Progressive die with telescopic cut-off tool

Abstract

The utility model belongs to the field of progressive die cut-off devices, and discloses a progressive die with a telescopic cut-off tool, which comprises a movable die, and a sliding guide structure is arranged at the bottom of the movable die; the cut-off mechanism comprises a cut-off tool and a reset assembly, the cut-off tool is movably installed at the bottom of the movable mold, and the reset assembly is used for driving the cut-off tool to rise in the longitudinal direction relative to the movable mold; the driving assembly is installed on the guide sliding structure and used for driving the cut-off tool to descend in the longitudinal direction relative to the movable mold; and the top surface of the fixed die is provided with a cut-off opening matched with the cut-off tool. The cut-off tool is movably installed on the bottom face of the movable die, and the reset assembly and the driving assembly are used in cooperation to control the height of the cut-off tool, so that the height of the cut-off tool can be reduced through the driving assembly when the progressive die needs to cut materials, the cut-off tool can conduct punching when the progressive die conducts punching at the next time, and when the progressive die does not need to cut materials, the cut-off tool can conduct punching at the same time. The height of the cut-off tool is increased through the reset assembly, so that the cut-off tool does not interfere with coil stock when the progressive die works normally.

Description

Technical Field

[0001] This utility model belongs to the technical field of progressive die cutting devices, specifically relating to a progressive die with a retractable cutting blade. Background Technology

[0002] When a batch of progressive dies is completed or during maintenance or repair, if there are unprocessed rolls of material in the die, it is usually necessary to manually insert a hand tool into the die to cut the rolls and recycle them. However, due to the close arrangement and small gaps of progressive dies, it is difficult for workers to cut the rolls, and manual operation poses safety hazards. In addition, improper operation by workers can easily damage the die.

[0003] Therefore, a progressive die with a retractable cutting blade is needed to achieve the purpose of the cutting blade not working during normal progressive stamping of the coil material, and extending to cut the coil material when material cutting is required. Utility Model Content

[0004] The present invention aims to provide a progressive die with a retractable cutting blade to solve the problems mentioned above, such as the inconvenience and safety hazards of manual material cutting in progressive dies.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a progressive die with a retractable cutting blade, comprising...

[0006] The moving mold has a guide sliding structure at the bottom;

[0007] The cutting mechanism includes a cutting blade and a reset assembly. The cutting blade is movably mounted on the bottom of the moving mold, and the reset assembly is used to drive the cutting blade to rise longitudinally relative to the moving mold.

[0008] A drive assembly, mounted on a guide slide structure, is used to drive the cutting blade to descend longitudinally relative to the moving mold.

[0009] The fixed mold has a cutting edge on its top surface that is compatible with the cutting blade.

[0010] The principle and effects of this technical solution:

[0011] 1. By movably mounting the cutting blade on the bottom surface of the moving die, and using a reset component and a drive component to control the height of the cutting blade, the cutting blade can be lowered by the drive component when the progressive die needs to cut the material, so that the cutting blade can cut during the next punching of the progressive die. When the progressive die does not need to cut the material, the cutting blade height can be raised by the reset component, so that the cutting blade will not interfere with the coiled material when the progressive die is working normally.

[0012] 2. The drive assembly is guided and restricted by the guide slide structure, so that the drive assembly can be stably installed on the moving mold and the height of the cutting blade can be stably controlled.

[0013] The present invention is further configured such that: the cutting mechanism includes a fixed block and a slider, the fixed block has a U-shaped cross section, the fixed block is fixed to the bottom surface of the moving mold, the slider is slidably fitted inside the fixed block, the cutting blade is installed on the slider, and the bottom surface of the cutting blade extends to below the bottom surface of the fixed block.

[0014] The principle and effect of this technical solution: By cooperating with the fixed block and the slider, the slider can only move up and down along the fixed block, thereby limiting the movement trajectory of the cutting blade installed on the slider. The fixed block is fixed to the moving mold with bolts, making it easier to disassemble and assemble the cutting blade and other components during subsequent maintenance. The U-shaped cross section of the fixed block allows the drive component to slide within the guide structure and also extend into the fixed block to drive the slider.

