Stamping auxiliary device and heat exchange plate stamping method

Abstract

The present application provides a stamping auxiliary device and a heat exchange plate stamping method, the stamping auxiliary device includes: a bottom die seat; a first positioning template, the top surface of which is provided with a first molding area and a first positioning area connected to each other, the first molding area corresponds to the bottom surface of the stamping section, and the first positioning area corresponds to the bottom surface of the adjacent stamping section; a positioning unit, including a pressing plate, the bottom surface of the pressing plate is provided with a second positioning area, the second positioning area is arranged corresponding to at least part of the first positioning area, the pressing plate has a first state of fixing the heat exchange plate, and a second state of releasing the heat exchange plate; a locking unit, having a locking state of limiting the movement of the pressing plate, and an unlocking state; a top die seat, having a third state of stamping the heat exchange plate, and a fourth state of releasing the heat exchange plate; a stamping template, the bottom surface of which is provided with a second molding area corresponding to the first molding area. The stamping auxiliary device and stamping method provided by the present application are simple in structure and easy to operate, and can effectively improve the stamping dimensional accuracy and ensure the quality of the heat exchange plate.

Description

Technical Field

[0001] The present application relates to the technical field of heat exchange plate stamping, and in particular to a stamping auxiliary device and a heat exchange plate stamping method. Background Art

[0002] With the advancement of industrial technology, the increase in petrochemical, machinery, and power production capacity, and the increasing size of ships, heat exchangers are becoming larger and larger, and the size of the corresponding heat exchanger plates is also getting larger and larger. Traditional heat exchanger plates are formed by one-time stamping by stamping equipment. However, due to the difficulty of stamping large plates, the cost of stamping equipment, the accuracy of mold assembly and other factors, the use of small stamping equipment to stamp heat exchanger plates in sections for multiple times is becoming more and more popular, which can greatly reduce the cost of equipment investment. However, if Figure 2 and Figure 3 As shown, the multiple stamping manufacturing method is prone to defects such as sealing groove misalignment and plate bending, resulting in the dimensional accuracy of the heat exchanger plate failing to meet the use requirements. Therefore, there is an urgent need for a stamping auxiliary device that can improve the stamping quality of the heat exchanger plate. Summary of the invention

[0003] In view of this, the purpose of the present application is to propose a stamping auxiliary device and a heat exchange plate stamping method to solve the related problems mentioned in the background technology.

[0004] In a first aspect of the present application, a stamping auxiliary device is provided, which is used for stamping a heat exchange plate, wherein the heat exchange plate includes a plurality of connected stamping sections, and the stamping auxiliary device includes: a bottom die seat; a first positioning template, which is arranged on the bottom die seat and is used to carry the heat exchange plate, and the top surface is provided with a connected first molding area and a first positioning area, the first molding area corresponds to at least a portion of the bottom surface of a stamping section, and the first positioning area corresponds to at least a portion of the bottom surface of an adjacent stamping section; a positioning unit, which is arranged on the bottom die seat and includes a pressing plate, the bottom surface of the pressing plate is provided with a second positioning area, the second positioning area is arranged corresponding to at least a portion of the first positioning area, and the pressing plate has There is a first state of moving downward and fixing the heat exchange plate, and a second state of moving upward and releasing the heat exchange plate; a locking unit is arranged on the bottom mold base, and has a locking state of limiting the movement of the pressure plate, and an unlocking state of restoring the movement of the pressure plate; a top mold base is located above the bottom mold base, and has a third state of moving downward and punching the heat exchange plate, and a fourth state of moving upward and releasing the heat exchange plate; a stamping template is arranged at the bottom of the top mold base, and a second molding area corresponding to the first molding area is provided on the bottom surface, wherein the first positioning area, the first molding area, the second positioning area and the second molding area are all provided with corrugations.

[0005] Furthermore, the bottom mold base is provided with a guide column, the positioning unit includes a connecting seat, the connecting seat is sleeved on the guide column, and the pressure plate is plugged into the connecting seat.

[0006] Furthermore, a first shaft is provided on the side wall of the connecting seat, and a clamping unit is provided on the bottom mold seat, and the clamping unit is used to drive the connecting seat to move up and down; the clamping unit includes a fixed plate, and a first rod and a second rod rotatably connected, the fixed plate is arranged on the bottom mold seat, and a second shaft is provided on the side wall of the fixed plate; one end of the first rod is rotatably connected to the second shaft, and one end of the second rod is rotatably connected to the first shaft, and the first rod is connected to a handle.

[0007] Furthermore, a first spring is connected between the connecting seat and the bottom mold seat, and a first protrusion is provided at the bottom of the side wall of the connecting seat; the locking unit includes a fixed seat, which is arranged on the bottom mold seat, located on the side of the connecting seat, and has a groove on the top; a through hole is provided on the side wall of the groove, and a slider is provided in the groove, a second protrusion is provided on one side of the slider, and a second spring is connected to the side wall of the groove on the other side, and the second protrusion has a fifth state of extending out of the through hole and a sixth state of retracting into the through hole; the top surface of the first protrusion in the first state abuts against the bottom surface of the second protrusion, so that the locking unit is in the locking state.

[0008] Furthermore, an unlocking piece is provided on the bottom surface of the top mold seat, and the unlocking piece is arranged opposite to the fixed seat; the unlocking piece in the third state is located between the connecting seat and the fixed seat, and is abutted against the end of the second protrusion, so that the second protrusion is in the sixth state, and the locking unit is in the unlocking state.

