A pressure testing device for injection molds

Abstract

This invention discloses an injection mold pressure testing device, belonging to the technical field of injection mold pressure testing. It includes a worktable with a sliding seat positioned directly above it. A mounting base is fixedly connected to the bottom of the sliding seat. The device also includes four universal adjustment components, symmetrically arranged in pairs inside the mounting base. Each universal adjustment component includes a ball joint support. A ball rod is hinged to the bottom side of the ball joint support, and a sliding box is fixedly connected to the bottom end of the ball rod. A third spring is positioned on the top side of the sliding box, and a bearing plate is fixedly connected to the bottom end of the third spring. The bottom side of the bearing plate extends to the outside of the sliding box and is fixedly connected to a sensor. In this invention, the ball joint support and the ball rod form a universal swing structure, which, combined with the flexible compensation of the second spring, can automatically adapt to small tilt angles and flatness errors on the mold parting surface. This ensures that the sensor is evenly fitted to the entire parting surface, improving the accuracy and uniformity of pressure acquisition on the mold parting surface.

Description

Technical Field

[0001] This invention belongs to the field of injection mold pressure testing technology, and particularly relates to an injection mold pressure testing device. Background Technology

[0002] With the rapid development of new energy vehicles, aerospace, 5G communications, and medical fields, high-performance engineering plastics and special new materials such as PEEK, LCP, PPSU, and high glass fiber reinforced composites are widely used. These new materials generally have the characteristics of high melting temperature, high melt pressure, high shrinkage rate, and strong wear resistance, which puts forward more stringent requirements on the clamping force and parting surface contact state of injection molds. In order to suppress flash and overflow of high-temperature melt, and at the same time control the warping deformation of plastic parts caused by high shrinkage rate, injection molds for these new materials require higher and more uniform clamping force. Therefore, in the mold development, debugging, and acceptance stages, it is necessary to use a special pressure testing device to simulate the mold closing condition and test and evaluate the parting surface pressure.

[0003] For example, Chinese patent document (CN119510131B) discloses an injection mold pressure testing device, including a base, a worktable fixedly installed on the top of the base, a fixed frame fixedly installed on the top of the worktable, and a hydraulic push rod fixedly installed on the top of the fixed frame, with the movable end of the hydraulic push rod passing through the fixed frame and fixed; a movable plate is installed, and guide rods are symmetrically installed on both sides of the top of the movable plate, and both guide rods are slidably connected to the fixed frame; it also includes two sets of pressure sensors, fixedly installed on the bottom of the movable plate.

[0004] However, in the above solution, since the pressure sensor is rigidly fixed at the bottom of the movable plate and lacks adaptive adjustment and flexible buffer structure, the following disadvantages exist: when there are slight tilt angle or flatness errors caused by machining errors or assembly deviations on the mold parting surface, the rigidly installed pressure sensor cannot adaptively adjust with the parting surface posture. It can only maintain a fixed planar posture in contact with the mold, which is prone to local suspension, edge virtual contact or single-point hard-top phenomenon. It cannot achieve uniform contact between the sensor and the parting surface across the entire plane, resulting in distortion of the pressure acquisition data of the parting surface. Therefore, improvements are needed. Summary of the Invention

[0005] The purpose of this invention is to address the problem that when there are minor tilting or flatness errors caused by machining errors or assembly deviations on the mold parting surface, rigidly mounted pressure sensors cannot adaptively adjust to the parting surface posture. They can only maintain a fixed planar posture in contact with the mold, which easily leads to local suspension, edge false contact, or single-point hard-top phenomena. This makes it impossible to achieve uniform contact between the sensor and the parting surface across the entire plane, resulting in distortion of the pressure acquisition data on the parting surface. Therefore, this invention proposes an injection mold pressure testing device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A pressure testing device for injection molds includes a worktable, a sliding seat disposed directly above the worktable, and a mounting base fixedly connected to the bottom of the sliding seat; and further includes: Four universal adjustment components are symmetrically arranged in pairs inside the mounting base. Each universal adjustment component includes a ball joint support, with a ball rod hinged to the bottom inside the ball joint support. A sliding box is fixedly connected to the bottom end of the ball rod. A third spring is provided on the top inside the sliding box. A bearing plate is fixedly connected to the bottom end of the third spring. A sensor is fixedly connected to the bottom inside the bearing plate, which extends to the outside of the sliding box. Limiting baffles are provided on both sides above the bearing plate.

