CN221161362U

CN221161362U - Novel cylinder with valve needle length adjusting and stress buffering functions

Info

Publication number: CN221161362U
Application number: CN202322493309.6U
Authority: CN
Inventors: 阮军平
Original assignee: Dongguan Youdao Mold Technology Co ltd
Current assignee: Dongguan Youdao Mold Technology Co ltd
Priority date: 2023-09-13
Filing date: 2023-09-13
Publication date: 2024-06-18
Anticipated expiration: 2033-09-13

Abstract

The utility model discloses a novel cylinder with valve needle length adjusting and stress buffering functions, which comprises a piston assembly, a piston body, a first mounting hole, a first nut, a first rubber ring, a first groove, a second mounting hole, a spring, a thimble, a flange, a limiting hole, a limiting block, a second rubber ring, a third rubber ring, a second groove, a valve needle body, a fourth rubber ring, a fifth rubber ring, a third groove, a cylinder body assembly, a third mounting hole, a cylinder body, a screw, a fourth mounting hole, a sixth rubber ring, a fourth groove, a cylinder cover, a through hole and a second nut, wherein the length of the valve needle is adjusted by the second adjusting nut, so that the actual length of the valve needle can be adjusted to a theoretical length, and valve needle scrapping caused by factors such as machining precision, accumulated tolerance and the like is avoided; the utility model utilizes the spring to buffer the valve needle sealing action, thereby avoiding the problem of deformation of the pouring gate and damage to the die caused by the over-high linear speed of the valve needle sealing.

Description

Novel cylinder with valve needle length adjusting and stress buffering functions

Technical Field

The utility model relates to the technical field of cylinders, in particular to a novel cylinder with valve needle length adjusting and stress buffering functions.

Background

In the hot runner market, a needle valve type hot runner is generally adopted, the opening and closing of a glue starting opening are controlled through the movement of a valve needle, and a valve needle glue sealing mode is generally adopted, so that the following defects exist: firstly, the length of the valve needle is not adjustable, and the length of the valve needle is difficult to accurately control due to factors such as the thickness machining precision and accumulated tolerance of a die plate, the length machining precision of the valve needle, the accumulated tolerance of a cylinder part and the like, so that the actual length of the valve needle is different from the theoretical length, and the valve needle is scrapped; secondly, the linear speed of the valve needle sealing glue is too high, so that the pouring gate is easy to deform and damage the die.

Disclosure of utility model

The utility model aims to provide a novel cylinder with valve needle length adjusting and stress buffering functions, so as to solve the problems in the background art.

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a novel cylinder with needle length adjustment and atress buffer function, includes the cylinder body subassembly, install the piston subassembly in the cylinder body subassembly, the piston subassembly includes the piston body, the first mounting hole has been seted up in the piston body, threaded connection has first nut in the first mounting hole, the second mounting hole has been seted up in the first nut, install the thimble in the second mounting hole, cup jointed the spring on the thimble, be provided with the flange on the thimble, and the flange cup joints in the second mounting hole, the second nut is installed to first nut bottom, and second nut threaded connection is in first mounting hole, the spacing hole has been seted up in the second nut, be provided with the stopper in the spacing hole, and the stopper sets up in the bottom of thimble, fixed surface has the needle body under the stopper.

Preferably, one end of the spring is fixedly connected to the second mounting hole, and the other end of the spring is fixedly connected to the upper surface of the flange.

Preferably, the cylinder body assembly comprises a cylinder body, a third mounting hole is formed in the cylinder body, the piston body is slidably connected in the third mounting hole, a cylinder cover is arranged at the top end of the piston body and fixedly connected in the third mounting hole, two fourth mounting holes are formed in the top end of the cylinder cover, screws are mounted in the fourth mounting holes, and the screws are in threaded connection with the cylinder body.

Preferably, a fourth groove is formed in the cylinder cover, a sixth rubber ring is sleeved in the fourth groove, and the sixth rubber ring is arranged in the third mounting hole.