[0015] The present invention is further configured such that: the slider has lugs on both sides, and a guide groove is correspondingly provided on the inner wall of the fixing block, and the lugs slide in cooperation with the guide groove.

[0016] The principle and effect of this technical solution: The lug can limit and guide the sliding of the slider, making the sliding of the slider within the fixed block more stable. At the same time, it can share the lateral force on the cutting blade when it is inserted relative to the fixed block, thus protecting the cutting blade.

[0017] The present invention is further configured such that: the reset component is a nitrogen spring, the nitrogen spring is installed at the bottom of the guide groove, and the top of the nitrogen spring abuts against the lug.

[0018] The principle and effect of this technical solution: By setting up a nitrogen spring, the lug of the slider can be subjected to a spontaneous upward force. That is, the worker only needs to release the downward pressure of the drive component on the slider, and the slider can automatically rise under the control of the rebound force of the nitrogen spring, thus eliminating the need for further manual control and saving manpower.

[0019] The present invention is further configured such that: the driving assembly includes a driving rod, the driving rod is adapted to the guide slide structure, the driving rod has adjacent pressing section and yielding section, the bottom surface of the pressing section is lower than the bottom surface of the yielding section, there is an inclined surface between the bottom surface of the pressing section and the bottom surface of the yielding section, and the pressing section abuts against the top surface of the slider.

[0020] The principle and effect of this technical solution are as follows: By setting up a pressure section, a clearance section, and a transition slope with different bottom surface heights on the drive rod, and using it in conjunction with the reset component, the edge of the slider abuts against the slope and is subjected to pressure from the slope. This allows the worker to control the drive rod to press the slider, thereby forcing the slider height to decrease. After the top surface of the slider abuts against the pressure section, the fixed block, slider, pressure section, and moving mold are mutually pressed together, and the cutting blade position is fixed, enabling stable cutting of the coiled material. Furthermore, when the reset component resets, i.e., when the worker controls the pressure section to move away from the slider, the slider can also rise smoothly under the transition of the slope, protecting the cutting blade.

[0021] The present invention is further configured such that: the guide slide structure includes a slide groove and a limiting plate, the slide groove is opened at the bottom of the moving mold and is connected to the inner side of the fixed block, the limiting plate is fixed at the bottom of the moving mold and its position corresponds to the slide groove, the drive rod also has a guide slide section, the guide slide section is located on the side of the relief section away from the pressing section, the guide slide section, the relief section and the pressing section are all slidably fitted in the slide groove, and the bottom surface of the guide slide section abuts against the top surface of the limiting plate.

[0022] The principle and effect of this technical solution: The drive rod is adapted and guided by the slide groove, and with the use of the limiting plate, both ends of the drive rod can be abutted and limited (one end abuts against the slider, and the other end abuts against the limiting plate), so that the drive rod can slide stably along the slide groove, thereby stably controlling the slider to change position.

[0023] The present invention is further configured such that: the top of the limiting plate has a protrusion, and the bottom of the guide slide section has a groove, with the protrusion and the groove slidingly engaged.

[0024] The principle and effect of this technical solution: The protrusions and grooves allow the limiting plate to further guide the sliding of the drive rod. Simultaneously, by controlling the length and position of the grooves, the sliding stroke of the drive rod can be limited through the cooperation of the grooves and protrusions, thereby preventing the drive rod from sliding out of the groove and ensuring the stability of the drive rod during use.

[0025] The present invention is further configured such that: a limiting component is installed on the side wall of the moving mold, the limiting component includes a sleeve, a connecting rod, a handle and an insert block, the sleeve is fixed to the side wall of the moving mold, the connecting rod is slidably inserted into the sleeve, the handle is fixed to the top of the connecting rod and abuts against the top surface of the sleeve, the insert block is fixed to the bottom of the connecting rod and is slidably inserted into the sleeve, and a limiting groove is opened on the top surface of the guide section, and the insert block is inserted into the limiting groove.

