Bending machine for aluminum alloy door and window production

Abstract

The utility model relates to the technical field of bending machines, and discloses a bending machine for aluminum alloy door and window production, which comprises a rectangular frame, a hydraulic cylinder, a first rectangular die holder, an upper die, a first bolt, a second rectangular die holder, a lower die and a second bolt. In the using process, after the upper die is inserted into the first notch, the first bolts on the two sides are screwed, the first bolts on the two sides can press or loosen the upper die through the interaction between threads, and therefore the upper die can be conveniently mounted and dismounted. And after the lower die is inserted into the second notch, the second bolts on the two sides are screwed, and the second bolts on the two sides can press or loosen the upper die through the interaction between threads, so that the lower die is convenient to mount and dismount. And moreover, the first bolt and the upper die as well as the second bolt and the lower die only abut against each other and are not connected, so that the acting force generated in the plate bending process can be transmitted to the first rectangular film seat and the second rectangular film seat, the first bolt and the second bolt are prevented from being damaged, and the fault hidden danger is eliminated.

Description

Technical Field

[0001] The present application relates to the technical field of bending machines, for example, to a bending machine for producing aluminum alloy doors and windows. Background Art

[0002] The related technology (publication number: CN219025500U) discloses an aluminum alloy sheet bending device for the production of aluminum alloy doors and windows, which relates to the technical field of aluminum alloy doors and windows, and includes a bending box. Support legs are fixedly installed on both sides of the bottom of the bending box. An inner cavity is fixedly installed inside the bending box. A storage frame is movably installed inside the inner cavity. Several partitions are fixedly installed inside the storage frame. A mold assembly is fixedly installed on the top of the bending box. The aluminum alloy sheet bending device for the production of aluminum alloy doors and windows is embedded in the first mounting cavity through the first mounting plate, so that the mold is easy to install and disassemble, so that the mold of the corresponding curvature can be replaced according to the bending curvature required by the aluminum alloy sheet. The second mounting plate is embedded in the second mounting cavity, so that the bending head is easy to install and disassemble, so that the bending head of the corresponding curvature can be replaced according to the bending curvature required by the aluminum alloy sheet. Therefore, the above-mentioned setting meets the bending of various curvatures of aluminum alloy sheets and improves the practicality of the device.

[0003] In the process of implementing the above embodiments, it is found that there are at least the following problems in the related art:

[0004] The mold assembly is installed and fixed by connecting the first bolt to the first mounting plate; the bending assembly is installed and fixed by the second bolt and the second mounting plate, so as to facilitate the installation and disassembly of the mold assembly and the bending assembly. However, when the first bolt is directly connected to the first mounting plate and the second bolt is directly connected to the second mounting plate, the force generated during the bending process of the plate will be directly transmitted to the first bolt and the second bolt, causing damage to the first bolt and the second bolt, which poses a potential malfunction.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0006] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0007] The disclosed embodiment provides a bending machine for producing aluminum alloy doors and windows to eliminate potential fault hazards.

[0008] In some embodiments, a bending machine for producing aluminum alloy doors and windows includes: a rectangular frame; a hydraulic cylinder, installed on the top wall of the rectangular frame along the height direction of the rectangular frame; a first rectangular die base, connected to the moving end of the hydraulic cylinder and located inside the rectangular frame, the first rectangular die base including a first notch located on its bottom wall; an upper die, inserted in the first notch, along the width direction of the rectangular frame, the upper die includes first protrusions located on both sides thereof, the first protrusions on both sides are located between the bottom wall and the top wall of the first rectangular die base; a first bolt, threadedly connected to the bottom of the first rectangular die base wall, and respectively abut against the first protrusions on both sides; a second rectangular mold base, located inside the rectangular frame and connected to the bottom wall of the rectangular frame, the second rectangular mold base includes a second notch located on its top wall; a lower mold, inserted in the second notch, along the width direction of the rectangular frame, the lower mold includes second protrusions located on both sides thereof, the second protrusions on both sides are located between the top wall and the bottom wall of the second rectangular mold base; a second bolt, threadedly connected to the top wall of the second rectangular mold base, and respectively abut against the second protrusions on both sides; wherein, under the drive of the hydraulic cylinder, the upper mold can abut against the lower mold.