[0009] Furthermore, the first protrusion and the second protrusion are wedge-shaped protrusions with inclined surfaces arranged opposite to each other, the bottom end of the unlocking piece includes two wedge-shaped end heads arranged at intervals, the inclined surfaces of the wedge-shaped end heads and the second protrusion are arranged opposite to each other, and the first protrusion in the third state is located between the two wedge-shaped end heads.

[0010] Furthermore, a second positioning template is provided at the bottom of the top mold seat, and along the length direction of the heat exchange plate, the second positioning template is located between the stamping template and the pressing plate; a third positioning area is provided on the bottom surface of the second positioning template, and the third positioning area is arranged corresponding to part of the first positioning area. The second positioning template in the third state is against the heat exchange plate.

[0011] Furthermore, a third spring is connected between the second positioning template and the top die seat, and the bottom surface height of the second positioning template in the fourth state is lower than the bottom surface height of the stamping template.

[0012] Furthermore, the width of the third positioning zone is equal to the width of the first positioning zone, and the width of the second positioning zone is less than or equal to the width of the first positioning zone.

[0013] According to a second aspect of the present application, a heat exchanger plate stamping method is provided, using the stamping auxiliary device as described in the first aspect above, the heat exchanger plate stamping method comprising: placing a partially stamped heat exchanger plate between a bottom die seat and a top die seat, wherein at least a portion of the unstamped stamping section of the heat exchanger plate corresponds to a first molding area of ​​a first positioning template, and at least a portion of the stamped adjacent stamping section of the heat exchanger plate cooperates with the first positioning area of ​​the first positioning template; controlling the positioning unit to be in a first state and the locking unit to be in a locked state, so that the pressure plate of the positioning unit cooperates with at least a portion of the stamped adjacent stamping section of the heat exchanger plate to lock and position the heat exchanger plate; controlling the top die seat to be in a third state, so that the second molding area of ​​the stamping template corresponds to at least a portion of the unstamped stamping section of the heat exchanger plate, and stamping the stamping section; controlling the locking unit to be in an unlocked state, the positioning unit to be in a second state, and the top die seat to be in a fourth state, and moving the heat exchanger plate.

[0014] From the above, it can be seen that the stamping auxiliary device and the heat exchange plate stamping method provided by the present application, the stamping auxiliary device includes: a bottom mold base; a first positioning template, which is arranged on the bottom mold base and is used to carry the heat exchange plate, and the top surface is provided with a connected first molding area and a first positioning area, the first molding area corresponds to at least a part of the bottom surface of a stamping section, and the first positioning area corresponds to at least a part of the bottom surface of an adjacent stamping section; a positioning unit, which is arranged on the bottom mold base, and includes a pressing plate, and the bottom surface of the pressing plate is provided with a second positioning area, and the second positioning area is arranged corresponding to at least a part of the first positioning area, and the pressing plate has a first state of moving downward and fixing the heat exchange plate, and a second state of moving upward and releasing the heat exchange plate; a locking unit, which is arranged on the bottom mold base, and has a locking state for limiting the movement of the pressing plate, and an unlocking state for restoring the movement of the pressing plate. ; The top die seat is located above the bottom die seat, and has a third state of moving downward and stamping the heat exchange plate, and a fourth state of moving upward and relaxing the heat exchange plate; the stamping template is arranged at the bottom of the top die seat, and the bottom surface is provided with a second molding area corresponding to the first molding area, wherein the first positioning area, the first molding area, the second positioning area and the second molding area are all provided with corrugations; by arranging the positioning unit and cooperating with the first positioning template, when stamping the heat exchange plate, at least a part of the area of ​​the heat exchange plate stamped in the previous time can be pre-clamped, so that the heat exchange plate can be tightly attached to the first positioning template, reducing the shrinkage deformation of the plate, etc., so as to achieve the purpose of accurately positioning the plate and ensure the stamping accuracy of the heat exchange plate; the stamping auxiliary device and the heat exchange plate stamping method have simple structures and are easy to operate, and can effectively improve the stamping size accuracy and ensure the quality of the heat exchange plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a structural schematic diagram of a heat exchange plate;

[0017] Figure 2 It is a schematic diagram of the structure of the heat exchange plate stamping seal groove misalignment;

[0018] Figure 3 It is a structural schematic diagram of the side bending of the stamped plate of the heat exchange plate;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of a stamping auxiliary device in an embodiment of the present application;

[0020] Figure 5 is a structural schematic diagram of a first positioning template;

[0021] Figure 6 It is a structural schematic diagram of the top mold base;

[0022] Figure 7 It is a schematic diagram of the structure of the cooperation between the positioning unit and the pressing unit;

[0023] Figure 8 It is a working schematic diagram of the positioning unit and the pressing unit when pressing the heat exchange plate;

[0024] Fig. 9 It is a structural schematic diagram of the cooperation between the locking unit and the positioning unit;

[0025] Fig.10 is a schematic diagram of the side structure of the punching auxiliary device in the second state and the fourth state;

[0026] Fig.11 is a schematic diagram of the side structure of the punching auxiliary device in a first state and a locked state;

[0027] Fig.12 It is a schematic diagram of the side structure of the stamping auxiliary device in the unlocked state and the third state.