Preferably, a first groove is formed in the first nut, a first rubber ring is sleeved in the first groove, and the first rubber ring is arranged in the first mounting hole.

Preferably, a second groove is formed in the piston body, a second rubber ring is sleeved in the second groove, a third rubber ring is sleeved on the second rubber ring, and the third rubber ring is sleeved in the third mounting hole.

Preferably, a through hole is arranged in the third mounting hole, a third groove is formed in the piston body, a fourth rubber ring is sleeved in the third groove, a fifth rubber ring is sleeved on the fourth rubber ring, and the fifth rubber ring is arranged in the through hole.

The novel cylinder with the valve needle length adjusting and stress buffering functions has the advantages that: the length of the valve needle is adjusted by utilizing the second adjusting nut, so that the actual length of the valve needle can be adjusted to the theoretical length, and the valve needle is prevented from being scrapped due to factors such as machining precision, accumulated tolerance and the like; the utility model utilizes the spring to buffer the valve needle sealing action, thereby avoiding the problem of deformation of the pouring gate and damage to the die caused by the over-high linear speed of the valve needle sealing.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall front cut-away structure of the present utility model;

FIG. 2 is a schematic view of a piston body of the present utility model in front elevation cutaway;

FIG. 3 is an enlarged view of the structure of area A in FIG. 2;

FIG. 4 is a schematic view of a piston assembly in an injection molded state according to the present utility model in front elevation and in cross section;

fig. 5 is a schematic diagram showing a front view and a cut-away structure of a piston assembly in a sealing state according to the present utility model.

In the figure: 1. a piston assembly; 11. a piston body; 112. a first mounting hole; 113. a first nut; 114. a first rubber ring; 115. a first trench; 116. a second mounting hole; 117. a spring; 118. a thimble; 119. a flange; 120. a limiting hole; 121. a limiting block; 122. the second rubber ring; 123. a third rubber ring; 124. a second trench; 125. a valve needle body; 126. a fourth rubber ring; 127. a fifth rubber ring; 128. a third trench; 129. a second nut; 2. a cylinder assembly; 21. a third mounting hole; 22. a cylinder body; 23. a screw; 24. a fourth mounting hole; 25. a sixth rubber ring; 26. a fourth trench; 27. a cylinder cover; 28. and a through hole.

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. All other embodiments, which can be made by one of ordinary skill in the art without inventive faculty, are intended to be within the scope of the present utility model, based on the embodiments of the present utility model.

