Pipe die strength detection device and use method thereof

Abstract

The invention relates to the technical field of mold detection, in particular to a pipe mold strength detection device and a using method thereof.The pipe mold strength detection device comprises a base used for fixing a lower mold, guide columns are fixedly arranged at the four corners of the top of the base, a top cover is fixedly connected to the top ends of the guide columns, and a movable seat used for fixing the lower mold is arranged on the lower side of the top cover; and a spring plate is fixedly mounted at the bottom of the top cover. According to the pipe die strength detection device and the use method thereof, after the upper die deforms and breaks, the gravity center of the upper die changes, the upper die deflects along the suspension posture of the spring, at the moment, the upper die driven by the spring to move upwards does not jack probes at different positions at the same time but jacks the probes along the upwarp part, and the contact elastic pieces are not completely triggered; in this way, deformation is visually prompted through the gravity center change, caused by deformation of the upper die, of the movable base, an operator does not need to continuously observe the deformation condition of the die, and detection convenience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mold detection, and particularly to a device for detecting the strength of a pipe mold and a method for using the same. Background Art

[0002] A mold is various molds and tools used in industrial production to obtain the required products through methods such as injection molding, blow molding, extrusion, die casting, forging, smelting, stamping, etc. It mainly realizes the processing of the outer shape of an article by changing the physical state of the formed material. A mold is a precision tool with a complex shape and bears the expansion force of the blank. Most of them have many high requirements for their own structural strength, stiffness, surface hardness, surface roughness, processing accuracy, etc. For example, a pipe mold needs to ensure that the manufactured pipe has good processing accuracy to ensure the accurate installation of the pipe.

[0003] According to the processed and formed materials, molds can be divided into two major categories: metal product molds and non-metal product molds. Metal product molds can be divided into stamping dies, die-casting dies, forging dies, etc. Among them, a forging die is a mold used in the forging production process. Under the action of an external force applied by a forging press or a stamping press, etc., the raw material undergoes plastic deformation in the forging die, so as to obtain the required shape and size of the forging part. In the actual forging production process, the working environment of the forging die is harsh, and it needs to bear the repeated impact loads applied by pressure equipment such as forging presses, which is likely to cause brittle fracture of the forging die itself. The forging die needs to have reliable strength and toughness. Therefore, it is necessary to detect the strength of the mold.

[0004] In the existing detection process, the forging die can be erected and fixed on a special detection pressure device for repeated stamping, so as to detect the fatigue fracture strength of the mold. Compared with the actual forging production, during detection, the forging die also needs to be fixed on the detection pressure device, and it is necessary to fix the upper die and the lower die of the forging die separately. In the existing detection equipment, generally, the clamping and fixing of the mold are also completed through the cooperation of several mold pressing blocks. However, during the mold strength detection process, in order to improve the detection efficiency, the detection stamping frequency is generally greater than the forging frequency during actual forging production. Therefore, under the repeated stamping detection of higher intensity, the mold itself will generate relatively strong stamping vibrations. In the prior art, a correction plate is used to correct the downward-moving upper die, but the stamping deformation of the upper die is easily interfered by the above structure, and the stamping deformation needs to be observed manually, with poor convenience.

[0005] In view of this, we propose a device for detecting the strength of a pipe mold and a method for using the same. Summary of the Invention

[0006] The object of the present invention is to provide a device for detecting the strength of a pipe mold and its usage method, so as to solve the problems raised in the above-mentioned background technology. In the prior art, a correction plate is used to correct the downward-moving upper mold, but the stamping deformation of the upper mold is easily interfered by the above structure, and the stamping deformation needs to be observed manually, resulting in poor convenience. To achieve the above object, the present invention provides the following technical solution: A device for detecting the strength of a pipe mold includes a base for fixing the lower mold. At the four corners of the top of the base, guide columns are fixedly arranged, and the top ends of the guide columns are fixedly connected to a top cover. A movable seat for fixing the lower mold is arranged below the top cover, and a spring plate is fixedly installed at the bottom of the top cover. Four springs are fixedly installed on the spring plate, and the springs are connected to the four corners of the movable seat. Four track plates are fixedly arranged at the bottom of the top cover and are matched with the four corners of the movable seat.

