, fixed chamber has been seted up to the inside of cylinder body, the cylinder body includes annular baffle and needle, annular baffle reaches the needle all sets up the fixed intracavity portion of cylinder body, the draw-in groove has been seted up to the fixed intracavity wall of cylinder body, the draw-in groove internally mounted in the fixed chamber of cylinder body can restrict the stop gear of needle movable range, stop gear keeps away from the recess has been seted up to the one end of annular baffle, stop gear's recess internally mounted has adjustment mechanism, stop gear keeps away from draw-in groove has been seted up to one side of adjustment mechanism, stop gear's draw-in groove is inside to be provided with fixed establishment.

Further, stop gear includes the fixture block, the fixture block joint is in the draw-in groove inside of the fixed chamber of cylinder body, the through-hole has been seted up to the inside of fixture block, the inside rotation of through-hole of fixture block is connected with the lead screw, the outside threaded connection of lead screw has the limiting plate, the surface sliding connection of limiting plate is in inside the draw-in groove of the fixed chamber of cylinder body, the position of limiting plate is located the right lower extreme of annular baffle, the surface of lead screw is seted up flutedly, the scale mark has been seted up to the recess inner wall of lead screw.

Further, the fixed establishment includes the magnetic path, the magnetic path is installed inside the draw-in groove of lead screw, the upper surface of magnetic path adsorbs there is the iron plate, the recess has been seted up to cylinder body fixed chamber draw-in groove inner wall bottom, the top of iron plate is installed inside the recess in cylinder body fixed chamber.

Further, adjustment mechanism includes the connecting block, the top joint of connecting block is in inside the recess of lead screw, the connecting block is kept away from the fixed block is installed to one side of lead screw, the through-hole has been seted up to the inside of fixed block, the inside grafting of through-hole of fixed block has the connecting rod.

Further, one side of the fixing block, which is close to the screw rod, is abutted against one side of the clamping block, which is far away from the fixing mechanism, and the outer contour of the fixing block is larger than that of the screw rod.

Further, a rubber pad is adhered to one side, close to the clamping block, of the fixing block, and one side, away from the fixing block, of the rubber pad is abutted to one side, close to the connecting rod, of the clamping block.

The beneficial effects of the utility model are as follows:

1. according to the utility model, the screw rod is rotated to drive the limiting plate to move in the fixed cavity of the cylinder body, and the position of the limiting plate is positioned on the moving path of the annular baffle plate, so that the limiting plate limits the length of the valve needle moving out of the cylinder body, and the head of the valve needle is prevented from striking the inner wall of the pouring gate in the moving process due to the overlong moving length of the valve needle as much as possible, so that the service life of the valve needle is prolonged.

2. According to the utility model, the screw rod is arranged at the outer end of the cylinder body, so that a worker does not need to disassemble and disassemble the cylinder body in the process of rotating the screw rod adjusting limiting plate, the time consumed by the worker in adjusting and moving the limiting plate is shortened, and the practicability of the equipment is improved.

Drawings

FIG. 1 is a schematic view of the bottom structure of the present utility model;

FIG. 2 is a schematic diagram of the front structure of the spacing mechanism of the present utility model;

FIG. 3 is a schematic view of the structure of the fixing mechanism of the present utility model;

fig. 4 is an enlarged view of the utility model at a in fig. 2.

Reference numerals: 1. a cylinder body; 2. an annular baffle; 3. a valve needle; 4. a limiting mechanism; 5. a limiting plate; 6. a clamping block; 7. a screw rod; 8. a scale mark; 9. an adjusting mechanism; 10. a fixed block; 11. a connecting block; 12. a connecting rod; 13. a rubber pad; 14. a magnetic block; 15. iron blocks; 16. a fixing mechanism.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In describing embodiments of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "inner", "outer", "upper", etc. are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in place when the inventive product is used, are merely for convenience of description and simplification of description, and are not indicative or implying that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

