An injection mold pressure testing device

Abstract

The present invention discloses an injection mold pressure testing device, which relates to the technical field of mold pressure detection. It includes a base, on the top of the base is fixedly installed a workbench, and on the top of the workbench is fixedly installed a fixing frame. And on the top of the fixing frame is fixedly installed a hydraulic push rod. At the same time, the movable end of the hydraulic push rod passes through the fixing frame and is fixedly installed with a movable plate. Moreover, on both sides of the top of the movable plate are symmetrically installed guide rods, and both guide rods are slidably connected to the fixing frame. It also includes: two groups of pressure sensors, fixedly installed at the bottom of the movable plate; so that when testing a larger mold, the contact area with the mold can be enlarged, avoiding uneven pressure caused by the contact area, avoiding affecting the accuracy of the injection mold test, and can be used for blow molding molds of different sizes, improving the applicability. And when performing pressure testing on a larger mold, excessive pressure can be avoided, preventing unnecessary damage and wear to the mold.

Description

Technical Field

[0001] The present invention relates to the technical field of mold pressure detection, and specifically to an injection mold pressure testing device. Background Art

[0002] Injection molds can form multiple plastic parts with complex structures, precise dimensions, and good internal quality at one time. Therefore, they are widely used in the production of plastic products. The injection mold process involves injecting the heat-melted material into the mold cavity under high pressure. After cooling and solidification, the formed product is obtained. After production, injection molds need to be subjected to pressure testing.

[0003] For example, in an automotive parts injection mold pressure testing device with the publication number CN218157284U, when limiting the universal wheel, the cylinder drives the support plate to move downward and contact the ground, so that the universal wheel will not move randomly. When limiting the universal wheel, only starting the cylinder can complete the operation. The whole operation process is relatively convenient and improves work efficiency. The screw rotates to drive the slider to move outward, and the slider drives the test bench to move outward, so that there is no obstruction above the test bench, which is convenient for the staff to place the automotive parts to be side-viewed on the side-view bench. Then, the side-view bench is moved to the lower part of the test component through the screw for side-view, which improves the practicability of the device. However, in actual use, the area of the pressing plate on the test component is fixed. When testing a larger blow molding mold, the contact area between the pressing plate on the test component and the blow molding mold is small. During testing, due to the small contact area, the pressure exerted by the pressing plate on the blow molding mold is not uniform, and the pressure cannot be evenly applied to the top of the mold, which is likely to affect the test accuracy. Moreover, when testing a larger mold, the pressure released will also be large. In the case of a small pressing plate area, the pressure exerted by the pressing plate on the mold is large, which may cause unnecessary damage and wear to the mold, and there are certain usage defects.

[0004] Therefore, we propose an injection mold pressure testing device to solve the problems raised above. Summary of the Invention

[0005] The purpose of the present invention is to provide an injection mold pressure testing device to solve the problems in the above background art, that is, the area of the pressing plate on the test component is fixed. When testing a larger blow molding mold, the contact area between the pressing plate on the test component and the blow molding mold is small. During testing, due to the small contact area, the pressure exerted by the pressing plate on the blow molding mold is not uniform, and the pressure cannot be evenly applied to the top of the mold, which is likely to affect the test accuracy. Moreover, when testing a larger mold, the pressure released will also be large. In the case of a small pressing plate area, the pressure exerted by the pressing plate on the mold is large, which may cause unnecessary damage and wear to the mold, and there are certain usage defects.

[0006] To achieve the above object, the present invention provides the following technical solution: An injection mold pressure testing device includes a base, on the top of the base is fixedly installed a workbench, and on the top of the workbench is fixedly installed a fixing frame, and on the top of the fixing frame is fixedly installed a hydraulic push rod. At the same time, the movable end of the hydraulic push rod passes through the fixing frame and is fixedly installed with a movable plate. Moreover, on both sides of the top of the movable plate are symmetrically installed guide rods, and both of the two guide rods are slidably connected to the fixing frame;

[0007] It further includes:

[0008] Pressure sensors, fixedly installed in two groups at the bottom of the movable plate, and at the bottom of both groups of pressure sensors are fixedly installed fixing columns;

[0009] A test component, arranged below the movable plate, and the test component includes a pressing plate;

