Rapid remodeling structure of composite punching die and independent heating lamp box

Abstract

The utility model discloses a rapid remodeling structure of a composite punching die and an independent heating lamp box, which comprises a punching die and a heating lamp box, and the punching die comprises an upper die and a lower die; the heating lamp box comprises a rack and a lamp box body, two guide rail frames are arranged on the two sides of the upper portion of the rack in parallel, and the lamp box body is installed on the guide rail frames through a sliding mechanism and can move in the direction towards or away from the punching die. The adjustable trundles are arranged at the lower part of the rack and are used for adjusting the height of the heating lamp box; the plurality of locking and fixing ground feet are arranged at the lower part of the rack and are used for fixing the position of the heating lamp box; the two guide block parts are arranged on the two sides of the lower mold respectively, and the guide ends of the two guide block parts face the heating lamp box; the two guide hole parts are arranged at the ends, close to the punching die, of the two guide rail frames correspondingly and matched with the guide block parts on the two sides of the lower die correspondingly. According to the utility model, the rapid and accurate butt joint of the heating lamp box and the punching die can be realized, and the locking is stable by matching with the bolt.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile interior part processing, and particularly relates to a rapid die change structure for a composite punching die and an independent heating light box. Background Technique

[0002] In the existing automobile production process, it is often necessary to compound an injection-molded skeleton and a tufted suede fabric together to form a soft appearance surface. At present, this compounding process relies on a punching die and an infrared heating light box. By placing the injection-molded skeleton and the tufted suede fabric on the upper die and the lower die of the punching die respectively, and using the infrared heating light box to extend into the opening and closing space of the punching die to heat and bake the injection-molded skeleton and the tufted suede fabric. After baking, the infrared heating light box withdraws, and the product completes compounding, punching, and edge cutting work in the punching die.

[0003] The existing punching die connects its own die slot with the T-slot of the equipment table through a hydraulic clamp. Since the T-slot of the equipment table is transparent from front to back and has a large gap with the die slot, each time the die is changed, the position of the die on the equipment table will change in the front, back, left, right, and horizontal plane rotation positions. Therefore, in order to ensure that the heating light box and the punching die are in the same relative position, the front ends of the guide rail frames at both ends of the existing heating light box extend into both sides of the punching die, and are connected with the fixed plates on both sides of the punching die by positioning with pins 200 and fastening with screws 100 (as Figure 1 、 2 shown). It takes at least about 30 minutes to disassemble and assemble it once, which is time-consuming and laborious, and its accuracy cannot be guaranteed. At the same time, since the heating light box often only inserts the front end into both sides of the punching die, and the rest of the support points are on the ground outside the equipment table, and the flatness of the workshop floor cannot reach the flatness of the relative position with the equipment table, it is very difficult to maintain the same distance. It cannot meet the requirement that the distance between each heating tube of the heating light box and the injection-molded skeleton is kept the same, and uniform heating cannot be achieved. Therefore, there is an urgent need for a rapid die change structure for a composite punching die and an independent heating light box. Content of the Utility Model

[0004] Aiming at the deficiencies existing in the prior art, the utility model provides a rapid die change structure for a composite punching die and an independent heating light box.

[0005] The utility model discloses a rapid die change structure for a composite punching die and an independent heating light box, which includes a punching die and a heating light box. The punching die includes an upper die and a lower die that are combined up and down. The heating light box includes a frame and a light box main body. Two guide rail frames are arranged in parallel on both sides of the upper part of the frame. The light box main body is installed on the guide rail frames through a sliding mechanism and can move in a direction towards or away from the punching die. Its characteristics are that it also includes:

[0006] A plurality of adjustable casters, which are arranged at the lower part of the frame and are used to adjust the height of the heating lamp box;

[0007] A plurality of locking and fixing floor feet, which are arranged at the lower part of the frame and are used to fix the position of the heating lamp box;

[0008] Two guiding block parts, which are respectively arranged on both sides of the lower die, and the guiding ends thereof both face the heating lamp box;

[0009] Two guiding hole parts, which are respectively arranged at one end of the two guide rail frames close to the punching die, and are respectively matched with the guiding block parts on both sides of the lower die.