[0028] Figure numerals: 1, heat exchange plate; 1-1, heat exchange area; 1-2, side bag; 2, bottom mold base; 2-1, guide column; 2-2, first spring; 3, first positioning template; 3-1, first molding area; 3-2, first positioning area; 4, positioning unit; 4-1, pressure plate; 4-2, second positioning area; 4-3, connecting seat; 4-4, first shaft; 4-5, first protrusion; 5, locking unit; 5-1, fixing seat; 5-2, groove; 5-3, slider; 5-4, second protrusion 5-5, second spring; 5-6, through hole; 6, top die seat; 6-1, unlocking piece; 6-2, wedge-shaped end; 6-3, avoidance hole; 7, stamping template; 7-1, second molding area; 8, clamping unit; 8-1, fixing plate; 8-2, first rod; 8-3, second rod; 8-4, second shaft; 8-5, handle; 8-6, connecting rod; 8-7, avoidance groove; 8-8, third rod; 9, second positioning template; 9-1, third positioning area; 9-2, third spring. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0030] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0031] With the advancement of industrial technology, the increase in petrochemical, machinery, and power production capacity, and the increasing size of ships, heat exchangers are becoming larger and larger, and the size of the corresponding heat exchanger plates is also getting larger and larger. Traditional heat exchanger plates are formed by one-time stamping by stamping equipment. However, due to the difficulty of stamping large plates, the cost of stamping equipment, the accuracy of mold assembly and other factors, the use of small stamping equipment to stamp heat exchanger plates in sections for multiple times is becoming more and more popular, which can greatly reduce the cost of equipment investment. However, if Figure 2 and Figure 3As shown, the multiple stamping manufacturing method is prone to defects such as sealing groove misalignment and plate bending, resulting in the dimensional accuracy of the heat exchanger plate failing to meet the use requirements. Therefore, there is an urgent need for a stamping auxiliary device that can improve the stamping quality of the heat exchanger plate.

[0032] Compared with the one-time stamping of plates, there are many technical bottlenecks in the multiple forming of plates, such as large springback and poor flatness of the plates after forming, which makes the positioning of the next forming difficult and the splicing error large. In addition, the multiple cold working hardening deformation at the splicing position of the multiple forming leads to poor forming quality stability. Figure 1 The figure shows a schematic diagram of multiple stamping forming of the same plate. The heat exchange plate 1 includes ma stamping sections and needs to be stamped m times. During the nth and n+1st forming, the positioning accuracy of the two formed plates directly affects the forming quality and dimensional accuracy of the formed plates, which will cause assembly errors and reduce the pressure-bearing capacity of the final product. How to accurately position and fix the plates before the second and subsequent stamping becomes one of the difficulties of the plate segmented forming technology.

[0033] Some segmented forming technologies use the method of positioning the lower die corrugation and the die pressing plate for positioning when the n+1 forming is performed after the nth forming. During the forming process, the lower die first uses the core with the same corrugation as the nth forming to overlap the corrugation of the nth forming plate for rough positioning. When the upper die descends during the forming process, the upper die positioning plate corresponding to the lower die positioning plate first contacts the plate, and the spring pressure is used to press the plate and the lower die positioning plate tightly for secondary fine positioning. After the positioning is completed, the n+1 forming process is completed. During the forming process, due to the rebound and warping deformation of the previously formed plate, it cannot fit well with the lower die positioning plate. When positioning with the upper die positioning plate again, due to the fast pressing speed, the plate cannot fit the lower die positioning plate immediately at the upper die positioning plate, resulting in large random deviations in the secondary fine positioning position of the plate. The final stamped plate is prone to defects such as plate side bending and sealing groove misalignment, resulting in quality problems such as the dimensional accuracy of the formed plate not meeting the requirements and a significant decrease in the pressure bearing capacity of the product.

[0034] The technical solution of the present application is described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0035] Some embodiments of the present application provide a stamping auxiliary device, which is used for stamping a heat exchange plate 1, such as Figure 1 As shown, the heat exchange plate 1 includes a plurality of connected stamping sections, such as Figures 4 to 6As shown, the stamping auxiliary device includes: a bottom die base 2; a first positioning template 3, which is arranged on the bottom die base 2 and is used to carry the heat exchange plate 1, and the top surface is provided with a connected first molding area 3-1 and a first positioning area 3-2, the first molding area 3-1 corresponds to at least part of the bottom surface of a stamping section, and the first positioning area 3-2 corresponds to at least part of the bottom surface of an adjacent stamping section; a positioning unit 4, which is arranged on the bottom die base 2, includes a pressing plate 4-1, and the bottom surface of the pressing plate 4-1 is provided with a second positioning area 4-2, the second positioning area 4-2 is arranged corresponding to at least part of the first positioning area 3-2, and the pressing plate 4-1 has a first state of moving downward and fixing the heat exchange plate 1, and a second state of moving upward and releasing the heat exchange plate 1; a locking unit 5, arranged on the bottom mold base 2, having a locking state of limiting the movement of the pressure plate 4-1, and an unlocking state of restoring the movement of the pressure plate 4-1; a top mold base 6, located above the bottom mold base 2, having a third state of moving downward and punching the heat exchange plate 1, and a fourth state of moving upward and releasing the heat exchange plate 1; a stamping template 7, arranged at the bottom of the top mold base 6, and a second molding area 7-1 corresponding to the first molding area 3-1 is provided on the bottom surface, wherein the first positioning area 3-2, the first molding area 3-1, the second positioning area 4-2 and the second molding area 7-1 are all provided with corrugations.

