An integrated aluminum alloy multi-point fixed-length stamping die with replaceable punching knives

Abstract

The present invention relates to an integrated aluminum alloy multi-point fixed-length stamping die with a replaceable punching knife, comprising an upper template, a lower template, a punching knife and a perforated plate, a die hole is arranged on the perforated plate, and the lower template is provided with a positioning fixture for fixing the profile; the punching knife comprises a mounting slide block and a knife body, the mounting slide block is matched in the mounting slide groove and fixed by a fixing block; the positioning fixture comprises two positioning guide rails, which are connected to the lower template through a supporting fixing frame, and a positioning clamp is matched in each positioning guide rail; the limiting guide groove is provided with a scale and a positioning hole along its length direction; the positioning clamp comprises a clamp seat, a guide column, a clamp body, a shock-absorbing spring and a positioning bolt, the clamp body is provided with a clamp protrusion, the clamp protrusion extends upward from the mounting slot to limit the profile, and the positioning is realized by the positioning bolt and the positioning connection hole threadedly matched and tightened. The present invention can realize multi-point positioning processing, improve work efficiency, and realize multi-punching with one mold.

Description

Technical Field

[0001] The invention relates to the technical field of punching and stamping dies, and in particular to an integrated aluminum alloy multi-point fixed-length stamping die with replaceable punching knives. Background Art

[0002] With the development of the door and window industry and technological progress, aluminum alloy profiles have changed from milling to punching, which has improved processing efficiency and dimensional stability.

[0003] However, the current aluminum alloy punching molds are single and one mold can only process the punching of the corresponding profile. It cannot be universal. Different profiles require different molds for punching, which increases the mold cost. At the same time, the increase in molds causes mold management to occupy more workshop area, and before changing the mold, it is necessary to search and transfer the mold, etc., which wastes a lot of time and the process is cumbersome.

[0004] In addition, most of the aluminum alloy punching dies on the market are unable to achieve multi-point positioning. Multi-point positioning of profiles relies on manual marking on the profiles. Each profile workpiece needs to be marked, which is a large workload, seriously wastes production time, and makes the processing efficiency extremely low. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings and defects of the prior art and provide an integrated aluminum alloy multi-point fixed-length stamping die with replaceable punching knives.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] An integrated aluminum alloy multi-point fixed-length stamping die with a replaceable punching knife, comprising an upper die plate and a lower die plate, wherein the upper die plate is detachably connected to the punching knife, the lower die plate is detachably connected to a perforated plate, the perforated plate is provided with die holes corresponding to the punching knife, a guide shaft is provided between the upper die plate and the lower die plate, an auxiliary spring is sleeved on the guide shaft; the upper die plate is connected to a punching device, and the lower die plate is provided with a positioning fixture for fixing a profile;

[0008] The punching knife comprises a mounting slide block and a knife body, the upper template is provided with a horizontal mounting slide groove, the mounting slide block is matched in the mounting slide groove, a fixing block for fixing the mounting slide block in a limited position is provided at the end of the mounting slide groove, the fixing block is detachably connected to the upper template, and the knife body is arranged downwardly corresponding to the die hole;

[0009] The positioning fixture comprises two positioning rails distributed on both sides of the orifice plate, the positioning rails are connected to the lower template through a supporting fixing frame, and each positioning rail is provided with a positioning card;

[0010] The top of the positioning guide rail is provided with a limiting guide groove which is open upwards, the limiting guide groove is provided with scales along its length direction, and the side of the positioning guide rail is provided with positioning holes along the length direction of the positioning guide rail;

[0011] The positioning card includes a card seat, and the card seat is adapted to the limiting guide groove. The top of the card seat is provided with an upwardly opening mounting card slot, and the bottom of the mounting card slot is vertically upward and detachably connected to the guide column, and the guide column is sleeved with a card body, and the card body is provided with a card protrusion, and the card protrusion extends upward from the mounting card slot to limit the profile, and a shock-absorbing spring sleeved on the guide column is provided below the card body, and a positioning connection hole is provided on the side of the card seat corresponding to the positioning hole, and the positioning connection hole is matched with the positioning bolt, and the positioning is achieved by the threaded connection part of the positioning bolt passing through the positioning hole and threadedly matching and fastening with the positioning connection hole.

[0012] Preferably, the guide shaft is connected to the lower template by fixing bolts, the upper template is provided with a guide hole matching the guide shaft, and a guide sleeve matching the guide shaft is fixed to the bottom end of the guide hole by connecting bolts.

