Linkage quick pressure release valve of injection molding machine

Abstract

The utility model discloses an injection molding machine linkage rapid pressure release valve which comprises a valve body and a flange, one side in the valve body is fixedly connected with a connection disc, one side of the connection disc is in contact with a backing ring, one side of the backing ring is inserted with an insertion rod, one end of the insertion rod is fixedly connected with a buffer block, the buffer block is of a spindle-shaped structure, the insertion rod is sleeved with a first spring, and the first spring is in contact with the backing ring. One side of the buffer block is in contact with an annular filler strip, the annular filler strip is fixedly connected with a limiting ring, the limiting ring is fixedly connected into the valve body, a through hole is formed in the upper side of the valve body, and a fixing cylinder is fixedly connected to the portion, located on the upper side of the through hole, of the valve body; the first spring is arranged in the valve body and matched with the fusiform buffer block to achieve the effects of pressure relief and impact reduction, the through hole and the fixing cylinder and the piston on the upper side of the through hole are matched, a damping hole structure can be formed, noise generated when an oil body is output is reduced, and meanwhile noise of the valve body can be further reduced through the cleaning ring and the clamping ring.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure relief valve technical field, concretely relates to a quick pressure relief valve of linkage of injection molding machine. BACKGROUND

[0002] With domestic plastics industry industry coverage more and more wide, product also more and more rich, face strong well truth, technology development more tends to machine energy -conserving high -efficient, cost optimization aspect, and in the injection molding process, multiple actions work simultaneously can effectively save production cycle, and improve customer production efficiency, to complete the switching of multiple actions to merge, and the stability of the control system and hydraulic oil circuit of machine has certain requirement, needs to use the pressure relief valve to realize pressure relief.

[0003] When the oil circuit is separated, the pressure relief should be fast and smooth, otherwise it will affect the operation of the next action. At present, the pressure relief valve is mainly used to realize pressure relief. Otherwise, it will cause large pressure relief impact and noise.

[0004] According to the "quick pressure relief valve" with the Chinese patent publication number CN221347973U, the main structure described is the setting of the pressure relief ball, the pressure relief port, the limiting ring, the drive shaft and the plug-in rod. When pressure relief is needed, only the transmission plate needs to be rotated to drive the drive shaft to rotate, and the drive shaft drives the pressure relief ball to rotate on the pressure relief tank, so that the pressure relief port on the pressure relief ball coincides with the valve body, thereby achieving quick pressure relief of the valve body. After use, the plug-in rod on the transmission plate is inserted into the plug-in hole to quickly fix the position of the pressure relief ball, avoiding non-human pressure relief of the valve body during use. When using one pressure relief valve as a pressure relief tool for two oil circuits, noise will be generated, affecting the pressure relief effect.

[0005] Therefore, a quick pressure relief valve for injection molding machine linkage is proposed to solve the problem of noise and poor pressure relief effect when using one pressure relief valve as a pressure relief tool for two oil circuits. Utility model content

[0006] The utility model solves the technical problem that when using one pressure relief valve as a pressure relief tool for two oil circuits, noise will be generated, affecting the pressure relief effect. Therefore, a quick pressure relief valve for injection molding machine linkage is proposed.

[0007] The utility model discloses a technical scheme that solves technical problems is adopted: a kind of injection molding machine linkage quick pressure relief valve, including valve body and flange, the one side fixedly connected with adapter disc in valve body, the adapter disc one side contact has grommet, the grommet one side inserts and has inserted rod, the inserted rod one end fixedly connected with buffer block, the buffer block is spindle-shaped structure, first spring is sleeved on the inserted rod, the first spring is contacted with grommet, the buffer block one side contact has annular gasket strip, the annular gasket strip fixedly connected with limit ring, the limit ring is fixedly connected in valve body, the valve body upper side is equipped with through-hole, the valve body is located the fixed cylinder of through-hole upper side fixedly connected with, the fixed cylinder is fixedly connected with second spring in, the second spring bottom end fixedly connected with piston.

