A device for testing the bending strength of mold steel

Abstract

This invention relates to the field of testing technology, and in particular to a device for testing the bending strength of mold steel. The device includes a frame, a pressure head, and support components. The pressure head is located on the upper part of the frame, with its axis vertical and movable along this axis. Two support components are symmetrically arranged on the lower part of the frame about the axis of the pressure head. Each support component includes a support frame and a support roller. The support frame is located on the lower part of the frame, and the support roller is mounted on the support frame. A working arc surface is formed on one circumferential side of the support roller. This invention incorporates a support roller with a working arc surface. By creating this working arc surface on the support roller, the difference between the arc length between the tangent point of the lower surface of the sample and the support roller and the distance between the tangent point of the lower surface of the sample and the support roller before bending can be reduced. This keeps the error within a reasonable range and prevents the test results from becoming invalid due to excessive error.

Description

Technical Field

[0001] This invention relates to the field of testing technology, and in particular to a device for testing the bending strength of mold steel. Background Technology

[0002] Bending strength testing of mold steel is a crucial step in evaluating its mechanical properties, which is essential for ensuring the reliability and durability of the mold in practical use. Current technology often uses a universal testing machine to apply static loads to the specimen (mold steel) and measure deformation. Taking the three-point bending test method as an example, before testing, the specimen needs to be placed on a support fixture with its center directly below the hydraulic punch. Next, the hydraulic press is started, applying a static load of a preset value at a preset loading rate. After maintaining this load for a certain period, the hydraulic punch is moved upwards, and finally, the specimen is removed from the fixture. The bending strength of the specimen is then calculated based on the test results.

[0003]

[0004] in: (MPa);

[0005] (F): Maximum load (N);

[0006] (L): Horizontal distance between two support points (mm);

[0007] (b): Specimen width (mm);

[0008] (d): Sample thickness (mm);

[0009] In this calculation formula, L is actually the span of the specimen surface. When the bending amount of the steel is less than the preset value, the arc length of the lower surface of the specimen between the two support points is approximately equal to the horizontal distance between the two support points. At this time, the calculation error is within a reasonable range, and the formula is valid. However, when the bending amount of the steel is greater than the preset value, the arc length of the lower surface of the specimen between the two support points is significantly greater than the horizontal distance between the two support points. If the horizontal distance between the two support points is still used as the arc length of the lower surface of the specimen between the two support points, the error of the above formula for calculating the bending strength of the specimen will deviate from the reasonable range, causing the formula to be invalid. Summary of the Invention

[0010] Therefore, it is necessary to provide a mold steel bending strength testing device to address the problems existing in the current steel bending strength testing, so as to solve the problem that the error in the bending strength testing of the sample is too large when the bending amount of the sample is greater than the preset value.

[0011] The above objectives are achieved through the following technical solutions:

[0012] A device for testing the bending strength of mold steel is used to test the bending strength of mold steel samples, comprising:

[0013] frame;

[0014] The pressure head is located on the upper part of the frame, with its axis vertical and capable of moving along its axis.

[0015] There are two support components, which are symmetrically arranged at the bottom of the frame with the axis of the pressure head as the axis of symmetry.

[0016] The support assembly includes a support frame and a support roller. The support frame is located at the lower part of the machine frame, and the support roller is mounted on the support frame. A working arc surface is formed on one circumferential side of the support roller, and the radius of curvature of the working arc surface is greater than the radius of the support roller.

[0017] In the initial state, the sample is in contact with the non-working arc surface of the support roller;

[0018] In the working state, the sample is in line contact with the working arc surface of the support roller.

[0019] Preferably, the support assembly further includes two sets of support tubes, which are respectively disposed at both ends of the support roller. Each set includes multiple support tubes, which are nested from the inside to the outside. Two adjacent support tubes can move relative to each other along their axis.

[0020] A working arc surface is also provided on one side of the outer periphery of the support tube, and the radius of curvature of the working arc surface is greater than the outer diameter of the corresponding support tube.