[0007] A sliding frame for pushing the movable seat to move up and down is slidably connected to the guide column.

[0008] Preferably, a chute is opened on the inner side wall of the sliding frame, and a hook for buckling on the upper side of the movable seat is slidably connected in the chute. A top spring is arranged inside the chute, and the top spring pushes the hook to displace towards the movable seat.

[0009] An insertion hole communicating with the chute is opened at the bottom of the sliding frame. A plug pin corresponding to the insertion hole is fixedly arranged on the base. An inclined groove matched with the plug pin is opened at the bottom of the hook.

[0010] A buffer spring matched with the sliding frame is arranged below the guide column.

[0011] Preferably, four conduits are fixedly inserted on the top cover, and the conduits are arranged in a rectangular array. A probe matched with the movable seat is slidably connected in the conduit. A contact elastic sheet matched with the probe is fixedly arranged on the top surface of the top cover.

[0012] Preferably, a moving groove is opened on the base, and a first clamping plate is slidably connected in the moving groove. A main cylinder is fixedly installed on the side of the base, and the telescopic rod of the main cylinder is connected to the first clamping plate.

[0013] Sliding rails are fixedly arranged on both sides of the first clamping plate, and a second clamping plate is slidably connected to the sliding rails. Two auxiliary cylinders are fixedly arranged on the back of the sliding rails, and the telescopic rods of the auxiliary cylinders are connected to the second clamping plate.

[0014] Preferably, a plurality of calipers are arranged below the movable seat, and fixing bolts are arranged on the calipers.

[0015] Preferably, the upper side of the surface of the hook is set as an inclined side matched with the movable seat.

[0016] Preferably, the probe is provided with a rod-shaped structure, and the probe slides up and down inseparably along the catheter.

[0017] A method for using a pipe mold strength detection device includes the following steps: S1. Fix the lower mold on the base and the upper mold on the movable seat, and control the carriage to drive the movable seat downward so that the upper mold and the lower mold are closed for stamping detection. When the impact vibration causes a misalignment between the upper mold and the lower mold, the spring pulls the movable seat upward to reset, and the position of the movable seat is corrected along the track plate; S2. The carriage moves downward to push the movable seat downward by using a hook. When it reaches the bottom, the bolt presses against the inclined groove along the jack, causing the hook to retract into the chute to release the connection with the movable seat. At this time, the movable seat and the upper mold continue to move downward by inertia to complete stamping, and the carriage contacts the buffer spring for buffering; S3. When the upper mold is deformed or fractured, its own center of gravity changes, and the hanging posture along the spring is deflected. At this time, the upper mold driven upward by the spring does not simultaneously lift the probes at different positions, but lifts the probes along the upturned part, and the contact elastic sheet is not fully triggered, that is, the detection should be stopped when the mold is deformed.

[0018] Compared with the prior art, the beneficial effects of the present invention are: In the present invention, the spring pulls the movable seat upward to reset, and the position of the movable seat is corrected along the track plate. While ensuring the correction effect on the upper mold, it can also avoid the upper mold being restricted by the correction structure during stamping, enabling the mold to deform freely without being affected by interference in terms of the deformation position, deformation direction, and amount of deformation.

[0019] In the present invention, the bolt presses against the inclined groove along the jack, causing the hook to retract into the chute to release the connection with the movable seat. At this time, the movable seat and the upper mold continue to move downward by inertia to complete stamping, and the carriage contacts the buffer spring for buffering. In this way, the force application structure is disconnected from the mold at the stamping critical point. On the one hand, it can avoid the reverse constraint of the force application structure on the upper mold, enabling the upper mold to move objectively with the stamping, and the test effect is accurate. On the other hand, it can also prevent the vibration of the mold from being transmitted to the force application structure and causing damage.