[0026] The principle and effect of this technical solution: By inserting the insert block into the upper limit groove of the guide slide section or abutting against the end of the guide slide section (at which time the fit size between the drive rod and the slide groove is the largest), the position of the drive rod is restricted, avoiding the situation where the drive rod moves out of position due to factors such as shaking during the up and down movement of the moving mold, thus ensuring the stability of the drive rod position. It also prevents the abutting section and the slider from abutting uncontrollably due to the misalignment of the drive rod, and prevents the cutting blade from being in the wrong cutting position, thus ensuring the reliability of the cutting blade. Furthermore, it prevents the drive rod from coming out of the slide groove, thus ensuring the stability of the abutment between the slider and the drive rod.

[0027] The present invention is further provided with a guide surface on the bottom side of the insert block away from the moving mold.

[0028] The principle and effect of this technical solution: The setting of the guide surface allows the limiting groove of the guide section to automatically leave the limiting groove through the contact tendency between the groove and the guide surface when the user pushes the drive rod into the groove, thus eliminating the need for manual control of the insert to leave the limiting groove and saving manpower.

[0029] The present invention is further configured such that: the limiting component also includes a limiting spring, which is installed inside the sleeve and located above the insert block.

[0030] The principle and effect of this technical solution: The setting of the limiting spring allows the insert block to move downward spontaneously under the influence of the rebound force of the limiting spring, so that the insert block can maintain a stable position when it is inserted into the limiting groove or abuts the end of the guide slide section. This prevents the insert block from releasing the limiting of the guide slide section due to shaking / fluctuation during the lifting and lowering of the moving mold, thus improving the stability of the limiting component's limiting ability. Attached Figure Description

[0031] Figure 1 This is the front view of the present invention;

[0032] Figure 2 for Figure 1 Cross-sectional view of section AA;

[0033] Figure 3 for Figure 2 Enlarged structural diagram of the central drive rod;

[0034] Figure 4 for Figure 3 Axonal structural diagram;

[0035] Figure 5 for Figure 4 Exploded view of the fixed block in the middle;

[0036] Figure 6 for Figure 4 A diagram of the structure viewed from below;

[0037] Figure 7 for Figure 1 Top view of the structure at the mid-moving module;

[0038] Figure 8 for Figure 1 Top view of the structure at the center mold;

[0039] Figure 9 This is a diagram of the material strip corresponding to this utility model. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0041] The reference numerals in the accompanying drawings include:

[0042] 101. Moving mold; 102. Slide groove;

[0043] 201. Fixing block; 202. Guide groove; 203. Slider; 204. Lug; 205. Cutting blade; 206. Nitrogen spring;

[0044] 301. Drive rod; 311. Pressing section; 312. Yielding section; 313. Guide slide section; 314. Groove; 315. Limiting groove;

[0045] 401. Limiting plate; 402. Protrusion;

[0046] 501. Sleeve; 502. Connecting rod; 503. Handle; 504. Insert block; 505. Limiting spring;

[0047] 601. Fixed mold; 602. Cut-off point.

[0048] Example:

[0049] As attached Figure 1-9 As shown, this utility model discloses a retractable progressive die for cutting, including a moving die 101, a guide structure, a cutting mechanism, a drive assembly, and a fixed die 601. The moving die 101 is connected to the hydraulic push rod of a hydraulic cylinder, and the fixed die 601 is mounted on a machine base. The guiding, limiting, and stripping structures between the moving die 101 and the fixed die 601 are common knowledge to those skilled in the art. Their specific structures are designed according to the different actual products, and therefore will not be elaborated upon in this solution, but only mentioned in the appendix. Figure 7 , 8 A simple illustration is given in section 9.

[0050] The cutting mechanism includes a cutting blade 205, a reset assembly, a fixing block 201, and a slider 203. The fixing block 201 has a U-shaped cross-section and is fixed to the bottom surface of the moving mold 101. The slider 203 is slidably fitted within the fixing block 201, and has lugs 204 on both sides. A guide groove 202 is correspondingly provided on the inner wall of the fixing block 201, and the lugs 204 slidably engage with the guide grooves 202. The cutting blade 205 is mounted on the slider 203, and its bottom surface extends below the bottom surface of the fixing block 201. The reset assembly is a nitrogen spring 206, which is mounted at the bottom of the guide groove 202, and its top surface abuts against the lugs 204. (The slider 203 includes two plates, upper and lower, positioned by screws and pins (as shown in the attached diagram)). Figure 3 , 4 (As shown in Figure 5).