[0007] As a further description of the above technical solution: Also includes; The mounting base has a cavity at its center, and four sliding cavities are arranged symmetrically in pairs inside the mounting base. The ball joint support and the sliding box are slidably connected to the interior of the sliding cavities.

[0008] As a further description of the above technical solution: The universal adjustment assembly also includes: A second spring is fitted around the outer periphery of the cue stick, and the two ends of the second spring are fixedly connected to the bottom surface of the ball joint support and the top surface of the sliding box, respectively.

[0009] As a further description of the above technical solution: The universal adjustment assembly also includes: The cross-sectional shape of the support plate is set to a T-shape, and the support plate is slidably connected inside the sliding box. The sliding box has a first through hole on both sides, and the two first through holes are symmetrically arranged with respect to the central longitudinal section of the sliding box.

[0010] As a further description of the above technical solution: An adjustment assembly is provided inside the cavity, the adjustment assembly including: The drive motor is fixedly connected to the inner top surface of the mounting base at its top end. One end of the output shaft of the drive motor is fixedly connected to a rotating shaft. A first bevel gear is fixedly connected to the bottom side of the rotating shaft. Second bevel gears are meshed around the bottom of the first bevel gear. A lead screw is fixedly connected inside the second bevel gear. The lead screw is rotatably connected inside the mounting base.

[0011] As a further description of the above technical solution: The adjustment component further includes: The end of the lead screw away from the second bevel gear extends into the sliding cavity and is connected to a lead screw sleeve. The bottom surface of the lead screw sleeve is fixedly connected to the top surface of the ball joint support.

[0012] As a further description of the above technical solution: The sliding cavity is equipped with a parallel testing component, which includes: A connecting box is slidably connected inside a sliding cavity, and two second through holes are symmetrically arranged on both sides of the connecting box. The bottom surface of the connecting box is fixedly connected to the top surface of the lead screw sleeve. A first spring is symmetrically fixedly connected to the bottom side of the connecting box. A sliding plate is fixedly connected to the top of the first spring. The sliding plate is slidably connected inside the connecting box. A sliding rod is fixedly connected to the center of the top surface of the sliding plate. The top of the sliding rod extends to the outside of the connecting box and is fixedly connected to a roller. A first cone block is arranged above the roller. The top surface of the first cone block is fixedly connected to the top surface of the mounting base.

[0013] As a further description of the above technical solution: The parallel testing component also includes: Two U-shaped frames are symmetrically arranged on both sides of the outer side of the sliding plate. The bottom of the U-shaped frame is fixedly connected to the outer wall of the limiting baffle. The U-shaped frame is slidably connected inside the first through hole and the second through hole.

[0014] As a further description of the above technical solution: The parallel testing component also includes: The main liquid bladder is located at the center inside the connecting box, and its two sides are fixedly connected to the bottom surface of the sliding plate and the inner wall of the connecting box, respectively. One side of the main liquid bladder is connected to an infusion tube, and the other end of the infusion tube extends to the outside of the connecting box and is connected to a secondary liquid bladder. The top surface of the secondary liquid bladder is fixedly connected to the top surface of the sliding box, and the bottom of the secondary liquid bladder is fixedly connected to a limiting slide plate. The limiting slide plate is slidably connected inside the sliding box, and the bottom of the limiting slide plate is fixedly connected to the top surface of the third spring.

[0015] As a further description of the above technical solution: Also includes: Two circular through holes are symmetrically opened on both sides of the sliding seat. A sliding sleeve is installed inside the circular through hole. A support column is slidably connected inside the sliding sleeve. The bottom end of the support column is fixedly connected to the top surface of the workbench. The top of the four support columns is fixedly connected to the same top seat. A hydraulic cylinder is fixedly connected to the center of the top surface of the top seat. One end of the output shaft of the hydraulic cylinder extends to the bottom of the top seat and is fixedly connected to the top surface of the sliding seat.

[0016] Compared with existing technologies, the injection mold pressure testing device that adopts the above technical solution has the following beneficial effects: 1. In this invention, a universal swing structure is formed by the ball joint support and the ball rod. With the flexible compensation of the second spring, it can adapt to the slight tilt angle, height difference and flatness error of the parting surface of the new material injection mold caused by processing error, assembly deviation or long-term wear. This allows the sensor to be uniformly and planarly attached to the parting surface of the new material injection mold, eliminating local suspension, false contact and single-point hard top phenomena. It also avoids pressure distribution distortion caused by uneven attachment, and improves the authenticity, uniformity, stability and reliability of the pressure acquisition of the parting surface of the new material injection mold.