[0008] As a preferred technical scheme of the utility model, the adapter disc movably inserts a moving rod, the moving rod is sleeved with a third spring, one end of the third spring contacts a limiting block, the limiting block is fixedly connected with the moving rod, one end of the moving rod is fixedly connected with a cleaning ring, the cleaning ring contacts the inner side of the valve body, by setting the moving rod and the cleaning ring, the diameter of one side of the valve body output end can be reduced, and the cleaning ring is pushed to move at one side of the valve body outlet end, so that the effect of cleaning the inner wall of the valve body is achieved.

[0009] As a preferred technical scheme of the utility model, a through hole is formed in the adapter disc, and a packing seal is arranged in the through hole, the packing seal contacts the moving rod, by setting the packing seal, the overflow of plastic is reduced.

[0010] As a preferred technical scheme of the utility model, one side of the moving rod is fixedly connected with a snap ring, the outer side of the snap ring contacts an amplification groove, the amplification groove is located in the valve body, by setting the snap ring and the amplification groove, the adhesion can be cleaned.

[0011] As a preferred technical scheme of the utility model, the outer side of the valve body is fixedly connected with a noise reduction sleeve, the noise reduction sleeve is composed of rubber, and the noise reduction sleeve can increase the noise reduction effect of the valve body.

[0012] The utility model has the following advantages: by setting the first spring in the valve body and cooperating with the spindle-shaped buffer block, the effect of pressure relief and impact reduction can be achieved, and cooperating with the through hole, the fixed cylinder on the upper side of the through hole and the piston, the damping hole structure can be formed, the noise during oil output is reduced, and by the cleaning ring and the snap ring, the valve body noise can be further reduced. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a kind of injection molding machine linkage quick pressure relief valve's side view cross-sectional structure schematic diagram of a preferred embodiment of the utility model;

[0014] Fig. 2This is a three-dimensional structural diagram of the insertion rod of a quick-release valve for an injection molding machine according to a preferred embodiment of the present invention.

[0015] Fig. 3 This is an enlarged structural diagram of point A of a preferred embodiment of the injection molding machine linkage quick pressure relief valve.

[0016] Explanation of reference numerals in the attached drawings: 1. Valve body; 2. Flange; 3. Connecting plate; 4. Gasket; 5. Insert rod; 6. Buffer block; 7. First spring; 8. Limiting ring; 9. Annular gasket; 10. Packing seal; 11. Moving rod; 12. Third spring; 13. Limiting block; 14. Cleaning ring; 15. Enlarging groove; 16. Snap ring; 17. Fixing cylinder; 18. Second spring; 19. Piston; 20. Noise reduction sleeve. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Please refer to the following: Figs. 1-3 The diagram shows a quick-release valve for an injection molding machine, comprising a valve body 1 and a flange 2. A connecting plate 3 is fixedly connected to one side of the valve body 1. A gasket 4 contacts one side of the connecting plate 3. A rod 5 is inserted into one side of the gasket 4. A buffer block 6 is fixedly connected to one end of the rod 5. The buffer block 6 has a spindle-shaped structure. By setting the buffer block 6, pressure can be provided to the hydraulic oil, and the spindle-shaped structure can reduce the impact of the hydraulic oil. A first spring 7 is sleeved on the rod 5, and the first spring 7 contacts the gasket 4. An annular gasket 9 contacts one side of the buffer block 6. 9 can improve buffering and reduce noise during continuous contact with buffer block 6. The annular pad 9 is fixedly connected to limit ring 8, which is fixedly connected inside valve body 1. A through hole is opened on the upper side of valve body 1. A fixed cylinder 17 is fixedly connected to the upper side of valve body 1 above the through hole. A second spring 18 is fixedly connected inside the fixed cylinder 17. A piston 19 is fixedly connected to the bottom end of the second spring 18. By setting the through hole, fixed cylinder 17, second spring 18 and piston 19, a damping hole structure can be formed to improve the pressure reduction effect and realize the flow regulation of hydraulic system.

[0019] The inner side of the valve body 1 contacts the cleaning ring 14, which is fixedly connected to one end of the moving rod 11. The moving rod 11 is fixedly connected to the limiting block 13, and the limiting block 13 is in contact with a section of the third spring 12. The third spring 12 is sleeved on the moving rod 11, and the moving rod 11 is movably inserted into the connecting plate 3. By setting the cleaning ring 14 in conjunction with the moving rod 11, the liquid drives the cleaning ring 14 to move under the impact of hydraulic oil, thereby cleaning the adhesive.

