Flow testing device for cooling water channel of injection mold

Abstract

The utility model relates to the technical field of injection mold testing, in particular to an injection mold cooling water channel flow testing device which comprises a water tank, the top end of the water tank is detachably connected with a testboard through bolts, and a fixing mechanism is arranged in the middle of the testboard. The water conveying pipe and the return pipe are symmetrically and vertically fixed to the inner walls of the two sides of the water tank, and the top ends of the water conveying pipe and the return pipe extend out of the test board and are provided with connecting mechanisms; the measuring pipe is vertically fixed to the side, close to the backflow pipe, of the water tank, and a flow testing mechanism is arranged in the measuring pipe. According to the utility model, the liquid level detection of the floating plate is matched with the distance sensor for use, so that non-contact flow measurement is realized, the problem of pressure drop deviation caused by mechanical resistance of a traditional impeller type flow meter is solved, the actual flow characteristics of a mold cooling water channel are truly reflected by test data, and the measurement precision and reliability are improved.

Description

Technical Field

[0001] This utility model relates to the field of injection mold testing technology, specifically to a device for testing the flow rate of cooling water channels in injection molds. Background Technology

[0002] In injection molding, mold cooling efficiency directly affects product molding cycle and quality stability. As a core component of mold heat exchange, the flow rate of cooling channels is a key indicator for evaluating the performance of the cooling system. Currently, the injection molding industry generally uses an indirect evaluation method combining mold trials with temperature measurement, but lacks direct and quantitative detection methods for cooling channel flow rate.

[0003] The mechanical impeller flowmeters currently used in the industry need to be connected in series to the cooling water circuit during the testing process. The internal rotating parts will generate flow resistance, resulting in a pressure difference deviation between the test conditions and the actual production conditions. This systematic error caused by the structure of the measuring device itself may mask the true flow characteristics of the mold cooling water circuit. Utility Model Content

[0004] The purpose of this invention is to provide a device for testing the flow rate of cooling water channels in injection molds, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A device for testing the flow rate of cooling water channels in injection molds, comprising:

[0007] The water tank has a test platform that is detachably connected to its top by bolts, and a fixing mechanism is set in the middle of the test platform.

[0008] The water supply pipe and return pipe are symmetrical and vertically fixed to the inner walls of both sides of the water tank. The top ends of the water supply pipe and return pipe extend to the outside of the test platform and are equipped with a connecting mechanism.

[0009] The measuring tube is vertically fixed to the side of the water tank near the return pipe, and a flow testing mechanism is installed inside the measuring tube.

[0010] Preferably, the fixing mechanism includes mounting seats symmetrically fixed on both sides of the middle of the top of the test bench, and a clamping cylinder horizontally fixed on the back of the mounting seats, with a clamping plate fixedly connected to the output shaft of the clamping cylinder;

[0011] Preferably, a water pump is fixedly connected to the bottom end of the water supply pipe, and a water pumping pipe is fixedly connected to the other end of the water pump. A water supply pipe and a water drain pipe are fixedly installed at the top and bottom of the front of the water tank, respectively.

[0012] Preferably, the connecting mechanism includes an elbow fixedly connected to the top of the water supply pipe and the return pipe, and a corrugated pipe fixedly connected to the other end of the elbow, with a pipe joint fixedly connected to the end of the corrugated pipe away from the elbow.

[0013] Preferably, the flow testing mechanism includes a connecting shell fixedly connected to the bottom end of the return pipe, and a distance sensor vertically fixed to the top end of the measuring pipe. The output end of the connecting shell is connected to the inside of the bottom end of the measuring pipe. Pads are fixedly installed on both the upper and lower ends of the measuring pipe. A vertical guide rod is fixedly installed between the upper and lower pads. A float plate is movably sleeved between the two guide rods. Several through slots are opened through the middle outer side of the float plate at equal arcs.

[0014] Preferably, the bottom end of the measuring tube is fixedly connected to a water outlet pipe via an electric valve.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This injection mold cooling water channel flow test device, through the combined use of a floating plate liquid level detection and a distance sensor, realizes non-contact flow measurement, solves the pressure drop deviation problem caused by mechanical resistance in traditional impeller flow meters, ensures that the test data truly reflects the actual flow characteristics of the mold cooling water channel, and improves measurement accuracy and reliability.