[0013] Preferably, the fixing block is provided with an end head, and the end head cooperates in the installation slide groove to limit the installation slide block.

[0014] Preferably, the support fixing frame and the positioning guide rail ends are both provided with corresponding connecting fixing holes, the lower template and its connecting end surface are provided with threaded connecting holes corresponding to the fixing holes, and the support fixing frame and the positioning guide rail are connected to the lower template by bolts.

[0015] Preferably, the supporting fixing frame is L-shaped, including a horizontal supporting part and a vertical connecting part. The horizontal supporting part is connected and fixed to the lower template to provide support for the positioning guide rail, and the vertical connecting part is connected to the positioning guide rail through connecting fixing holes and matching bolts; the orifice plate, the vertical connecting part and the upper surface of the positioning guide rail are flush.

[0016] Preferably, a travel limit pile is provided between the upper template and the lower template, and the travel limit pile is fixed on the lower template.

[0017] Preferably, the guide column includes a stop portion provided at the bottom end of the guide body, a step hole provided at the bottom of the clamp seat, the guide body passes through the step hole from bottom to top, so that the stop portion is stuck in the step hole, a limiting bolt is provided and threadedly connected to the step hole to limit the guide column close to the stop portion, and the hole close to the outer side of the step hole is cooperatively set as a threaded hole.

[0018] Preferably, the upper template is connected to the stamping equipment via a connecting member; and the lower template is provided with a punching waste groove that cooperates with a punching knife.

[0019] Preferably, the orifice plate is provided with more than two die holes, including a first die hole and a second die hole, and the same orifice plate corresponds to more than two punches.

[0020] Preferably, the fixing block is connected to the upper template by a first bolt, the front side of the upper template is provided with a first threaded hole for matching connection, and the fixing block is provided with a matching first fixing hole. The orifice plate is connected to the lower template by a second bolt, the lower template is provided with a second threaded hole for matching connection, and the orifice plate is provided with a matching second fixing hole.

[0021] Preferably, the guide shaft is connected to the lower template via a third bolt, and the guide sleeve is connected to the upper template via a fourth bolt.

[0022] Beneficial effects: The present invention can realize multi-point positioning processing of profile stamping and punching, thereby improving work efficiency; it is convenient to replace molds and tool heads, and can realize multiple punching with one mold, thus saving mold costs and reducing the waste of site resources on molds. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG1 is a schematic diagram of the overall assembly three-dimensional structure of the present invention;

[0024] Figure 2 It is a schematic front view of the whole of the present invention;

[0025] Figure 3 It is a schematic diagram of the assembly of the upper template and the lower template;

[0026] Figure 4 It is a schematic diagram of the structure of the punch;

[0027] Figure 5 It is a schematic diagram of the orifice plate structure;

[0028] Figure 6 This is a schematic diagram of punch installation;

[0029] Figure 7 This is the installation diagram of the positioning card Figure 1 ;

[0030] Figure 8 This is the installation diagram of the positioning card Figure 2 ;

[0031] Fig. 9 This is a schematic diagram of the installation of positioning cards and positioning rails;

[0032] Fig.10 It is the installation diagram of the orifice plate;

[0033] Fig.11 This is a schematic diagram of the positioning guide rail with its own scale;

[0034] In the figure, the upper template 1, the first threaded hole 1.1, the mounting slide groove 1.2, the lower template 2, the punching waste groove 2.1, the second bolt 2.2, the auxiliary spring 3, the connecting member 4, the orifice plate 5, the first die hole 5.1, the second die hole 5.2, the second fixing hole 5.3, the punching knife 6, the mounting slide block 6.1, the knife body 6.2, the fixing block 7, the first bolt 7.1, the support fixing frame 8, the threaded connection hole 8.1, the positioning guide rail 9, the positioning hole 9.1, the connecting fixing hole 9.2, the positioning bolt 9.3, the positioning clamp 10, the clamp seat 10.1, the clamp protrusion 10.2, the shock absorbing spring 10.3, the guide column 10.4, the positioning connection hole 10.5, the step hole 10.6, the limit bolt 10.7, the slide hole 10.8, the travel limit pile 11, the guide sleeve 12, the fourth bolt 12.1, the guide shaft 13, and the third bolt 13.1. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings.