[0010] As a further improvement of the utility model, the frame is of a rectangular frame structure, and a plurality of the adjustable casters and a plurality of the locking and fixing floor feet are installed at the bottom of the frame;

[0011] Two guide rail frames are arranged in parallel on both sides of the top of the frame, both of the two guide rail frames extend along the length direction of the frame, and one end of both of the two guide rail frames close to the punching die extends beyond the frame by a certain distance to form an insertion part for inserting both sides of the lower die.

[0012] As a further improvement of the utility model, the number of the adjustable casters is four, each of the adjustable casters includes a caster part and an adjusting rod part fixed on the caster part, a first adjusting hole is arranged on one side of the adjusting rod part, and the first adjusting hole is a round hole;

[0013] The adjusting rod parts of the four adjustable casters are respectively sleeved in the corresponding four vertical frames of the frame in a liftable manner, at least one second adjusting hole is arranged on the side surface of each vertical frame corresponding to the adjusting rod part, the second adjusting hole is a special-shaped hole extending along the vertical direction, and an adjusting screw sequentially passes through the second adjusting hole and the first adjusting hole.

[0014] As a further improvement of the utility model, the number of the locking and fixing floor feet is four, each of the locking and fixing floor feet includes a floor foot part and a clamp;

[0015] The four clamps are symmetrically arranged in pairs on both sides of the bottom of the frame, the four clamps are all arranged along the vertical direction, and the floor foot parts are installed at the bottoms of the telescopic ends of the four clamps.

[0016] As a further improvement of the utility model, the guiding block part includes a guiding block in a conical shape and a positioning block in a rectangular shape; the two positioning blocks are respectively installed on both sides of the lower die through mounting plates, and one end of the two positioning blocks close to the heating lamp box is integrally connected with the guiding block, and the guiding block is used for inserting into the guiding hole part, and the positioning block is provided with a first pin hole in the vertical direction;

[0017] The end faces of the two positioning blocks at one end close to the heating lamp box form a die side positioning surface.

[0018] As a further improvement of the utility model, the guiding hole part includes a guiding hole matched with the guiding block; the guiding hole is formed by being recessed inward from one end of the guide rail frame close to the punching die, and a horizontal plate is further installed above the corresponding guiding hole at the end of the guide rail frame, and the horizontal plate is provided with a second pin hole matched with the first pin hole;

[0019] The end faces of both sides of the guide rail frame at one end close to the punching die constitute a lamp box side positioning surface matched with the die side positioning surface.

[0020] As a further improvement of the utility model, when both sides of the guide rail frame are inserted into both sides of the lower die, the guiding blocks on both sides of the lower die are inserted into the guiding holes at the front ends of the corresponding guide rail frames, and the die side positioning surface is attached to the lamp box side positioning surface, and the first adjusting hole and the second adjusting hole are aligned in the vertical direction; the pin sequentially passes through the second adjusting hole and the first adjusting hole from top to bottom.

[0021] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0022] The utility model has a simple structure and is convenient to operate. By arranging the guiding block part on both sides of the lower die and arranging the guiding hole part at the front ends of the guide rail frames on both sides of the heating lamp box, the rapid and accurate docking of the heating lamp box and the punching die can be realized, and the cooperation with the pin for locking is firm. Compared with the prior art of pin positioning and screw fastening, the time for die change connection is shortened, and it can ensure that the lamp box and the punching die always maintain a relatively parallel and perpendicular position, improving the accuracy.

[0023] By arranging a plurality of adjustable casters and locking and fixing floor feet at the bottom of the frame of the heating lamp box, the utility model can make the heating lamp box, the punching die and the equipment tabletop always maintain a relative horizontal plane and perpendicularity, realize the adjustment of the height of the heating lamp box to reduce the influence of the floor flatness of the workshop, and at the same time, the position of the heating lamp box can be locked to avoid displacement during the heating process, resulting in heating failure, further ensuring that the distance between each heating lamp tube on the lamp box body and the injection molding skeleton is consistent, and realizing the uniform heating temperature. Description of the Drawings

[0024] Figure 1 Side view of the butt joint between the blanking die of the prior art and the heating light box;

[0025] Figure 2 Top view of the butt joint between the blanking die of the prior art and the heating light box;

[0026] Figure 3 Schematic structural diagram of the quick-change structure of the composite blanking die and the independent heating light box disclosed in an embodiment of the present invention;