[0010] A fixing component, arranged inside the workbench;

[0011] The pressing plate is fixedly installed at the bottom ends of the two groups of fixing columns. Inside the pressing plate are symmetrically opened sliding grooves, and inside the sliding grooves are slidably connected sliding plates. And on one side of the bottom of both sliding plates are respectively penetrated with through grooves. At the same time, on both sides of the inside of the pressing plate are symmetrically slidably connected movable rods. And on the upper part of the outside of both groups of movable rods are fixedly installed fixing blocks, and the movable rods are slidably connected with the through grooves;

[0012] Support frames, symmetrically installed on one side of the top of the pressing plate where the two groups of movable rods are located, and there are two groups. Between each group of two support frames is rotatably connected with a roller on one side. And on the outside of the roller is rotatably connected a connecting rope, and both ends of the connecting rope are respectively fixedly connected with the movable rod and the sliding plate.

[0013] Preferably, inside the pressing plate between the two sliding grooves is opened an installation groove. And on the side of both sliding plates close to each other are fixedly installed fixing rods. And on the side of both fixing rods close to each other are fixedly installed racks. At the same time, inside the installation groove are symmetrically installed positioning blocks, and the fixing rods are slidably connected with the positioning blocks. And inside the installation groove is rotatably connected a rotating shaft, and on the outside of the rotating shaft is fixedly installed a rotating gear, and the two racks are meshed with the rotating gear.

[0014] By adopting the above technical solution, after the two sliding plates move, they can drive the rotating shaft to rotate.

[0015] Preferably, the top end of the rotating shaft passes through the pressing plate and is fixedly installed with a runner, and on both sides of the runner are symmetrically installed pulling ropes, and on both of the two pulling ropes are provided with tension sensors.

[0016] By adopting the above technical solution, after the rotating shaft rotates, it can pull the pulling ropes to move.

[0017] Preferably, two groups of positioning rods are symmetrically installed on both sides of the pressing plate, and a positioning plate is slidably connected to the outer side of each group of two positioning rods. A telescopic spring is sleeved on the outer side of each of the two positioning rods. One end of the telescopic spring is fixedly connected to the positioning plate, and the other end of the telescopic spring is fixedly connected to the positioning rod.

[0018] By adopting the above technical solution, the positioning plate can be automatically reset after moving.

[0019] Preferably, connecting rods are symmetrically and slidably connected inside the positioning plate. One end of each of the two connecting rods is fixedly installed with a moving plate. A tension spring is sleeved on the outer side of each of the two connecting rods. One end of the tension spring is fixedly connected to the positioning plate, and the other end of the tension spring is fixedly installed with a mounting block, and the mounting block is fixedly connected to the connecting rod.

[0020] By adopting the above technical solution, the moving plate can still move after the positioning plate fits the mold, which is convenient for positioning molds of different sizes.

[0021] Preferably, the ends of the two pull ropes away from the runner are respectively fixedly connected to the two moving plates.

[0022] By adopting the above technical solution, the pull rope can pull the positioning plate to move after moving, which is convenient for calibrating and positioning the mold.

[0023] Preferably, the fixing assembly includes a rectangular groove opened inside the workbench. A bidirectional lead screw is rotatably connected inside the rectangular groove. One end of the bidirectional lead screw passes through the workbench and is fixedly installed with a handwheel. Movable seats are symmetrically sleeved on the outer side of the bidirectional lead screw. Clamping plates are symmetrically installed on the tops of the two movable seats. Moving grooves are symmetrically opened above the rectangular groove on the top of the workbench, and the clamping plates are slidably connected to the moving grooves.

[0024] By adopting the above technical solution, it is convenient to fix the mold during testing, and it can ensure that the mold is centered with the pressing plate, which is convenient for testing.

[0025] Preferably, limiting rods are fixedly installed on one side of each group of clamping plates, and the limiting rods are slidably connected to the fixing frame.