[0017] 2. In this invention, a four-axis synchronous transmission structure is formed by a drive motor, a bevel gear set, a lead screw, and a lead screw sleeve. After the power is output by the drive motor, the power is evenly distributed through the meshing transmission of the first bevel gear and four second bevel gears. Then, each lead screw accurately converts the rotational motion into linear displacement, driving the four sets of lead screw sleeves to move synchronously and smoothly. This drives the four universal adjustment components to make synchronous horizontal displacement in the sliding cavity, realizing continuous adjustment of the spacing between the four corner sensors. It can flexibly adapt to new material injection molds of different length and width specifications, from small molds, medium molds to large molds, thereby improving the device's multi-specification adaptability, mold change and debugging efficiency, and working condition adaptability, so that the device can adapt to the pressure testing requirements of new material injection molds of different specifications.

[0018] 3. In this invention, a hydraulic linkage structure consisting of a first cone block, rollers, main liquid bladder, and auxiliary liquid bladder, combined with the rigid linkage of the U-shaped frame, forms a linkage system in which mechanical transmission and hydraulic transmission work in tandem. While the adjusting component drives the four universal adjusting components to adjust the horizontal distance, the synchronous linkage adjustment of the downward movement of the limit baffle and the increase of the initial compression of the third spring is achieved. This can automatically adapt to different mold tilt angles and different clamping force conditions in the pressure test of new material injection molds, enabling the medium pressure stage to quickly enter rigid force transmission, shortening the transition range, improving the continuous stability of test data, and thus improving the reliability, stability, and adaptability of the device under different mold specifications and different clamping force conditions. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the mounting base from another perspective in this invention; Figure 3 This is a schematic diagram of the internal structure of the mounting base in this invention; Figure 4 This is a schematic diagram of the structure of the adjustment component, parallel testing component, and universal adjustment component in this invention; Figure 5 For the present invention Figure 4 A magnified view of the structure at point A in the middle; Figure 6This is a partial structural diagram of the adjustment component, parallel testing component, and universal adjustment component in this invention; Figure 7 This is a schematic diagram of the internal structure of the connecting box and the sliding box in this invention; Figure 8 This is a schematic diagram of the universal adjustment component from another perspective in this invention; Figure 9 This is a partial structural diagram of the parallel testing component in this invention.