[0027] Figure 4 Butt joint schematic diagram of the quick-change structure of the composite blanking die and the independent heating light box disclosed in an embodiment of the present invention;

[0028] Figure 5 Schematic structural diagram of the heating light box of the quick-change structure of the composite blanking die and the independent heating light box disclosed in an embodiment of the present invention;

[0029] Figure 6 For Figure 5 Enlarged view of part A;

[0030] Figure 7 Schematic structural diagram of the adjustable caster of the quick-change structure of the composite blanking die and the independent heating light box disclosed in an embodiment of the present invention;

[0031] Figure 8 Schematic structural diagram of the second and first adjustment holes of the quick-change structure of the composite blanking die and the independent heating light box disclosed in an embodiment of the present invention;

[0032] Figure 9 Schematic structural diagram of the locking and fixing floor feet of the quick-change structure of the composite blanking die and the independent heating light box disclosed in an embodiment of the present invention;

[0033] Figure 10 Side view of the butt joint between the guide block part and the guide hole part of the quick-change structure of the composite blanking die and the independent heating light box disclosed in an embodiment of the present invention;

[0034] Figure 11 Top view of the butt joint between the guide block part and the guide hole part of the quick-change structure of the composite blanking die and the independent heating light box disclosed in an embodiment of the present invention.

[0035] In the figure:

[0036] 100, screw; 200, pin;

[0037] 1. Lower die; 2. Heating light box; 21. Frame; 211. Vertical frame; 2111. Second adjustment hole; 22. Light box body; 23. Guide rail frame; 24. Running motor; 25. Heating lamp tube; 3. Adjustable casters; 31. Caster part; 32. Adjusting rod part; 321. First adjustment hole; 4. Locking and fixing floor feet; 41. Floor foot part; 42. Clamping device; 5. Guide block part; 51. Positioning block; 511. First pin hole; 512. Die side positioning surface; 52. Guide block; 6. Guide hole part; 61. Connecting plate; 611. Light box side positioning surface; 62. Guide hole; 63. Horizontal plate; 64. Second pin hole; 7. Insertion part; 8. Mounting plate; 9. Pin. Detailed implementation mode

[0038] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0039] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0040] In the description of the present utility model, it should also be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0041] The following further describes the present utility model in detail with reference to the accompanying drawings:

[0042] As Figures 3 - 5As shown in the figure, a rapid die change structure for a composite punching die and an independent heating light box according to the present utility model includes a punching die, a heating light box 2, a plurality of adjustable casters 3, a plurality of locking and fixing floor feet 4, two guide block parts 5 and two guide hole parts 6. Among them, the punching die includes an upper die and a lower die 1 that are closed up and down; the heating light box 2 includes a frame 21 and a light box main body 22. Two guide rail frames 23 are arranged in parallel on both sides of the upper part of the frame 21. The light box main body 22 is installed on the guide rail frames 23 through a sliding mechanism and can move in the direction towards or away from the punching die, so that the light box main body 22 can enter between the upper die and the lower die 1 to heat the injection molded skeleton and the tufted suede fabric; a plurality of adjustable casters 3 and a plurality of locking and fixing floor feet 4 are respectively arranged at the lower part of the frame 2, and a plurality of adjustable casters 3 are used to adjust the height of the heating light box, and a plurality of locking and fixing floor feet 4 are used to fix the position of the heating light box 2; one guide block part 5 is respectively arranged on both sides of the lower die 1, and the guiding end of the guide block part 5 faces the heating light box 2; one guide hole part 6 is respectively arranged at one end of the two guide rail frames 23 close to the punching die, and the guide hole parts 6 on both sides are respectively matched with the guide block parts 5 on the corresponding sides of the lower die 1 to realize the precise docking of the heating light box 2 and the punching die.