[0026] By adopting the above technical solution, the movement of the clamping plate can be limited, and the stability of the movement of the clamping plate can be improved.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: For this injection mold pressure testing device, a testing component is provided below the movable plate, so that when testing a larger mold, the contact area with the mold can be enlarged, avoiding uneven pressure caused by the contact area and affecting the accuracy of the injection mold test. Moreover, it can be used for blow molds of different sizes, improving the applicability. And when conducting a pressure test on a larger mold, excessive pressure can be avoided, preventing unnecessary damage and wear to the mold;

[0028] 1. A testing component is provided below the movable plate. When conducting a pressure test on an injection mold, place the mold on the top of the workbench and start the hydraulic push rod to descend so that the bottom of the pressing plate contacts the mold. If the mold is small, the movable rod does not contact the mold. If the mold is large, the movable plate drives the pressing plate to descend so that the bottom end of the movable rod contacts the mold. Then, make the pressing plate continue to descend, and thus the movable rod slides on the pressing plate and also slides in the through groove. After the movable rod moves, it can pull up the connecting rope, causing the connecting rope to drive the roller to rotate. Furthermore, the sliding plate can be pulled to move through the connecting rope. The sliding plate extends out in the sliding groove. Therefore, when testing a larger mold, the bottoms of the pressing plate and the two sliding plates are both in contact with the mold, which can enlarge the range of contact between the pressure and the mold, making the pressure applied on the mold more uniform and avoiding the influence of uneven pressure on the test accuracy. When testing molds of different sizes, there is no need to replace pressing plates of different sizes, avoiding the need to calibrate the values separately after replacement. Through the testing component, when testing a larger mold, the contact area with the mold can be enlarged, avoiding uneven pressure caused by the contact area and affecting the accuracy of the injection mold test. Moreover, it can be used for blow molds of different sizes, improving the applicability. And when conducting a pressure test on a larger mold, excessive pressure can be avoided, preventing unnecessary damage and wear to the mold;

[0029] 2. When testing a larger mold, the two sliding plates move away from each other to drive the fixed rod to move. After the fixed rod moves, it can drive the rack to move. After the rack moves, it can drive the rotating shaft to rotate by engaging with the rotating gear. The rotation of the rotating shaft can drive the rotating wheel to rotate. The elastic potential energy of the stretching spring is greater than that of the telescopic spring. After the rotating wheel rotates, it can pull the moving plate to move by pulling the pull rope, and then pull the positioning plate to move. The positioning plate moves and fits with the front and rear sides of the mold, so that the mold can be pushed to move slightly on the workbench through the positioning plate, so that the center of the mold can be on the same straight line as the center of the pressing plate. If the pull rope continues to move, it can pull the moving plate to move, drive the connecting rod to slide on the positioning plate and stretch the stretching spring. The tension of the pull rope can be obtained through the tension sensor, and the pressure value can be obtained according to the value on the pressure sensor, so that the mold can be positioned and calibrated after positioning, avoiding the mold from being skewed and affecting the accuracy of the mold pressure test;

[0030] 3. A fixing component is arranged inside the workbench. When testing the mold, the front and rear sides of the mold are positioned through the positioning plate. At this time, the hand wheel is rotated to drive the bidirectional lead screw to rotate. After the bidirectional lead screw rotates, it can drive the two movable seats to approach at the same time, so that the movable seats drive the clamping plates to move. The clamping plates slide in the moving grooves for limiting, and the limiting rods slide on the fixing frames when the clamping plates move, further limiting the movement of the clamping plates and improving the stability of the movement of the clamping plates, so that the left and right sides of the mold can be positioned, facilitating the fixing of the mold during testing and ensuring that the center of the mold is aligned with the center of the pressing plate, which is convenient for testing. Description of the Drawings

[0031] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 is a schematic diagram of the structure of the testing component of the present invention;

[0033] Figure 3 is a schematic diagram of the internal structure of the pressing plate of the present invention;

[0034] Figure 4 is of the present invention Figure 3 is an enlarged schematic diagram of area A in the present invention;

[0035] Figure 5 is a three-dimensional schematic diagram of the pressing plate of the present invention;

[0036] Figure 6 is a three-dimensional schematic diagram of the pressing plate of the present invention from another perspective;

[0037] Figure 7 is a three-dimensional schematic diagram of the pressing plate of the present invention from another perspective;

[0038] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure of area B in the present invention;

[0039] Figure 9 Schematic diagram of the fixed component structure of the present invention.