[0017] 2. This injection mold cooling water channel flow test device, through the flexible connection of the corrugated pipe and the cooperation of the clamping cylinder, realizes the rapid connection and reliable sealing of the injection mold cooling water channel interface, which significantly improves the adaptability and ease of operation of the test device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall main structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the measuring tube installation structure of this utility model;

[0020] Figure 3 This is a schematic cross-sectional view of the measuring tube of this utility model;

[0021] Figure 4 For the present utility model Figure 3 Enlarged diagram of point A in the middle.

[0022] In the diagram: 1. Water tank; 2. Test bench; 3. Water supply pipe; 4. Return pipe; 5. Measuring pipe; 6. Mounting base; 7. Clamping cylinder; 8. Clamping plate; 9. Water pump; 10. Pumping pipe; 11. Water supply pipe; 12. Drainage pipe; 13. Elbow; 14. Corrugated pipe; 15. Pipe joint; 16. Connecting shell; 17. Distance sensor; 18. Pad; 19. Guide rod; 20. Float plate; 21. Through groove; 22. Electric valve; 23. Water outlet pipe. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figure 1-4 As shown, this utility model provides a technical solution:

[0025] A device for testing the flow rate of cooling water channels in injection molds includes a water tank 1, with a test platform 2 detachably connected to its top via bolts. A fixing mechanism is provided in the middle of the test platform 2, comprising mounting seats 6 symmetrically fixed to both sides of the top center of the test platform 2, and a clamping cylinder 7 horizontally fixed to the back of the mounting seats 6. A clamping plate 8 is fixedly connected to the output shaft of the clamping cylinder 7. A water pump 9 is fixedly connected to the bottom end of a water supply pipe 3, and a suction pipe 10 is fixedly connected to the other end of the water pump 9. A water supply pipe 11 and a drain pipe 12 are fixedly installed at the upper and lower ends of the front of the water tank 1, respectively. A water supply pipe 3 and a return pipe 4 are symmetrically and vertically fixed to the inner walls of both sides of the water tank 1. The top ends of the water supply pipe 3 and the return pipe 4 extend to the outside of the test platform 2 and are provided with a connecting mechanism, which includes an elbow 13 fixedly connected to the top ends of the water supply pipe 3 and the return pipe 4. And a corrugated pipe 14 fixedly connected to the other end of the elbow 13, a pipe joint 15 fixedly connected to the end of the corrugated pipe 14 away from the elbow 13, a measuring pipe 5, which is vertically fixed to the side of the water tank 1 near the return pipe 4, a flow testing mechanism is provided inside the measuring pipe 5, the flow testing mechanism includes a connecting shell 16 fixedly connected to the bottom end of the return pipe 4, and a distance sensor 17 fixedly fixed to the top end of the measuring pipe 5, the output end of the connecting shell 16 is connected to the bottom end of the measuring pipe 5, pads 18 are fixedly installed on both the upper and lower ends of the measuring pipe 5, a vertical guide rod 19 is fixedly installed between the upper and lower pads 18, a float plate 20 is movably sleeved between the two guide rods 19, and several through slots 21 are opened through the middle outer side of the float plate 20 at the same arc, and the bottom end of the measuring pipe 5 is fixedly connected to the outlet pipe 23 through an electric valve 22.

[0026] In this embodiment, the flexible connection of the bellows 14 and the use of the clamping cylinder 7 together enable the rapid connection and reliable sealing of the cooling water channel interface of the injection mold, which significantly improves the adaptability and ease of operation of the testing device.

[0027] Furthermore, by using the float plate 20 for liquid level detection in conjunction with the distance sensor 17, non-contact flow measurement is achieved, which solves the pressure drop deviation problem caused by mechanical resistance in traditional impeller flow meters, ensuring that the test data truly reflects the actual flow characteristics of the mold cooling water channel, and improving measurement accuracy and reliability.