[0036] like Figure 1 As shown, the heat exchange plate 1 includes multiple connected stamping sections a, 1a is the stamping section for the first stamping, ma is the stamping section for the last stamping, and multiple stamping forming is performed section by section in the order of 1a to ma to finally form a complete heat exchange plate 1.

[0037] like Figure 4 As shown, the stamping auxiliary device includes a bottom die seat 2, such as a steel seat; a first positioning template 3, such as a steel plate, is arranged on the bottom die seat 2 and is used to carry the heat exchange plate 1, such as Figure 5 As shown, the top surface of the first positioning template 3 is provided with a connected first molding area 3-1 and a first positioning area 3-2, and the first positioning area 3-2 and the first molding area 3-1 are both provided with corrugations. The first molding area 3-1 corresponds to at least a portion of the bottom surface of a stamping section, for example, corresponding to a complete stamping section, or corresponding to a partial area of ​​the stamping section, without specific limitation, and is used for stamping the heat exchange plate 1. The first positioning area 3-2 corresponds to at least a portion of the bottom surface of an adjacent stamping section, for example, corresponding to a stamping section that has been stamped previously, or corresponding to a partial area of ​​the stamping section, or corresponding to multiple stamping sections, without specific limitation, and is used for positioning the heat exchange plate 1. The first positioning area 3-2 may also be provided with only partial corrugations, which can cooperate with the pressing plate 4-1.

[0038] The positioning unit 4 is arranged on the bottom mold base 2, and includes a pressing plate 4-1, such as a T-shaped steel plate. Figure 7 As shown, the bottom surface of the pressure plate 4-1 is provided with a second positioning area 4-2, and the second positioning area 4-2 is also provided with corrugations. The second positioning area 4-2 is arranged corresponding to at least part of the first positioning area 3-2, for example, corresponding to the sealing groove part in the first positioning area 3-2, or corresponding to the entire first positioning area 3-2, which is not specifically limited and is used to position the heat exchange plate 1; as shown Figure 8 As shown, the pressing plate 4-1 has a first state in which it moves downward and fixes the heat exchange plate 1. Fig.10 As shown, and the second state of moving upward and relaxing the heat exchange plate 1.

[0039] The locking unit 5 is arranged on the bottom mold base 2. Fig. 9 As shown, there is a locking state that limits the movement of the pressing plate 4-1, such as Fig.10 As shown, as well as restoring the unlocked state of the movement of the pressing plate 4-1, the pressing plate 4-1 can be locked when it drops to a certain height, so that the pressing plate 4-1 maintains the first state.

[0040] The top mold base 6 is located above the bottom mold base 2, and is, for example, a steel base. Fig.12 As shown, the top die holder 6 has a third state of moving downward and punching the heat exchange plate 1, as shown in FIG. Fig.10 As shown, and the fourth state of moving upward and relaxing the heat exchange plate 1; the stamping template 7 is, for example, a steel plate, arranged at the bottom of the top die seat 6, and the bottom surface of the stamping template 7 is provided with a second stamping area 7-1 corresponding to the first stamping area 3-1, as shown Figure 6 As shown, the second molding area 7 - 1 is provided with corrugations for stamping the heat exchange plate 1 .

[0041] By arranging the positioning unit 4 and the first positioning template 3 to cooperate, when stamping the heat exchange plate 1, at least a part of the area of ​​the heat exchange plate 1 stamped last time can be pre-clamped, so that the heat exchange plate 1 can fit tightly against the first positioning template 3, reducing the shrinkage deformation of the plate, etc., so as to achieve the purpose of accurately positioning the plate and ensure the stamping accuracy of the heat exchange plate 1.

[0042] The stamping auxiliary device can be used for subsequent stamping work of the heat exchanger plate 1 that has been stamped at least once. There can be one or more stamping auxiliary devices corresponding to one heat exchanger plate 1. For example, a stamping auxiliary device can be set on both sides of the heat exchanger plate 1 along the width direction, or multiple positioning units 4 can be set in one stamping auxiliary device to facilitate locking and positioning.

[0043] The stamping auxiliary device has a simple structure and is easy to operate. It can effectively improve the stamping size accuracy, ensure the quality of the heat exchange plate 1, greatly improve the positioning accuracy of the plate during pressing, greatly reduce the plate pressing defects caused by positioning accuracy, reduce the plate pressing scrap rate, and reduce the equipment investment cost.

[0044] In some embodiments, Figure 7 As shown, the bottom mold base 2 is provided with a guide column 2-1, the positioning unit 4 includes a connecting seat 4-3, the connecting seat 4-3 is sleeved on the guide column 2-1, and the pressure plate 4-1 is plugged into the connecting seat 4-3.

[0045] like Figure 7 As shown, the positioning unit 4 includes a connecting seat 4-3, and the pressure plate 4-1 is plugged into the connecting seat 4-3, for example, through a square socket. A guide column 2-1 is provided on the bottom mold base 2, and the connecting seat 4-3 can be sleeved on the guide column 2-1 through a circular through hole 5-6. The connecting seat 4-3 can move up and down along the guide column 2-1 to drive the pressure plate 4-1 to move up and down.

