Efficient punch forming device for cup bottom of vacuum cup

Abstract

The invention relates to an efficient vacuum cup bottom punch forming device. The device comprises a punching machine, a lower die and an upper die, and further comprises a machine base, a horizontal rotating disc, two carrying assemblies and a feeding assembly. Three mounting holes which are distributed in a circumferential array and are vertically through are formed in the horizontal rotating disc, sliding seats are assembled in the mounting holes in a vertical sliding mode, a lower die is fixed to the upper side of each sliding seat, a hydraulic lifting device is arranged on the portion, located in the lower side area of the upper die, of the machine base, and a positioning rod which can stretch and retract vertically is arranged on the hydraulic lifting device; and a positioning hole matched with the top of the positioning rod is formed in the bottom of the sliding seat. According to the invention, the original three working procedures of feeding, die pressing forming and blanking which are carried out in sequence are changed into three working procedures which are carried out synchronously, so that the time required for producing a single cup bottom is changed into the time required for a single working procedure from the sum of the original time required for the three working procedures, and the time consumed for producing a single product can be obviously saved; therefore, the production efficiency of products can be obviously improved.

Description

Technical Field

[0001] The present invention relates to a stamping device, and more particularly to an efficient stamping device for the bottom of a heat-insulated cup. Background Art

[0002] In the production process of stainless steel heat-insulated cups, the cup body and the cup bottom are formed separately and then connected together by a welding process. The raw material for the cup bottom is a circular stainless steel sheet. Currently, the mainstream cup bottom forming process in the heat-insulated cup production industry is as follows: The lower die of the stamping die is automatically fed by a handling mechanism, and then the punch press is used to realize the downward pressing and resetting process of the upper die. Then, the completed stamped cup bottom is taken away by blowing or a handling mechanism. The production time for stamping a single cup bottom includes the feeding time, the downward pressing and resetting time of the punch press, and the discharging time. Among them, the proportion of the downward pressing and resetting time of the punch press is relatively short, and most of the time is spent on feeding and discharging. However, currently, automated equipment is also used for feeding and discharging, and there is also an upper limit to reducing the time required for the automated equipment to load and unload. The faster the automated equipment operates, the more difficult it is to control its accuracy and working stability. Therefore, it is very difficult to significantly improve the production efficiency of the cup bottom forming process at present. Summary of the Invention

[0003] The present invention provides an efficient stamping device for the bottom of a heat-insulated cup, which solves the problem that it is very difficult to significantly improve the production efficiency of cup bottom forming in the prior art.

[0004] The above technical problems of the present invention are mainly solved by the following technical solutions: An efficient stamping and forming device for the bottom of a heat-insulating cup, comprising a punching press, a lower die and an upper die located on the punching press, and further comprising a machine base fixed relative to the punching press, a horizontal turntable located on the machine base, two handling components located on the machine base, and a feeding component located on the machine base; three mounting holes that are circumferentially arrayed and penetrate up and down are provided on the horizontal turntable, a sliding seat is slidably assembled up and down in the mounting hole, and the lower die is fixed on the upper side of each sliding seat. A hydraulic lifting device is provided on the machine base and in the lower side area of the upper die, and a positioning rod that can be telescopically extended and retracted is provided on the hydraulic lifting device. A positioning hole adapted to the top of the positioning rod is provided at the bottom of the sliding seat; a loading station, a stamping station and an unloading station are provided on the horizontal turntable, and each station corresponds to a lower die; one set of handling components can transfer the stamping material on the feeding component to the lower die in the loading station, and the other set of handling components can take away the stamped parts on the lower die in the unloading station. The positioning rod in the present invention can be used to accurately position the lower die in the stamping station. Whenever the horizontal turntable rotates, the hydraulic lifting device will separate the positioning rod from the positioning hole completely in advance. After the horizontal turntable completes the rotation, the hydraulic lifting device pushes the positioning rod upward again to make it completely inserted and matched with the corresponding positioning hole, so that the position of the lower die can be accurately positioned; at the same time, the positioning rod also plays a role in supporting the lower die. When the dies are closed, the pressure received by the lower die is completely borne by the positioning rod, which requires the pressure value of the hydraulic lifting device to be not lower than the downward pressure of the upper die.