[0036] Figure 1 and Figure 2 An integrated aluminum alloy multi-point fixed-length stamping die with a replaceable punching knife 6 is presented, comprising an upper template 1 and a lower template 2, wherein the upper template 1 is detachably connected to the punching knife 6, and the lower template 2 is detachably connected to a perforated plate 5, wherein the perforated plate 5 is provided with die holes corresponding to the punching knife 6, and a guide shaft 13 is provided between the upper template 1 and the lower template 2, wherein an auxiliary spring 3 is sleeved on the guide shaft 13, and the auxiliary spring 3 has the functions of shock absorption and auxiliary tool withdrawal; the upper template 1 is connected to the stamping equipment, and the lower template 2 is provided with a positioning fixture for fixing the profile;

[0037] The punching knife 6 comprises a mounting slide 6.1 and a knife body 6.2. Figure 4 As shown, the upper template 1 is provided with a horizontal installation slot 1.2, the installation slide block 6.1 is matched in the installation slot 1.2, and a fixing block 7 for fixing the installation slide block 6.1 with a limited position is provided at the end of the installation slot 1.2, and the fixing block 7 is detachably connected to the upper template 1, and the knife body 6.2 is arranged downwardly corresponding to the die hole;

[0038] The positioning fixture includes two positioning rails 9 distributed on both sides of the orifice plate 5, and the positioning rails 9 are connected to the lower template 2 through a supporting bracket 8. A positioning clamp 10 is provided in each positioning rail 9;

[0039] The top of the positioning guide rail 9 is provided with a limit guide groove which is open upwards, and the limit guide groove is provided with scales along its length direction, such as Fig.11As shown, the side of the positioning guide rail 9 is provided with positioning holes 9.1 along the length direction of the positioning guide rail 9;

[0040] The positioning card 10 includes a card seat 10.1, the card seat 10.1 is adapted to the limiting guide groove, the top of the card seat 10.1 is provided with an upwardly opening mounting card slot, the bottom of the mounting card slot is vertically upwardly detachably connected to a guide column 10.4, the guide column 10.4 is sleeved with a card body, the card body is provided with a sliding hole 10.8 that matches the guide column 10.4, the card body is provided with a card protrusion 10.2, the card protrusion 10.2 extends upwardly from the mounting card slot to limit the profile, and a shock-absorbing spring 10.3 is provided on the guide column 10.4 at the bottom of the card body, and a positioning connection hole 10.5 is provided on the side of the card seat 10.1 corresponding to the positioning hole 9.1, and the positioning connection hole 10.5 is matched with the positioning bolt 9.3, and the threaded connection part of the positioning bolt 9.3 passes through the positioning hole 9.1 and is threadedly fastened with the positioning connection hole 10.5 to achieve positioning;

[0041] Specifically, Figure 3 As shown, the fixing block 7 is connected to the upper template 1 via a first bolt 7.1, the front side of the upper template 1 is provided with a first threaded hole 1.1 for matching connection, and the fixing block 7 is provided with a matching first fixing hole.

[0042] like Fig. 9 As shown, the orifice plate 5 is connected to the lower template 2 via a second bolt 2.2, the lower template 2 is provided with a second threaded hole for matching connection, and the orifice plate 5 is provided with a second fixing hole 5.3 for matching connection.

[0043] As another preferred embodiment, Figure 2 and Figure 3 As shown, the upper template 1 is provided with a guide hole for matching the guide shaft 13, and a guide sleeve 12 for matching the guide shaft 13 is fixed to the bottom end of the guide hole by a connecting bolt, and the guide sleeve 12 is used to improve the guiding stability, reduce the punching deviation, and improve the punching accuracy. The guide shaft 13 is connected to the lower template 2 by a third bolt 13.1, and the guide sleeve 12 is connected to the upper template 1 by a fourth bolt 12.1.

[0044] As another preferred embodiment, Figure 6 As shown, the fixed block 7 is provided with an end head, and the end head cooperates with the installation slot 1.2 to limit the installation slide block 6.1. The remaining degrees of freedom of the end head in the installation slot 1.2 will be restricted, and then only the last degree of freedom is limited by the first bolt 7.1, thereby enhancing the connection strength, making the punching knife 6 more stable, reducing the shaking of the punching knife 6, and improving the punching accuracy.

[0045] As another preferred embodiment, the ends of the supporting fixing frame 8 and the positioning guide rail 9 are both provided with corresponding connecting fixing holes 9.2, and the lower template 2 and its connecting end surface are provided with threaded connecting holes 8.1 corresponding to the fixing holes, and the supporting fixing frame 8 and the positioning guide rail 9 are connected to the lower template 2 by bolts.

