CN218803840U

CN218803840U - Pressure sensor capable of measuring injection mold cavity

Info

Publication number: CN218803840U
Application number: CN202223042003.0U
Authority: CN
Inventors: 赵克伟
Original assignee: Nanjing Shuzhi Micro Sensing Technology Co ltd
Current assignee: Nanjing Shuzhi Micro Sensing Technology Co ltd
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-04-07
Anticipated expiration: 2032-11-16

Abstract

The utility model discloses a pressure sensor of measurable quantity injection mould die cavity relates to force transducer technical field, for solving current pressure sensor when carrying out the pressure measurement, because of inside cavity is great, can't have timely response to small change to lead to the insufficient problem of sensing data precision. The pressure sensor comprises a pressure sensor body, a rotating disc, a first sealing rubber ring, a second sealing rubber ring, a sealing rubber layer, a reserved groove and an inflation end mouth, wherein the rotating disc is installed above the pressure sensor body and is in threaded rotation connection with the pressure sensor body through a second threaded wall, two limiting buckling blocks are arranged on two sides of the upper portion of the inner wall of the rotating disc and are formed integrally with the rotating disc, the first sealing rubber ring is arranged between the rotating disc and the pressure sensor body, the sealing rubber layer is installed above the rotating disc and is fixedly connected with the rotating disc, the reserved groove is formed inside the sealing rubber layer, and the inflation end mouth is arranged inside the reserved groove.

Description

Pressure sensor capable of measuring injection mold cavity

Technical Field

The utility model relates to a force sensor technical field specifically is a pressure sensor of measurable quantity injection mould die cavity.

Background

A force sensor converts the magnitude of the force into an associated electrical signal. Forces are the direct cause of the change in motion of the material. The force sensor can detect mechanical quantities such as tension, pressure, weight, torque, internal stress and strain. The specific devices comprise metal strain gauges, pressure sensors and the like, and become indispensable core components in power equipment, engineering machinery, various working machines and industrial automation systems. The force sensor is mainly composed of three parts: 1. force sensitive elements (i.e., elastomers, common materials being aluminum alloys, alloy steels, and stainless steels). 2. A switching element (most commonly a resistive strain gauge). 3. And a circuit part (generally, an enameled wire, a pcb (printed circuit board) and the like).

For example, publication No. 201721601532.6 (a pressure measuring device and an injection mold for use in a mold cavity), includes: at least one cover half, the movable mould, every movable mould benevolence and every cover half benevolence cooperate and form the die cavity that is used for injection moulding, offer the through-hole that is used for the thimble to pass in every movable mould benevolence, the below of thimble is provided with a pressure sensor, the platform terminal surface that hangs of thimble links to each other with pressure sensor, pressure sensor's one end is connected with the cable of transmission data, cable and data acquisition equipment electric connection, data acquisition equipment passes through wire and monitoring facilities electric connection, pressure sensor gathers pressure, transmit for data acquisition equipment, data show on monitoring facilities after data acquisition equipment handles, with the pressure information who observes pressure sensor department. The mold cavity is designed and provided with a pressure sensor device which can measure the pressure of the plastic from a nozzle of the injection molding machine to a certain position of the mold cavity in the processes of injection molding, mold filling, pressure maintaining and cooling.

However, when the pressure sensor measures pressure, the internal cavity is large, and cannot sense small changes in time, so that the problem of insufficient accuracy of sensing data is caused; thus, the present need is not met, for which we propose a pressure sensor that can measure the cavity of an injection mold.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pressure sensor of measurable quantity injection mould die cavity to the pressure sensor who provides in solving above-mentioned background art is carrying out the pressure measurement when, and is great because of inside cavity, can't have timely response to small change, thereby leads to the insufficient problem of sensing data precision.