[0046] In some embodiments, Figure 7 and Figure 8 As shown, the side wall of the connecting seat 4-3 is provided with a first shaft 4-4, and the bottom mold seat 2 is provided with a clamping unit 8, and the clamping unit 8 is used to drive the connecting seat 4-3 to move up and down; the clamping unit 8 includes a fixed plate 8-1, and a first rod 8-2 and a second rod 8-3 that are rotatably connected, the fixed plate 8-1 is arranged on the bottom mold seat 2, and the side wall of the fixed plate 8-1 is provided with a second shaft 8-4; one end of the first rod 8-2 is rotatably connected to the second shaft 8-4, one end of the second rod 8-3 is rotatably connected to the first shaft 4-4, and the first rod 8-2 is connected to a handle 8-5.

[0047] like Figure 7 As shown, a clamping unit 8 is provided on the bottom mold base 2, and the clamping unit 8 can drive the connecting base 4-3 to move up and down to facilitate the user to clamp or release the pressing plate 4-1. The clamping unit 8 includes a fixed plate 8-1, and a first rod 8-2 and a second rod 8-3 that are rotatably connected. The fixed plate 8-1 is set on the bottom mold base 2, and the side wall of the connecting base 4-3 is provided with a first shaft 4-4, and the side wall of the fixed plate 8-1 is provided with a second shaft 8-4; one end of the first rod 8-2 is rotatably connected to the second shaft 8-4, and one end of the second rod 8-3 is rotatably connected to the first shaft 4-4. The first rod 8-2 is connected to a handle 8-5, as shown in FIG. Figure 8 As shown, by turning the handle 8-5 upward, according to the lever principle, the connecting seat 4-3 will move downward, so that the pressing plate 4-1 can press the heat exchange plate 1 to position it.

[0048] In some embodiments, Fig. 9 and Fig.11As shown, a first spring 2-2 is connected between the connecting seat 4-3 and the bottom mold seat 2, and a first protrusion 4-5 is provided at the bottom of the side wall of the connecting seat 4-3; the locking unit 5 includes a fixed seat 5-1, and the fixed seat 5-1 is arranged on the bottom mold seat 2, located on the side of the connecting seat 4-3, and a groove 5-2 is provided on the top; a through hole 5-6 is provided on the side wall of the groove 5-2, and a slider 5-3 is provided in the groove 5-2, a second protrusion 5-4 is provided on one side of the slider 5-3, and a second spring 5-5 is connected to the side wall of the groove 5-2 on the other side, and the second protrusion 5-4 has a fifth state of extending out of the through hole 5-6 and a sixth state of retracting into the through hole 5-6; the top surface of the first protrusion 4-5 in the first state is abutted against the bottom surface of the second protrusion 5-4, so that the locking unit 5 is in the locking state.

[0049] like Fig.10 As shown, a first spring 2-2 is connected between the connecting seat 4-3 and the bottom mold seat 2 for resetting the connecting seat 4-3, and a first protrusion 4-5 is provided at the bottom of the side wall of the connecting seat 4-3 for cooperating with the locking unit 5.

[0050] The locking unit 5 includes a fixing seat 5-1, which is arranged on the bottom mold seat 2, located on the side of the connecting seat 4-3, and has a groove 5-2 on the top; Fig. 9 As shown, the side wall of the groove 5-2 is provided with a through hole 5-6, and a slider 5-3 is provided in the groove 5-2. A second protrusion 5-4 is provided on one side of the slider 5-3, and a second spring 5-5 is connected to the side wall of the groove 5-2 on the other side. The slider 5-3 can move horizontally along the groove 5-2, as shown in FIG. Fig.10 and Fig.11 As shown, the second protrusion 5-4 has a fifth state of extending out of the through hole 5-6, as shown in FIG. Fig.12 As shown, and the sixth state of the retracted through hole 5-6; Fig. 9 As shown, the top surface of the first protrusion 4-5 in the first state abuts against the bottom surface of the second protrusion 5-4, so that the locking unit 5 is in a locked state; Fig.10 As shown, when the pressing plate 4-1 does not press the heat exchange plate 1, the first protrusion 4-5 and the second protrusion 5-4 are separated from each other, and the second protrusion 5-4 is in the fifth state; in order to press the heat exchange plate 1, the connecting seat 4-3 will move downward, and the first protrusion 4-5 will also move downward. After the first protrusion 4-5 contacts the second protrusion 5-4, the second protrusion 5-4 will be pushed back into the through hole 5-6, that is, the fifth state is changed to the sixth state; when the pressing plate 4-1 presses the heat exchange plate 1, as shown Fig.11As shown, the first protrusion 4-5 is located below the second protrusion 5-4. At this time, the second protrusion 5-4 extends out of the through hole 5-6 again, that is, it changes from the sixth state to the fifth state. Under the action of the first spring 2-2, the first protrusion 4-5 is stuck by the second protrusion 5-4 to achieve a locked state; subsequently, the second protrusion 5-4 can be changed from the fifth state to the sixth state, so that the first protrusion 4-5 can move upward to reach an unlocked state.

[0051] In some embodiments, Fig.12 As shown, an unlocking piece 6-1 is provided on the bottom surface of the top mold seat 6, and the unlocking piece 6-1 is arranged opposite to the fixed seat 5-1; the unlocking piece 6-1 in the third state is located between the connecting seat 4-3 and the fixed seat 5-1, and is abutted against the end of the second protrusion 5-4, so that the second protrusion 5-4 is in the sixth state, and the locking unit 5 is in the unlocking state.