[0021] In the initial state, the two sets of support tubes are elastically abutting each other.

[0022] Preferably, the mold steel bending strength testing device further includes a control component, which is used to control two support tubes of the same diameter in the two sets of support tubes to move away from each other or move closer to each other.

[0023] Preferably, the control component includes a stop ring, a sliding frame, and guide posts. There are multiple stop rings, each corresponding to a different support tube, and the stop rings are located at the end of the support tube near the support frame. There are two sliding frames, each fixedly connected to the stop ring with the largest diameter in one of the two sets of support tubes. There are two guide posts, each located at the lower end of one of the two sliding frames, and the two guide posts can move closer to or further away from each other along the axis of the support roller.

[0024] Preferably, the mold steel bending strength testing device further includes a drive assembly, which is used to control the two guide pillars to move closer to or further apart from each other.

[0025] Preferably, the drive assembly includes a guide plate, threaded blocks, and a bidirectional lead screw. The guide plate is located at the lower part of the frame, and a guide groove is formed on the upper surface of the guide plate. The guide post is slidably connected in the guide groove. The lead screw is rotatably located at the lower part of the frame. There are two threaded blocks, which are respectively threaded to the two ends of the bidirectional lead screw, and the two threaded blocks are respectively connected to the support frame of the corresponding support assembly.

[0026] Preferably, the drive assembly further includes a handwheel, which is fixedly connected to one end of the bidirectional lead screw.

[0027] Preferably, a servo motor is provided on the frame, and the output end of the servo motor is fixedly connected to one end of a bidirectional lead screw.

[0028] Preferably, the guide groove includes a first horizontal section, a second horizontal section, and a third horizontal section. The first horizontal section, the second horizontal section, and the third horizontal section are arranged at intervals from the outside to the inside on the guide plate in a direction perpendicular to the axis of the bidirectional lead screw. The first horizontal section and the second horizontal section, as well as the second horizontal section and the third horizontal section, are smoothly connected by guide grooves.

[0029] Preferably, the mold steel bending strength testing device further includes a hydraulic press, the axis of which is vertical, the fixed end of which is located on the upper part of the frame, and the output end of which is fixedly connected to the pressure head.

[0030] The beneficial effects of this invention are:

[0031] This invention incorporates a support roller with a working arc surface. After the working arc surface is formed, the difference between the arc length between the tangent point of the lower surface of the sample and the support roller and the distance between the tangent point of the lower surface of the sample and the support roller before bending is smaller than the difference between the arc length between the tangent point of the lower surface of the sample and the support roller and the distance between the tangent point of the lower surface of the sample and the support roller before bending when the working arc surface is not formed. Therefore, by forming a working arc surface on the surface of the support roller, the difference between the arc length between the tangent point of the lower surface of the sample and the support roller and the distance between the tangent point of the lower surface of the sample and the support roller before bending can be reduced, so that the error is kept within a reasonable range as much as possible, preventing the test results from failing due to excessive error. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of the mold steel bending strength testing device of the present invention;

[0033] Figure 2 This is a half-sectional axonometric view of the support component in the mold steel bending strength testing device of the present invention;

[0034] Figure 3 for Figure 2 A magnified schematic diagram of the structure at point A in the middle;

[0035] Figure 4 This is a schematic diagram of the connection structure of the support frame in the mold steel bending strength testing device of the present invention;

[0036] Figure 5 This is a schematic diagram of the support roller structure in a mold steel bending strength testing device of the present invention;

[0037] Figure 6 This is a schematic diagram of the support tube in a mold steel bending strength testing device of the present invention;

[0038] Figure 7 This is a schematic diagram of the sliding frame in a mold steel bending strength testing device of the present invention;

[0039] Figure 8 This is a schematic diagram of the guide plate in a mold steel bending strength testing device of the present invention;

[0040] Figure 9 This is a schematic diagram of the first state of the support component in the mold steel bending strength testing device of the present invention;

[0041] Figure 10 This is a schematic diagram of the second state of the support component in the mold steel bending strength testing device of the present invention;

[0042] Figure 11 This is a schematic diagram of the third state of the support component in the mold steel bending strength testing device of the present invention;

[0043] Figure 12 This is a schematic diagram of the principle of a mold steel bending strength testing device according to the present invention.

