A device for detecting the strength of a pipe mold and its usage method

Abstract

The present invention relates to the technical field of mold detection, and specifically relates to a device for detecting the strength of a pipe mold and its usage method, including a base for fixing the lower mold. Guide columns are fixedly arranged at the four corners of the top of the base, and the top ends of the guide columns are fixedly connected to a top cover. An activity seat for fixing the lower mold is arranged on the lower side of the top cover, and a spring plate is fixedly installed at the bottom of the top cover. For this device for detecting the strength of a pipe mold and its usage method, after the upper mold is deformed or fractured, its own center of gravity changes, and it deflects along the hanging posture of the spring. At this time, the upper mold driven by the spring to move upward does not simultaneously lift the probes at different positions, but lifts the probes along the upturned part, and the contact elastic pieces are not all triggered, that is, when the mold is deformed, the detection should be stopped. In this way, the change in the center of gravity of the activity seat caused by the deformation of the upper mold is used to visually prompt the deformation, without the operator continuously observing the deformation of the mold, improving the detection convenience.

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 for injection molding, blow molding, extrusion, die casting, forging, smelting, stamping, etc. to obtain the required products. It mainly realizes the processing of the article's outer shape through the change of the physical state of the formed material. A mold is a precision tool with a complex shape that withstands the expansion force of the blank. Most of them have many high requirements for their own structural strength, stiffness, surface hardness, surface roughness, machining accuracy, etc. For example, a pipe mold needs to ensure that the manufactured pipe has good machining accuracy to ensure the accurate installation of the pipe.

[0003] According to the processed and formed materials, molds can be divided into two 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, forging dies are molds used in the forging production process. Under the action of external forces 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 forging part with the required shape and size. In the actual forging production process, the working environment of the forging die is harsh and it needs to withstand 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 dedicated detection pressure device for repeated stamping, so as to detect the fatigue fracture strength of the mold. Compared with the actual forging production, when detecting, 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, in the process of mold strength detection, in order to improve the detection efficiency, the detection stamping frequency is generally greater than the forging frequency in the 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 that 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 solutions: 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 provided, 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 matching the four corners of the movable seat are fixedly provided at the bottom of the top cover.

[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 pin corresponding to the insertion hole is fixedly provided on the base, and an inclined groove matching the pin is opened at the bottom of the hook.

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

[0011] Preferably, four guide pipes are fixedly inserted on the top cover, and the guide pipes are arranged in a rectangular array. A probe matching the movable seat is slidably connected in the guide pipes, and a contact elastic sheet matching the probe is fixedly provided 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 provided 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 provided 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 matching 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 device for detecting the strength of a pipe mold includes the following steps:

[0018] S1. Fix the lower mold on the base, fix the upper mold on the movable seat, and control the carriage to drive the movable seat to move downward so that the upper mold and the lower mold are closed for stamping detection. When the impact vibration causes 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;

[0019] 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 insertion hole, 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;

[0020] 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 by the spring to move upward does not simultaneously lift the probes at different positions, but lifts the probes along the upturned part, and the contact elastic pieces are not all triggered, that is, when the mold is deformed, the detection should be stopped.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 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 constraint of the upper mold by the correction structure during stamping, enabling the mold to deform freely without being affected by interference in the deformation position, deformation direction, and amount of deformation.

[0023] In the present invention, the bolt presses against the inclined groove along the insertion hole, 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 critical point of stamping. 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 stamping, and the test effect is accurate. On the other hand, it can also avoid the vibration of the mold being transmitted to the force application structure and causing damage.

[0024] 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 by the spring to move upward does not simultaneously lift the probes at different positions, but lifts the probes along the upturned part, and the contact elastic pieces are not all triggered, that is, when the mold is deformed, the detection should be stopped. 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 visually indicate 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

[0025] Figure 1 is a schematic three-dimensional structure diagram of the present invention;

[0026] Figure 2 is a schematic three-dimensional structure diagram of the base of the present invention;

[0027] Figure 3 is a bottom view of the top cover, guide posts and carriage of the present invention;

[0028] Figure 4 is an exploded view of the top cover, carriage and track plate of the present invention;

[0029] Figure 5 is an exploded view of the top cover, carriage and movable seat of the present invention;

[0030] Figure 6 is a schematic three-dimensional structure diagram of the movable seat and spring of the present invention;

[0031] Figure 7 is a schematic cross-sectional view of the three-dimensional structure of the carriage and chute of the present invention;

[0032] Figure 8 For the present invention Figure 7 is an enlarged view of part A in

[0033] 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. Plug pin; 14. Inclined groove; 15. Buffer spring; 16. Duct; 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. Detailed implementation manners

[0034] 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 of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] 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 columns 2 are fixedly arranged at the four corners of the top of the base 1, and the top ends of the guide columns 2 are fixedly connected to a top cover 3. A movable seat 4 for fixing the lower mold is arranged below 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. Four track plates 7 that cooperate with 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.

[0036] A carriage 8 for pushing the movable seat 4 to move up and down is slidably connected to the guide column 2. The carriage 8 is controlled to drive the movable seat 4 to move downwards, so that the upper mold and the lower mold are closed for stamping detection. When the impact vibration causes a deviation in the alignment between the upper mold and the lower mold, 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.

[0037] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8 shown, a chute 9 is opened 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.