As shown in fig. 1 to 4, the cylinder for the hot runner comprises a cylinder body 1, a fixed cavity is formed in the cylinder body 1, the cylinder body 1 comprises an annular baffle 2 and a valve needle 3, the annular baffle 2 and the valve needle 3 are arranged in the fixed cavity of the cylinder body 1, a clamping groove is formed in the inner wall of the fixed cavity of the cylinder body 1, a limiting mechanism 4 capable of limiting the moving range of the valve needle 3 is arranged in the clamping groove of the fixed cavity of the cylinder body 1, one end, far away from the annular baffle 2, of the limiting mechanism 4 is provided with a groove, an adjusting mechanism 9 is arranged in the groove of the limiting mechanism 4, one side, far away from the adjusting mechanism 9, of the limiting mechanism 4 is provided with a clamping groove, and a fixing mechanism 16 is arranged in the clamping groove of the limiting mechanism 4; specifically, the limiting mechanism 4 is arranged at the outer end of the cylinder body 1, so that a worker does not need to disassemble the cylinder body 1 in the process of adjusting the limiting mechanism 4, and the time consumed by the worker in adjusting the moving limiting mechanism 4 is shortened; the screw rod 7 is driven to rotate through the rotation adjusting mechanism 9, so that a worker does not need to take tools in the process of rotating the screw rod 7, and the time consumed by the worker in adjusting the position of the movable limiting plate 5 is shortened.

Meanwhile, the moving position of the limiting mechanism 4 in the clamping groove of the fixed cavity of the cylinder body 1 is limited through the fixing mechanism 16, so that the situation that the limiting plate 5 cannot limit the moving positions of the annular baffle 2 and the valve needle 3 due to movement of the limiting mechanism 4 in the using process is avoided as much as possible, and the stability of the limiting mechanism 4 in the using process is improved.

As shown in fig. 1 to 4, the limiting mechanism 4 comprises a clamping block 6, the clamping block 6 is clamped in a clamping groove of a fixed cavity of the cylinder body 1, a through hole is formed in the clamping block 6, a screw rod 7 is rotationally connected in the through hole of the clamping block 6, a limiting plate 5 is connected to the external thread of the screw rod 7, the outer surface of the limiting plate 5 is slidably connected in the clamping groove of the fixed cavity of the cylinder body 1, the position of the limiting plate 5 is located at the right lower end of the annular baffle 2, a groove is formed in the outer surface of the screw rod 7, and scale marks 8 are formed in the inner wall of the groove of the screw rod 7; specifically, before the cylinder body 1 is used, the limiting plate 5 is driven to move in the fixed cavity of the cylinder body 1 through the rotating screw rod 7, the position of the limiting plate 5 is located on the moving path of the annular baffle plate 2, the limiting plate 5 limits the length of the valve needle 3 moving out of the cylinder body 1, and accordingly the situation that the valve needle 3 moves out of the length too long to cause the head of the valve needle 3 to collide with the inner wall of the pouring gate in the moving process is avoided as much as possible, and the service life of the valve needle 3 is prolonged.

Meanwhile, the screw rod 7 is arranged at the outer end of the air cylinder body 1, so that a worker does not need to disassemble the air cylinder body 1 in the process of rotating the screw rod 7 to adjust the limiting plate 5, the time consumed by the worker in adjusting the moving limiting plate 5 is shortened, and the practicability of the equipment is improved; the outer surface through lead screw 7 is provided with scale mark 8 for the staff can adjust according to the mark on scale mark 8 surface when adjusting the position of removing limiting plate 5, thereby makes limiting plate 5 can accurate restriction needle 3's range of movement, has consequently improved this equipment accuracy in the use.

As shown in fig. 3, the fixing mechanism 16 comprises a magnetic block 14, the magnetic block 14 is arranged in a clamping groove of the screw rod 7, an iron block 15 is adsorbed on the upper surface of the magnetic block 14, a groove is formed in the bottom of the inner wall of the clamping groove of the fixing cavity of the cylinder body 1, and the top end of the iron block 15 is arranged in the groove of the fixing cavity of the cylinder body 1; specifically, after the stop gear 4 is mounted to the inside of the clamping groove of the fixed cavity of the cylinder body 1, the upper surface of the magnetic block 14 is adsorbed on the lower surface of the iron block 15, so that the magnetic block 14 and the iron block 15 limit the moving position of the stop gear 4 in the clamping groove of the fixed cavity of the cylinder body 1, and the stop gear 4 is prevented from moving in the using process as much as possible, so that the stop plate 5 cannot limit the moving positions of the annular baffle 2 and the valve needle 3, and the stability of the stop gear 4 in the using process is improved.

