A continuous material feeding and stacking device

Abstract

This invention proposes a continuous unloading and stacking device, comprising: an upper mold, a lower mold, and a liftable lifting platform; the upper and lower molds are arranged opposite each other and connected by a guide assembly; the upper mold includes a top plate, a template group, and at least two unloading punches; the template group is located below the top plate and fixedly assembled with the top plate, and the template group includes an upper template; all unloading punches are sequentially installed on the upper template, and each unloading punch is equipped with a drive mechanism for driving its vertical extension and retraction; the lower mold includes a base plate and unloading dies installed on the base plate and paired with each unloading punch; the number of lifting platforms is consistent with the number of unloading dies, and they are arranged one-to-one below each unloading die. This invention realizes continuous unloading and stacking of heat exchanger plates, ensuring uninterrupted operation of the production line, improving production efficiency and automation level, and effectively solving the efficiency bottleneck problem caused by downtime for stacking in traditional single-station production.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal stamping and forming technology, specifically to a continuous material feeding and stacking device. Background Technology

[0002] With the continuous improvement of industrial automation, especially in the stamping and forming fields, the requirements for production efficiency, continuous operation capability, and automation integration are increasing. In the production process of sheet-like parts such as heat exchanger fins, the finished products after stamping and blanking usually need to be neatly stacked (palletized) to facilitate subsequent transportation, packaging, or processing.

[0003] Traditional production processes typically combine single-station blanking dies with subsequent independent stacking processes. Specifically, the production line first uses an upper and lower die set consisting of a single blanking punch and die to cut the sheet metal. The blanked parts either fall directly or are collected via a simple chute, completing the initial separation. Subsequently, these scattered parts usually need to be conveyed to another independent processing line or dedicated station, where they are manually or with auxiliary stacking equipment (such as robotic arms or stacking machines) to arrange and stack them into neat stacks. This traditional production process has the following two problems:

[0004] 1. Stamping (blanking) and stacking (palletizing) are separated into two independent processes in space and time, resulting in a complex production line layout, a lengthy process, and the need for additional equipment and manpower investment, with low automation integration.

[0005] 2. If stacking is required directly at the original material drop position, the entire stamping production line must be completely stopped whenever a stack reaches the predetermined height or quantity, waiting for manual or equipment removal of the full stack and replacement of the empty pallet, causing frequent interruptions in the production process. This intermittent operation mode severely restricts equipment utilization and overall production cycle time, becoming a prominent obstacle to high-efficiency, continuous, and automated production. Utility Model Content

[0006] In order to solve the technical problems existing in the background art, this utility model proposes a continuous material feeding and stacking device.

[0007] This utility model proposes a continuous material feeding and stacking device, comprising: an upper mold, a lower mold, and a liftable lifting platform, wherein:

[0008] The upper and lower dies are positioned opposite each other and connected by a guide assembly; the upper die includes a top plate, a template group, and at least two blanking punches; the template group is located below the top plate and is fixedly assembled with the top plate, and the template group includes an upper template; all blanking punches are sequentially installed on the upper template, and each blanking punch is equipped with a drive mechanism for driving its vertical extension and retraction.

[0009] The lower die includes a base plate and blanking dies mounted on the base plate and paired with blanking punches one by one;

[0010] The number of lifting platforms is the same as the number of blanking dies, and they are set below each blanking die in a corresponding manner.

[0011] Preferably, the guide assembly includes a guide sleeve fixed to the base plate, a guide post adapted to the guide sleeve and fixed to the top plate, and a buffer spring fitted on the guide post with its lower end opposite to the port of the guide sleeve.

[0012] Preferably, the template group further includes a lower template, which has receiving holes that are the same number as the blanking punches; the lower template is located below the upper template and is fixedly assembled with the upper template, and its blanking holes are fitted onto each blanking punch in a one-to-one correspondence.