[0040] In the figure: 1, base; 101, workbench; 102, fixing frame; 103, hydraulic push rod; 104, movable plate; 105, guide rod; 106, pressure sensor; 107, fixing column; 2, test component; 201, pressing plate; 202, sliding groove; 203, sliding plate; 2031, through groove; 204, movable rod; 205, fixing block; 206, support frame; 207, roller; 208, connecting rope; 209, installation groove; 210, fixing rod; 211, rack; 212, positioning block; 213, rotating shaft; 214, rotating gear; 215, runner; 216, positioning rod; 217, positioning plate; 218, telescopic spring; 219, connecting rod; 220, moving plate; 221, tension spring; 222, installation block; 223, tension; 224, tension sensor; 3, fixing component; 301, rectangular groove; 302, bidirectional lead screw; 303, hand wheel; 304, movable seat; 305, clamping plate; 306, moving groove; 307, limiting rod. Specific embodiments

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] Please refer to Figures 1-9 , the present invention provides a technical solution: an injection mold pressure testing device, including a base 1, a workbench 101 is fixedly installed on the top of the base 1, and a fixing frame 102 is fixedly installed on the top of the workbench 101, and a hydraulic push rod 103 is fixedly installed on the top of the fixing frame 102. At the same time, the movable end of the hydraulic push rod 103 passes through the fixing frame 102 and is fixedly installed with a movable plate 104. Moreover, guide rods 105 are symmetrically installed on both sides of the top of the movable plate 104, and both guide rods 105 are slidably connected to the fixing frame 102;

[0043] It further includes:

[0044] Pressure sensors 106, which are fixedly installed in two groups at the bottom of the movable plate 104, and fixing columns 107 are fixedly installed at the bottoms of the two groups of pressure sensors 106;

[0045] The test component 2 is arranged below the movable plate 104, and the test component 2 includes a pressing plate 201;

[0046] The pressing plate 201 is fixedly installed at the bottom ends of two groups of fixed columns 107. Symmetric sliding grooves 202 are formed inside the pressing plate 201, and a sliding plate 203 is slidably connected inside the sliding groove 202. Through grooves 2031 are formed through one side of the bottoms of the two sliding plates 203. At the same time, movable rods 204 are symmetrically and slidably connected to both sides inside the pressing plate 201. Fixed blocks 205 are fixedly installed above the outer sides of the two groups of movable rods 204, and the movable rods 204 are slidably connected to the through grooves 2031;

[0047] The support frames 206 are symmetrically installed on one side of the pressing plate 201 above the two groups of movable rods 204 in two groups. A roller 207 is rotatably connected between one side of each group of two support frames 206. A connecting rope 208 is rotatably connected to the outside of the roller 207, and the two ends of the connecting rope 208 are fixedly connected to the movable rod 204 and the sliding plate 203 respectively.

[0048] Example 1: As Figures 1-7 shown, the test component 2 is arranged below the movable plate 104. When performing a pressure test on the injection mold, the mold is placed on the top of the workbench 101, and the hydraulic push rod 103 is started to descend so that the bottom of the pressing plate 201 contacts the mold. If the mold is small, the movable rod 204 does not contact the mold. If the mold is large, the movable plate 104 drives the pressing plate 201 to descend so that the bottom end of the movable rod 204 contacts the mold. Then, the pressing plate 201 continues to descend, so that the movable rod 204 slides on the pressing plate 201 and slides in the through groove 2031. After the movable rod 204 moves, it can pull up the connecting rope 208, so that the connecting rope 208 drives the roller 207 to rotate, and then the sliding plate 203 can be pulled to move by the connecting rope 208. The sliding plate 203 extends out in the sliding groove 202. Therefore, when testing a large mold, the bottoms of the pressing plate 201 and the two sliding plates 203 are both in contact with the mold, which can expand the range of contact between the pressure and the mold, make the pressure applied on the mold more uniform, and avoid the influence of uneven pressure on the test accuracy. When testing molds of different sizes, there is no need to replace pressing plates 201 of different sizes, and there is no need to calibrate the values separately after replacement. Through the test component 2, when testing a large mold, the contact area with the mold can be expanded, the uneven pressure caused by the contact area can be avoided, the influence on the test accuracy of the injection mold can be avoided, and blow molds of different sizes can be used, improving the applicability. And when performing a pressure test on a large mold, excessive pressure can be avoided, and unnecessary damage and wear of the mold can be avoided.