[0038] An insertion hole 12 communicating with the chute 9 is opened 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 slot 14 cooperating with the pin 13 is opened at the bottom of the hook 10. The pin 13 presses against the inclined slot 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.

[0039] A buffer spring 15 cooperating with the carriage 8 is arranged below the guide column 2. After the carriage 8 moves downwards, it contacts the buffer spring 15 for buffering.

[0040] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8As shown, four conduits 16 are fixedly inserted into the top cover 3, and the conduits 16 are arranged in a rectangular array. A probe 17 that cooperates with the movable seat 4 is slidably connected inside the conduit 16. A contact elastic piece 18 that cooperates with the probe 17 is fixedly arranged on the top surface of the top cover 3. The contact elastic piece 18 can be linked to an alarm or a force application structure. When the contact elastic piece 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 downward. After the upper die deforms and breaks, 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 upward does not simultaneously lift the probes 17 at different positions, but lifts the probe 17 along the upturned part.

[0041] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8 shown, a moving groove 19 is formed in the base 1, and a first clamping plate 20 is slidably connected inside 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 perform clamping to fix two sides of the lower die.

[0042] 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 perform clamping to fix the remaining two sides of the lower die.

[0043] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8 shown, a number 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.

[0044] 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 side that cooperates with the movable seat 4. When the hook 10 moves upward, it can be reversely pushed along the movable seat 4 by the inclined side and retracted into the chute 9, so that the hook 10 can be reset to the upper side of the movable seat 4.

[0045] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 、Figures 5 to 8 As shown, the probe 17 is provided as a rod-shaped structure, and the probe 17 is configured to slide up and down inseparably along the catheter 16, so that the probe 17 can be stably slid by the pushing of the movable seat 4, ensuring the monitoring of the inclination state of the movable seat 4.

[0046] A method for using a device for detecting the strength of a pipe mold includes the following steps:

[0047] S1. Fix the lower mold on the base 1, fix the upper mold on the movable seat 4, and control the carriage 8 to drive the movable seat 4 to move downwards, 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 6 pulls the movable seat 4 to move upwards and reset, and the movable seat 4 corrects its position along the track plate 7.

[0048] S2. The carriage 8 moves downwards to push the movable seat 4 downwards by using the hook 10. When it reaches the bottom, the bolt 13 presses against the inclined groove 14 along the jack 12, so that the hook 10 retracts into the chute 9 to release the connection with the movable seat 4. At this time, the movable seat 4 and the upper mold continue to move downwards by inertia to complete the stamping, while the carriage 8 contacts the buffer spring 15 for buffering.

[0049] S3. When the upper mold is deformed or broken, its own center of gravity changes, and the hanging posture along the spring 6 is skewed. At this time, the upper mold 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, and the contact elastic sheet 18 is not fully triggered, that is, the detection should be stopped when the mold is deformed.

[0050] 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 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 the lower mold, characterized in that: Guide posts (2) are fixedly arranged at the four corners of the top of the base (1), and a top cover (3) is fixedly connected to the top ends of the guide posts (2). An activity seat (4) for fixing the lower die 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 activity seat (4). Four track plates (7) matching the four corners of the activity seat (4) are fixedly arranged at the bottom of the top cover (3); A carriage (8) for pushing the activity seat (4) to move up and down is slidably connected to the guide post (2); 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 activity 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 activity seat (4); An insertion hole (12) communicating with the chute (9) is formed at the bottom of the carriage (8). A bolt (13) corresponding to the insertion hole (12) is fixedly arranged on the base (1). An inclined groove (14) matching the bolt (13) is formed at the bottom of the hook (10); A buffer spring (15) matching the carriage (8) is arranged on the lower side of the guide post (2).

2. The tube mold strength detection device according to claim 1, wherein: 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 the activity seat (4) is slidably connected in the conduit (16). A contact elastic sheet (18) matching the probe (17) is fixedly arranged on the top surface of the top cover (3).

3. The strength detection device for a pipe mold according to claim 2, characterized in that: A moving groove (19) is formed on 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); 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 the telescopic rods of the auxiliary cylinders (24) are connected to the second clamping plate (23).

4. A tube mold strength detection device according to claim 1, characterized in that: A plurality of calipers are arranged on the lower side of the activity seat (4), and fixing bolts are arranged on the calipers.

5. A device for detecting the strength of a pipe mold according to claim 1, characterized in that: The upper side of the surface of the hook (10) is set as an inclined side matching the activity seat (4).

6. The strength detection device for a pipe mold according to claim 2, wherein: The probe (17) is set as a rod-shaped structure, and the probe (17) slides up and down along the conduit (16) in a non-detachable manner.

7. A method for using a pipe mold strength detection device, which uses a pipe mold strength detection device as described in claim 3, characterized in that, Including the following steps: S1. Fix the lower die on the base (1), fix the upper die on the activity seat (4), and control the carriage (8) to drive the activity seat (4) to move downwards so that the upper die and the lower die are closed for stamping detection. When the impact vibration causes a deviation in the alignment between the upper die and the lower die, the spring (6) pulls the activity seat (4) to move upwards for resetting, and the activity seat (4) corrects its position along the track plate (7); 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, while the carriage (8) contacts the buffer spring (15) for buffering; S3. When 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 upturned part, and the contact elastic pieces (18) are not all triggered, that is, the detection should stop when the die is deformed.

Images