In order to achieve the above object, the utility model provides a following technical scheme: a pressure sensor that can measure a mold cavity of an injection mold, comprising: the pressure sensor comprises a pressure sensor body, wherein a holding connecting rod is arranged on one side of the pressure sensor body, the holding connecting rod is in threaded rotary connection with the pressure sensor body through a first threaded wall, and a data transmission line is arranged at one end of the holding connecting rod;

further comprising:

the rotating disc is installed above the pressure sensor body and is in threaded rotating connection with the pressure sensor body through a second threaded wall, two limiting buckling blocks are arranged on two sides above the inner wall of the rotating disc, the two limiting buckling blocks are integrally formed with the rotating disc, and a first sealing rubber ring is arranged between the rotating disc and the pressure sensor body;

the sealing glue layer is installed above the rotating disc, the rotating disc is fixedly connected with the sealing glue layer, a reserved groove is formed in the sealing glue layer, an inflation end nozzle is arranged in the reserved groove, and the inflation end nozzle is fixedly connected with the sealing glue layer in a hot melting mode.

Preferably, the one end of holding the connecting rod outer wall is provided with unsmooth clutch blocks, and unsmooth clutch blocks is provided with a plurality of, a plurality of unsmooth clutch blocks all with hold the connecting rod outer wall integral type and form.

Preferably, the inside of holding the connecting rod is provided with first interior cavity, the inside of first interior cavity is provided with the software glue film, and the software glue film is provided with two, sets up the upside and the downside at first interior cavity.

Preferably, two the inside of software glue film all is provided with the cavity in the second, two the inboard of software glue film all is provided with the grip block, the inside at the cavity in the second is installed to the grip block, the inboard of grip block is provided with the powerful spring of centre gripping, and the one end and the grip block fixed connection of the powerful spring of centre gripping.

Preferably, the lower terminal surface of pressure sensor body is provided with shelters from the apron, shelter from the apron and pass through hex bolts and pressure sensor body threaded connection, and hex bolts is provided with four, the inside of sheltering from apron outside round is provided with the preformed hole groove, and the preformed hole groove is provided with four, four hex bolts all installs the inside in the preformed hole groove, the pressure sensor body with shelter from and be provided with the second sealing rubber circle between the apron.

Preferably, the inboard of sealing glue layer is provided with the cavity in the third, the up end of pressure sensor body is provided with sensitive test element, and sensitive test element lower extreme department and pressure sensor body electric connection, sensitive test element installs the inside at the cavity in the third.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a sealed glue film and the sealed glue film that sets up on the rolling disc and the rolling disc that set up, let outside air charging equipment pass through the inflation end mouth, fill sealed glue film inside, can be so that sealed glue film is inside to be full of by atmospheric pressure, when the inside of injection mould die cavity takes place slight pressure value and changes, also can cause the change to the sealed glue film that is full of pressure, when letting sealed glue film change, can reach by sensitive test element seizure, thereby carry out the transmission of data, avoid pressure sensor when carrying out the pressure measurement, because of inside cavity is great, can't have timely response to small change, thereby lead to the insufficient problem of sensing data precision.

2. Through the software glue film, grip block and the powerful spring of centre gripping that the inside of holding the connecting rod set up, let data transmission line run through when holding the connecting rod, the grip block of setting can carry out the centre gripping through the powerful spring of centre gripping to data transmission line, prevents that the circuit from rocking in its inside to and the unsmooth clutch blocks of the outer wall setting of holding the connecting rod, frictional force that can effectual enhancement article held reduces the probability that drops.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the internal structure of the rotating disc of the present invention;

fig. 3 is a schematic structural view of the lower end surface of the pressure sensor body according to the present invention;

FIG. 4 is a schematic view of the internal structure of the holding connecting rod of the present invention;

fig. 5 is a schematic view of the internal structure at a position a of the present invention;

in the figure: 1. a pressure sensor body; 101. a first sealing rubber ring; 102. a sensitive test element; 103. a shielding cover plate; 104. a second sealing rubber ring; 105. a hexagon bolt; 106. reserving a hole groove; 2. a holding connecting rod; 201. a concave-convex friction block; 202. a first threaded wall; 203. a first inner cavity; 204. a soft glue layer; 205. a second inner cavity; 206. a clamping plate; 207. clamping a strong spring; 3. a data transmission line; 4. rotating the disc; 401. sealing the adhesive layer; 402. reserving a groove; 403. an inflatable tip nozzle; 404. a third inner cavity; 405. a second threaded wall; 406. and a limiting buckle block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example 1