[0020] In the present invention, after the upper mold is deformed or fractured, its own center of gravity changes, and the hanging posture along the spring is deflected. At this time, the upper mold driven upward by the spring does not simultaneously lift the probes at different positions, but lifts the probes along the upturned part, and the contact elastic sheet is not fully triggered, that is, the detection should be stopped when the mold is deformed. In this way, the change in the center of gravity of the movable seat caused by the deformation of the upper mold is used to intuitively prompt the deformation, eliminating the need for the operator to continuously observe the deformation of the mold, thereby improving the detection convenience. Description of the Drawings

[0021] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 Schematic perspective view of the base of the present invention; Figure 3 Bottom view of the top cover, guide posts and carriage of the present invention; Figure 4 Exploded view of the top cover, carriage and track plate of the present invention; Figure 5 Exploded view of the top cover, carriage and movable seat of the present invention; Figure 6 Schematic perspective view of the movable seat and spring of the present invention; Figure 7 Schematic cross-sectional view of the carriage and chute of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of part A in the present invention.

[0022] In the figure: 1, base; 2, guide post; 3, top cover; 4, movable seat; 5, spring plate; 6, spring; 7, track plate; 8, carriage; 9, chute; 10, hook; 11, top spring; 12, jack; 13, pin; 14, inclined groove; 15, buffer spring; 16, conduit; 17, probe; 18, contact elastic sheet; 19, moving groove; 20, first clamping plate; 21, main cylinder; 22, slide rail; 23, second clamping plate; 24, auxiliary cylinder. Specific embodiments

[0023] 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 belong to the scope of protection of the present invention.

[0024] Please refer to Figures 1 to 8 , the present invention provides a technical solution: a device for detecting the strength of a pipe mold, including a base 1 for fixing the lower mold. Guide posts 2 are fixedly arranged at the four corners of the top of the base 1, and the top ends of the guide posts 2 are fixedly connected to a top cover 3. A movable seat 4 for fixing the lower mold is arranged on the lower side of the top cover 3. A spring plate 5 is fixedly installed at the bottom of the top cover 3. Four springs 6 are fixedly installed on the spring plate 5, and the springs 6 are connected to the four corners of the movable seat 4. Four track plates 7 matching the four corners of the movable seat 4 are fixedly arranged at the bottom of the top cover 3. The lower mold is fixed on the base 1, and the upper mold is fixed on the movable seat 4.

[0025] A carriage 8 that is slidably connected to the guide post 2 and pushes the movable seat 4 to move up and down is provided. The carriage 8 is controlled to drive the movable seat 4 to move downwards, so that the upper die and the lower die are closed for stamping inspection. When the impact vibration causes misalignment between the upper die and the lower die, the spring 6 pulls the movable seat 4 to move up and reset, and the movable seat 4 corrects its position along the track plate 7.

[0026] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8 shown, a chute 9 is formed on the inner side wall of the carriage 8, and a hook 10 for buckling on the upper side of the movable seat 4 is slidably connected in the chute 9. A top spring 11 is arranged inside the chute 9, and the top spring 11 pushes the hook 10 to displace towards the movable seat 4. The carriage 8 moves downwards and uses the hook 10 to push the movable seat 4 to move downwards.

[0027] An insertion hole 12 communicating with the chute 9 is formed at the bottom of the carriage 8. A pin 13 corresponding to the insertion hole 12 is fixedly arranged on the base 1. An inclined groove 14 matching with the pin 13 is formed at the bottom of the hook 10. The pin 13 presses against the inclined groove 14 along the insertion hole 12, so that the hook 10 retracts into the chute 9 to release the connection with the movable seat 4.

[0028] A buffer spring 15 matching with the carriage 8 is arranged below the guide post 2. After the carriage 8 moves downwards, it contacts the buffer spring 15 for buffering.