Referring to fig. 1-5, an embodiment of the present utility model is provided: the novel cylinder with the valve needle length adjusting and stress buffering functions comprises a cylinder body assembly 2, wherein a piston assembly 1 is arranged in the cylinder body assembly 2, the piston assembly 1 comprises a piston body 11, a first mounting hole 112 is formed in the piston body 11, a first nut 113 is connected in the first mounting hole 112 in a threaded manner, a second mounting hole 116 is formed in the first nut 113, a thimble 118 is arranged in the second mounting hole 116, a spring 117 is sleeved on the thimble 118, a flange 119 is arranged on the thimble 118, the flange 119 is sleeved in the second mounting hole 116, the bottom end of the first nut 113 is provided with a second nut 129, the second nut 129 is in threaded connection with the first mounting hole 112, a limiting hole 120 is arranged in the second nut 129, a limiting block 121 is arranged in the limiting hole 120, the limiting block 121 is arranged at the bottom end of the thimble 118, the lower surface of the limiting block 121 is fixedly connected with a valve needle body 125, the cylinder body assembly 2 is a cylinder shell, the piston assembly 1 utilizes the first nut 113 to adjust the elastic force of the thimble 118, the second nut 129 is utilized to adjust the length of the valve needle body 125, the thimble 118 is used for supporting the valve needle body 125, the spring 117 is used for providing elastic force for the thimble 118, the flange 119 is used for limiting the spring 117, the limiting hole 120 is used for installing the limiting block 121, and the limiting block 121 is used for limiting the valve needle body 125; one end of the spring 117 is fixedly connected to the second mounting hole 116, the other end is fixedly connected to the upper surface of the flange 119, and the spring 117 applies elastic force to the thimble 118 through the flange 119; the cylinder assembly 2 comprises a cylinder body 22, a third mounting hole 21 is formed in the cylinder body 22, the piston body 11 is slidably connected in the third mounting hole 21, a cylinder cover 27 is arranged at the top end of the piston body 11 and fixedly connected in the third mounting hole 21, two fourth mounting holes 24 are formed at the top end of the cylinder cover 27, a screw 23 is mounted in the fourth mounting hole 24 and is in threaded connection with the cylinder body 22, the cylinder cover 27 is used for sealing the third mounting hole 21, the third mounting hole 21 is used for accommodating the piston body 11, the fourth mounting hole 24 is used for mounting the screw 23, and the screw 23 is used for fixing the cylinder cover 27; the cylinder cover 27 is provided with a fourth groove 26, a sixth rubber ring 25 is sleeved in the fourth groove 26, the sixth rubber ring 25 is arranged in the third mounting hole 21, the fourth groove 26 is used for accommodating the sixth rubber ring 25, and the sixth rubber ring 25 is used for improving the air tightness between the cylinder cover 27 and the third mounting hole 21; the first nut 113 is provided with a first groove 115, a first rubber ring 114 is sleeved in the first groove 115, the first rubber ring 114 is arranged in the first mounting hole 112, the first groove 115 is used for mounting the first rubber ring 114, and the first rubber ring 114 is used for improving the air tightness between the first nut 113 and the first mounting hole 112; the piston body 11 is provided with a second groove 124, a second rubber ring 122 is sleeved in the second groove 124, a third rubber ring 123 is sleeved on the second rubber ring 122, the third rubber ring 123 is sleeved in the third mounting hole 21, the second groove 124 is used for mounting the second rubber ring 122 and the third rubber ring 123, and the second rubber ring 122 and the third rubber ring 123 are used for improving the air tightness between the piston body 11 and the third mounting hole 21; the third mounting hole 21 is internally provided with a through hole 28, the piston body 11 is provided with a third groove 128, a fourth rubber ring 126 is sleeved in the third groove 128, a fifth rubber ring 127 is sleeved on the fourth rubber ring 126, the fifth rubber ring 127 is arranged in the through hole 28, the through hole 28 is used for accommodating the valve needle body 125, the third groove 128 is used for mounting the fourth rubber ring 126, and the fourth rubber ring 126 and the fifth rubber ring 127 are used for improving the air tightness between the piston body 11 and the through hole 28.