[0049] An installation groove 209 is provided inside the pressing plate 201 between two sliding grooves 202. Fixing rods 210 are fixedly installed on the closer sides of the two sliding plates 203. Rack bars 211 are fixedly installed on the closer sides of the two fixing rods 210. Positioning blocks 212 are symmetrically installed inside the installation groove 209. The fixing rods 210 are slidably connected to the positioning blocks 212. A rotating shaft 213 is rotatably connected inside the installation groove 209. A rotating gear 214 is fixedly installed on the outer part of the rotating shaft 213. The two rack bars 211 are meshed with the rotating gear 214;

[0050] The top end of the rotating shaft 213 passes through the pressing plate 201 and a runner 215 is fixedly installed. Pulling ropes 223 are symmetrically installed on both sides of the runner 215. Tensile sensors 224 are provided on the two pulling ropes 223;

[0051] Two groups of positioning rods 216 are symmetrically installed on both sides of the pressing plate 201. A positioning plate 217 is slidably connected to the outer side of each group of two positioning rods 216. Expansion springs 218 are sleeved on the outer sides of the two positioning rods 216. One end of each expansion spring 218 is fixedly connected to the positioning plate 217, and the other end of each expansion spring 218 is fixedly connected to the positioning rod 216;

[0052] Connecting rods 219 are symmetrically and slidably connected inside the positioning plate 217. A moving plate 220 is fixedly installed at one end of the two connecting rods 219. Tensile springs 221 are sleeved on the outer sides of the two connecting rods 219. One end of each tensile spring 221 is fixedly connected to the positioning plate 217, and the other end of each tensile spring 221 is fixedly installed with an installation block 222. The installation block 222 is fixedly connected to the connecting rod 219;

[0053] The ends of the two pulling ropes 223 away from the runner 215 are respectively fixedly connected to the two moving plates 220.

[0054] Embodiment 2: As Figure 2 and Figures 5-8As shown, when testing a larger mold, the two sliding plates 203 move away from each other to drive the fixing rod 210 to move. After the fixing rod 210 moves, it can drive the rack 211 to move. After the rack 211 moves, it can drive the rotating shaft 213 to rotate by engaging with the rotating gear 214. The rotation of the rotating shaft 213 can drive the rotating wheel 215 to rotate. The elastic potential energy of the tension spring 221 is greater than that of the telescopic spring 218. After the rotating wheel 215 rotates, it can pull the moving plate 220 to move through the pull rope 223, and then pull the positioning plate 217 to move. The positioning plate 217 moves and fits with the front and rear sides of the mold, so that the mold can be slightly moved on the workbench 101 by the positioning plate 217, making the center of the mold and the center of the pressing plate 201 on the same straight line. If the pull rope 223 continues to move, it can pull the moving plate 220 to move, drive the connecting rod 219 to slide on the positioning plate 217 and stretch the tension spring 221. The tension of the pull rope 223 can be obtained through the tension sensor 224, and the pressure value can be obtained according to the value on the pressure sensor 106, so that the mold can be positioned and calibrated after positioning the mold, avoiding the mold from being skewed and affecting the accuracy of the mold pressure test.

[0055] The fixing component 3 is arranged inside the workbench 101;

[0056] The fixing component 3 includes a rectangular groove 301 opened inside the workbench 101. A bidirectional lead screw 302 is rotatably connected inside the rectangular groove 301. One end of the bidirectional lead screw 302 passes through the workbench 101 and is fixedly installed with a hand wheel 303. At the same time, movable seats 304 are symmetrically sleeved outside the bidirectional lead screw 302. Clamping plates 305 are symmetrically installed on the tops of the two movable seats 304. Moving grooves 306 are symmetrically opened above the rectangular groove 301 on the top of the workbench 101. The clamping plates 305 are slidably connected with the moving grooves 306;

[0057] Limit rods 307 are fixedly installed on one side of each group of clamping plates 305, and the limit rods 307 are slidably connected with the fixing frame 102.