[0009] Optionally, it also includes: a first spring, which is located on both sides of the upper mold along the width direction of the rectangular frame and is located inside the first rectangular mold base, and one end of the first spring on both sides is connected to the inner wall of the first rectangular mold base; a first pressure plate, which is respectively connected to the other end of the first spring on both sides and is respectively abutted against the first protrusions on both sides; wherein, under the elastic force of the first springs on both sides, the upper mold is clamped between the first pressure plates on both sides.

[0010] Optionally, it also includes: a first optical axis, which can be slidably penetrated through the side wall of the first rectangular mold base along the width direction of the rectangular frame, and is located on both sides of the upper mold, and the first optical axes on both sides are respectively connected to the first pressure plates on both sides; wherein the first springs on both sides are respectively mounted on the first optical axes on both sides.

[0011] Optionally, it also includes: first linear bearings, which are respectively mounted on the first optical axes on both sides and are both installed on the side walls of the first rectangular mold base.

[0012] Optionally, it also includes: second springs, which are located on both sides of the lower mold along the width direction of the rectangular frame and are both located inside the second rectangular mold base, and one end of the second springs on both sides is connected to the inner wall of the second rectangular mold base; second pressure plates, which are respectively connected to the other ends of the second springs on both sides and respectively abut against the second protrusions on both sides; wherein, under the elastic force of the second springs on both sides, the lower mold is clamped between the second pressure plates on both sides.

[0013] Optionally, it also includes: a second optical axis, which can be slidably penetrated through the side wall of the second rectangular mold base along the width direction of the rectangular frame, and is located on both sides of the lower mold, and the second optical axes on both sides are respectively connected to the second pressure plates on both sides; wherein the second springs on both sides are respectively mounted on the second optical axes on both sides.

[0014] Optionally, it also includes: second linear bearings, which are respectively mounted on the second optical axes on both sides and are installed on the side walls of the second rectangular mold base.

[0015] Optionally, it further includes: a third optical axis, which is slidably disposed on the top wall of the rectangular frame along the height direction of the rectangular frame and is connected to the first rectangular mold base.

[0016] Optionally, it also includes: a third linear bearing, which is sleeved on the third optical axis and installed on the top wall of the rectangular frame.

[0017] The bending machine for aluminum alloy door and window production provided in the embodiment of the present disclosure can achieve the following technical effects:

[0018] A bending machine for producing aluminum alloy doors and windows provided in an embodiment of the present disclosure includes a rectangular frame, a hydraulic cylinder, a first rectangular die base, an upper die, a first bolt, a second rectangular die base, a lower die, and a second bolt. The hydraulic cylinder is installed on the top wall of the rectangular frame along the height direction of the rectangular frame to provide a driving force. The first rectangular die base is connected to the moving end of the hydraulic cylinder and is located inside the rectangular frame. Driven by the hydraulic cylinder, it moves in the direction of the bottom wall of the rectangular frame. The first rectangular die base includes a first notch located on its bottom wall, and the first notch accommodates the installation of the upper die. The upper die is inserted at the first notch, and along the width direction of the rectangular frame, the upper film includes a first protrusion located on both sides thereof, and the first protrusions on both sides are located between the bottom wall and the top wall of the first rectangular die base, and are used to fix the upper die. The first bolt is threadedly connected to the bottom wall of the first rectangular die base, and is respectively abutted against the first protrusions on both sides, and is used to tighten or loosen the first protrusions on both sides. The second rectangular mold base is located inside the rectangular frame and connected to the bottom wall of the rectangular frame. The second rectangular mold base includes a second notch located on its top wall, and the second notch is used to accommodate and install the lower mold. The lower mold is inserted in the second notch. Along the width direction of the rectangular frame, the lower film includes second protrusions located on both sides thereof. The second protrusions on both sides are located between the top wall and the bottom wall of the second rectangular mold base, and are used to fix the lower mold. The second bolt is threadedly connected to the top wall of the second rectangular mold base, and is respectively abutted against the second protrusions on both sides, and is used to tighten or loosen the second protrusions on both sides. Wherein, under the drive of the hydraulic cylinder, the upper mold can abut against the lower mold so as to be able to bend the plate between the upper mold and the lower mold.