Working principle: when the utility model is used for injection molding, the second nut 129 in the first mounting hole 112 is twisted and adjusted by using the hexagonal wrench, the limiting block 121 in the limiting hole 120 drives the valve needle body 125 to move, so that the part of the valve needle body 125, which protrudes out of the piston body 11, reaches the required length, and then the first nut 113 is adjusted, so as to adjust the deformation degree of the spring 117, further, the elastic force of the ejector pin 118 is adjusted, when the injection molding is performed, the valve needle body 125 is in an open state, the spring 117 is in a free state, when the injection molding is finished, air is introduced into the third mounting hole 21, the piston body 11 is pushed to move downwards, the valve needle body 125 starts to seal the glue, the valve needle body 125 is in contact with a mold, the valve needle body 125 drives the limiting block 121 to move upwards along the limiting hole 120, the ejector pin 118 is pushed by the limiting block 121, and the ejector pin 118 compresses the spring 117 through the flange 119, so that the valve needle body 125 is buffered by the spring 117; the cylinder cover 27 is used for sealing the first mounting hole 112, the fourth mounting hole 24 is used for mounting the screw 23, the screw 23 is used for fixing the cylinder cover 27, the fourth groove 26 is used for accommodating the sixth rubber ring 25, the sixth rubber ring 25 is used for improving the air tightness between the cylinder cover 27 and the third mounting hole 21, the first groove 115 is used for mounting the first rubber ring 114, the first rubber ring 114 is used for improving the air tightness between the first nut 113 and the first mounting hole 112, the second groove 124 is used for mounting the second rubber ring 122 and the third rubber ring 123, the second rubber ring 122 and the third rubber ring 123 are used for improving the air tightness between the piston body 11 and the third mounting hole 21, the through hole 28 is used for accommodating the valve needle body 125, the third groove 128 is used for mounting the fourth rubber ring 126, the fourth rubber ring 126 and the fifth rubber ring 127 are matched for improving the air tightness between the piston body 11 and the through hole 28, and the second mounting hole 116 is used for accommodating the spring 117.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. Novel cylinder with needle length adjustment and atress buffering function, including cylinder body subassembly (2), its characterized in that: install piston assembly (1) in cylinder body subassembly (2), piston assembly (1) include piston body (11), first mounting hole (112) have been seted up in piston body (11), first mounting hole (112) internal thread connection has first nut (113), second mounting hole (116) have been seted up in first nut (113), install thimble (118) in second mounting hole (116), cup joint spring (117) on thimble (118), be provided with flange (119) on thimble (118), and flange (119) cup joint in second mounting hole (116), second nut (129) are installed to first nut (113) bottom, and second nut (129) threaded connection is in first mounting hole (112), limiting hole (120) have been seted up in second nut (129), and limiting block (121) set up in the bottom of thimble (118), surface fixedly connected with needle body (125) under limiting block (121).

2. The novel cylinder with valve needle length adjusting and stress buffering functions according to claim 1, wherein: one end of the spring (117) is fixedly connected to the second mounting hole (116), and the other end of the spring is fixedly connected to the upper surface of the flange (119).

3. The novel cylinder with valve needle length adjusting and stress buffering functions according to claim 1, wherein: the cylinder body assembly (2) comprises a cylinder body (22), a third mounting hole (21) is formed in the cylinder body (22), the piston body (11) is slidably connected in the third mounting hole (21), a cylinder cover (27) is arranged at the top end of the piston body (11), the cylinder cover (27) is fixedly connected in the third mounting hole (21), two fourth mounting holes (24) are formed in the top end of the cylinder cover (27), screws (23) are arranged in the fourth mounting holes (24), and the screws (23) are in threaded connection with the cylinder body (22).

4. A novel cylinder with valve needle length adjustment and stress buffering functions according to claim 3, wherein: a fourth groove (26) is formed in the cylinder cover (27), a sixth rubber ring (25) is sleeved in the fourth groove (26), and the sixth rubber ring (25) is arranged in the third mounting hole (21).

5. The novel cylinder with valve needle length adjusting and stress buffering functions according to claim 1, wherein: a first groove (115) is formed in the first nut (113), a first rubber ring (114) is sleeved in the first groove (115), and the first rubber ring (114) is arranged in the first mounting hole (112).

6. A novel cylinder with valve needle length adjustment and stress buffering functions according to claim 3, wherein: the piston body (11) is provided with a second groove (124), a second rubber ring (122) is sleeved in the second groove (124), a third rubber ring (123) is sleeved on the second rubber ring (122), and the third rubber ring (123) is sleeved in the third mounting hole (21).

7. A novel cylinder with valve needle length adjustment and stress buffering functions according to claim 3, wherein: the third mounting hole (21) is internally provided with a through hole (28), the piston body (11) is provided with a third groove (128), the third groove (128) is internally sleeved with a fourth rubber ring (126), the fourth rubber ring (126) is sleeved with a fifth rubber ring (127), and the fifth rubber ring (127) is arranged in the through hole (28).