[0052] like Figure 4 As shown, an unlocking piece 6-1 is provided on the bottom surface of the top die seat 6, and the unlocking piece 6-1 is arranged opposite to the fixed seat 5-1, and the unlocking piece 6-1 is used to change the locking unit 5 from a locked state to an unlocked state; after the pressure plate 4-1 presses the heat exchange plate 1 and is in a locked state, the top die seat 6 moves downward to stamp the heat exchange plate 1, and the unlocking piece 6-1 will move downward with the top template, and when the stamping template 7 contacts the heat exchange plate 1 for stamping, the unlocking piece 6-1 will contact the second protrusion 5-4 and push the second protrusion 5-4 back to the through hole 5-6, so that the second protrusion 5-4 is in the sixth state, and the locking unit 5 is in an unlocked state, so that the first protrusion 4-5 can move upward, automatically releasing the pressing and locking of the heat exchange plate 1 by the pressure plate 4-1, so that after the stamping is completed, there is no need to perform the unlocking process, and the heat exchange plate 1 can be moved directly to improve the pressing efficiency.

[0053] In some embodiments, Figure 6 and Fig. 9 As shown, the first protrusion 4-5 and the second protrusion 5-4 are wedge-shaped protrusions with inclined surfaces arranged opposite to each other, and the bottom end of the unlocking piece 6-1 includes two wedge-shaped end heads 6-2 arranged at intervals, and the inclined surfaces of the wedge-shaped end heads 6-2 and the second protrusion 5-4 are arranged opposite to each other, and the first protrusion 4-5 in the third state is located between the two wedge-shaped end heads 6-2.

[0054] like Fig. 9As shown, the first protrusion 4-5 and the second protrusion 5-4 are wedge-shaped protrusions with inclined surfaces arranged opposite to each other, and the plane of the first protrusion 4-5 faces upward, and the plane of the second protrusion 5-4 faces downward, so that when the connecting seat 4-3 is moved downward, after the first protrusion 4-5 contacts the second protrusion 5-4, the second protrusion 5-4 can be easily pushed into the through hole 5-6; the top surface of the first protrusion 4-5 can also be abutted against the bottom surface of the second protrusion 5-4, so as to facilitate the engagement of the first protrusion 4-5 and the second protrusion 5-4.

[0055] like Figure 6 As shown, the bottom end of the unlocking piece 6-1 includes two wedge-shaped ends 6-2 spaced apart from each other. Fig.12 As shown, the wedge-shaped end 6-2 and the first protrusion 4-5 have the same orientation and are arranged opposite to the inclined surface of the second protrusion 5-4. Similarly, when the locking unit 5 is unlocked, the second protrusion 5-4 can be easily pushed back into the through hole 5-6; the first protrusion 4-5 in the third state is located between the two wedge-shaped ends 6-2, so that after the wedge-shaped end 6-2 is against the second protrusion 5-4, the first protrusion 4-5 can move upward from the area between the two wedge-shaped ends 6-2 to release the pressure plate 4-1.

[0056] In some embodiments, Figure 6 and Fig.10 As shown, the bottom surface of the top mold base 6 is provided with an avoidance hole 6 - 3 corresponding to the guide column 2 - 1 , which provides an avoidance space and also plays a limiting role, facilitating the positioning of the top mold base 6 .

[0057] In some embodiments, Figure 4 As shown, a group of the first rod 8-2 and the second rod 8-3 are respectively provided on the opposite sides of the connecting seat 4-3; there are two locking units 5, which are also respectively located on the opposite sides of the connecting seat 4-3; there are four guide columns 2-1 to ensure that the connecting seat 4-3 moves up and down without tilting.

[0058] like Figure 7 As shown, a group of first rods 8-2 and second rods 8-3 are respectively provided on both sides of the connecting seat 4-3 to facilitate the smooth movement of the connecting seat 4-3; Fig.10 As shown, there are also two locking units 5 and unlocking pieces 6-1, which are respectively located on the opposite sides of the connecting seat 4-3, so as to facilitate the smooth locking or unlocking of the connecting seat 4-3.

[0059] In some embodiments, Figure 7As shown, the clamping unit 8 also includes a connecting rod 8-6, both ends of which are connected to the first rod 8-2, and the handle 8-5 is connected to the middle part of the connecting rod 8-6; the second shaft 8-4 passes through the fixed plate 8-1, and an avoidance groove 8-7 is provided in the middle part of the top end of the fixed plate 8-1, and the middle part of the connecting rod 8-6 is connected to the third rod 8-8, and the end of the third rod 8-8 is located in the avoidance groove 8-7 and is rotatably connected to the second shaft 8-4.

[0060] like Figure 7 As shown, the clamping unit 8 also includes a connecting rod 8-6 to connect the two groups of first rods 8-2; and one side of the middle part of the connecting rod 8-6 is connected to the handle 8-5, and the other side is connected to the third rod 8-8. The third rod 8-8 is also rotatably connected to the fixed plate 8-1 to balance the force and facilitate the up and down movement of the connecting seat 4-3.

[0061] In some embodiments, Figure 4 and Figure 5 As shown, a second positioning template 9 is provided at the bottom of the top mold base 6, and along the length direction of the heat exchange plate 1, the second positioning template 9 is located between the stamping template 7 and the pressing plate 4-1; a third positioning area 9-1 is provided on the bottom surface of the second positioning template 9, and the third positioning area 9-1 is arranged corresponding to part of the first positioning area 3-2, and the second positioning template 9 in the third state is against the heat exchange plate 1.