[0051] The drive assembly includes a drive rod 301, which is adapted to the guide slide structure. The drive rod 301 has a pressing section 311, a yielding section 312 and a guide slide section 313 that are adjacent to each other in sequence. The bottom surface of the pressing section 311 is lower than the bottom surface of the yielding section 312. There is an inclined surface between the bottom surface of the pressing section 311 and the bottom surface of the yielding section 312. The pressing section 311 abuts against the top surface of the slider 203. The top surfaces of the pressing section 311, the yielding section 312 and the guide slide section 313 are all flush.

[0052] The bottom of the moving mold 101 is provided with a guide structure, which includes a slide groove 102 and a limiting plate 401. The slide groove 102 is opened at the bottom of the moving mold 101 and is connected to the inner side of the fixed block 201. The limiting plate 401 is fixed to the bottom of the moving mold 101 and its position corresponds to the slide groove 102. The guide section 313, the clearance section 312 and the pressing section 311 are all slidably fitted in the slide groove 102, and the bottom surface of the guide section 313 abuts against the top surface of the limiting plate 401. The top of the limiting plate 401 has a protrusion 402, and the bottom of the guide section 313 has a groove 314. The protrusion 402 and the groove 314 are slidably fitted.

[0053] A limiting assembly is installed on the side wall of the moving mold 101. The limiting assembly includes a sleeve 501, a connecting rod 502, a handle 503, and an insert block 504. The sleeve 501 is fixed to the side wall of the moving mold 101. The connecting rod 502 is slidably inserted into the sleeve 501. The handle 503 is fixed to the top of the connecting rod 502 and abuts against the top surface of the sleeve 501. The insert block 504 is fixed to the bottom of the connecting rod 502 and is slidably inserted into the sleeve 501. A limiting groove 315 is formed on the top surface of the guide slide section 313. The insert block 504 is inserted into the limiting groove 315. A guide surface is formed on the bottom side of the insert block 504 away from the moving mold 101. The limiting assembly also includes a limiting spring 505, which is installed in the sleeve 501 and located above the insert block 504.

[0054] The fixed mold 601 has a cutting opening 602 on its top surface that is adapted to the cutting blade 205.

[0055] When the drive rod 301 is fully engaged in the slide groove 102, the end of the guide section 313 of the drive rod 301 abuts against the side of the insert block 504 near the moving mold 101.

[0056] By mounting the cutting blade 205 on the slider 203, and movably setting the slider 203 within the fixed block 201, the position of the slider 203 can be changed by the drive rod 301, and the slider 203 can be moved away from the fixed mold 601 by the reset assembly. This allows the height of the cutting blade 205 to be changed, so that the cutting blade 205 can be lowered when needed to cut the coil or strip material in the next stamping, and raised when not needed to prevent the cutting blade 205 from contacting the strip or coil material during stamping.

[0057] By setting the pressing section 311 and the yielding section 312 with different bottom surface heights through the drive rod 301, the cutting blade 205 can be positioned at different heights. When the pressing section 311 of the drive rod 301 presses against the slider 203, the bottom surface of the slider 203 abuts against the bottom surface of the inner side of the fixed block 201, and the top surface of the pressing section 311 abuts against the top surface of the slide groove 102. At this time, the cutting blade 205 is at the lowest working point and will not change position due to the force in the vertical direction. That is, the cutting blade 205 will perform cutting work in the next stamping. When the yielding section 312 of the drive rod 301 presses against the slider 203, since the bottom surface of the yielding section 312 is higher than the pressing section 311, the reset component tends the slider 203 to move closer to the slide groove 102, which drives the cutting blade 205 away from the fixed mold 601. At this time, the cutting blade 205 is at the highest working point and is driven by the spontaneous driving force of the reset component. The cutting blade 205 will not change position when the moving mold 101 moves downward. Therefore, during stamping, the cutting blade 205 will not contact the coiled material and will not interfere with the normal stamping work. That is, the state of the cutting blade 205 can be adjusted by setting up the drive rod 301 and the cutting mechanism.