[0013] Preferably, the upper template has multiple mounting holes, each with an axially movable connecting rod. A return spring is provided between each connecting rod and the upper template, providing elastic support and a reset capability. A blanking punch is connected to each connecting rod in a corresponding manner. Each blanking punch has a first inclined surface at its contact point with the connecting rod. When the return spring is in its natural state, the blanking punch retracts into the receiving hole of the lower template under the action of the return spring. The driving mechanism includes a driving component and a movable block. The driving component is connected to the movable block to drive the movable block to extend and retract towards the first inclined surface. A second inclined surface is provided at one end of the movable block near the first inclined surface. This second inclined surface is vertically opposite to the first inclined surface and has an opposite inclination direction. When the movable block extends and retracts, the second inclined surface cooperates with the first inclined surface to drive the connecting rod to move axially.

[0014] Preferably, a guide slide is provided between the upper template and the lower template, arranged along the inclined direction of the first inclined surface, and the movable block is located in the guide slide.

[0015] Preferably, the template assembly further includes an intermediate template located between the upper template and the lower template, and a guide slide is provided on the intermediate template; the driving component includes a cylinder, which is fixed to the side of the intermediate template, and its piston rod is connected to the movable block.

[0016] Preferably, the system further includes a conveyor located on one side of the line connecting the lifting platforms, with its conveying surface spanning across each lifting platform.

[0017] Preferably, each lifting platform is provided with a pushing mechanism on the side away from the conveyor. The pushing mechanism includes a pushing block and a driving cylinder that drives the pushing block to move in the direction of the conveyor.

[0018] Preferably, the lifting platform includes a pallet and a power mechanism for driving the pallet to move up and down.

[0019] In this invention, by setting at least two alternating unloading punches and their corresponding lifting platforms, when the stacking at one unloading station reaches a predetermined thickness or quantity, it can automatically switch to another station to continue unloading, thereby realizing continuous unloading and stacking of heat exchanger plates. This not only ensures the uninterrupted operation of the production line, but also improves production efficiency and automation level, effectively solving the efficiency bottleneck problem caused by machine stoppage and stacking in traditional single-station production. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the upper mold in a continuous material feeding and stacking device proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the upper mold in a continuous material feeding and stacking device proposed in this utility model; Detailed Implementation

[0022] Reference Figure 1-2 This utility model discloses a continuous material unloading and stacking device, comprising: an upper mold, a lower mold, and a liftable lifting platform 1, wherein:

[0023] The upper mold and the lower mold are set opposite each other and connected by a guide assembly. The guide assembly includes a guide sleeve fixed on the base plate 6, a guide post adapted to the guide sleeve and fixed on the top plate 2, and a buffer spring fitted on the guide post with its lower end opposite to the port of the guide sleeve.

[0024] The upper die includes a top plate 2, a template group 3, and at least two blanking punches 4. The template group 3 is located below the top plate 2 and is fixedly assembled with the top plate 2. The template group 3 includes an upper template 31. All blanking punches 4 are sequentially installed on the upper template 31, and each blanking punch 4 is equipped with a drive mechanism 5 for driving its vertical extension and retraction. The lower die includes a base plate 6 and blanking dies 7 installed on the base plate 6 and paired with each blanking punch 4. The number of lifting platforms 1 is the same as the number of blanking dies 7, and they are arranged below each blanking die 7 in a corresponding manner.

[0025] The lifting platform 1 includes a pallet and a power mechanism for driving the pallet to move up and down. The number of lifting platforms 1 is the same as the number of blanking dies 7, and they are arranged one-to-one below each blanking die 7.

[0026] During operation, one of the two blanking punches 4 enters the working state under the action of the corresponding drive mechanism 5, cooperating with the corresponding blanking die 7 to punch the continuously fed strip, so that the workpiece punched off the strip falls directly from the corresponding blanking die 7 onto the lifting platform 1. As the working time continues, when the workpieces falling onto the lifting platform 1 are stacked to a predetermined thickness or quantity, the blanking punch 4 stops working, and the other blanking punch 4 enters the working state under the drive of the corresponding drive mechanism 5, thus realizing the continuous blanking operation without stopping the production line.