[0029] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8 shown, four conduits 16 are fixedly inserted on the top cover 3, and the conduits 16 are arranged in a rectangular array. A probe 17 matching with the movable seat 4 is slidably connected in the conduit 16. A contact elastic sheet 18 matching with the probe 17 is fixedly arranged on the top surface of the top cover 3. The contact elastic sheet 18 can be linked with an alarm or a force application structure. When the contact elastic sheet 18 is not fully lifted and triggered, the alarm gives an alarm or the force application structure does not control the carriage 8 to continue moving downwards. After the upper die is deformed or broken, its own center of gravity changes, and it deflects along the hanging posture of the spring 6. At this time, the upper die driven by the spring 6 to move upwards does not simultaneously lift the probes 17 at different positions, but lifts the probe 17 along the upturned part.

[0030] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8As shown, a moving groove 19 is formed in the base 1, and a first clamping plate 20 is slidably connected in the moving groove 19. A main cylinder 21 is fixedly installed on the side of the base 1, and the telescopic rod of the main cylinder 21 is connected to the first clamping plate 20. The first clamping plates 20 on both sides are pushed by the main cylinder 21 to clamp each other, so as to fix two sides of the lower die.

[0031] Sliding rails 22 are fixedly arranged on both sides of the first clamping plate 20, and a second clamping plate 23 is slidably connected to the sliding rails 22. Two auxiliary cylinders 24 are fixedly arranged on the back of the sliding rails 22, and the telescopic rods of the auxiliary cylinders 24 are connected to the second clamping plate 23. The second clamping plate 23 on the sliding rails 22 is pushed by the auxiliary cylinders 24 to clamp each other, so as to fix the remaining two sides of the lower die.

[0032] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8 shown, a plurality of calipers are arranged on the lower side of the movable seat 4, and fixing bolts are arranged on the calipers. The upper die is clamped into the calipers, and then the fixing bolts are tightened to fix it.

[0033] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8 shown, the upper side of the surface of the hook 10 is provided with an inclined edge that matches the movable seat 4. When the hook 10 moves upward, it can be reversely pushed along the movable seat 4 by the inclined edge and retracted into the chute 9, so that the hook 10 can be reset to the upper side of the movable seat 4.

[0034] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8 shown, the probe 17 is provided in a rod-shaped structure, and the probe 17 is slidably connected to the catheter 16 in a non-detachable manner up and down, so that the probe 17 can be stably slid by the pushing of the movable seat 4, ensuring the monitoring of the inclined state of the movable seat 4.

[0035] A method for using a device for detecting the strength of a pipe mold includes the following steps: S1. Fix the lower die on the base 1 and the upper die on the movable seat 4, and control the carriage 8 to drive the movable seat 4 to move downward so that the upper die and the lower die are closed for stamping detection. When the impact vibration causes misalignment between the upper die and the lower die, the spring 6 pulls the movable seat 4 to move upward and reset, and the movable seat 4 corrects its position along the track plate 7.

[0036] S2. The carriage 8 moves downward to push the movable seat 4 downward by using the hook 10. When it moves to the bottom, the latch 13 presses against the inclined groove 14 along the jack 12, causing the hook 10 to retract into the sliding groove 9 to release the connection with the movable seat 4. At this time, the movable seat 4 and the upper die continue to move downward by inertia to complete stamping, and the carriage 8 contacts the buffer spring 15 for buffering.

[0037] S3. After the upper die is deformed or fractured, its own center of gravity changes, and the suspension posture along the spring 6 is deflected. At this time, the upper die driven by the spring 6 to move upward does not simultaneously lift the probes 17 at different positions, but lifts the probes 17 along the upwardly warped part, and the contact elastic pieces 18 are not all triggered, that is, the detection should stop when the mold is deformed.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only the preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the strength of a pipe mold, comprising a base (1) for fixing a lower mold, characterized in that: Guide columns (2) are fixedly arranged at the four corners of the top of the base (1), and the top of the guide column (2) is fixedly connected to a top cover (3), a movable seat (4) for fixing the lower mold is arranged on the lower side of the top cover (3), and a spring plate (5) is fixedly installed at the bottom of the top cover (3), four springs (6) are fixedly installed on the spring plate (5), and the springs (6) are connected to the four corners of the movable seat (4), and four track plates (7) matching the four corners of the movable seat (4) are fixedly arranged at the bottom of the top cover (3); The guide column (2) is slidably connected to a slide bracket (8) for pushing the movable seat (4) to move up and down.