[0019] During use, after the upper mold is inserted into the first notch, the first bolts on both sides are screwed. Through the interaction between the threads, the first bolts on both sides can press or loosen the upper mold, thereby facilitating the installation and removal of the upper mold. After the lower mold is inserted into the second notch, the second bolts on both sides are screwed. Through the interaction between the threads, the second bolts on both sides can press or loosen the upper mold, thereby facilitating the installation and removal of the lower mold. In addition, since the first bolt and the upper mold, and the second bolt and the lower mold are only abutted but not connected, the force generated during the bending process of the sheet will be transmitted to the first rectangular membrane seat and the second rectangular membrane seat. It will not act on the first bolt and the second bolt, thereby avoiding damage to the first bolt and the second bolt, eliminating the hidden danger of failure.

[0020] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0022] Figure 1 It is a schematic cross-sectional structure diagram of a bending machine for producing aluminum alloy doors and windows provided in an embodiment of the present disclosure;

[0023] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 3 yes Figure 1 A schematic diagram of the enlarged structure at B in the middle;

[0025] Figure 4 It is a schematic diagram of the main structure of a bending machine for producing aluminum alloy doors and windows provided in an embodiment of the present disclosure.

[0026] Reference numerals:

[0027] 1: rectangular frame; 2: hydraulic cylinder; 3: first rectangular die base; 4: upper die; 5: first bolt; 6: second rectangular die base; 7: lower die; 8: second bolt; 9: first spring; 10: first pressure plate; 11: first optical axis; 12: first linear bearing; 13: second spring; 14: second pressure plate; 15: second optical axis; 16: second linear bearing; 17: third optical axis; 18: third linear bearing. DETAILED DESCRIPTION

[0028] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0029] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0030] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0031] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0032] Unless otherwise stated, the term "plurality" means two or more.

[0033] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0034] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0035] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0036] Combination Figures 1 to 4 As shown, the embodiment of the present disclosure provides a bending machine for producing aluminum alloy doors and windows, including a rectangular frame 1, a hydraulic cylinder 2, a first rectangular die base 3, an upper die 4, a first bolt 5, a second rectangular die base 6, a lower die 7 and a second bolt 8. The hydraulic cylinder 2 is installed on the top wall of the rectangular frame 1 along the height direction of the rectangular frame 1 to provide a driving force. The first rectangular die base 3 is connected to the moving end of the hydraulic cylinder 2 and is located inside the rectangular frame 1. Under the drive of the hydraulic cylinder 2, it moves in the direction of the bottom wall of the rectangular frame 1. The first rectangular die base 3 includes a first notch located on its bottom wall, and the first notch accommodates and installs the upper die 4. The upper die 4 is inserted at the first notch. Along the width direction of the rectangular frame 1, the upper die includes a first protrusion located on both sides thereof, and the first protrusions on both sides are located between the bottom wall and the top wall of the first rectangular die base 3, and are used to fix the upper die 4. The first bolt 5 is threadedly connected to the bottom wall of the first rectangular die base 3, and is respectively abutted against the first protrusions on both sides, and is used to press or loosen the first protrusions on both sides. The second rectangular die base 6 is located inside the rectangular frame 1 and connected to the bottom wall of the rectangular frame 1. The second rectangular die base 6 includes a second notch located on its top wall, and the second notch is used to accommodate and install the lower die 7. The lower die 7 is inserted in the second notch. Along the width direction of the rectangular frame 1, the lower die includes second protrusions located on both sides thereof. The second protrusions on both sides are located between the top wall and the bottom wall of the second rectangular die base 6, and are used to fix the lower die 7. The second bolt 8 is threadedly connected to the top wall of the second rectangular die base 6, and is respectively abutted against the second protrusions on both sides, and is used to tighten or loosen the second protrusions on both sides. Among them, under the drive of the hydraulic cylinder 2, the upper die 4 can abut against the lower die 7, so as to be able to bend the plate between the upper die 4 and the lower die 7.