[0005] The working principle of the present invention is as follows: The loading station, the stamping station and the unloading station work synchronously. Among them, the loading station transfers the circular stainless steel sheet on the feeding component to the lower die corresponding to the loading station through the handling components, the stamping station drives the upper die to press down and reset through the punching press, and the unloading station takes away the bottom parts of the cup on the lower die in the corresponding station through the handling components; when the corresponding processes in the three stations are all completed, the horizontal turntable rotates 120 degrees, and the positions of the three lower dies on it will be switched once. In this way, the lower die in the original unloading station is transferred to the loading station, and this lower die is in an empty state, the lower die in the original loading station is transferred to the stamping station, and the lower die in the original stamping station is transferred to the unloading station.

[0006] The biggest difference between the present invention and the prior art is that the three processes of loading, die pressing and forming, and unloading, which were originally carried out in sequence, are changed to be carried out synchronously. Therefore, the time required to produce a single bottom of the cup changes from the sum of the times required for the original three processes to the time required for a single process. Of course, this single process is the one that takes the most time among the three processes.

[0007] Further, the handling assembly includes a lifting mechanism fixed to the machine base, a lifting seat driven by the lifting mechanism, a rotating mechanism disposed on the lifting seat, and a swing rod driven by the rotating mechanism. A suction cup is provided at the end of the swing rod, and the suction cup is connected to negative pressure through an air circuit. The handling operation of the handling assembly is as follows: The rotating mechanism drives the swing rod to rotate, so that the suction cup on the swing rod moves directly above the station to be handled. Then, the lifting mechanism controls the lifting seat to descend, so that the suction cup contacts the product to be handled. The suction cup is connected to negative pressure to generate an adsorption effect. Then, the lifting mechanism controls the lifting seat to reset. The rotating mechanism drives the swing rod to rotate again, so that the product is transferred to another station. Then, the lifting mechanism controls the lifting seat to descend again. The suction cup is disconnected from the negative pressure, the suction cup loses suction, and the product is separated from it. Finally, the lifting mechanism controls the lifting seat to reset again.

[0008] Further, the feeding assembly includes a servo electric cylinder vertically fixed to the machine base, a support plate fixed to the telescopic rod of the servo electric cylinder, and a plurality of limiting rods vertically arranged around the support plate. The limiting rods define a constraint cavity for stacking wafers, and a sensor is provided on the upper side of the constraint cavity. The working principle of the feeding assembly is as follows: Workers stack a certain number of stainless steel wafers into the constraint cavity. The limiting rods can constrain the stainless steel wafers to maintain a neatly stacked state. When the uppermost stainless steel wafer is taken away, the height of the stacked stainless steel wafers decreases. After the sensor detects it, it will trigger a compensation action. The servo electric cylinder starts and pushes the support plate to move upward a fixed distance to keep the height of the stainless steel wafers always within the height range that can be taken away by the handling assembly.

[0009] Further, a gap is formed between the mounting hole and the sliding seat. When the positioning rod is engaged with the positioning hole, the sliding seat may undergo a small displacement. The existence of this gap prevents the sliding seat from interfering with the horizontal turntable.

[0010] Therefore, the present invention has the following characteristics compared with the prior art: 1. The present invention changes the three processes of feeding, die pressing and forming, and blanking, which were originally carried out in sequence, into three processes carried out simultaneously. Therefore, the time required to produce a single cup bottom changes from the sum of the times required for the original three processes to the time required for a single process, which can significantly save the time consumed in producing a single product, and thus can significantly improve the production efficiency of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] FIG. Figure 1 is a schematic view of a partial structure of the present invention;

[0012] FIG. Figure 2 is a top view sketch of the present invention;

[0013] FIG. Figure 3 is a schematic view of the structure of the handling assembly;

[0014] Attached Figure 4 is a schematic structural diagram of the feeding component. Specific embodiments

[0015] The technical solution of the present invention will be further specifically described below through embodiments in conjunction with the accompanying drawings.