[0028] Working principle: First, the injection mold to be tested is placed in the middle of the test bench 2. The clamping cylinder 7 is activated to push the clamping plate 8 to firmly clamp and fix the mold. Due to the flexible connection of the corrugated pipe 14, the system can achieve a reliable connection without strict alignment. After mechanical fixing is completed, the pipe connector 15 at the top of the water supply pipe 3 is connected to the water inlet of the mold, and the pipe connector 15 at the top of the return pipe 4 is connected to the water outlet of the mold. After the connection is completed, water is injected into the water tank 1 from the water supply pipe 11 to the set liquid level. The water pump 9 is activated to pump the water in the water tank 1 into the mold cooling water channel through the water supply pipe 3 via the water suction pipe 10. Under the action of system pressure, the water flows through the cooling water channel inside the mold and then returns to the water tank 1 through the return pipe 4. The connecting shell 16 at the end of the return pipe 4 guides the water flow to the bottom of the measuring pipe 5. The water flow smoothly pushes the floating plate 20 to rise vertically along the guide rod 19. At this time, the distance sensor 17 collects the displacement signal of the floating plate 20 in real time. The control system automatically calculates the instantaneous flow rate based on the change in liquid level height per unit time and the constant cross-sectional area of ​​the measuring pipe 5. Throughout the test, the electric valve 22 remains closed to maintain a stable pressure environment inside the measuring pipe 5. After the test cycle ends, the electric valve 22 is opened to drain the water in the measuring pipe 5 back to the water tank 1 to complete the medium recovery. When changing the mold, it is only necessary to stop the water pump 9 and operate the clamping cylinder 7 to retract the clamping plate 8, so that the corrugated pipes 14 at both ends can be disassembled to achieve quick mold replacement.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An injection mold cooling channel flow test apparatus, characterized by: include A water tank (1) is detachably connected to a test platform (2) by bolts at its top, and a fixing mechanism is provided in the middle of the test platform (2); Water supply pipe (3) and return pipe (4) are symmetrical and vertically fixed to the inner walls of both sides of the water tank (1). The top ends of the water supply pipe (3) and return pipe (4) extend to the outside of the test bench (2) and are provided with a connecting mechanism. The measuring tube (5) is vertically fixed to the side of the water tank (1) near the return pipe (4), and the measuring tube (5) is equipped with a flow testing mechanism.

2. The injection mold cooling channel flow rate testing device of claim 1, wherein: The fixing mechanism includes mounting seats (6) symmetrically fixed on both sides of the top center of the test bench (2), and clamping cylinders (7) horizontally fixed on the back of the mounting seats (6). The output shaft of the clamping cylinders (7) is fixedly connected to a clamping plate (8).

3. The injection mold cooling channel flow rate testing device of claim 1, wherein: A water pump (9) is fixedly connected to the bottom end of the water supply pipe (3), and a water pump (10) is fixedly connected to the other end of the water pump (9). A water supply pipe (11) and a drain pipe (12) are fixedly installed on the upper and lower ends of the front of the water tank (1), respectively.

4. The injection mold cooling water channel flow rate testing device according to claim 3, characterized in that: The connection mechanism includes an elbow (13) fixedly connected to the top of the water supply pipe (3) and the return pipe (4), and a corrugated pipe (14) fixedly connected to the other end of the elbow (13). A pipe joint (15) is fixedly connected to the end of the corrugated pipe (14) away from the elbow (13).

5. The injection mold cooling channel flow rate testing device of claim 1, wherein: The flow testing mechanism includes a connecting shell (16) fixedly connected to the bottom end of the return pipe (4) and a distance sensor (17) vertically fixed to the top end of the measuring pipe (5). The output end of the connecting shell (16) is connected to the bottom end of the measuring pipe (5). Pads (18) are fixedly installed on both the upper and lower ends of the measuring pipe (5). A vertical guide rod (19) is fixedly installed between the upper and lower pads (18). A float plate (20) is movably sleeved between the two guide rods (19). Several through slots (21) are opened through the middle outer side of the float plate (20) at the same arc.

6. The injection mold cooling water channel flow rate testing device according to claim 1, characterized in that: The bottom end of the measuring tube (5) is fixedly connected to the water outlet pipe (23) via an electric valve (22).

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