[0020] Legend: 1. Workbench; 2. Sliding seat; 3. Mounting seat; 4. Hydraulic cylinder; 5. Adjustment assembly; 501. Drive motor; 502. Rotating shaft; 503. First bevel gear; 504. Second bevel gear; 505. Lead screw; 506. Lead screw sleeve; 6. Parallel testing assembly; 601. Connecting box; 602. Sliding rod; 603. Roller; 604. First cone block; 605. Sliding plate; 606. First spring 607. U-shaped frame; 608. Main fluid bladder; 609. Infusion tube; 610. Secondary fluid bladder; 611. Limiting slide plate; 7. Universal adjustment assembly; 701. Ball joint support; 702. Ball rod; 703. Second spring; 704. Sliding box; 705. Third spring; 706. Bearing plate; 707. Limiting baffle; 708. Sensor; 8. First through hole; 9. Second through hole; 10. Support column; 11. Top seat. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-9 The present invention provides a technical solution: an injection mold pressure testing device, including a worktable 1, a sliding seat 2 disposed directly above the worktable 1, and a mounting base 3 fixedly connected to the bottom of the sliding seat 2, and further including: Four universal adjustment components 7 are symmetrically arranged in pairs inside the mounting base 3. Each universal adjustment component 7 includes a ball joint support 701. A ball rod 702 is hinged to the bottom side inside the ball joint support 701. A sliding box 704 is fixedly connected to the bottom end of the ball rod 702. A third spring 705 is provided on the top side inside the sliding box 704. A bearing plate 706 is fixedly connected to the bottom end of the third spring 705. The bottom side inside the bearing plate 706 extends to the outside of the sliding box 704 and is fixedly connected to a sensor 708. Limiting baffles 707 are provided on both sides above the bearing plate 706. An elastic element is provided at the bottom of the bearing plate 706. An elastic layer is provided on the side of the limiting baffle 707 opposite to the bearing plate 706. Also includes; The mounting base 3 has a cavity at its center, and sliding cavities are provided around the outside of the cavity. The four sliding cavities are symmetrically arranged in pairs inside the mounting base 3. The ball joint support 701 and the sliding box 704 are slidably connected to the inside of the sliding cavities. Please see Figures 6-9 The universal adjustment assembly 7 also includes: A second spring 703 is sleeved on the outer periphery of the cue stick 702, and the two ends of the second spring 703 are fixedly connected to the bottom surface of the ball joint support 701 and the top surface of the sliding box 704, respectively. The cross-sectional shape of the support plate 706 is set as a T-shaped structure, and the support plate 706 is slidably connected to the inside of the sliding box 704. The two sides of the inside of the sliding box 704 are provided with first through holes 8. The two first through holes 8 are symmetrically arranged with respect to the central longitudinal section of the sliding box 704. A first shrinkage protective layer is provided on the bottom side of the outside of the sliding box 704. The other side of the first shrinkage protective layer is fixedly connected to the inner wall of the mounting base 3. The first shrinkage protective layer is set inside the sliding cavity. Please see Figure 1 It also includes: Two circular through holes are symmetrically opened on both sides of the sliding seat 2. A sliding sleeve is installed inside the circular through hole. A support column 10 is slidably connected inside the sliding sleeve. The bottom end of the support column 10 is fixedly connected to the top surface of the worktable 1. The top ends of the four support columns 10 are fixedly connected to the same top seat 11. A hydraulic cylinder 4 is fixedly connected to the center of the top surface of the top seat 11. One end of the output shaft of the hydraulic cylinder 4 extends to the bottom of the top seat 11 and is fixedly connected to the top surface of the sliding seat 2.

[0023] The specific usage method and working principle are as follows: Place the new material injection mold to be tested stably on the top surface of the workbench 1, adjust the position of the new material injection mold so that the parting surface of the new material injection mold faces directly upward and accurately corresponds to the position of the upper sensor 708, and complete the initial positioning of the new material injection mold. Then, install the new material injection mold on the top surface of the workbench 1 through the external fixing fixture. Hydraulic cylinder 4 is activated, and it slides smoothly downward along support column 10 via sliding seat 2. Sliding seat 2 drives mounting seat 3 to move downward at a uniform speed. At this time, sensor 708 first contacts the mold parting surface of the fixed mold. When there is a slight tilt angle or flatness error on the parting surface, the bottom surface of bearing plate 706 and sensor 708 makes partial contact with the top surface of the fixed mold. Under the action of contact reaction force, bearing plate 706 and sensor 708 drive ball rod 702 to generate a slight omnidirectional oscillation inside ball joint support 701. The second spring 703 is subjected to elastic compression force, through... The flexible rebound compensation of the second spring 703 enables the bottom surface of the sensor 708 to adaptively conform to the slight tilt angle of the parting surface, eliminating local suspension and false contact phenomena, so as to complete the low-pressure soft contact leveling. During this process, the sensor 708 will be squeezed by the support plate 706 against the third spring 705. The flexible buffer provided by the third spring 705 will prevent the sensor 708 from rigidly colliding with the mold, protecting the sensor 708 from impact damage, so as to ensure the initial uniformity of the sensor 708 and meet the uniformity test requirements of the pressure distribution of the parting surface of the new material mold. As the hydraulic cylinder 4 drives the mounting base 3 to continue moving downwards via the sliding seat 2, the device enters the medium-pressure stage. At this time, the sensor 708 will compress the third spring 705 through the bearing plate 706 until the top of the bearing plate 706 contacts the lower surface of the limiting baffle 707. The elastic layer on the limiting baffle 707 can absorb a small amount of impact at the moment of rigid contact, avoiding the impact noise or damage to parts caused by the hard metal collision between the bearing plate 706 and the limiting baffle 707. Under the combined action of the limiting baffle 707 and the reverse support of the mold parting surface, axial rigid limiting is achieved, so that the third spring 705 stops compressing. The clamping load in the medium-pressure stage is no longer borne by the third spring 705, but is formed by the bearing plate 706, the limiting baffle 707, the sliding box 704, the ball rod 702 and the ball joint support 701 to form a rigid force transmission path, which improves the pressure transmission stability of the device and provides a stable load basis for the parting surface pressure test under the medium-pressure working condition of the new material injection mold. As the hydraulic cylinder 4 drives the mounting base 3 to continue moving downwards via the sliding seat 2, the device enters the high-pressure stage. At this time, the parting surface of the new material injection mold is completely closed, the clamping force reaches the rated working pressure, the rigid force transmission path fully bears the high-pressure load, and the sensor 708 is in a stable pressure state, which can accurately collect the real clamping pressure data of the parting surface of the new material injection mold, and realize high-precision pressure testing of the new material injection mold under high-pressure conditions. Throughout the high-pressure stage, the third spring 705 remains in a limited compression state and no longer participates in elastic deformation, effectively preventing the sensor 708 from being overloaded and damaged, thereby improving the authenticity and reliability of the test data.