[0027] In a further implementation, in order to enable the blanking punch 4 in this embodiment to work in conjunction with other forming dies to form a progressive die, the die structure of this embodiment also includes a lower template 32, wherein:

[0028] The lower template 32 has a number of receiving holes matching the number of blanking punches 4. The lower template 32 is located below the upper template 31 and is fixedly assembled with the upper template 31. Its blanking holes are fitted one-to-one onto each blanking punch 4. During operation, the working end of the blanking punch 4 in the non-working state is located within the corresponding receiving hole to avoid interfering with the forming operations of other stations. When a blanking punch 4 needs to perform a stamping operation, it is driven by the matching drive mechanism 5 to extend the blanking punch 4 from its corresponding receiving hole to complete the blanking process.

[0029] Specifically: The upper template 31 is provided with multiple mounting holes, and each mounting hole is provided with an axially movable connecting rod. Each connecting rod is provided with a return spring between itself and the upper template 31, and the return spring provides elastic support and return capability for the connecting rod. The blanking punch 4 is connected to each connecting rod in a one-to-one correspondence. Each blanking punch 4 is provided with a first inclined surface a at the joint with the connecting rod. When the return spring is in its natural state, the blanking punch 4 is retracted into the receiving hole of the lower template 32 under the action of the return spring. That is, when working, the blanking punch 4 in the non-working state is kept in the retracted state under the action of the return spring, and its working end is located in the corresponding receiving hole.

[0030] The drive mechanism 5 includes a drive component 51 and a movable block 52. The drive component 51 is connected to the movable block 52 to drive the movable block 52 to extend and retract towards the first inclined surface a. The movable block 52 has a second inclined surface b at one end near the first inclined surface a. The second inclined surface b is vertically opposite to the first inclined surface a and has the opposite inclination direction. When the movable block 52 extends and retracts, it can drive the connecting rod to move axially through the cooperation of the second inclined surface b and the first inclined surface a. In operation, when a blanking punch 4 needs to perform a stamping operation, the drive component 51 in the drive mechanism 5 drives the movable block 52 to extend horizontally towards the first inclined surface a, so that the second inclined surface b at the front end of the movable block 52 cuts into the first inclined surface a and slides along the first inclined surface a, thereby forcing the connecting rod and the blanking punch 4 fixed to it to move vertically downward axially, so that the blanking punch 4 overcomes the spring force of the return spring and extends out of its corresponding receiving hole to complete the blanking. When the blanking punch 4 needs to be switched to a non-working state, the drive component 51 drives the movable block 52 to retract, so that the second inclined surface b disengages from the first inclined surface a. At this time, the connecting rod and the blanking punch 4 immediately retract upward to the initial retracted state under the elastic reset action of the return spring.

[0031] In a further embodiment, the template group 3 also includes an intermediate template 33 located between the upper template 31 and the lower template 32. The intermediate template 33 is provided with a guide slide arranged along the inclined direction of the first inclined surface a. The movable block 52 is located within the guide slide; the driving component 51 includes a cylinder, which is fixed to the side of the intermediate template 33, and its piston rod is connected to the movable block 52. This structure design allows the movable block 52 to be precisely constrained within the slide for directional sliding, ensuring the stability and centering of the movable block 52 during horizontal telescopic movement, and preventing transmission jamming or uneven wear of the inclined surface caused by the misalignment of the movable block 52. At the same time, by directly fixing the cylinder as the driving component 51 to the side of the intermediate template 33 and rigidly connecting it to the movable block 52, a modular driving unit with high integration, good rigidity, and easy assembly is formed.

[0032] As can be seen from the above, by setting at least two alternating blanking punches 4 and their corresponding lifting platforms 1, this utility model can automatically switch to another station to continue blanking when the blanking station reaches a predetermined thickness or quantity, thereby realizing continuous blanking and stacking of heat exchanger plates. This not only ensures the uninterrupted operation of the production line, but also improves production efficiency and automation level, effectively solving the efficiency bottleneck problem caused by machine stoppage and stacking in traditional single-station production.