[0043] In this embodiment, by arranging the guide block parts 5 on both sides of the lower die 1 and arranging the guide hole parts at the front ends of the two guide rail frames on both sides of the heating light box 2, the rapid and precise docking of the heating light box 2 and the punching die can be realized, and it is locked and stabilized by matching with the pin 9. Compared with the existing method of positioning with the pin 200 and fastening with the screw 100, the die change connection time is shortened, and it can ensure that the light box and the punching die always remain in a relatively parallel and perpendicular position, improving the accuracy; by arranging a plurality of adjustable casters 3 and locking and fixing floor feet 4 at the bottom of the frame of the heating light box 2, the heating light box 2, the punching die and the equipment tabletop can always be kept in a relative horizontal plane and perpendicularity, and the height of the heating light box 2 can be adjusted to reduce the influence of the floor flatness of the workshop. At the same time, the position of the heating light box 2 can also be locked to prevent it from shifting during the heating process, resulting in heating failure, and further ensuring that the distance between each heating lamp tube 25 on the light box main body 22 and the injection molded skeleton is consistent, realizing uniform heating temperature. <-

[0044] Specifically:

[0045] As Figure 5 shown, in the above embodiment, preferably, the frame 21 is a rectangular frame structure, and a plurality of adjustable casters 3 and a plurality of locking and fixing floor feet 4 are installed at the bottom of the frame 21; two guide rail frames 23 are arranged in parallel on the left and right sides of the top of the frame 21, and both of the two guide rail frames 23 extend along the length direction of the frame 21, and one end of both of the two guide rail frames 23 close to the punching die extends beyond the frame 21 by a certain distance to form an insertion part 7 for inserting into both sides of the lower die 1.

[0046] In the above embodiment, preferably, the sliding mechanism includes a mounting plate, a running guide rail, a rack, a gear, and a running motor 24; wherein, the two running guide rails are respectively laid on the corresponding guide rail frames 23, the bottoms of the two mounting plates are slidably mounted on the corresponding running guide rails, and racks are mounted on the inner sides of the bottoms of the two mounting plates; the running motor 24 is placed on the upper part of the frame 21, the output shaft of the running motor 24 is connected to a transmission shaft, the transmission shaft is arranged perpendicular to the laying direction of the guide rail frame 23, and gears meshing with the corresponding racks on both sides are provided at both ends of the transmission shaft; the lamp box main body 22 is fixedly mounted on the two mounting plates through a vertical bracket, and heating lamp tubes 25 conforming to the shape are arranged on the upper and lower parts of the lamp box main body 22.

[0047] In the above embodiment, preferably, the laying directions of the mounting plate and the rack are the same as those of the running guide rail and the guide rail frame 23.

[0048] As Figures 7 - 8 shown, in the above embodiment, preferably, the number of adjustable casters 3 is four, and the four adjustable casters 3 are respectively arranged at the bottoms of the four vertical frames 211 of the frame 21. Each adjustable caster 3 includes a caster part 31 and an adjusting rod part 32. The adjusting rod part 32 is installed on the bottom plate in the vertical direction, the caster part 31 is installed at the bottom of the bottom plate, a first adjusting hole 321 is provided on one side of the adjusting rod part 32, and the first adjusting hole 321 is a circular hole; at least one second adjusting hole 2111 is provided on the side surface of each vertical frame 211 corresponding to the adjusting rod part 32, and the second adjusting hole 2111 is a special-shaped hole extending in the vertical direction. In this embodiment, two first adjusting holes 321 are installed at intervals in the vertical direction on one side of the adjusting rod part 32, and two second adjusting holes 2111 cooperating with the first adjusting holes 321 are installed at intervals in the vertical direction on the side surface of the vertical frame 211, and the adjusting screw 33 passes through the second adjusting hole 2111 and the first adjusting hole 321 in sequence.

[0049] During specific adjustment, through the four adjustable casters 3, the heating lamp box 2 can be pushed to the docking position of the lower die 1 of the punching die. By loosening the upper and lower adjusting screws 33, the insertion depth of the adjusting rod parts 32 of the four adjustable casters 3 in the four vertical frames 211 can be adjusted up and down, so that the heating lamp box 2 reaches the same horizontal plane as the punching die and is aligned with the front docking position, ensuring smooth entry and exit of the guide block part 5 and the guide hole part 6, and then inserting the bolt 9 to lock it.

[0050] As Figure 9As shown, in the above embodiment, preferably, the number of the locking and fixing feet 4 is four, and each locking and fixing foot 4 includes a ground foot portion 41 and a clamp 42; wherein, the four clamps 42 are symmetrically installed in pairs on both sides of the bottom of the machine frame 1 in a direction perpendicular to the guide rail frame 23, and the four clamps 42 are all arranged in the vertical direction, and the ground foot portions 41 are installed at the bottoms of the telescopic ends of the four clamps 42.