[0058] Embodiment 3: As Figure 1 and Figure 9As shown, a fixed component 3 is provided inside the workbench 101. When testing the mold, positioning is performed on the front and rear sides of the mold through the positioning plate 217. At this time, rotating the handwheel 303 drives the bidirectional lead screw 302 to rotate. After the bidirectional lead screw 302 rotates, it can drive two movable seats 304 to approach simultaneously, so that the movable seats 304 drive the clamping plates 305 to move. The clamping plates 305 slide in the moving grooves 306 for limiting, and during the movement of the clamping plates 305, the limiting rods 307 slide on the fixed frame 102 to further limit the movement of the clamping plates 305, improving the stability of the movement of the clamping plates 305. Furthermore, the left and right sides of the mold can be positioned, facilitating the fixing of the mold during testing and ensuring that the mold is centered with the pressing plate 201, which is convenient for testing.

[0059] Working principle: First, according to Figures 1-9 As shown, when performing a pressure test on an injection mold, the mold is placed on the top of the workbench 101. The hydraulic push rod 103 is started to descend so that the bottom of the pressing plate 201 contacts the mold. If the mold is small, the movable rod 204 does not contact the mold. If the mold is large, the movable plate 104 drives the pressing plate 201 to descend so that the bottom end of the movable rod 204 contacts the mold. Then, the pressing plate 201 continues to descend, and thus the movable rod 204 slides on the pressing plate 201 and also slides in the through groove 2031. After the movable rod 204 moves, it can pull up the connecting rope 208, so that the connecting rope 208 drives the roller 207 to rotate. Furthermore, the sliding plate 203 can be pulled by the connecting rope 208 to move. The sliding plate 203 extends out of the sliding groove 202. Thus, when testing a large mold, the bottoms of the pressing plate 201 and the two sliding plates 203 are both in contact with the mold, which can expand the range of contact between the pressure and the mold, making the pressure applied on the mold more uniform and avoiding the influence of uneven pressure on the accuracy of the test.

[0060] The two sliding plates 203 move away from each other to drive the fixing rod 210 to move. After the fixing rod 210 moves, it can drive the rack 211 to move. After the rack 211 moves, it can drive the rotating shaft 213 to rotate by meshing with the rotating gear 214. The rotation of the rotating shaft 213 can drive the rotating wheel 215 to rotate. The elastic potential energy of the stretching spring 221 is greater than that of the telescopic spring 218. After the rotating wheel 215 rotates, it can pull the moving plate 220 to move through the pulling rope 223, and then pull the positioning plate 217 to move. The positioning plate 217 moves to fit with the front and rear sides of the mold, so that the mold can be slightly moved on the workbench 101 by pushing the positioning plate 217, so that the center of the mold can be on the same straight line as the center of the pressing plate 201. If the pulling rope 223 continues to move, it can pull the moving plate 220 to move, drive the connecting rod 219 to slide on the positioning plate 217 and stretch the stretching spring 221. The pulling force of the pulling rope 223 can be obtained through the pulling force sensor 224, and the pressure value can be obtained according to the value on the pressure sensor 106, so that the mold can be positioned and calibrated after positioning the mold, avoiding the mold from being skewed. When testing the mold, the front and rear sides of the mold are positioned through the positioning plate 217. At this time, the hand wheel 303 is rotated to drive the bidirectional lead screw 302 to rotate. After the bidirectional lead screw 302 rotates, it can drive the two movable seats 304 to approach at the same time, so that the movable seats 304 drive the clamping plates 305 to move. The clamping plates 305 slide in the moving grooves 306 for limiting, and the limiting rods 307 slide on the fixing frame 102 when the clamping plates 305 move, further limiting the movement of the clamping plates 305 and improving the stability of the movement of the clamping plates 305, so that the left and right sides of the mold can be positioned, which is convenient for fixing the mold during testing and can ensure that the center of the mold is aligned with the center of the pressing plate 201, facilitating the testing.