[0037] A bending machine for aluminum alloy door and window production provided by the embodiment of the present disclosure includes a rectangular frame 1, a hydraulic cylinder 2, a first rectangular die seat 3, an upper die 4, a first bolt 5, a second rectangular die seat 6, a lower die 7 and a second bolt 8. During use, after the upper die 4 is inserted into the interior of the first notch, the first bolts 5 on both sides are screwed, and the first bolts 5 on both sides can be pressed or loosened by the interaction between the threads, so as to facilitate the installation and removal of the upper die 4. After the lower die 7 is inserted into the interior of the second notch, the second bolts 8 on both sides are screwed, and the second bolts 8 on both sides can be pressed or loosened by the interaction between the threads, so as to facilitate the installation and removal of the lower die 7. In addition, since the first bolt 5 and the upper die 4, and the second bolt 8 and the lower die 7 are only abutted but not connected, the force generated during the bending process of the plate will be transmitted to the first rectangular film seat and the second rectangular film seat. It will not act on the first bolt 5 and the second bolt 8, thereby avoiding damage to the first bolt 5 and the second bolt 8, eliminating the hidden danger of failure.

[0038] Optionally, combined Figure 1 , Figure 2 and Figure 4 As shown, the upper mold 4 also includes a first spring 9 and a first pressing plate 10. The first springs 9 are located on both sides of the upper mold 4 along the width direction of the rectangular frame 1, and are both located inside the first rectangular mold base 3. One end of the first springs 9 on both sides is connected to the inner wall of the first rectangular mold base 3. The first pressing plate 10 is respectively connected to the other end of the first springs 9 on both sides, and respectively abuts against the first protrusions on both sides. Under the elastic force of the first springs 9 on both sides, the upper mold 4 is clamped between the first pressing plates 10 on both sides.

[0039] In the disclosed embodiment, a first spring 9 and a first pressing plate 10 are also included. The first spring 9 is used to provide elastic force, and the first pressing plate 10 is used to abut against the upper mold 4. During the installation of the upper mold 4, under the elastic force of the first springs 9 on both sides, the first pressing plates 10 on both sides can clamp and position the upper mold 4. Thus, the upper mold 4 is located in the middle position of the first rectangular mold base 3, ensuring the position accuracy of the upper mold 4.

[0040] Optionally, combined Figure 1 , Figure 2 and Figure 4 As shown, it also includes a first optical axis 11. The first optical axis 11 is slidably arranged in the side wall of the first rectangular mold base 3 along the width direction of the rectangular frame 1, and is located on both sides of the upper mold 4. The first optical axes 11 on both sides are respectively connected to the first pressing plates 10 on both sides. Among them, the first springs 9 on both sides are respectively mounted on the first optical axes 11 on both sides.

[0041] In the disclosed embodiment, the first optical axis 11 is also included, which is connected to the first pressing plates 10 on both sides. The first optical axis 11 on both sides can be slidably penetrated through the side wall of the first rectangular mold base 3, and are used to play the role of guide support, so as to improve the stability of the first pressing plates 10 on both sides when moving, and make the first springs 9 on both sides only compressed. In addition, the design of the first springs 9 on both sides being respectively sleeved on the first optical axis 11 on both sides can prevent the first springs 9 on both sides from falling off from the first pressing plates 10 on both sides and the first rectangular mold base 3.

[0042] Optionally, combined Figure 1 , Figure 2 and Figure 4 As shown, the first linear bearing 12 is also included. The first linear bearings 12 are respectively mounted on the first optical axes 11 on both sides and are both installed on the side walls of the first rectangular mold base 3.

[0043] In the disclosed embodiment, first linear bearings 12 are also included, which are respectively mounted on the first optical axes 11 on both sides and are installed on the side walls of the first rectangular mold base 3. The first linear bearings 12 on both sides are used to reduce the friction between the first optical axes 11 on both sides and the first rectangular film base, and to improve the accuracy of the first optical axes 11 on both sides when they move relative to the first rectangular film base.

