Stable replacement mechanism for punch press die

Abstract

The invention discloses a stable replacement mechanism for a punch press die, and belongs to the technical field of punch press die replacement. A stable replacement mechanism for a punch press die comprises an upper die and a lower die matched with the upper die, a male die is formed on the bottom wall of the upper die, a groove is formed in the position, corresponding to the upper die, of the top wall of the lower die in an inward concave mode, and a female die which is correspondingly matched with the male die to machine parts is arranged in the groove in a sliding mode. A plurality of adjusting assemblies are jointly arranged on the two corresponding sides of the female die and the lower die and sleeved with first springs, the first springs are used for providing damping elastic force between the female die and the lower die, and the adjusting assemblies are used for adjusting the elastic force of the first springs. The female die additionally arranged on the lower die is matched with the upper die, only the female die needs to be replaced during replacement, die replacement is more flexible, and the stability of the die in the replacement process is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of punch press die replacement, in particular to a punch press die stable replacement mechanism. Background Art

[0002] Punch press is the abbreviation of digital control punch press. It is an automated machine tool equipped with a program control system. The control system can logically process programs specified by control codes or other symbolic instructions and decode them, so that the punch press can operate and process parts. Punch presses can be used to process various types of thin metal plate parts. They can automatically complete a variety of complex hole shapes and shallow drawing forming processes at one time. Through a simple mold combination, compared with traditional stamping, it saves a lot of mold costs. It can use low cost and short cycle to process small batches and diversified products. It has a large processing range and processing capacity, so as to adapt to market and product changes in a timely manner.

[0003] The existing patent application number is CN201811641628.4; a quick mold replacement device for a CNC punch press is disclosed, which can remove the insertion rod from the inside of the fifth socket by sliding the sliding plate; it can replace the punch press model at any time, effectively avoiding the problem that the punch press model is not easy to replace; it can fix the punch press model by the landing of the fixed plate; effectively increase the stability of the punch press model; it can make the fixed plate play a certain buffering role when it lands through the elastic force of the first buffer spring; effectively avoid the phenomenon of damage to the fixed plate. However, the invention has the following disadvantages: due to the different weights of different parts, when parts of different weights are installed on the CNC punch press, the compression degree of the spring will be different, and the punching stroke and punching force of the CNC punch press are certain, which will make the punching force of the CNC punch press on different workpieces too high or too low when punching the workpiece on the punching die, and the quality of the processed parts is different, making the use of the CNC punch press very unstable, and the spring in the equipment needs to be replaced when it is adjusted, wasting a lot of workers' working time. Summary of the invention

[0004] The invention provides a stable replacement mechanism for a punching machine die, which can overcome certain defects of the prior art.

[0005] According to the present invention, a stable replacement mechanism for a punching machine mold includes an upper mold and a lower mold that cooperates with the upper mold. A punch is formed at the bottom wall of the upper mold, and a groove is formed at the corresponding top walls of the lower mold and the upper mold. A concave mold that cooperates with the punch to process parts is slidably provided in the groove. A plurality of adjustment components are provided on both sides corresponding to the concave mold and the lower mold. A first spring is provided on each of the plurality of adjustment components. The first spring is used to provide a shock-absorbing elastic force between the concave mold and the lower mold. The adjustment component is used to adjust the magnitude of the elastic force of the first spring.

[0006] Preferably, both sides of the top wall of the lower mold are recessed downward to form installation grooves, and a plurality of corresponding spline grooves are formed at the bottom wall of the installation groove and on both sides of the top wall of the concave mold, and the spline grooves are used for the adjustment component to slide up and down.

[0007] Through the above structure, by sliding up and down in the spline groove, the adjustment component can flexibly adjust the elastic force of the first spring, so that the operator can easily adjust the preload force of the spring according to the processing requirements, thereby ensuring the best stamping effect and processing quality.