[0044] in:

[0045] 100. Rack;

[0046] 200. Pressure head;

[0047] 300. Support assembly; 310. Support frame; 320. Support roller; 321. Working arc surface; 330. Support tube;

[0048] 400. Control component; 410. Stop ring; 420. Sliding bracket; 430. Guide post;

[0049] 500. Drive assembly; 510. Guide plate; 520. Threaded block; 530. Double-acting lead screw; 540. Guide groove; 541. First horizontal section; 542. Second horizontal section; 543. Third horizontal section; 544. Guide slant groove; 550. Handwheel;

[0050] 600, Sample. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0052] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0053] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0054] like Figures 1 to 12 As shown, a mold steel bending strength testing device is used to test the bending strength of a mold steel sample 600. The device includes a frame 100, a pressure head 200, and support assemblies 300. The pressure head 200 is located on the upper part of the frame 100, with its axis vertical and movable along this axis. Two support assemblies 300 are symmetrically arranged on the lower part of the frame 100 about the axis of the pressure head 200. The component 300 includes a support frame 310 and a support roller 320. The support frame 310 is located at the lower part of the frame 100, and the support roller 320 is mounted on the support frame 310. A working arc surface 321 is formed on one circumferential side of the support roller 320. The radius of curvature of the working arc surface 321 is greater than the radius of the support roller 320. In the initial state, the sample 600 is in line contact with the non-working arc surface of the support roller 320. In the working state, the sample 600 is in line contact with the working arc surface 321 of the support roller 320.

[0055] During testing, the operator places the sample 600 on the two support rollers 320 and adjusts its position so that the center of the sample 600 is directly below the pressure head 200. At this time, the surface span of the sample 600 is equal to the horizontal distance between the tangent points of the sample 600 and the support rollers 320. The positional relationship between the sample 600 and the support rollers 320 at this time is as follows: Figure 12 As shown in Figure a, the sample 600 is currently in line contact with the non-working arc surface 321 of the support roller 320. The surface span of the sample 600 is the length between d1 and d2. Next, the operator moves the pressure head 200 downward along its axis. When the pressure head 200 contacts the middle position of the sample 600, as the pressure head 200 continues to move downward, it applies a static load to the sample 600. The sample 600 gradually bends into an arch shape with the opening facing upward. At this time, the arc length between the lower surface of the sample 600 and the tangent point of the support roller 320 is greater than the distance between the lower surface of the sample 600 and the tangent point of the support roller 320 before bending. Assuming that the surface of the support roller 320 does not have a working arc surface 321, the positional relationship between the sample 600 and the support roller 320 at this time is as follows: Figure 12 As shown in Figure b, the surface span of the sample 600 is the arc length between d3 and d4. As the degree of bending of the sample 600 increases, the difference between the arc length between the tangent point of the lower surface of the sample 600 and the support roller 320 and the distance between the tangent point of the lower surface of the sample 600 and the support roller 320 before bending will increase. This will cause the surface span error to deviate from the reasonable range, making the formula invalid. After opening a working arc surface 321 on one circumferential side of the support roller 320, in the working state (i.e., after the sample 600 is bent), the sample 600 and the working arc surface 321 of the support roller 320 are in line contact (i.e., tangent). At this time, the positional relationship between the sample 600 and the support roller 320 is as follows: Figure 12 As shown in Figure c, since the radius of curvature of the working arc surface 321 is greater than the radius of the support roller 320, therefore It is closer to d1 than d3. Compared to d4, it is closer to d2. Thus, it can be found that the difference between the arc length between the tangent point of the lower surface of the sample 600 and the support roller 320 after the working arc surface 321 is opened and the distance between the tangent point of the lower surface of the sample 600 and the support roller 320 before bending is smaller than the difference between the arc length between the tangent point of the lower surface of the sample 600 and the support roller 320 before bending when the working arc surface 321 is not opened. Therefore, after opening the working arc surface 321 on the surface of the support roller 320, the difference between the arc length between the tangent point of the lower surface of the sample 600 and the support roller 320 and the distance between the tangent point of the lower surface of the sample 600 and the support roller 320 before bending can be reduced, so that the error is kept within a reasonable range as much as possible, and the test results are prevented from failing due to excessive error.