Referring to fig. 1-5, the present invention provides an embodiment: a pressure sensor for measuring the pressure in a mold cavity of an injection mold, comprising: the pressure sensor comprises a pressure sensor body 1, wherein a holding connecting rod 2 is arranged on one side of the pressure sensor body 1, the holding connecting rod 2 is in threaded rotary connection with the pressure sensor body 1 through a first threaded wall 202, and a data transmission line 3 is arranged at one end of the holding connecting rod 2;

further comprising:

the rotating disc 4 is installed above the pressure sensor body 1, the rotating disc 4 is in threaded rotating connection with the pressure sensor body 1 through a second threaded wall 405, two limiting buckle blocks 406 are arranged on two sides above the inner wall of the rotating disc 4, the two limiting buckle blocks 406 are arranged, the two limiting buckle blocks 406 are integrally formed with the rotating disc 4, and a first sealing rubber ring 101 is arranged between the rotating disc 4 and the pressure sensor body 1;

sealing glue layer 401, it is installed in the top of rolling disc 4, rolling disc 4 and sealing glue layer 401 fixed connection, and the inside of sealing glue layer 401 is provided with preformed groove 402, and the inside of preformed groove 402 is provided with inflatable tip mouth 403, and inflatable tip mouth 403 and the fixed hot melt of sealing glue layer 401 are connected.

The inner side of the sealant layer 401 is provided with a third inner cavity 404, the upper end surface of the pressure sensor body 1 is provided with a sensitive test element 102, the lower end of the sensitive test element 102 is electrically connected with the pressure sensor body 1, and the sensitive test element 102 is installed inside the third inner cavity 404.

Example 2

Referring to fig. 1 and 3-5, a plurality of concave-convex friction blocks 201 are disposed at one end of the outer wall of the holding connecting rod 2, and the plurality of concave-convex friction blocks 201 are integrally formed with the outer wall of the holding connecting rod 2.

Can let the staff when convenient holding, increase frictional force to reduce the probability that the article drops.

The inside of the holding connecting rod 2 is provided with a first inner cavity 203, the inside of the first inner cavity 203 is provided with two soft rubber layers 204, and the two soft rubber layers 204 are arranged on the upper side and the lower side of the first inner cavity 203.

A second inner cavity 205 is arranged inside each of the two soft rubber layers 204, a clamping plate 206 is arranged on the inner side of each of the two soft rubber layers 204, the clamping plate 206 is installed inside the second inner cavity 205, a clamping strong spring 207 is arranged on the inner side of the clamping plate 206, and one end of the clamping strong spring 207 is fixedly connected with the clamping plate 206.

The grip block 206 that sets up and the powerful spring 207 of centre gripping of grip block 206 inboard let data transmission line 3 when running through, can make inside the connecting rod 2 of gripping have spacing fixed effect to it, avoid rocking of circuit unstable.

The lower terminal surface of pressure sensor body 1 is provided with shelters from apron 103, shelters from apron 103 and passes through hex bolts 105 and 1 threaded connection of pressure sensor body, and hex bolts 105 are provided with four, and the inside of sheltering from apron 103 outside round is provided with preformed hole groove 106, and preformed hole groove 106 is provided with four, and four hex bolts 105 are all installed in the inside of preformed hole groove 106, and pressure sensor body 1 and shelter from and be provided with second sealing rubber circle 104 between the apron 103.

The setting of second sealing rubber circle 104 can shelter from the effect of apron 103 when sealed by effectual reinforcing, and hexagon bolt 105's connected mode lets connect and dismantle comparatively conveniently.