[0008] Preferably, the adjustment component includes a connecting piece which passes through the spline grooves of the lower mold and the die in sequence, a spline which cooperates with the spline groove is formed on the outer wall of the connecting piece, a limiting portion which cooperates with the bottom wall of the lower mold is formed on the bottom wall of the connecting piece, a connecting plate which is threadedly connected to the second fastener is provided on the top wall of the die, a pressing ring which slides along the outer wall of the connecting piece is provided on the top wall of the die, a through hole is formed inside the connecting piece along the length direction, a through internal threaded hole is formed on the bottom wall of the through hole, and a first fastener which threadedly cooperates with the internal threaded hole is rotatably provided on the pressing ring.

[0009] The outer wall of the connecting piece is formed with a spline that matches the spline groove, thereby ensuring that the connecting piece can slide stably in the spline grooves of the lower mold and the concave mold, while preventing the connecting piece from rotating.

[0010] Through the matching setting of the pressure ring, the pressure ring can slide up and down along the outer wall of the connecting piece, and through the first fastener, it is threadedly matched with the internal threaded hole inside the connecting piece, so that the operator can adjust the tightness of the first spring by adjusting the different positions of the pressure ring on the first fastener, thereby changing the clamping force of the pressure ring on the die, thereby achieving the adjustment of the elastic force of the first spring.

[0011] Preferably, an inwardly recessed thread groove is formed at the bottom wall of the first fastener, a through plug hole is formed at the bottom wall of the internal thread hole, and a second fastener threadably matched with the thread groove is rotatably provided in the plug hole.

[0012] Through the threaded setting of the first fastener and the second fastener, the user can adjust the elastic force of the first spring through the first fastener and the second fastener. In addition, the setting of the second fastener can not only adjust the elastic force of the first spring, but also improve the connection strength between the first fastener and the connecting piece, thereby ensuring the stability and accuracy of the mold adjustment component during the stamping process and improving the processing quality.

[0013] Preferably, the second fastener has a threaded portion threadedly matched with the internal threaded hole, the threaded portion has a diameter greater than the diameter of the second fastener, and a contact portion is formed at the bottom wall of the second fastener, the contact portion has a diameter greater than the diameter of the plug hole.

[0014] Through the above structure, the second fastener is always connected to the connecting member, thereby preventing the second fastener from being separated from the connecting member during disassembly.

[0015] Preferably, a third spring is rotatably provided at the top wall of the threaded portion, and the top of the third spring is rotatably provided at the bottom of the inner wall of the threaded groove.

[0016] Through the above structure, the connection stability between the threaded portion and the thread groove is preferably improved, and the compression and recovery capabilities of the third spring allow the required clamping force to be achieved more easily when adjusting the second fastener, thereby improving the accuracy and efficiency of adjustment.

[0017] Preferably, a plurality of through openings communicating with the through hole are formed on the outer wall of the connector, the pressure ring has a sliding disk cooperating with the inner wall of the through hole, an extension portion cooperating with the through opening is formed on the side wall of the sliding disk, and a clamping portion cooperating with the outer wall of the connector is provided on the extension portion.

[0018] Through the cooperation between the extension part and the through opening and the fitting between the clamping part and the outer wall of the connecting piece, the pressing ring can be firmly fixed on the connecting piece, thereby improving the stability of the mold during the stamping process and reducing the processing error caused by looseness.

[0019] Preferably, a second spring is provided at the bottom wall of the die and the bottom wall of the groove, and the second spring is used to provide a buffering elastic force between the die and the first spring.

[0020] Through the above structure, the necessary restoring force and buffering effect are provided during the stamping process, and the second spring serves as an additional buffer layer to further enhance the stability and durability of the mold.

[0021] Preferably, a recess for the punch is formed on the top wall of the die, and sliding grooves are formed on both sides of the recess. A pressure plate is slidably provided between the sliding grooves on both sides, and bolts for limiting the pressure plate are formed on the top wall of the pressure plate.