[0056] It should also be noted that the mold steel bending strength testing device includes a hydraulic press. The hydraulic press has a vertical axis, and its fixed end is located on the upper part of the frame 100. The output end of the hydraulic press is fixedly connected to the pressure head 200. When it is necessary for the pressure head 200 to move along its axis, the hydraulic press is started, which drives the pressure head 200 to move along its axis.

[0057] To evaluate the performance of mold steel under different loading conditions, multiple specimens 600 of different lengths (typically 80 mm, 100 mm, and 120 mm) are usually selected for bending strength testing of mold steel. Longer specimens 600 require longer spans, and shorter specimens 600 require shorter spans. For specimens 600 with different spans, when they are tangent to the working arc surface 321 on the support roller 320, the difference between the arc length between the lower surface of the specimen 600 and the point of tangency with the support roller 320 and the distance between the lower surface of the specimen 600 and the point of tangency with the support roller 320 before bending is different. For example, if the length is 80 mm... If the difference between the arc length between the lower surface of the sample 600 and the tangent point of the support roller 320 and the distance between the lower surface of the sample 600 and the support roller 320 before bending is minimized, then the difference between the arc length between the lower surface of the sample 600 and the tangent point of the support roller 320 for a length of 120 mm and the distance between the lower surface of the sample 600 and the support roller 320 before bending will increase, possibly deviating from a reasonable range. To solve this problem, it is necessary to provide multiple working arc surfaces 321 with different diameters so that samples 600 of different lengths have suitable working arc surfaces 321 to support them. To solve this problem, in this embodiment, such as Figure 1 and Figure 3As shown, the span between the two support components 300 is adjustable. Each support component 300 also includes two sets of support tubes 330, which are respectively located at both ends of the support roller 320. Each set includes multiple support tubes 330, which are nested from the inside out. Adjacent support tubes 330 can move relative to each other along their axis. A working arc surface 321 is also provided on one side of the outer circumference of the support tube 330. The radius of curvature of the working arc surface 321 is larger than the outer diameter of the corresponding support tube 330. In the initial state, the two sets of support tubes 330 elastically abut against each other. The mold steel bending strength detection device also includes a control component 400, which is used to control the two sets of support tubes. Two support tubes 330 of the same diameter in the tube 330 are either far apart or close together. The control component 400 includes a stop ring 410, a sliding frame 420, and guide posts 430. There are multiple stop rings 410, and each stop ring 410 corresponds to one of the multiple support tubes 330. The stop rings 410 are located at the end of the support tube 330 near the support frame 310. There are two sliding frames 420, and each sliding frame 420 is fixedly connected to the stop ring 410 with the largest diameter in the two sets of support tubes 330. There are two guide posts 430, and each guide post 430 is located at the lower end of the two sliding frames 420. The two guide posts 430 can move close together or far apart along the axis of the support roller 320.

[0058] like Figure 3 For example, there are two support tubes 330 sleeved on the outside of the support roller 320, so it can be used to test three samples 600 of different lengths. The working arc surface 321 on the large-diameter support tube 330 is adapted to the longest sample 600, the working arc surface 321 on the small-diameter support tube 330 is adapted to the second longest sample 600, and the working arc surface 321 on the support roller 320 is adapted to the shortest sample 600.