2. A pipe mold strength detection device according to claim 1, characterized in that: A slide groove (9) is provided on the inner side wall of the slide frame (8), and a hook (10) is slidably connected in the slide groove (9) and is used to be buckled on the upper side of the movable seat (4). A top spring (11) is provided inside the slide groove (9), and the top spring (11) pushes the hook (10) to move toward the movable seat (4); The bottom of the slide (8) is provided with a plug hole (12) connected to the slide groove (9); a latch (13) corresponding to the plug hole (12) is fixedly provided on the base (1); and the bottom of the hook (10) is provided with an inclined groove (14) matching with the latch pin (13); A buffer spring (15) matching with the slide bracket (8) is arranged on the lower side of the guide column (2).

3. A device for detecting the strength of a pipe mold according to claim 2, characterized in that: Four conduits (16) are fixedly plugged onto the top cover (3), and the conduits (16) are in a rectangular array. Probes (17) cooperating with the movable seat (4) are slidably connected inside the conduits (16), and contact springs (18) cooperating with the probes (17) are fixedly arranged on the top surface of the top cover (3).

4. The device for detecting the strength of a pipe mold according to claim 1, characterized in that: The base (1) is provided with a movable groove (19), and a first clamping plate (20) is slidably connected in the movable groove (19); a main cylinder (21) is fixedly mounted on the side of the base (1), and a telescopic rod of the main cylinder (21) is connected to the first clamping plate (20); Slide rails (22) are fixedly arranged on both sides of the first clamping plate (20), and a second clamping plate (23) is slidably connected to the slide rails (22). Two auxiliary cylinders (24) are fixedly arranged on the back of the slide rails (22), and telescopic rods of the auxiliary cylinders (24) are connected to the second clamping plate (23).

5. The device for detecting the strength of a pipe mold according to claim 1, characterized in that: A plurality of calipers are arranged on the lower side of the movable seat (4), and fixing bolts are arranged on the calipers.

6. The device for detecting the strength of a pipe mold according to claim 2, characterized in that: The upper side of the surface of the hook (10) is configured as a beveled edge that matches the movable seat (4).

7. The device for detecting the strength of a pipe mold according to claim 3, characterized in that: The probe (17) is configured as a rod-shaped structure, and the probe (17) is configured to slide up and down along the catheter (16) in an inseparable manner.

8. A method for using a pipe mold strength detection device, using the pipe mold strength detection device as claimed in claim 3, characterized in that: The steps include: S1. Fix the lower die on the base (1), fix the upper die on the movable seat (4), and control the slide (8) to drive the movable seat (4) to move downward, so that the upper die and the lower die are closed to perform stamping inspection. When the impact vibration causes the alignment deviation between the upper die and the lower die, the spring (6) pulls the movable seat (4) upward to reset, and the position of the movable seat (4) along the track plate (7) is corrected; S2, the slide (8) moves downward and uses the hook (10) to push the movable seat (4) downward. When it moves to the bottom, the latch (13) presses against the inclined groove (14) along the insertion hole (12), so that the hook (10) retracts into the slide groove (9) to release the connection with the movable seat (4). At this time, the movable seat (4) and the upper die continue to move downward with inertia to complete the stamping, and the slide (8) contacts the buffer spring (15) for buffering; S3. When the upper die is deformed and broken, its center of gravity changes and the suspension posture along the spring (6) deflects. At this time, the upper die driven upward by the spring (6) does not lift up the probes (17) at different positions at the same time, but lifts up the probes (17) along the upward part. The contact spring (18) is not fully triggered, that is, the mold deformation detection should be stopped.

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