[0062] like Figure 4 As shown, the top mold base 6 is also provided with a second positioning template 9, the second positioning template 9 can move with the top mold base 6, and the bottom of the second positioning template 9 is provided with a third positioning area 9-1; Figure 5 As shown, the third positioning area 9-1 is provided with corrugations, which cooperate with a part of the first positioning area 3-2, and can press the heat exchange plate 1 when stamping the heat exchange plate 1, further improve the positioning accuracy of the heat exchange plate 1, greatly reduce the plate forming defects caused by positioning accuracy, reduce the plate pressing scrap rate, and reduce the equipment investment cost; the second positioning template 9 is arranged between the stamping template 7 and the pressing plate 4-1, and can also play a transition role to avoid stress concentration at the position of the pressing plate 4-1, so that the heat exchange plate 1 can be more stable during stamping and avoid sliding of the sheet.

[0063] In some embodiments, Figure 4 and Figure 6 As shown, a third spring 9 - 2 is connected between the second positioning template 9 and the top mold base 6 , and the bottom height of the second positioning template 9 in the fourth state is lower than the bottom height of the stamping template 7 .

[0064] like Figure 6As shown, a plurality of third springs 9-2 are connected between the second positioning template 9 and the top die seat 6, so that the second positioning template 9 can be squeezed and moved; from the perspective of the entire stamping auxiliary device, the bottom height of the second positioning template 9 in the fourth state is lower than the bottom height of the stamping template 7, so that when the second positioning template 9 moves downward with the top die seat 6, it can contact the heat exchange plate 1 before the stamping template 7, and pre-press and position it, thereby ensuring the stamping quality of the heat exchange plate 1.

[0065] In some embodiments, Figure 4 and Figure 6 As shown, the width of the third positioning area 9-1 is equal to the width of the first positioning area 3-2, and the width of the second positioning area 4-2 is less than or equal to the width of the first positioning area 3-2.

[0066] The first positioning area 3-2, for example, corresponds to half of the area of ​​the heat exchange plate 1, that is, it corresponds to part of the edge package 1-2 and the heat exchange area 1-1. The third positioning area 9-1 can maintain the same width as the first positioning area 3-2, because it is closer to the stamping template 7. The large-area cooperation between the third positioning area 9-1 and the first positioning area 3-2 can avoid the movement of the formed part of the heat exchange plate 1; and the width of the second positioning area 4-2 can be smaller than the width of the first positioning area 3-2. For example, the second positioning area 4-2 is only set corresponding to part of the edge package 1-2. Because it is relatively far from the stamping template 7, it is sufficient to ensure that the heat exchange plate 1 is clamped in advance, which can save production costs and ensure the clamping effect of the pressure plate 4-1.

[0067] In some embodiments of the present application, a heat exchange plate stamping method is provided, using the stamping auxiliary device described in any of the above embodiments, the heat exchange plate stamping method comprising:

[0068] S1. Place the partially stamped heat exchange plate 1 between the bottom die seat 2 and the top die seat 6, at least part of the unstamped stamping section of the heat exchange plate 1 corresponds to the first stamping area 3-1 of the first positioning template 3, and at least part of the stamped adjacent stamping section of the heat exchange plate 1 matches the first positioning area 3-2 of the first positioning template 3.

[0069] Place the heat exchange plate 1 between the bottom mold base 2 and the top mold base 6, for example Figure 1 The (n+1)a stamping section of the middle heat exchange plate 1 is stamped, and the na stamping section can be matched with the first positioning area 3-2, and the (n+1)a stamping section corresponds to the first molding area 3-1.

[0070] S2. Control the positioning unit 4 to be in the first state and the locking unit 5 to be in the locking state, so that the pressing plate 4-1 of the positioning unit 4 cooperates with at least a partial area of ​​the adjacent stamping section of the heat exchange plate 1 that has been stamped, and the heat exchange plate 1 is locked and positioned.

[0071] The connection seat 4-3 is driven to move by the clamping unit 8, so that the pressing plate 4-1 is in the first state, and the locking unit 5 is in the locking state, ensuring that the pressing plate 4-1 and the first positioning template 3 can clamp the heat exchange plate 1. At this time, the state of the stamping auxiliary device is as follows: Fig.11 shown.

[0072] S3, controlling the top die holder 6 to be in the third state, so that the second die pressing area 7-1 of the stamping template 7 corresponds to at least a portion of the un-stamped stamping section of the heat exchange plate 1, and stamping the stamping section.

[0073] The top die holder 6 is driven downward by a driving device, such as a cylinder, and the (n+1)a stamping section is stamped by the stamping template 7. At this time, the state of the stamping auxiliary device is as follows: Fig.12 shown.

[0074] S4, control the locking unit 5 to be in the unlocked state, the positioning unit 4 to be in the second state, the top mold base 6 to be in the fourth state, and move the heat exchange plate 1.

[0075] The locking unit 5 is unlocked by the unlocking piece 6-1, and the positioning unit 4 is placed in the second state by the first spring 2-2, and the heat exchange plate 1 is released. After the pressing is stable for a period of time, the top die holder 6 is driven upward by the driving device. At this time, the state of the stamping auxiliary device is as follows: Fig.10 As shown, the heat exchange plate 1 can be transferred for subsequent stamping work.

[0076] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0077] In addition, when details are set forth to describe exemplary embodiments of the present application, it will be apparent to those skilled in the art that embodiments of the present application may be implemented without these details or when these details are varied. Therefore, these descriptions should be considered to be illustrative rather than restrictive. Although the present application has been described in conjunction with the embodiments of the present application, many replacements, modifications, and variations of these embodiments will be apparent to those of ordinary skill in the art based on the foregoing description.