[0044] Optionally, combined Figure 1 , Figure 3 and Figure 4 As shown, the lower mold 7 also includes a second spring 13 and a second pressing plate 14. The second springs 13 are located on both sides of the lower mold 7 along the width direction of the rectangular frame 1, and are both located inside the second rectangular mold base 6. One end of the second springs 13 on both sides is connected to the inner wall of the second rectangular mold base 6. The second pressing plates 14 are respectively connected to the other ends of the second springs 13 on both sides, and are respectively against the second protrusions on both sides. Under the elastic force of the second springs 13 on both sides, the lower mold 7 is clamped between the second pressing plates 14 on both sides.

[0045] In the disclosed embodiment, a second spring 13 and a second pressing plate 14 are also included. The second spring 13 is used to provide elastic force, and the second pressing plate 14 is used to abut against the lower die 7. During the installation of the lower die 7, under the elastic force of the second springs 13 on both sides, the second pressing plates 14 on both sides can clamp and position the lower die 7. Thus, the lower die 7 is located in the middle of the second rectangular die base 6, ensuring the position accuracy of the lower die 7.

[0046] Optionally, combined Figure 1 , Figure 3 and Figure 4As shown, the second optical axis 15 is also included. The second optical axis 15 is slidably arranged on the side wall of the second rectangular mold base 6 along the width direction of the rectangular frame 1, and is located on both sides of the lower mold 7. The second optical axes 15 on both sides are respectively connected to the second pressing plates 14 on both sides. The second springs 13 on both sides are respectively sleeved on the second optical axes 15 on both sides.

[0047] In the disclosed embodiment, the second optical axis 15 is also included, which is connected to the second pressing plates 14 on both sides. The second optical axis 15 on both sides can be slidably penetrated through the side wall of the second rectangular mold base 6, and are used to play the role of guide support, so as to improve the stability of the second pressing plates 14 on both sides when moving, and make the second springs 13 on both sides only compressed. In addition, the design of the second springs 13 on both sides being respectively sleeved on the second optical axis 15 on both sides can prevent the second springs 13 on both sides from falling off from between the second pressing plates 14 on both sides and the second rectangular mold base 6.

[0048] Optionally, combined Figure 1 , Figure 3 and Figure 4 As shown, the second linear bearing 16 is also included. The second linear bearings 16 are respectively mounted on the second optical axes 15 on both sides and are both installed on the side walls of the second rectangular mold base 6.

[0049] In the disclosed embodiment, second linear bearings 16 are also included, which are respectively mounted on the second optical axes 15 on both sides and are installed on the side walls of the second rectangular mold base 6. The second linear bearings 16 on both sides are used to reduce the friction between the second optical axes 15 on both sides and the second rectangular film base, and to improve the accuracy of the second optical axes 15 on both sides when they move relative to the second rectangular film base.

[0050] Optionally, combined Figure 1 and Figure 4 As shown, the third optical axis 17 is also included. The third optical axis 17 is slidably disposed on the top wall of the rectangular frame 1 along the height direction of the rectangular frame 1 and is connected to the first rectangular mold base 3.

[0051] In the disclosed embodiment, a third optical axis 17 is also included which is slidably disposed on the top wall of the rectangular frame 1 and connected to the first rectangular mold base 3. The third optical axis 17 is used to act as a guide support to improve the stability of the first rectangular film base when it moves and reduce the radial force on the moving end of the hydraulic cylinder 2.

[0052] Optionally, combined Figure 1 and Figure 4 As shown, the third linear bearing 18 is also included. The third linear bearing 18 is sleeved on the third optical axis 17 and installed on the top wall of the rectangular frame 1.

[0053] In the disclosed embodiment, a third linear bearing 18 is also included which is sleeved on the third optical axis 17 and mounted on the top wall of the rectangular frame 1. The third linear bearing 18 is used to reduce the friction between the third optical axis 17 and the rectangular frame 1 and to improve the accuracy of the third optical axis 17 when it moves relative to the rectangular frame 1.