[0020] The moving rod 11 is in contact with the packing seal 10, the packing seal 10 is located in the through hole in the adapter disc 3, and the packing seal 10 can block the hydraulic oil from entering the water outlet side of the valve body 1 from the through hole.

[0021] The valve body 1 is provided with an enlarged groove 15, the enlarged groove 15 is located on the outer side of the snap ring 16, the snap ring 16 is fixedly connected to one side of the moving rod 11, and the enlarged groove 15 and the snap ring 16 can increase the diameter of the hydraulic oil discharge end, thereby achieving the effect of reducing noise.

[0022] The noise reduction sleeve 20 is fixedly connected to the outer side of the valve body 1, and is made of rubber, and the noise reduction sleeve 20 can reduce noise by absorbing vibration.

[0023] Working principle: The hydraulic oil enters the valve body 1 from the left side of the valve body 1, is blocked by the buffer block 6, and the pressure is reduced, at the same time, the first spring 7 on one side of the buffer block 6 is pushed to shrink, the hydraulic oil enters the middle part of the valve body 1, and then the hydraulic oil continuously moves, and the piston 19 and the second spring 18 at the through hole on the upper side of the valve body 1 are extruded, so that the flow rate of the fluid is slowed down, a local pressure is formed, and the pressure is reduced, then the hydraulic oil passes through the center of the adapter disc 3, and the cleaning ring 14 is blocked and moves in the valve body 1, at this time, the third spring 12 on the moving rod 11 shrinks, the valve body 1 can be cleaned, and when the hydraulic oil flows to the enlarged groove 15, the noise is reduced due to the increase of the pipe diameter.

[0024] The above is only a preferred embodiment of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principle of the present application, and these improvements and refinements should also be regarded as the protection scope of the present application.

[0025] Other parts not described in the present application are all prior art, and therefore will not be described here.

[0026] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An injection molding machine linkage quick pressure relief valve comprising a valve body (1) and a flange (2), characterized in that, One side of the valve body (1) is fixedly connected with the adapter disc (3), one side of the adapter disc (3) is in contact with the grommet (4), one side of the grommet (4) is inserted with the insertion rod (5), one end of the insertion rod (5) is fixedly connected with the buffer block (6), the buffer block (6) is in a spindle structure, the insertion rod (5) is sleeved with the first spring (7), the first spring (7) is in contact with the grommet (4), one side of the buffer block (6) is in contact with the annular gasket (9), the annular gasket (9) is fixedly connected with the limiting ring (8), the limiting ring (8) is fixedly connected in the valve body (1), the upper side of the valve body (1) is provided with a through hole, the upper side of the valve body (1) is fixedly connected with the fixed cylinder (17), the fixed cylinder (17) is fixedly connected with the second spring (18), the bottom end of the second spring (18) is fixedly connected with the piston (19).

2. A quick pressure relief valve for injection molding machines as defined in claim 1, wherein The moving rod (11) is movably inserted on the adapter disc (3), the third spring (12) is sleeved on the moving rod (11), one end of the third spring (12) is in contact with the limiting block (13), the limiting block (13) is fixedly connected with the moving rod (11), one end of the moving rod (11) is fixedly connected with the cleaning ring (14), the cleaning ring (14) is in contact with the inner side of the valve body (1).

3. A quick exhaust valve for injection molding machines as defined in claim 2 wherein, The through hole is formed in the adapter disc (3), and the packing seal (10) is arranged in the through hole, and the packing seal (10) is in contact with the moving rod (11).

4. A quick exhaust valve for injection molding machines as defined in claim 3 wherein, One side of the moving rod (11) is fixedly connected with the clamping ring (16), the outer side of the clamping ring (16) is in contact with the enlarged groove (15), and the enlarged groove (15) is located in the valve body (1).

5. A quick exhaust valve for injection molding machines as defined in claim 4 wherein, The outer side of the valve body (1) is fixedly connected with the noise reduction sleeve (20), and the noise reduction sleeve (20) is composed of rubber.

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