[0024] Please see Figures 3-6 An adjustment component 5 is provided inside the cavity. The adjustment component 5 includes: The top of the drive motor 501 is fixedly connected to the inner top surface of the mounting base 3. One end of the output shaft of the drive motor 501 is fixedly connected to the rotating shaft 502. The bottom side of the rotating shaft 502 is fixedly connected to the first bevel gear 503. The bottom four sides of the first bevel gear 503 are meshed with the second bevel gear 504. The second bevel gear 504 is fixedly connected to the inside of the second bevel gear 504. The lead screw 505 is rotatably connected inside the mounting base 3. The end of the lead screw 505 away from the second bevel gear 504 extends into the sliding cavity and is connected to the lead screw sleeve 506. The cross-section of the lead screw sleeve 506 is rectangular. The bottom surface of the lead screw sleeve 506 is fixedly connected to the top surface of the ball joint support 701. The lead screw sleeve 506 is slidably connected inside the sliding cavity.

[0025] The specific usage method and working principle are as follows: Start the drive motor 501. The drive motor 501 drives the rotating shaft 502 and the first bevel gear 503 to rotate via the output shaft. Utilizing the linkage effect between the first bevel gear 503 and the four second bevel gears 504, power is transmitted to the second bevel gears 504, causing the second bevel gears 504 to drive the lead screw 505 to rotate. Then, utilizing the linkage effect between the lead screw 505 and the lead screw sleeve 506, power is transmitted to the lead screw sleeve 506, causing the lead screw sleeve 506 to drive the connecting box 601, the ball joint support 701, the ball rod 702, and the sliding box. 704 and the support plate 706 move inside the sliding cavity, causing the four sensors 708 to move away from the center of the mounting base 3. By adjusting the spacing between the four sensors 708, the device can adapt to new material injection molds of different lengths and widths, so that it can meet the pressure distribution test requirements of the parting surface of new material injection molds of different sizes and specifications. This ensures that the device can accurately connect to the parting surface of various new material injection molds, guarantee the smooth conduct of pressure tests, accurately collect pressure data of the parting surface of new material injection molds of different sizes, and meet the core requirements of new material injection mold performance testing.