[0046] like Figure 1 and Figure 2 As shown, the supporting and fixing frame 8 is L-shaped, including a horizontal supporting portion and a vertical connecting portion. The horizontal supporting portion is connected and fixed to the lower template 2, and is mainly used to provide support for the positioning guide rail 9. The vertical connecting portion is connected to the positioning guide rail 9 through the connecting and fixing holes 9.2 with bolts, and is mainly used to connect the positioning guide rail 9 and the supporting and fixing frame 8 to achieve the fixation of the positioning guide rail 9, thereby completing the support and fixation of the profile workpiece; the orifice plate 5, the vertical connecting portion and the upper surface of the positioning guide rail 9 are flush to ensure the level of the profile workpiece fixing table.

[0047] As another preferred embodiment, Figure 2 As shown, a travel limit pile 11 is provided between the upper template 1 and the lower template 2. The travel limit pile 11 is fixed on the lower template 2. The travel limit pile 11 can be a bolt, which is threadedly connected with the lower template 2.

[0048] As another preferred embodiment, Figure 7 and Figure 8 As shown, the guide column 10.4 includes a stop portion provided at the bottom end of the guide body, a step hole 10.6 is provided at the bottom of the clamp seat 10.1, and the guide body passes through the step hole 10.6 from bottom to top, so that the stop portion is stuck in the step hole 10.6, and a limit bolt 10.7 is provided to be threadedly connected with the step hole 10.6 and close to the stop portion to limit the guide column 10.4, and the hole close to the outer side of the step hole 10.6 is cooperatively set as a threaded hole.

[0049] Figure 7 and Figure 8 During installation, first insert the clamping protrusion 10.2 into the clamping seat 10.1, then put the shock-absorbing spring 10.3 on the guide column 10.4, place it between the clamping protrusion 10.2 and the bottom of the clamping seat 10.1, align it with the sliding hole 10.8, and then insert the guide column 10.4 from the bottom of the clamping seat 10.1 through the step hole 10.6. The guide column 10.4 must pass through the shock-absorbing spring 10.3 and fit with the axis of the sliding hole 10.8. Finally, connect and tighten it with the limit bolt 10.7. The step hole 10.6 includes a large hole on the outside and a small hole on the inside. The large hole is provided with a thread, and the small hole on the inside is not threaded. When connected, the upper part of the guide column 10.4 passes through the small hole, and the stopper is stuck at the small hole. Then, the guide column 10.4 and the positioning clamp 10 are installed and fixed as a whole by tightening with the limit bolt 10.7.

[0050] like Fig. 9 As shown, when installing and connecting, first slide the positioning clamp 10 into the positioning guide rail 9, and then pass the positioning bolt 9.3 through the positioning hole 9.1 and connect it with the positioning connection hole 10.5;

[0051] When positioning, slide the positioning fixture 10 to the positioning point, tighten the positioning bolt 9.3, and tightly fix the positioning fixture 10 and the positioning guide rail 9 to achieve positioning; according to needs, multiple positioning fixtures 10 can be slid into the positioning guide rail 9 to achieve multi-point positioning;

[0052] Combination Figures 7 to 9 The specific method of realizing multi-point positioning is as follows: the positioning clamp 10 is fixed at the specified position, the first positioning point of the profile is directly clamped on the clamp protrusion 10.2 of the first positioning clamp 10, and when positioning the second point, the profile is directly pressed on the first clamp protrusion 10.2, and the clamp protrusion 10.2 moves downward due to the action of the shock-absorbing spring 10.3, and one end of the profile is clamped at the clamp protrusion 10.2 of the second positioning point to realize the second point positioning; the third and fourth positioning points are similar. After the profile is punched, the protrusion of the positioning clamp 10 automatically returns to its original position under the action of the shock-absorbing spring 10.3. The role of the shock-absorbing spring 10.3 is also reflected in the punching, which can play a shock-absorbing role.

[0053] As another preferred embodiment, the upper template 1 is connected to the punching equipment via a connecting member 4 ; the lower template 2 is provided with a punching waste groove 2 . 1 that cooperates with the punching knife 6 .

[0054] As another preferred embodiment, Figure 1 , Figure 5 and Fig.10 As shown, the orifice plate 5 is provided with more than two die holes, including a first die hole 5.1 and a second die hole 5.2, and the same orifice plate 5 corresponds to more than two punches 6; the mold can be replaced by replacing only the punch 6 without replacing the orifice plate 5.