The working principle is as follows: the device is when using, run through data transmission line 3 and grip connecting rod 2, pass and grip connecting rod 2 inside, the grip block 206 that sets up can carry out the centre gripping through centre gripping powerful spring 207 to data transmission line 3, prevent that the circuit from rocking at its inside, place pressure sensor body 1 before injection mould die cavity is inside, outside inflation equipment passes through inflatable tip mouth 403, fill sealant layer 401 is inside, can be so that sealant layer 401 is inside to be full of by atmospheric pressure, when the inside of injection mould die cavity takes place slight pressure value and changes, also can cause the change to sealant layer 401 that is full of pressure, when letting sealant layer 401 change, can be in time caught by sensitive test element 102, thereby carry out the transmission of data.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A pressure sensor capable of measuring a mold cavity of an injection mold comprises a pressure sensor body (1), wherein a holding connecting rod (2) is arranged on one side of the pressure sensor body (1), the holding connecting rod (2) is in threaded rotary connection with the pressure sensor body (1) through a first threaded wall (202), and a data transmission line (3) is arranged at one end of the holding connecting rod (2);

the method is characterized in that: further comprising:

the pressure sensor comprises a pressure sensor body (1), a rotating disc (4) and a first sealing rubber ring (101), wherein the rotating disc (4) is installed above the pressure sensor body (1), the rotating disc (4) is in threaded rotary connection with the pressure sensor body (1) through a second threaded wall (405), two limiting buckle blocks (406) are arranged on two sides above the inner wall of the rotating disc (4), the two limiting buckle blocks (406) are integrally formed with the rotating disc (4), and the first sealing rubber ring (101) is arranged between the rotating disc (4) and the pressure sensor body (1);

sealing glue layer (401), it is installed the top of rolling disc (4), rolling disc (4) and sealing glue layer (401) fixed connection, the inside of sealing glue layer (401) is provided with reservation groove (402), the inside of reservation groove (402) is provided with inflatable tip mouth (403), and inflatable tip mouth (403) and sealing glue layer (401) fixed hot melt are connected.

2. The pressure sensor of claim 1, wherein the pressure sensor is configured to measure the pressure of the mold cavity of an injection mold, and wherein: the one end of holding connecting rod (2) outer wall is provided with unsmooth clutch blocks (201), and unsmooth clutch blocks (201) are provided with a plurality of, a plurality of unsmooth clutch blocks (201) all with hold connecting rod (2) outer wall integral type and form.

3. The pressure sensor of claim 1, wherein the pressure sensor is configured to measure the pressure of the mold cavity of an injection mold, and wherein: the utility model discloses a handle connecting rod, including holding connecting rod (2), the inside of holding connecting rod (2) is provided with first interior cavity (203), the inside of first interior cavity (203) is provided with software glue film (204), and software glue film (204) are provided with two, set up upside and the downside in first interior cavity (203).

4. A pressure sensor for measuring the pressure in a mold cavity of an injection mold as defined in claim 3, wherein: two the inside of software glue film (204) all is provided with cavity (205) in the second, two the inboard of software glue film (204) all is provided with grip block (206), the inside at cavity (205) in the second is installed in grip block (206), the inboard of grip block (206) is provided with centre gripping powerful spring (207), and the one end and grip block (206) fixed connection of centre gripping powerful spring (207).

5. The pressure sensor of claim 1, wherein the pressure sensor is configured to measure the pressure of the mold cavity of an injection mold, and wherein: the lower terminal surface of pressure sensor body (1) is provided with shelters from apron (103), shelter from apron (103) through hex bolts (105) and pressure sensor body (1) threaded connection, and hex bolts (105) are provided with four, the inside of sheltering from apron (103) outside round is provided with preformed hole groove (106), and preformed hole groove (106) are provided with four, four hex bolts (105) are all installed in the inside of preformed hole groove (106), pressure sensor body (1) with shelter from and be provided with second sealing rubber circle (104) between apron (103).

6. The pressure sensor of claim 1, wherein the pressure sensor is configured to measure the pressure of the mold cavity of an injection mold, and wherein: the inboard of sealant layer (401) is provided with third interior cavity (404), the up end of pressure sensor body (1) is provided with sensitive test element (102), and sensitive test element (102) lower extreme department and pressure sensor body (1) electric connection, the inside at third interior cavity (404) is installed in sensitive test element (102).