[0026] Please see Figures 6-9 The sliding cavity is equipped with a parallel testing component 6, which includes: The connecting box 601 is slidably connected inside the sliding cavity, and the connecting box 601 has symmetrical second through holes 9 on both sides inside. The bottom surface of the connecting box 601 is fixedly connected to the top surface of the lead screw sleeve 506. The bottom side of the connecting box 601 is symmetrically fixedly connected to the first spring 606. The top of the first spring 606 is fixedly connected to the sliding plate 605. The sliding plate 605 is slidably connected inside the connecting box 601. The center of the top surface of the sliding plate 605 is fixedly connected to the sliding rod 602. The top of the sliding rod 602 extends to the outside of the connecting box 601 and is fixedly connected to the roller 603. The sliding rod 602 is slidably connected inside the connecting box 601. The roller 603 is provided above the first cone block 604. The top surface of the first cone block 604 is fixedly connected to the inner top surface of the mounting base 3. The first cone block 604 is obliquely downward along the center of the mounting base 3. Two U-shaped frames 607 are symmetrically arranged on both sides of the outer side of the sliding plate 605. The bottom of the U-shaped frame 607 is fixedly connected to the outer wall of the limiting baffle 707. The U-shaped frame 607 is slidably connected inside the first through hole 8 and the second through hole 9. A second shrinkage protective layer is fixedly connected to both sides of the top of the U-shaped frame 607. The other side of the second shrinkage protective layer is fixedly connected to the inner wall of the connecting box 601. The second shrinkage protective layer is located inside the second through hole 9. A third shrinkage protective layer is fixedly connected to both sides of the bottom of the U-shaped frame 607. The other side of the third shrinkage protective layer is fixedly connected to the inner wall of the sliding box 704. The third shrinkage protective layer is located inside the first through hole. The main liquid bladder 608 is located at the center inside the connecting box 601, and its two sides are fixedly connected to the bottom surface of the sliding plate 605 and the inner wall of the connecting box 601, respectively. One side of the main liquid bladder 608 is connected to an infusion tube 609, and the other end of the infusion tube 609 extends to the outside of the connecting box 601 and is connected to a secondary liquid bladder 610. The top surface of the secondary liquid bladder 610 is fixedly connected to the inner top surface of the sliding box 704, and the bottom of the secondary liquid bladder 610 is fixedly connected to a limiting slide plate 611. The limiting slide plate 611 is slidably connected inside the sliding box 704, and the bottom of the limiting slide plate 611 is fixedly connected to the top surface of the third spring 705. The main liquid bladder 608 and the secondary liquid bladder 610 are both integrally molded from high-temperature resistant and oil-resistant fluororubber material, and are equipped with double-layer sealing gaskets and reinforced pressure edge design to ensure the stability and sealing of hydraulic transmission.

[0027] The specific usage method and working principle are as follows: During the horizontal adjustment process, the roller 603 will roll on the conical inclined surface of the first cone block 604. The first cone block 604 will drive the sliding rod 602 and the sliding plate 605 to move downward through the roller 603 and squeeze the first spring 606. During the downward movement of the sliding plate 605, the limiting baffle 707 will move downward through the U-shaped frame 607, realizing the synchronous adjustment of the height of the limiting baffle 707, thereby changing the limiting compression stroke of the third spring 705, adapting to the rigid limiting requirements under different working conditions of pressure testing of new material injection molds; Meanwhile, the sliding plate 605 compresses the main liquid bladder 608, transporting the liquid inside the main liquid bladder 608 to the auxiliary liquid bladder 610 through the infusion pipe 609. This causes the auxiliary liquid bladder 610 to expand and drive the limiting slide plate 611 to move downward. At this time, the limiting slide plate 611 compresses the third spring 705, increasing the initial compression of the third spring 705 during use. Through the coordinated action of electric and mechanical linkages, the initial compression of the third spring 705 and the limiting stroke of the limiting baffle 707 are synchronized and matched for adjustment. This allows the device to automatically match the testing requirements of different mold tilt angles and different clamping forces applicable to the pressure testing of new material injection molds. This allows the device to enter the rigid force transmission state earlier in the medium pressure stage, shortens the transition range from low pressure to medium pressure, ensures continuous, stable, and non-jumping test data, and improves the testing stability and reliability of the device under different new material injection mold working conditions.

[0028] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pressure testing device for injection molds, comprising a worktable (1), a sliding seat (2) disposed directly above the worktable (1), and a mounting base (3) fixedly connected to the bottom of the sliding seat (2), characterized in that, Also includes: Four universal adjustment components (7) are symmetrically arranged in pairs inside the mounting base (3). Each universal adjustment component (7) includes a ball joint support (701). A ball rod (702) is hinged to the bottom side of the ball joint support (701). A sliding box (704) is fixedly connected to the bottom end of the ball rod (702). A third spring (705) is provided on the top side of the sliding box (704). A bearing plate (706) is fixedly connected to the bottom end of the third spring (705). The bottom side of the bearing plate (706) extends to the outside of the sliding box (704) and is fixedly connected to a sensor (708). Limiting baffles (707) are provided on both sides above the bearing plate (706).

2. The injection mold pressure testing device according to claim 1, characterized in that, Also includes; The mounting base (3) has a cavity at its center and sliding cavities around its perimeter. The four sliding cavities are symmetrically arranged in pairs inside the mounting base (3). The ball joint support (701) and the sliding box (704) are slidably connected to the interior of the sliding cavities.

3. The injection mold pressure testing device according to claim 1, characterized in that, The universal adjustment assembly (7) also includes: The ball stick (702) is fitted with a second spring (703) on its outer periphery. The two ends of the second spring (703) are fixedly connected to the bottom surface of the ball joint support (701) and the top surface of the sliding box (704), respectively.