[0051] During specific adjustment, when the height adjustment of the heating lamp box 2 is completed, the heights of the four ground foot portions 41 are adjusted through the four clamps 42 so that the heating lamp box 2 can be fixed to prevent the heating lamp box 2 from moving, and the height of the heating lamp box 2 is fixedly locked; when the heating lamp box 2 needs to be changed after completing the heating work, the four ground foot portions 41 can be retracted through the four clamps 42 so as to push away the heating lamp box 2. The model of the clamp 42 in this embodiment is CH-30513.

[0052] As Figure 6 、 Figures 10 - 11 As shown, in the above embodiment, preferably, the guide hole portion 6 includes a connecting plate 61. One connecting plate 61 is installed at each end of the two guide rail frames 23 close to the punching die. The middle of the connecting plate 61 is concave inward toward the guide rail frame 23 to form a guide hole 62. A horizontal plate 63 is installed above the connecting plate 61 corresponding to the upper part of the guide hole 62. A second pin hole 64 is provided on the horizontal plate 63 in the vertical direction; the end faces of the two connecting plates 61 constitute a lamp box side positioning surface 611.

[0053] In the above embodiment, preferably, the guide block portion 5 includes a conical guide block 52 and a rectangular positioning block 51. Among them, the two positioning blocks 51 are respectively installed on both sides of the lower die 1 through the mounting plates 8. One end of the two positioning blocks 51 close to the heating lamp box 2 is integrally connected with a guide block 52. The guide block 52 is used to be inserted into the corresponding guide hole 62. The positioning block 51 is provided with a first pin hole 511 in the vertical direction for cooperating with the second pin hole 64. The end faces of one ends of the two positioning blocks 51 close to the heating lamp box 2 form a die side positioning surface 512 for cooperating with the lamp box side positioning surface 611.

[0054] In the above embodiment, preferably, the cross section of the mounting plate 8 is L-shaped, and the two mounting plates 8 are symmetrically arranged on both sides of the lower die to form a mounting portion for mounting the positioning block 51.

[0055] During specific docking, when the guide rail frames 23 on both sides are inserted into both sides of the lower die 1, the guide blocks 52 located on both sides of the lower die 1 are inserted into the guide holes 62 at the front ends of the corresponding guide rail frames 23, and the die-side positioning surface 512 is in contact with the light box-side positioning surface 611. The first adjustment hole 321 and the second adjustment hole 2111 are aligned vertically. The pin 9 passes through the second adjustment hole 2111 and the first adjustment hole 321 from top to bottom in sequence to achieve the guiding docking and locking of the heating light box 2 and the punching die.

[0056] In the above embodiment, preferably, when the light box-side positioning surface 611 at the front ends of the guide rail frames 23 on both sides approaches the die-side positioning surface 512 to a position of 80 mm, it enters the conical guide and is pushed forward along it until the die-side positioning surface 512 and the light box-side positioning surface 611 are completely flat. Then, the pin 9 is inserted to lock the heating light box 2 to complete the docking.

[0057] In the above embodiment, preferably, since there is one piece of the product to be processed on each of the left and right sides, the punching die in this embodiment can be divided into two sets of dies according to the product, including a left die and a right die. Among them, the single-piece weight of the left die and the right die is not greater than 3.5 T, which greatly reduces the weight of the die and can meet the handling requirements of the forklift.

[0058] The usage method of this embodiment:

[0059] 1. Push the heating light box 2 near the punching die through the four adjustable casters 3, and insert the front ends of the guide rail frames 23 on both sides of the heating light box 2 into both sides of the lower die 1.

[0060] 2. Adjust the heights of the four adjustable casters 3 to insert the guide block parts 5 located on both sides of the lower die 1 into the guide hole parts 6 at the front ends of the guide rail frames 23 on both sides, and lock the guide block parts 5 and the guide hole parts 6 with the pin 9, so that the heating light box 2, the punching die, and the equipment tabletop are always kept in relative horizontal planes and perpendicularity.

[0061] 3. After completing the docking, lock the position of the heating light box 2 through the four locking and fixing floor bolts 4 to prevent it from moving.