[0022] Through the above structure, the user can adjust the position of the pressing plate according to the needs of different parts, thereby achieving accurate positioning of the parts.

[0023] Preferably, a plurality of guide rods are formed on the top wall of the lower mold, and the plurality of guide rods are used for the upper mold to slide.

[0024] Through the above structure, the guide rod is used to guide the correct sliding of the upper die on the lower die. During the stamping process, the upper die needs to be accurately moved above the lower die and aligned with the concave die of the lower die to ensure the accuracy and stability of the stamping. The guide rod provides a guiding effect, reduces the friction and wear between the dies, and prevents the dislocation and offset of the dies.

[0025] The beneficial effects of the present invention are as follows: 1. By setting a concave die at the lower die to cooperate with the upper die, only the concave die needs to be replaced during replacement, making mold replacement more flexible and ensuring the stability of the mold during replacement; 2. By coordinating the setting of the adjustment component and the first spring, the length of the first spring can be adjusted to suit parts of different qualities, thereby ensuring the height of the parts and the accuracy of part processing. The spring in the equipment can be replaced without adjustment, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The figure is a schematic diagram of the overall structure of a stable replacement mechanism for a punching machine die.

[0027] Figure 2 The figure is a schematic diagram of the die structure of a punch die stable replacement mechanism.

[0028] Figure 3 The figure is a schematic diagram of the cross-sectional structure of the lower die of a punch die stable replacement mechanism.

[0029] Figure 4 The figure is a schematic diagram of the mounting groove structure of a punch die stable replacement mechanism.

[0030] Figure 5 The present invention is a schematic diagram of the cross-sectional structure of an adjustment component of a punch die stable replacement mechanism.

[0031] Figure 6 for Figure 5 Schematic diagram of the local enlarged structure at point A in the middle.

[0032] Figure 7 The diagram is a schematic diagram of the exploded structure of an adjustment component of a punch die stable replacement mechanism.

[0033] Figure 8 The figure is a schematic diagram of the cross-sectional structure of a connecting part of a punch die stable replacement mechanism.

[0034] 100, upper mold; 110, lower mold; 120, die; 130, first spring; 140, adjustment assembly; 210, guide rod; 220, slide groove; 230, pressure plate; 310, groove; 320, second spring; 410, mounting groove; 420, spline groove; 610, connector; 620, connector plate; 630, press ring; 640, first fastener; 650, threaded groove; 660, third spring; 670, second fastener; 720, through hole; 730, limit portion; 740, spline; 750, through port; 760, threaded portion; 770, contact portion; 810, internal threaded hole; 820, plug-in hole. DETAILED DESCRIPTION

[0035] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the embodiments. It should be understood that the embodiments are only for explaining the present invention and are not intended to limit it. Example

[0036] See also Figure 1-8 The present embodiment provides a punch press mold stable replacement mechanism, which includes an upper mold 100 and a lower mold 110 matched with the upper mold 100. A convex mold is formed at the bottom wall of the upper mold 100, and a groove 310 is formed inwardly at the corresponding top walls of the lower mold 110 and the upper mold 100. A concave mold 120 corresponding to the convex mold for processing parts is slidably provided in the groove 310. A plurality of adjustment components 140 are commonly provided at the corresponding sides of the concave mold 120 and the lower mold 110. The plurality of adjustment components 140 are all sleeved with a first spring 130. The first spring 130 is used to provide elastic force for shock absorption between the concave mold 120 and the lower mold 110. The adjustment component 140 is used to adjust the magnitude of the elastic force of the first spring 130.

[0037] The present invention discloses a stable replacement mechanism for a punching machine mold. The mechanism cooperates with the upper mold 100 through a concave mold 120 additionally provided at the lower mold 110. When replacing, only the concave mold 120 needs to be replaced. The mold replacement is more flexible and the stability of the mold during the replacement process is ensured.