[0033] Furthermore, this utility model provides a continuous material feeding and stacking device, which also includes a conveyor 9 and a pushing mechanism 8. The conveyor 9 (such as a belt conveyor or roller conveyor) is positioned on one side of the line connecting each lifting platform 1, and its conveying surface width (such as the width of the conveyor belt of a belt conveyor or the effective width of the roller conveying surface of a roller conveyor) spans across each lifting platform 1, enabling it to receive material stacks from any lifting platform 1. The number of pushing mechanisms 8 is the same as the number of lifting platforms 1, and they are correspondingly positioned on the side of each lifting platform 1 away from the conveyor 9. Each pushing mechanism 8 includes a pushing block and a driving cylinder that drives the pushing block to move towards the conveyor 9. When the thickness or quantity of a material stack on any lifting platform 1 reaches a preset value, the corresponding pushing mechanism 8 pushes the entire stack of material on that lifting platform 1 onto the conveyor 9 for transport.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A continuous material feeding and stacking device, characterized in that, include: Upper mold, lower mold, and a liftable platform (1), wherein: The upper mold and the lower mold are set opposite each other and connected by a guide assembly; the upper mold includes a top plate (2), a template group (3), and at least two blanking punches (4); the template group (3) is located below the top plate (2) and is fixedly assembled with the top plate (2), and the template group (3) includes an upper template (31); all blanking punches (4) are sequentially installed on the upper template (31), and each blanking punch (4) is equipped with a drive mechanism (5) for driving its up and down extension; The lower die includes a base plate (6) and a blanking die (7) mounted on the base plate (6) and paired with the blanking punch (4); The number of lifting platforms (1) is the same as the number of blanking dies (7), and they are set below each blanking die (7) in a corresponding manner.

2. The continuous material feeding and palletizing device according to claim 1, characterized in that, The template group (3) also includes a lower template (32), which has a number of receiving holes that are the same as the number of blanking punches (4). The lower template (32) is located below the upper template (31) and is fixedly assembled with the upper template (31). Its blanking holes are fitted onto each blanking punch (4) in a one-to-one correspondence.

3. The continuous material feeding and palletizing device according to claim 2, characterized in that, The upper template (31) is provided with multiple mounting holes, and each mounting hole is provided with an axially movable connecting rod. Each connecting rod is provided with a return spring between itself and the upper template (31), and the return spring provides elastic support and return capability for the connecting rod. The blanking punch (4) is connected to each connecting rod in a corresponding manner. Each blanking punch (4) is provided with a first inclined surface (a) at the contact point with the connecting rod. When the return spring is in its natural state, the blanking punch (4) is retracted into the receiving hole of the lower template (32) under the action of the return spring. The drive mechanism ( 5) Includes a drive component (51) and a movable block (52), wherein: the drive component (51) is connected to the movable block (52) for driving the movable block (52) to extend and retract in the direction of the first inclined surface (a); the movable block (52) has a second inclined surface (b) at one end near the first inclined surface (a), the second inclined surface (b) is vertically opposite to the first inclined surface (a) and the inclination direction is opposite, and when the movable block (52) is extending and retracting, it can drive the connecting rod to move axially through the cooperation of the second inclined surface (b) and the first inclined surface (a).

4. The continuous material feeding and palletizing device according to claim 3, characterized in that, A guide slide is provided between the upper template (31) and the lower template (32) along the inclined direction of the first inclined surface (a), and the movable block (52) is located in the guide slide.

5. The continuous material feeding and palletizing device according to claim 4, characterized in that, The template group (3) also includes an intermediate template (33) located between the upper template (31) and the lower template (32), and a guide slide is provided on the intermediate template (33); the driving component (51) includes a cylinder, which is fixed to the side of the intermediate template (33), and its piston rod is connected to the movable block (52).

6. The continuous material feeding and palletizing device according to claim 1, characterized in that, The guide assembly includes a guide sleeve fixed on the base plate (6), a guide post adapted to the guide sleeve and fixed on the top plate (2), and a buffer spring fitted on the guide post with its lower end opposite to the port of the guide sleeve.

7. The continuous material feeding and stacking device according to any one of claims 1-6, characterized in that, It also includes setting up a conveyor (9) which is set on one side of the line connecting each lifting platform (1) and whose conveying surface width spans across each lifting platform (1).

8. The continuous material feeding and palletizing device according to claim 7, characterized in that, Each lifting platform (1) is equipped with a pushing mechanism (8) on the side away from the conveyor (9). The pushing mechanism (8) includes a pushing block and a driving cylinder that drives the pushing block to move in the direction of the conveyor (9).

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