[0055] In summary, the present invention can realize multi-point positioning processing of profile stamping and punching, thereby improving work efficiency; it is convenient to replace molds and tool heads, and can realize multiple punching with one mold, saving mold costs and reducing the waste of site resources on molds.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An integrated aluminum alloy multi-point fixed-length stamping die with a replaceable punch, comprising an upper template and a lower template, wherein the upper template is detachably connected to the punch, and the lower template is detachably connected to a perforated plate, wherein the perforated plate is provided with die holes corresponding to the punch, and a guide shaft is provided between the upper template and the lower template, and an auxiliary spring is sleeved on the guide shaft; the upper template is connected to a stamping device, and the lower template is provided with a positioning fixture for fixing a profile; It is characterized in that The punching knife comprises a mounting slide block and a knife body, the upper template is provided with a horizontal mounting slide groove, the mounting slide block is matched in the mounting slide groove, a fixing block for fixing the mounting slide block in a limited position is provided at the end of the mounting slide groove, the fixing block is detachably connected to the upper template, and the knife body is arranged downwardly corresponding to the die hole; The positioning fixture comprises two positioning rails distributed on both sides of the orifice plate, the positioning rails are connected to the lower template through a supporting fixing frame, and each positioning rail is provided with a positioning card; The top of the positioning guide rail is provided with a limiting guide groove which is open upwards, the limiting guide groove is provided with scales along its length direction, and the side of the positioning guide rail is provided with positioning holes along the length direction of the positioning guide rail; The positioning card comprises a card seat, the card seat is adapted to the limiting guide slot, the top of the card seat is provided with an upwardly opening mounting card slot, the bottom of the mounting card slot is vertically upwardly detachably connected to the guide column, the guide column is sleeved with a card body, the card body is provided with a card protrusion, the card protrusion extends upward from the mounting card slot to limit the profile, a shock-absorbing spring sleeved on the guide column is provided below the card body, and a positioning connection hole is provided on the side of the card seat corresponding to the positioning hole, the positioning connection hole is matched with a positioning bolt, and the threaded connection part of the positioning bolt passes through the positioning hole and is threadedly matched with the positioning connection hole to achieve positioning; The support fixing frame is L-shaped and includes a horizontal support portion and a vertical connection portion. The horizontal support portion is connected and fixed to the lower template to provide support for the positioning guide rail. The vertical connection portion is connected to the positioning guide rail through a connection fixing hole and a matching bolt. The orifice plate, the vertical connection portion and the upper surface of the positioning guide rail are flush. A travel limit pile is arranged between the upper template and the lower template, and the travel limit pile is fixed on the lower template.

2. The one-piece aluminum alloy multi-point fixed-length stamping die with replaceable punching blades as claimed in claim 1, characterized in that: The guide shaft is connected to the lower template by fixing bolts, the upper template is provided with a guide hole matching the guide shaft, and a guide sleeve matching the guide shaft is fixed to the bottom end of the guide hole by connecting bolts.

3. The one-piece aluminum alloy multi-point fixed-length stamping die with replaceable punching blades as claimed in claim 1, characterized in that: The fixing block is provided with an end head, and the end head cooperates in the installation slide groove to limit the installation slide block.

4. The one-piece aluminum alloy multi-point fixed-length stamping die with replaceable punching blades as claimed in claim 1, characterized in that: The support fixing frame and the positioning guide rail end portions are both provided with corresponding connection fixing holes, the lower template and its connecting end surface are provided with threaded connection holes corresponding to the fixing holes, and the support fixing frame and the positioning guide rail are connected to the lower template by bolts.

5. The one-piece aluminum alloy multi-point fixed-length stamping die with replaceable punching blades as claimed in claim 1, characterized in that: The guide column includes a stop portion provided at the bottom end of the bottom of the guide body, a step hole provided at the bottom of the clamp seat, the guide body passes through the step hole from bottom to top, so that the stop portion is stuck in the step hole, a limiting bolt is provided and threadedly connected to the step hole to limit the guide column close to the stop portion, and the hole close to the outer side of the step hole is cooperatively set as a threaded hole.

6. The one-piece aluminum alloy multi-point fixed-length stamping die with replaceable punching blades as claimed in claim 1, characterized in that: The upper template is connected to the punching equipment through a connecting member; the lower template is provided with a punching waste groove that cooperates with the punching knife.

7. The one-piece aluminum alloy multi-point fixed-length stamping die with replaceable punching blades as claimed in claim 1, characterized in that: The orifice plate is provided with more than two die holes, including a first die hole and a second die hole, and one orifice plate corresponds to more than two punches.

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