[0038] In addition, with the setting of the adjustment component 140 and the first spring 130, the length of the first spring 130 can be adjusted to suit parts of different masses, thereby ensuring the height of the parts and the accuracy of part processing. The spring in the equipment does not need to be replaced when adjusted, thereby improving work efficiency.

[0039] In this embodiment, the top walls of the lower mold 110 are recessed downward to form installation grooves 410, and a plurality of corresponding spline grooves 420 are formed at the bottom wall of the installation groove 410 and on both sides of the top wall of the concave mold 120. The spline grooves 420 are used for the adjustment component 140 to slide up and down.

[0040] Through the above structure, by sliding up and down in the spline groove 420, the adjustment component 140 can flexibly adjust the elastic force of the first spring 130, so that the operator can easily adjust the preload force of the spring according to the processing requirements, thereby ensuring the best stamping effect and processing quality.

[0041] It is understandable that during the stamping process, the first spring 130 can absorb and disperse the impact force, while the spline groove 420 and the adjustment assembly 140 can ensure that the various parts of the mold are tightly connected and remain stable, which helps to reduce wear and damage of the mold and extend the service life of the mold.

[0042] In this embodiment, the adjustment component 140 includes a connecting piece 610 that passes through the spline groove 420 at the lower mold 110 and the die 120 in sequence, the outer wall of the connecting piece 610 is formed with a spline 740 that cooperates with the spline groove 420, and the bottom wall of the connecting piece 610 is formed with a limiting portion 730 that cooperates with the bottom wall of the lower mold 110. A connecting plate 620 threadedly connected to the second fastener 670 is provided at the top wall of the die 120, and a pressing ring 630 that slides along the outer wall of the connecting piece 610 is provided at the top wall of the die 120. A through hole 720 is formed inside the connecting piece 610 along the length direction, and a through internal threaded hole 810 is formed at the bottom wall of the through hole 720. A first fastener 640 threadedly engaged with the internal threaded hole 810 is rotatably provided at the pressing ring 630.

[0043] The spline 740 that cooperates with the spline groove 420 is formed on the outer wall of the connecting member 610, ensuring that the connecting member 610 can stably slide in the spline groove 420 of the lower mold 110 and the concave mold 120, while preventing the connecting member 610 from rotating.

[0044] Through the matching setting of the pressing ring 630, the pressing ring 630 can slide up and down along the outer wall of the connecting piece 610, and through the first fastener 640, it is threadedly matched with the internal threaded hole 810 inside the connecting piece 610, so that the operator can adjust the tightness of the first spring 130 by adjusting the different positions of the pressing ring 630 on the first fastener 640, thereby changing the clamping force of the pressing ring 630 on the die 120, thereby achieving the adjustment of the elastic force of the first spring 130.

[0045] It is understandable that by adjusting the cooperation between the pressure ring 630 and the first fastener 640 in the assembly 140, the operator can accurately adjust the elastic force of the first spring 130. This precise adjustment capability enables the mold to adapt to the processing requirements of parts of different weights, materials or shapes, thereby improving the accuracy and consistency of part processing.

[0046] In this embodiment, a thread groove 650 recessed inwardly is formed at the bottom wall of the first fastener 640, a through plug hole 820 is formed at the bottom wall of the internal thread hole 810, and a second fastener 670 threadably matched with the thread groove 650 is rotatably provided in the plug hole 820.

[0047] Through the threaded setting of the first fastener 640 and the second fastener 670, the user can adjust the elastic force of the first spring 130 through the first fastener 640 and the second fastener 670. In addition, the setting of the second fastener 670 can not only adjust the elastic force of the first spring 130, but also improve the connection strength between the first fastener 640 and the connecting member 610, thereby ensuring the stability and accuracy of the mold adjustment component 140 during the stamping process and improving the processing quality.