[0078] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A stamping auxiliary device, used for stamping heat exchange plates, comprising: Bottom mold base; A first positioning template is arranged on the bottom mold base and is used to carry the heat exchange plate. The top surface is provided with a first molding area and a first positioning area connected to each other. The first molding area corresponds to at least a part of the bottom surface of a stamping section, and the first positioning area corresponds to at least a part of the bottom surface of an adjacent stamping section. The positioning unit is arranged on the bottom mold base, and includes a pressing plate, and a second positioning area is arranged on the bottom surface of the pressing plate, and the second positioning area is arranged corresponding to at least a part of the first positioning area. The pressing plate has a first state of moving downward and fixing the heat exchange plate, and a second state of moving upward and releasing the heat exchange plate; The locking unit is arranged on the bottom mold base and has a locking state for limiting the movement of the pressing plate and an unlocking state for restoring the movement of the pressing plate; The top die seat is located above the bottom die seat and has a third state of moving downward and punching the heat exchange plate, and a fourth state of moving upward and releasing the heat exchange plate; The stamping template is arranged at the bottom of the top die seat, and the bottom surface is provided with a second molding area corresponding to the first molding area, wherein the first positioning area, the first molding area, the second positioning area and the second molding area are all provided with corrugations; A second positioning template is provided at the bottom of the top die seat, and along the length direction of the heat exchange plate, the second positioning template is located between the stamping template and the pressing plate; a third positioning area is provided on the bottom surface of the second positioning template, and the third positioning area is arranged corresponding to a part of the first positioning area, and the second positioning template in the third state abuts against the heat exchange plate; A guide column is provided on the bottom mold seat, and the positioning unit includes a connecting seat, the connecting seat sleeve is arranged on the guide column, and the pressure plate is plugged into the connecting seat; a first axis is provided on the side wall of the connecting seat, and a clamping unit is provided on the bottom mold seat, and the clamping unit is used to drive the connecting seat to move up and down; the clamping unit includes a fixed plate, and a first rod and a second rod that are rotatably connected, the fixed plate is arranged on the bottom mold seat, and a second axis is provided on the side wall of the fixed plate.

2. The punching auxiliary device according to claim 1, characterized in that: One end of the first rod is rotatably connected to the second shaft, one end of the second rod is rotatably connected to the first shaft, and the first rod is connected to a handle.

3. The punching auxiliary device according to claim 2, characterized in that: A first spring is connected between the connecting seat and the bottom mold seat, and a first protrusion is provided at the bottom of the side wall of the connecting seat; The locking unit comprises a fixing seat, which is arranged on the bottom mold seat, located on the side of the connecting seat, and has a groove on the top; A through hole is provided on the side wall of the groove, a slider is provided in the groove, a second protrusion is provided on one side of the slider, and a second spring is connected to the side wall of the groove on the other side, and the second protrusion has a fifth state of extending out of the through hole and a sixth state of retracting into the through hole; The top surface of the first protrusion in the first state abuts against the bottom surface of the second protrusion, so that the locking unit is in the locking state.

4. The punching auxiliary device according to claim 3, characterized in that: The bottom surface of the top mold seat is provided with an unlocking piece, and the unlocking piece is arranged opposite to the fixing seat; The unlocking piece in the third state is located between the connecting seat and the fixing seat, and abuts against the end of the second protrusion, so that the second protrusion is in the sixth state and the locking unit is in the unlocking state.

5. The punching auxiliary device according to claim 4, characterized in that: The first protrusion and the second protrusion are wedge-shaped protrusions with inclined surfaces arranged opposite to each other, and the bottom end of the unlocking piece includes two wedge-shaped end heads arranged at intervals; The inclined surfaces of the wedge-shaped end and the second protrusion are arranged opposite to each other, and the first protrusion in the third state is located between the two wedge-shaped end heads.

6. The punching auxiliary device according to claim 1, characterized in that: A third spring is connected between the second positioning template and the top die seat, and the bottom surface height of the second positioning template in the fourth state is lower than the bottom surface height of the stamping template.

7. The punching auxiliary device according to claim 1, characterized in that: The width of the third positioning zone is equal to that of the first positioning zone, and the width of the second positioning zone is less than or equal to that of the first positioning zone.

8. A heat exchange plate stamping method, characterized in that: Using the stamping auxiliary device as described in any one of claims 1 to 7, the heat exchange plate stamping method includes: Placing a partially stamped heat exchange plate between a bottom die seat and a top die seat, wherein at least a portion of a stamped section of the heat exchange plate that has not been stamped corresponds to a first stamping area of ​​a first positioning template, and at least a portion of a stamped adjacent stamped section of the heat exchange plate that has been stamped matches the first positioning area of ​​the first positioning template; Controlling the positioning unit to be in a first state and the locking unit to be in a locking state, so that the pressing plate of the positioning unit cooperates with at least a partial area of ​​the adjacent stamping section of the heat exchange plate that has been stamped, and the heat exchange plate is locked and positioned; Controlling the top die holder to be in a third state so that the second die pressing area of ​​the stamping template corresponds to at least a portion of the stamping section of the heat exchange plate that has not been stamped, and stamping the stamping section; The locking unit is controlled to be in an unlocked state, the positioning unit is controlled to be in a second state, the top mold base is controlled to be in a fourth state, and the heat exchange plate is moved.

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