[0062] 4. Start the running motor 24 to make the light box main body 22 slide between the upper die and the lower die 1, and heat the injection molding skeleton and the tufted suede fabric. After heating is completed, the light box main body 22 withdraws from the punching die.

[0063] 5. The upper die and the lower die 1 are closed to complete the compounding work of the injection molding skeleton and the tufted suede fabric.

[0064] In the above embodiment, preferably, during subsequent model change, only need to lift the four locking and fixing floor bolts 4 and pull out the pin 9.

[0065] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A rapid die-changing structure for a composite punching die and an independently heated light box, comprising a punching die and a heated light box. The punching die includes an upper die and a lower die that are closed together. The heated light box includes a frame and a light box body. On both sides of the upper part of the frame, two guide rail frames are arranged in parallel. The light box body is installed on the guide rail frames through a sliding mechanism and can move in a direction towards or away from the punching die. It is characterized in that, It further includes: A plurality of adjustable casters, which are arranged at the lower part of the frame and are used to adjust the height of the heating lamp box; A plurality of locking and fixing floor feet, which are arranged at the lower part of the frame and are used to fix the position of the heating lamp box; Two guiding block parts, which are respectively arranged on both sides of the lower die, and their guiding ends all face the heating lamp box; Two guiding hole parts, which are respectively arranged at one end of the two guide rails close to the punching die, and are respectively matched with the guiding block parts on both sides of the lower die.

2. The quick-change structure according to claim 1, characterized in that, The frame is a rectangular frame structure, and a plurality of the adjustable casters and a plurality of the locking and fixing floor feet are installed at the bottom of the frame; Two guide rails are arranged in parallel on both sides of the top of the frame, and both of the two guide rails extend along the length direction of the frame, and one end of the two guide rails close to the punching die extends beyond the frame by a certain distance, forming an insertion part for inserting both sides of the lower die.

3. The quick changeover structure according to claim 2, characterized in that, The number of the adjustable casters is four, and each adjustable caster includes a caster part and an adjusting rod part fixed on the caster part. A first adjusting hole is arranged on one side of the adjusting rod part, and the first adjusting hole is a round hole; The adjusting rod parts of the four adjustable casters are respectively sleeved in the corresponding four vertical frames of the frame in a liftable manner, and at least one second adjusting hole is arranged on the side surface of each vertical frame corresponding to the adjusting rod part. The second adjusting hole is a special-shaped hole extending in the vertical direction, and an adjusting screw sequentially passes through the second adjusting hole and the first adjusting hole.

4. The quick changeover structure according to claim 2, wherein The number of the locking and fixing floor feet is four, and each locking and fixing floor foot includes a floor foot part and a clamp; The four clamps are symmetrically arranged in pairs on both sides of the bottom of the frame. The four clamps are all arranged in the vertical direction, and the floor foot parts are installed at the bottoms of the telescopic ends of the four clamps.

5. The quick-change structure according to claim 3, wherein The guiding block part includes a guiding block in a conical shape and a positioning block in a rectangular shape; the two positioning blocks are respectively installed on both sides of the lower die through mounting plates. One end of the two positioning blocks close to the heating lamp box is integrally connected with the guiding block. The guiding block is used to insert into the guiding hole part, and the positioning block is provided with a first pin hole in the vertical direction; The end faces of the two positioning blocks close to one end of the heating lamp box form a die side positioning surface.

6. The quick-change structure according to claim 5, characterized in that The guiding hole part includes a guiding hole matched with the guiding block; the guiding hole is formed by being recessed inward from one end of the guide rail close to the punching die. A horizontal plate is further installed above the guiding hole corresponding to the end of the guide rail. A second pin hole matched with the first pin hole is arranged on the horizontal plate; The end faces of one end of the two guide rails close to the punching die on both sides form a lamp box side positioning surface matched with the die side positioning surface.

7. The quick-change structure according to claim 6, characterized in that, When the two guide rails are inserted into both sides of the lower die, the guiding blocks on both sides of the lower die are inserted into the guiding holes at the front ends of the corresponding guide rails, and the die side positioning surface is attached to the lamp box side positioning surface. The first adjusting hole is aligned with the second adjusting hole in the vertical direction; a pin sequentially passes through the second adjusting hole and the first adjusting hole from top to bottom.

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