4. The injection mold pressure testing device according to claim 1, characterized in that, The universal adjustment assembly (7) also includes: The cross-sectional shape of the support plate (706) is set as a T-shaped structure, and the support plate (706) is slidably connected to the inside of the sliding box (704). The two sides of the inside of the sliding box (704) are provided with first through holes (8), and the two first through holes (8) are symmetrically arranged with respect to the central longitudinal section of the sliding box (704).

5. The injection mold pressure testing device according to claim 2, characterized in that, An adjustment component (5) is provided inside the cavity, and the adjustment component (5) includes: The top end of the drive motor (501) is fixedly connected to the inner top surface of the mounting base (3). One end of the output shaft of the drive motor (501) is fixedly connected to the rotating shaft (502). The bottom side of the rotating shaft (502) is fixedly connected to the first bevel gear (503). The bottom four sides of the first bevel gear (503) are meshed with the second bevel gear (504). The second bevel gear (504) is fixedly connected to the lead screw (505). The lead screw (505) is rotatably connected inside the mounting base (3).

6. The injection mold pressure testing device according to claim 5, characterized in that, The adjustment component (5) further includes: The end of the lead screw (505) away from the second bevel gear (504) extends into the sliding cavity and is connected to the lead screw sleeve (506). The bottom surface of the lead screw sleeve (506) is fixedly connected to the top surface of the ball joint support (701).

7. The injection mold pressure testing device according to claim 6, characterized in that, The sliding cavity is equipped with a parallel testing component (6), which includes: A connecting box (601) is slidably connected inside a sliding cavity, and a second through hole (9) is symmetrically provided on both sides inside the connecting box (601). The bottom surface of the connecting box (601) is fixedly connected to the top surface of the lead screw sleeve (506). A first spring (606) is symmetrically fixedly connected to the bottom side inside the connecting box (601). A sliding plate (605) is fixedly connected to the top of the first spring (606). The sliding plate (605) is slidably connected inside the connecting box (601). A sliding rod (602) is fixedly connected to the center of the top surface of the sliding plate (605). The top of the sliding rod (602) extends to the outside of the connecting box (601) and is fixedly connected to a roller (603). A first cone block (604) is provided above the roller (603). The top surface of the first cone block (604) is fixedly connected to the inner top surface of the mounting base (3).

8. The injection mold pressure testing device according to claim 7, characterized in that, The parallel testing component (6) also includes: Two U-shaped frames (607) are symmetrically arranged on both sides of the outer side of the sliding plate (605). The bottom of the U-shaped frame (607) is fixedly connected to the outer wall of the limiting baffle (707). The U-shaped frame (607) is slidably connected inside the first through hole (8) and the second through hole (9).

9. The injection mold pressure testing device according to claim 8, characterized in that, The parallel testing component (6) also includes: The main liquid bladder (608) is located at the center inside the connecting box (601), and the two sides of the main liquid bladder (608) are fixedly connected to the bottom surface of the sliding plate (605) and the inner wall of the connecting box (601), respectively. One side of the main liquid bladder (608) is connected to an infusion tube (609), and the other end of the infusion tube (609) extends to the outside of the connecting box (601) and is connected to a secondary liquid bladder (610). The top surface of the secondary liquid bladder (610) is fixedly connected to the top surface inside the sliding box (704), and the bottom of the secondary liquid bladder (610) is fixedly connected to a limiting slide plate (611). The limiting slide plate (611) is slidably connected inside the sliding box (704), and the bottom of the limiting slide plate (611) is fixedly connected to the top surface of the third spring (705).

10. The injection mold pressure testing device according to claim 1, characterized in that, Also includes: The sliding seat (2) has two circular through holes symmetrically opened on both sides. A sliding sleeve is installed inside the circular through hole. A support column (10) is slidably connected inside the sliding sleeve. The bottom end of the support column (10) is fixedly connected to the top surface of the workbench (1). The top ends of the four support columns (10) are fixedly connected to the same top seat (11). A hydraulic cylinder (4) is fixedly connected at the center of the top surface of the top seat (11). One end of the output shaft of the hydraulic cylinder (4) extends to the bottom of the top seat (11) and is fixedly connected to the top surface of the sliding seat (2).

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