[0061] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0062] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An injection mold pressure testing device, including a base (1), a workbench (101) is fixedly installed on the top of the base (1), a fixing frame (102) is fixedly installed on the top of the workbench (101), a hydraulic push rod (103) is fixedly installed on the top of the fixing frame (102), and the movable end of the hydraulic push rod (103) passes through the fixing frame (102) and is fixedly installed with a movable plate (104). On both sides of the top of the movable plate (104), guide rods (105) are symmetrically installed, and both of the two guide rods (105) are slidably connected to the fixing frame (102); It is characterized in that It further includes: Two groups of pressure sensors (106), fixedly installed at the bottom of the movable plate (104), and fixing columns (107) are fixedly installed at the bottoms of both groups of pressure sensors (106); A testing assembly (2), arranged below the movable plate (104), and the testing assembly (2) includes a pressing plate (201); A fixing assembly (3), arranged inside the workbench (101); The pressing plate (201) is fixedly installed at the bottom ends of the two groups of fixing columns (107). Sliding grooves (202) are symmetrically formed inside the pressing plate (201), a sliding plate (203) is slidably connected inside the sliding grooves (202), through grooves (2031) are formed through one side of the bottoms of both sliding plates (203), movable rods (204) are symmetrically slidably connected to both sides inside the pressing plate (201), fixing blocks (205) are fixedly installed above the outer sides of all four movable rods (204), and the movable rods (204) are slidably connected to the through grooves (2031); On one side of the four movable rods (204) at the top of the pressing plate (201), a group of support frames (206) are installed. Between each group of two support frames (206), a roller (207) is rotatably connected. A connecting rope (208) is rotatably connected to the outside of the roller (207), and the two ends of the connecting rope (208) are respectively fixedly connected to the movable rod (204) and the sliding plate (203); An installation groove (209) is formed between the two sliding grooves (202) inside the pressing plate (201). Fixing rods (210) are fixedly installed on the closer sides of the two sliding plates (203), racks (211) are fixedly installed on the closer sides of the two fixing rods (210), positioning blocks (212) are symmetrically installed inside the installation groove (209), the fixing rods (210) are slidably connected to the positioning blocks (212), a rotating shaft (213) is rotatably connected inside the installation groove (209), a rotating gear (214) is fixedly installed on the outside of the rotating shaft (213), and the two racks (211) are meshed with the rotating gear (214); The top end of the rotating shaft (213) passes through the pressing plate (201) and is fixedly installed with a rotating wheel (215), and pull ropes (223) are symmetrically installed on both sides of the rotating wheel (215), and tension sensors (224) are arranged on both of the two pull ropes (223); Two groups of positioning rods (216) are symmetrically installed on both sides of the pressing plate (201), and a positioning plate (217) is slidably connected to the outer side of each group of two positioning rods (216), and a telescopic spring (218) is sleeved on the outer side of each group of two positioning rods (216). At the same time, one end of the telescopic spring (218) is fixedly connected to the positioning plate (217), and the other end of the telescopic spring (218) is fixedly connected to the positioning rod (216); Connecting rods (219) are symmetrically and slidably connected inside the positioning plate (217), and a moving plate (220) is fixedly installed at one end of the two connecting rods (219), and a stretching spring (221) is sleeved on the outer side of each of the two connecting rods (219). At the same time, one end of the stretching spring (221) is fixedly connected to the positioning plate (217), and the other end of the stretching spring (221) is fixedly installed with a mounting block (222), and the mounting block (222) is fixedly connected to the connecting rod (219); The ends of the two pull ropes (223) far away from the rotating wheel (215) are respectively fixedly connected to the two moving plates (220).

2. The pressure testing device for an injection mold according to claim 1, wherein: The fixing component (3) includes a rectangular groove (301) opened inside the workbench (101), and a bidirectional lead screw (302) is rotatably connected inside the rectangular groove (301), and one end of the bidirectional lead screw (302) passes through the workbench (101) and is fixedly installed with a hand wheel (303). At the same time, movable seats (304) are symmetrically sleeved on the outer side of the bidirectional lead screw (302), and clamping plates (305) are symmetrically installed on the tops of the two movable seats (304). And moving grooves (306) are symmetrically opened above the rectangular groove (301) on the top of the workbench (101), and the clamping plates (305) are slidably connected to the moving grooves (306).

3. The pressure testing device for an injection mold according to claim 2, characterized in that: Limit rods (307) are fixedly installed on one side of each group of the clamping plates (305), and the limit rods (307) are slidably connected to the fixing frame (102).

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