As shown in fig. 2 and 4, the adjusting mechanism 9 comprises a connecting block 11, the top end of the connecting block 11 is clamped in a groove of the screw rod 7, a fixed block 10 is arranged on one side, away from the screw rod 7, of the connecting block 11, a through hole is formed in the fixed block 10, and a connecting rod 12 is inserted in the through hole of the fixed block 10; specifically, when a worker needs to adjust the height of the movable limiting plate 5, the connecting block 11 is clamped into the clamping groove of the screw rod 7 by pressing the connecting block 11, and then the adjusting mechanism 9 and the clamping block 6 are driven to synchronously rotate by the rotating connecting rod 12, so that the worker does not need to take a rotating tool in the process of rotating the screw rod 7 to push the limiting plate 5 to move, and the time consumed by the worker in adjusting the position of the movable limiting plate 5 is shortened; inside the draw-in groove at lead screw 7 is pegged graft through connecting block 11 for connecting block 11 can dismantle when cylinder body 1 normal use, thereby avoids connecting block 11 and adjustment mechanism 9 to influence cylinder body 1 as far as possible and carries out normal installation and use.

As shown in fig. 4, one side of the fixed block 10 close to the screw rod 7 is abutted against one side of the clamping block 6 far away from the fixed mechanism 16, and the outer contour of the fixed block 10 is larger than that of the screw rod 7; specifically, when the device is in the in-process of restriction storage, through promoting fixed block 10, with the upper surface butt of fixed block 10 at the just lower extreme of fixture block 6 and lead screw 7 junction for fixed block 10 shelters from the protection to the exposed outside position of fixture block 6 and lead screw 7 junction, thereby avoids the dust to get into the junction inside of lead screw 7 and fixture block 6 as far as possible.

As shown in fig. 4, a rubber pad 13 is adhered to one side of the fixing block 10 close to the clamping block 6, and one side of the rubber pad 13 away from the fixing block 10 is abutted against one side of the clamping block 6 close to the connecting rod 12; specifically, when a worker rotates the screw rod 7 by the rotation adjusting mechanism 9, the position of the rubber pad 13 is located between the connection part of the fixed block 10 and the clamping block 6, so that the rubber pad 13 shields and protects the contact surface between the fixed block 10 and the clamping block 6, friction damage between the contact surface between the fixed block 10 and the clamping block 6 after the fixed block 10 rotates for a long time is avoided as much as possible, and therefore the service lives of the clamping block 6 and the fixed block 10 are prolonged; the connection part of the fixed block 10 and the clamping block 6 is plugged through the rubber pad 13, so that the connection part of the screw rod 7 and the clamping block 6 is prevented from being blocked as much as possible due to the fact that air dust enters the connection part of the screw rod 7 and the clamping block 6.

To sum up: before the cylinder body 1 is used, the limiting plate 5 is driven to move in the fixed cavity of the cylinder body 1 by rotating the screw rod 7, and the position of the limiting plate 5 is located on the moving path of the annular baffle 2, so that the limiting plate 5 limits the length of the valve needle 3 moving out of the cylinder body 1, and the head of the valve needle 3 is prevented from being impacted to the inner wall of the gate in the moving process due to the overlong moving out length of the valve needle 3, and the service life of the valve needle 3 is prolonged; after the stop gear 4 is installed to the draw-in groove inside of the fixed chamber of cylinder body 1, adsorb the lower surface at iron plate 15 through the upper surface of magnetic path 14 for magnetic path 14 and iron plate 15 restrict stop gear 4 at the inside mobile position of draw-in groove of the fixed chamber of cylinder body 1, thereby avoid stop gear 4 to produce the removal and lead to limiting plate 5 unable to restrict annular baffle 2 and the mobile position of needle 3 in the in-process of using as far as possible, consequently improved stop gear 4's stability in the use.