[0059] In the initial state of the device, such as Figure 9As shown, the spring connected to the stop ring 410 is at its maximum compression, at which point the support roller 320 is exposed. Therefore, it can be used to test the shortest sample 600. At this time, the working arc surface 321 on the surface of the support roller 320 is exposed. The operator can place the shortest sample 600 on the support roller 320 for testing. After the shortest sample 600 is tested, the second longest sample 600 is tested. At this time, the operator first increases the distance between the two support components 300 so that the distance between the two support components 300 meets the standard. Then, the distance between the support components 300 and the support roller 300 is increased. The two corresponding guide posts 430 approach each other, which in turn causes the corresponding sliding frame 420 to approach each other. At this time, the compression of the spring corresponding to the small-diameter support tube 330 decreases. Under the action of the spring force, the two small-diameter support tubes 330 gradually come into contact. At this time, the staff can place the second longest sample 600 on the small-diameter support tube 330 and perform bending strength testing on the second longest sample 600. After the second longest sample 600 is tested, the longest sample 600 is tested next. The process is the same as described above, and will not be repeated here.

[0060] In this embodiment, as Figure 1 and Figure 8 As shown, the mold steel bending strength testing device also includes a drive assembly 500. The drive assembly 500 is used to control the two guide pillars 430 to move closer or further apart. The drive assembly 500 includes a guide plate 510, a threaded block 520, and a bidirectional lead screw 530. The guide plate 510 is located at the lower part of the frame 100. A guide groove 540 is formed on the upper surface of the guide plate 510. The guide pillars 430 are slidably connected in the guide groove 540. The guide groove 540 includes a first horizontal section 541, a second horizontal section 542, and a third horizontal section 543. The first horizontal section 541, the second horizontal section 542, the second horizontal section 543, the third horizontal section 542, the third ... The first horizontal section 541 and the second horizontal section 542 are spaced apart from the outside to the inside along a direction perpendicular to the axis of the bidirectional lead screw 530. The first horizontal section 541 and the second horizontal section 542, as well as the second horizontal section 542 and the third horizontal section 543, are smoothly connected through the guide groove 544. The bidirectional lead screw 530 is rotatably mounted at the lower part of the frame 100. There are two threaded blocks 520, which are threaded to both ends of the bidirectional lead screw 530 respectively, and the two threaded blocks 520 are respectively connected to the support frame 310 of the corresponding support assembly 300.

[0061] Initially, the guide post 430 is located within the third horizontal section 543, at which point the support roller 320 is exposed. Therefore, this is suitable for testing the shortest sample 600. When testing a sample 600 with a diameter in the middle, the guide post 430 needs to be moved from the third horizontal section 543 to the second horizontal section 542. Specifically, the operator rotates the bidirectional lead screw 530, which drives the threaded blocks 520 at both ends to move closer together. The threaded blocks 520 drive the support frame 310 to move synchronously, and the support frame 310 drives the sliding frame 420 to move synchronously along the axis of the bidirectional lead screw 530. Simultaneously, because the guide post 430 is slidably connected to the third horizontal section 542... Within the horizontal section 543, as the sliding frame 420 moves synchronously along the axis of the bidirectional screw 530 following the support frame 310, the guide post 430 moves to the second horizontal section 542 via the guide groove 544. At this time, the smaller diameter support tube 330 is exposed, and the two smaller diameter support tubes 330 abut against each other. The operator can place the second longest sample 600 on the two support tubes 330. Similarly, when it is necessary to monitor the second longest sample 600, the operator rotates the bidirectional screw 530 so that the two larger diameter support tubes 330 abut against each other. At this time, the longest sample 600 can be placed on the two support tubes 330 for testing.

[0062] In this embodiment, the drive assembly 500 also includes a handwheel 550, which is fixedly connected to one end of the bidirectional lead screw 530.

[0063] In use, the operator can turn the handwheel 550 to drive the bidirectional lead screw 530 to rotate synchronously.

[0064] In this embodiment, a servo motor is provided on the frame 100, and the output end of the servo motor is fixedly connected to one end of the bidirectional lead screw 530.