[0054] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A bending machine for aluminum alloy door and window production, characterized in that: include: Rectangular frame; A hydraulic cylinder is installed on the top wall of the rectangular frame along the height direction of the rectangular frame; A first rectangular mold base, connected to the movable end of the hydraulic cylinder and located inside the rectangular frame, wherein the first rectangular mold base includes a first notch located on a bottom wall thereof; An upper mold is inserted in the first notch, and along the width direction of the rectangular frame, the upper mold includes first protrusions located on both sides thereof, and the first protrusions on both sides are located between the bottom wall and the top wall of the first rectangular mold base; A first bolt, threadedly connected to the bottom wall of the first rectangular mold base, and respectively abutting against the first protrusions on both sides; A second rectangular mold base is located inside the rectangular frame and connected to the bottom wall of the rectangular frame, and the second rectangular mold base includes a second notch located on the top wall thereof; A lower mold is inserted in the second notch, and along the width direction of the rectangular frame, the lower mold includes second protrusions located on both sides thereof, and the second protrusions on both sides are located between the top wall and the bottom wall of the second rectangular mold base; A second bolt is threadedly connected to the top wall of the second rectangular mold base and respectively abuts against the second protrusions on both sides; Wherein, under the drive of the hydraulic cylinder, the upper die can be against the lower die.

2. A bending machine for aluminum alloy door and window production according to claim 1, characterized in that: Also includes: First springs, located on both sides of the upper mold along the width direction of the rectangular frame, and both located inside the first rectangular mold base, and one end of the first springs on both sides are connected to the inner wall of the first rectangular mold base; A first pressing plate, connected to the other end of the first springs on both sides, and respectively abutting against the first protrusions on both sides; Wherein, under the elastic force of the first springs on both sides, the upper mold is clamped between the first pressing plates on both sides.

3. A bending machine for aluminum alloy door and window production according to claim 2, characterized in that: Also includes: A first optical axis is slidably disposed on the side wall of the first rectangular mold base along the width direction of the rectangular frame and is located on both sides of the upper mold, and the first optical axes on both sides are respectively connected to the first pressing plates on both sides; Wherein, the first springs on both sides are respectively mounted on the first optical axes on both sides.

4. A bending machine for aluminum alloy door and window production according to claim 3, characterized in that: Also includes: The first linear bearings are respectively mounted on the first optical axes at both sides and are installed on the side walls of the first rectangular mold base.

5. The bending machine for producing aluminum alloy doors and windows according to claim 1, characterized in that: Also includes: Second springs are located on both sides of the lower mold along the width direction of the rectangular frame and are both located inside the second rectangular mold base, and one end of the second springs on both sides is connected to the inner wall of the second rectangular mold base; A second pressing plate, connected to the other end of the second springs on both sides, and respectively abutting against the second protrusions on both sides; Wherein, under the elastic force of the second springs on both sides, the lower mold is clamped between the second pressing plates on both sides.

6. A bending machine for aluminum alloy door and window production according to claim 5, characterized in that: Also includes: The second optical axis is slidably disposed on the side wall of the second rectangular mold base along the width direction of the rectangular frame and is located on both sides of the lower mold, and the second optical axes on both sides are respectively connected to the second pressing plates on both sides; Wherein, the second springs on both sides are respectively mounted on the second optical axes on both sides.

7. A bending machine for aluminum alloy door and window production according to claim 6, characterized in that: Also includes: The second linear bearings are respectively mounted on the second optical axes at both sides and are installed on the side walls of the second rectangular mold base.

8. A bending machine for producing aluminum alloy doors and windows according to any one of claims 1 to 7, characterized in that: Also includes: The third optical axis is slidably disposed on the top wall of the rectangular frame along the height direction of the rectangular frame and is connected to the first rectangular mold base.

9. A bending machine for producing aluminum alloy doors and windows according to claim 8, characterized in that: Also includes: The third linear bearing is sleeved on the third optical axis and installed on the top wall of the rectangular frame.

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