[0058] By pushing and pulling the drive rod 301, the position of the drive rod 301 within the slide groove 102 can be changed, which alters the height of the bottom surface of the drive rod 301 corresponding to the top surface of the slider 203. This achieves the effect of controlling the position of the cutting blade 205. The inclined surface allows the drive rod 301 to move smoothly and gently when pressing (yielding) against the slider 203, avoiding movement interference. The above description is merely an embodiment of this utility model. Commonly known technical solutions or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and they will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A progressive die for retractable cutting knives, characterized in that: include The moving mold has a guide sliding structure at the bottom; A cutting mechanism includes a cutting blade and a reset assembly. The cutting blade is movably mounted on the bottom of the moving mold, and the reset assembly is used to drive the cutting blade to rise longitudinally relative to the moving mold. A drive assembly, mounted on the guide slide structure, is used to drive the cutting blade to descend longitudinally relative to the moving mold; The mold has a cutting edge on its top surface that is adapted to the cutting blade.

2. A retractable progressive die for cutting off a blade as claimed in claim 1, wherein: The cutting mechanism further includes a fixed block and a slider. The fixed block has a U-shaped cross-section and is fixed to the bottom surface of the moving mold. The slider is slidably fitted inside the fixed block, and the cutting blade is mounted on the slider. The bottom surface of the cutting blade extends below the bottom surface of the fixed block.

3. A retractable progressive die for cutting off a blade as claimed in claim 2, wherein: The slider has lugs on both sides, and the inner wall of the fixing block has a corresponding guide groove, with the lugs slidingly engaging with the guide groove.

4. A retractable progressive die for cutting off a blade as claimed in claim 3, wherein: The reset assembly is a nitrogen spring, which is installed at the bottom of the guide groove, and the top of the nitrogen spring abuts against the lug.

5. A retractable progressive die for cutting off a blade as claimed in claim 2, wherein: The driving assembly includes a driving rod adapted to the guide slide structure. The driving rod has adjacent pressing sections and yielding sections. The bottom surface of the pressing section is lower than the bottom surface of the yielding section. There is an inclined surface between the bottom surface of the pressing section and the bottom surface of the yielding section. The pressing section abuts against the top surface of the slider.

6. A retractable progressive die for cutting off a blade as claimed in claim 5, wherein: The guide structure includes a slide groove and a limiting plate. The slide groove is opened at the bottom of the moving mold and is connected to the inner side of the fixed block. The limiting plate is fixed to the bottom of the moving mold and is positioned corresponding to the slide groove. The drive rod also has a guide section. The guide section is located on the side of the relief section away from the pressing section. The guide section, the relief section and the pressing section are all slidably fitted in the slide groove, and the bottom surface of the guide section abuts against the top surface of the limiting plate.

7. A retractable progressive die for cutting off a blade as claimed in claim 6, wherein: The top of the limiting plate has a protrusion, and the bottom of the guide slide section has a groove, with the protrusion and the groove slidingly engaged.

8. The retractable progressive die for cutting blade as described in claim 6, characterized in that: A limiting assembly is installed on the side wall of the moving mold. The limiting assembly includes a sleeve, a connecting rod, a handle, and an insert. The sleeve is fixed to the side wall of the moving mold. The connecting rod is slidably inserted into the sleeve. The handle is fixed to the top of the connecting rod and abuts against the top surface of the sleeve. The insert is fixed to the bottom of the connecting rod and is slidably inserted into the sleeve. A limiting groove is formed on the top surface of the guide section, and the insert is inserted into the limiting groove.

9. A retractable progressive die for cutting blade as described in claim 8, characterized in that: The bottom of the insert block has a guide surface on the side away from the moving mold.

10. A retractable progressive die for cutting blade as described in claim 8, characterized in that: The limiting assembly also includes a limiting spring, which is installed inside the sleeve and located above the insert block.

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