[0065] In addition to the manual operation mode mentioned above, a servo motor can also be set to control the rotation of the bidirectional lead screw 530. In this case, the rotation of the bidirectional lead screw 530 can be precisely controlled by the rotation of the servo motor, thereby controlling the two guide posts 430 to move closer or further apart.

[0066] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A device for testing the bending strength of mold steel, used to test the bending strength of mold steel samples, characterized in that, include: frame; The pressure head is located on the upper part of the frame, with its axis vertical and capable of moving along its axis. There are two support components, which are symmetrically arranged at the bottom of the frame with the axis of the pressure head as the axis of symmetry. The support assembly includes a support frame and a support roller. The support frame is located at the lower part of the machine frame, and the support roller is mounted on the support frame. A working arc surface is formed on one circumferential side of the support roller, and the radius of curvature of the working arc surface is greater than the radius of the support roller. In the initial state, the sample is in contact with the non-working arc surface of the support roller; In the working state, the sample is in contact with the working arc surface of the support roller; the support assembly also includes two sets of support tubes, which are respectively located at both ends of the support roller. Each set includes multiple support tubes, which are nested from the inside to the outside. Two adjacent support tubes can move relative to each other along their axis. A working arc surface is also provided on one side of the outer periphery of the support tube, and the radius of curvature of the working arc surface is greater than the outer diameter of the corresponding support tube. In the initial state, the two sets of support tubes are elastically abutting each other.

2. The die steel bending strength testing device according to claim 1, characterized in that, The mold steel bending strength testing device also includes a control component, which is used to control two support tubes of the same diameter in the two sets of support tubes to move away from each other or move closer to each other.

3. The die steel bending strength testing device according to claim 2, characterized in that, The control assembly includes stop rings, sliding frames, and guide posts. There are multiple stop rings, each corresponding to a different support tube. The stop rings are located at the end of the support tube near the support frame. There are two sliding frames, each fixedly connected to the stop ring with the largest diameter in one of the two sets of support tubes. There are two guide posts, each located at the lower end of one of the two sliding frames. The two guide posts can move closer to or further away from each other along the axis of the support roller.

4. The die steel bending strength testing device according to claim 3, characterized in that, The mold steel bending strength testing device also includes a drive assembly, which is used to control the two guide pillars to move closer to or further apart from each other.

5. The die steel bending strength testing device according to claim 4, characterized in that, The drive assembly includes a guide plate, threaded blocks, and a bidirectional lead screw. The guide plate is located at the lower part of the frame, and a guide groove is formed on the upper surface of the guide plate. The guide post is slidably connected in the guide groove. The lead screw is rotatably located at the lower part of the frame. There are two threaded blocks, which are threadedly connected to the two ends of the bidirectional lead screw, and the two threaded blocks are respectively connected to the support frame of the corresponding support assembly.

6. The die steel bending strength testing device according to claim 5, characterized in that, The drive assembly also includes a handwheel, which is fixedly connected to one end of a bidirectional lead screw.

7. The die steel bending strength testing device according to claim 5, characterized in that, A servo motor is mounted on the frame, and the output end of the servo motor is fixedly connected to one end of a bidirectional lead screw.

8. The die steel bending strength testing device according to claim 5, characterized in that, The guide groove includes a first horizontal section, a second horizontal section, and a third horizontal section. The first horizontal section, the second horizontal section, and the third horizontal section are arranged at intervals from the outside to the inside on the guide plate in a direction perpendicular to the axis of the bidirectional lead screw. The first horizontal section and the second horizontal section, as well as the second horizontal section and the third horizontal section, are smoothly connected by guide grooves.

9. The die steel bending strength testing device according to claim 1, characterized in that, The mold steel bending strength testing device also includes a hydraulic press with a vertical axis. The fixed end of the hydraulic press is located on the upper part of the frame, and the output end of the hydraulic press is fixedly connected to the pressure head.

Images