[0048] In this embodiment, the second fastener 670 has a threaded portion 760 that is threadedly matched with the internal threaded hole 810, and the diameter of the threaded portion 760 is larger than the diameter of the second fastener 670. A contact portion 770 is formed at the bottom wall of the second fastener 670, and the diameter of the contact portion 770 is larger than the diameter of the plug hole 820.

[0049] Through the above structure, the second fastener 670 is always connected to the connecting member 610, thereby preventing the second fastener 670 from being separated from the connecting member 610 during disassembly.

[0050] In this embodiment, a third spring 660 is rotatably provided at the top wall of the threaded portion 760 , and the top of the third spring 660 is rotatably provided at the bottom of the inner wall of the threaded groove 650 .

[0051] Through the above structure, the connection stability between the threaded portion 760 and the thread groove 650 is preferably improved. The compression and recovery capabilities of the third spring 660 allow the required clamping force to be achieved more easily when adjusting the second fastener 670, thereby improving the accuracy and efficiency of the adjustment.

[0052] In this embodiment, a plurality of through openings 750 connected to the through hole 720 are formed on the outer wall of the connecting member 610, and the pressure ring 630 has a sliding disk that cooperates with the inner wall of the through hole 720, and an extension portion that cooperates with the through opening 750 is formed on the side wall of the sliding disk, and a clamping portion that cooperates with the outer wall of the connecting member 610 is provided on the extension portion.

[0053] Through the cooperation between the extension part and the through-port 750 and the fit between the clamping part and the outer wall of the connector 610, the pressing ring 630 can be firmly fixed on the connector 610, thereby improving the stability of the mold during the stamping process and reducing the processing error caused by looseness.

[0054] In this embodiment, a second spring 320 is disposed at both the bottom wall of the female mold 120 and the bottom wall of the groove 310 . The second spring 320 is used to provide a buffering elastic force between the female mold 120 and the first spring 130 .

[0055] Through the above structure, the necessary restoring force and buffering effect are provided during the stamping process, and the second spring 320 serves as an additional buffer layer to further enhance the stability and durability of the mold.

[0056] In this embodiment, a recess for a punching die is formed on the top wall of the die 120, and sliding grooves 220 are formed on both sides of the recess. A pressure plate 230 is slidably provided between the sliding grooves 220 on both sides, and bolts for limiting the pressure plate 230 are formed on the top wall of the die 120.

[0057] Through the above structure, the user can adjust the position of the pressing plate 230 according to the needs of different parts, thereby achieving precise positioning of the parts.

[0058] In this embodiment, a plurality of guide rods 210 are formed on the top wall of the lower mold 110 , and the plurality of guide rods 210 are used for the upper mold 100 to slide.

[0059] Through the above structure, the guide rod 210 is used to guide the upper mold 100 to slide correctly on the lower mold 110. During the stamping process, the upper mold 100 needs to be accurately moved above the lower mold 110 and aligned with the concave mold 120 of the lower mold 110 to ensure the accuracy and stability of the stamping. The guide rod 210 provides a guiding effect, reduces the friction and wear between the molds, and prevents the dislocation and deviation of the molds.

[0060] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on one or several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.

[0061] The present invention and its implementation methods are described schematically above, and the description is not restrictive. The embodiments shown in the embodiments are only part of the implementation methods of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the embodiments and designs a structure and an implementation method similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the protection scope of the present invention.

Claims

1. A punch press die stable replacement mechanism, characterized in that: The invention comprises an upper mold (100) and a lower mold (110) matched with the upper mold (100), wherein a convex mold is formed at the bottom wall of the upper mold (100), and a groove (310) is formed by inward depression at the corresponding top walls of the lower mold (110) and the upper mold (100), wherein a concave mold (120) corresponding to the convex mold for processing parts is slidably provided in the groove (310), and a plurality of adjustment components (140) are provided at the corresponding sides of the concave mold (120) and the lower mold (110), and a first spring (130) is sleeved on each of the plurality of adjustment components (140), and the first spring (130) is used to provide elastic force for shock absorption between the concave mold (120) and the lower mold (110), and the adjustment component (140) is used to adjust the magnitude of the elastic force of the first spring (130).