Meanwhile, when the worker needs to adjust the height of the movable limiting plate 5, the connecting block 11 is clamped into the clamping groove of the screw rod 7 by pressing the connecting block 11, and then the adjusting mechanism 9 and the clamping block 6 are driven to synchronously rotate by the rotating connecting rod 12, so that the worker does not need to take a rotating tool in the process of rotating the screw rod 7 to push the limiting plate 5 to move, and the time consumed by the worker in adjusting the position of the movable limiting plate 5 is shortened; when the device is in the in-process of restriction storage, through promoting fixed block 10, with the upper surface butt of fixed block 10 at fixture block 6 and the just lower extreme of lead screw 7 junction for fixed block 10 shelters from the protection to the exposed outside position of fixture block 6 and lead screw 7 junction, thereby avoids the dust to get into the inside of the junction of lead screw 7 and fixture block 6 as far as possible.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a cylinder for hot runner, includes cylinder body (1), its characterized in that: the cylinder body (1) is inside to be offered fixed chamber, cylinder body (1) includes annular baffle (2) and needle (3), annular baffle (2) reaches needle (3) all set up the fixed intracavity portion of cylinder body (1), the draw-in groove has been offered to the fixed intracavity wall of cylinder body (1), the draw-in groove internally mounted in the fixed chamber of cylinder body (1) has stop gear (4) that can restrict needle (3) movable range, stop gear (4) are kept away from the one end of annular baffle (2) is seted up flutedly, the recess internally mounted of stop gear (4) has adjustment mechanism (9), stop gear (4) are kept away from one side of adjustment mechanism (9) is offered the draw-in groove, the draw-in groove inside of stop gear (4) is provided with fixed establishment (16).

2. The hot runner cylinder according to claim 1, wherein: stop gear (4) are including fixture block (6), fixture block (6) joint is in inside the draw-in groove in the fixed chamber of cylinder body (1), the through-hole has been seted up to the inside of fixture block (6), the inside rotation of through-hole of fixture block (6) is connected with lead screw (7), the outside threaded connection of lead screw (7) has limiting plate (5), the surface sliding connection of limiting plate (5) is in inside the draw-in groove in the fixed chamber of cylinder body (1), the position of limiting plate (5) is located the dead lower extreme of annular baffle (2), the recess has been seted up to the surface of lead screw (7), scale mark (8) have been seted up to the recess inner wall of lead screw (7).

3. The hot runner cylinder according to claim 2, wherein: the fixing mechanism (16) comprises a magnetic block (14), the magnetic block (14) is arranged inside a clamping groove of the screw rod (7), an iron block (15) is adsorbed on the upper surface of the magnetic block (14), a groove is formed in the bottom of the inner wall of the clamping groove of the fixing cavity of the cylinder body (1), and the top end of the iron block (15) is arranged inside the groove of the fixing cavity of the cylinder body (1).

4. A hot runner cylinder according to claim 3, wherein: the adjusting mechanism (9) comprises a connecting block (11), the top end of the connecting block (11) is clamped inside a groove of the screw rod (7), a fixing block (10) is arranged on one side, away from the screw rod (7), of the connecting block (11), a through hole is formed in the fixing block (10), and a connecting rod (12) is inserted into the through hole of the fixing block (10).

5. The hot runner cylinder according to claim 4, wherein: one side of the fixing block (10) close to the screw rod (7) is abutted to one side of the clamping block (6) far away from the fixing mechanism (16), and the outer contour of the fixing block (10) is larger than that of the screw rod (7).

6. The hot runner cylinder according to claim 5, wherein: one side of the fixing block (10) close to the clamping block (6) is adhered with a rubber pad (13), and one side of the rubber pad (13) away from the fixing block (10) is abutted to one side of the clamping block (6) close to the connecting rod (12).