2. A punch press die stable replacement mechanism according to claim 1, characterized in that: Both sides of the top wall of the lower mold (110) are recessed downward to form a mounting groove (410), and a plurality of corresponding spline grooves (420) are formed at the bottom wall of the mounting groove (410) and both sides of the top wall of the concave mold (120), and the spline grooves (420) are used for the adjustment component (140) to slide up and down.

3. A punch press die stable replacement mechanism according to claim 2, characterized in that: The adjustment component (140) comprises a connecting piece (610) which passes through the spline groove (420) at the lower mold (110) and the concave mold (120) in sequence; a spline (740) which cooperates with the spline groove (420) is formed on the outer wall of the connecting piece (610); a limiting portion (730) which cooperates with the bottom wall of the lower mold (110) is formed on the bottom wall of the connecting piece (610); a connecting plate (620) which is threadedly connected to a second fastener (670) is provided on the top wall of the concave mold (120); a pressing ring (630) which slides along the outer wall of the connecting piece (610) is provided on the top wall of the concave mold (120); a through hole (720) is formed inside the connecting piece (610) along the length direction; a through internal threaded hole (810) is formed on the bottom wall of the through hole (720); and a first fastener (640) which is threadedly engaged with the internal threaded hole (810) is rotatably provided on the pressing ring (630).

4. A punch press die stable replacement mechanism according to claim 3, characterized in that: An inwardly recessed thread groove (650) is formed at the bottom wall of the first fastener (640), a through insertion hole (820) is formed at the bottom wall of the internal thread hole (810), and a second fastener (670) threadably matched with the thread groove (650) is rotatably disposed in the insertion hole (820).

5. A punch press die stable replacement mechanism according to claim 4, characterized in that: The second fastener (670) has a threaded portion (760) threadably matched with the internal threaded hole (810), the threaded portion (760) having a diameter greater than the diameter of the second fastener (670), and a contact portion (770) is formed at the bottom wall of the second fastener (670), the contact portion (770) having a diameter greater than the diameter of the plug hole (820).

6. A punch press die stable replacement mechanism according to claim 5, characterized in that: A third spring (660) is rotatably provided at the top wall of the threaded portion (760), and the top of the third spring (660) is rotatably provided at the bottom of the inner wall of the threaded groove (650).

7. A punch press die stable replacement mechanism according to claim 3, characterized in that: A plurality of through openings (750) communicating with the through hole (720) are formed on the outer wall of the connecting piece (610), the pressing ring (630) has a sliding disk cooperating with the inner wall of the through hole (720), an extension portion cooperating with the through opening (750) is formed on the side wall of the sliding disk, and a pressing portion cooperating with the outer wall of the connecting piece (610) is provided on the extension portion.

8. The punch press die stable replacement mechanism according to claim 1, characterized in that: A second spring (320) is provided at the bottom wall of the concave mold (120) and the bottom wall of the groove (310), and the second spring (320) is used to provide a buffering elastic force between the concave mold (120) and the first spring (130).

9. A punch press die stable replacement mechanism according to claim 1, characterized in that: A concave portion for a punching die is formed at the top wall of the concave die (120), and slide grooves (220) are formed at both sides of the concave portion of the top wall of the concave die (120). A pressing plate (230) is slidably provided between the slide grooves (220) on both sides, and bolts for limiting the pressing plate (230) are formed at the top wall of the pressing plate (230).

10. A punch press die stable replacement mechanism according to claim 1, characterized in that: A plurality of guide rods (210) are formed on the top wall of the lower mold (110), and the plurality of guide rods (210) are used for the upper mold (100) to slide.

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