[0016] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention 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 invention.

[0017] Example 1: See Figure 1 and Figure 2 , an efficient stamping forming device for the bottom of a heat-insulated cup, including a punching press 100, a lower die 110 and an upper die 120 located on the punching press, and further including a machine base 200 fixed relative to the punching press, a horizontal turntable 300 located on the machine base, two handling components 400 located on the machine base, and a feeding component 500 located on the machine base; three mounting holes 310 that are circumferentially arrayed and penetrate up and down are provided on the horizontal turntable, a sliding seat 320 is slidably assembled up and down in the mounting hole, a lower die is fixed on the upper side of each sliding seat, a hydraulic lifting device 600 is provided in the area below the upper die on the machine base, a positioning rod 610 that can be telescoped up and down is provided on the hydraulic lifting device, and a positioning hole 330 adapted to the top of the positioning rod is provided at the bottom of the sliding seat; a loading station, a stamping station and an unloading station are provided on the horizontal turntable, and each station corresponds to a lower die; a set of handling components can transfer the stamping material on the feeding component onto the lower die in the loading station, and another set of handling components can take away the stamped parts on the lower die in the unloading station. The positioning rod in this embodiment can be used to accurately position the position of the lower die in the stamping station. Whenever the horizontal turntable rotates, the hydraulic lifting device will separate the positioning rod from the positioning hole in advance. After the horizontal turntable completes rotation, the hydraulic lifting device pushes the positioning rod upward again to make it completely inserted and matched with the corresponding positioning hole, so that the position of the lower die can be accurately positioned; at the same time, the positioning rod also plays a role in supporting the lower die. When the dies are closed, the pressure received by the lower die is completely borne by the positioning rod, which requires the pressure value of the hydraulic lifting device to be not lower than the downward pressure of the upper die.

[0018] The working principle of this embodiment is as follows: The loading station, stamping station, and unloading station work synchronously. Among them, the loading station transfers the circular stainless steel sheets on the feeding component to the lower die corresponding to the loading station through the handling component. The stamping station drives the upper die to press down and reset through the punching press. The unloading station takes away the cup bottom parts on the lower die in the corresponding station through the handling component. When the corresponding processes in all three stations are completed, the horizontal turntable rotates 120 degrees, and the positions of the three lower dies on it will switch once. In this way, the lower die in the original unloading station is transferred to the loading station, and this lower die is in an empty state. The lower die in the original loading station is transferred to the stamping station, and the lower die in the original stamping station is transferred to the unloading station.

[0019] The biggest difference between this embodiment and the prior art is that the three processes of loading, die pressing and forming, and unloading, which were originally carried out in sequence, are changed to be carried out synchronously. Therefore, the time required to produce a single cup bottom changes from the sum of the times required for the original three processes to the time required for a single process. Of course, this single process is the one that consumes the most time among the three processes.

[0020] See Figure 2 , the handling component includes a lifting mechanism 410 fixed on the machine base, a lifting seat 420 driven by the lifting mechanism, a rotating mechanism 430 arranged on the lifting seat, and a swing rod 440 driven by the rotating mechanism. A suction cup 450 is provided at the end of the swing rod. The suction cup is connected to the negative pressure through an air circuit. The lifting mechanism is specifically a cylinder, and the rotating mechanism is specifically a rotary cylinder. The handling action of the handling component is as follows: The rotating mechanism drives the swing rod to rotate, so that the suction cup on the swing rod moves directly above the station to be handled. Then the lifting mechanism controls the lifting seat to descend, so that the suction cup contacts the product to be handled. The suction cup is connected to the negative pressure to generate an adsorption effect. Then the lifting mechanism controls the lifting seat to reset. The rotating mechanism drives the swing rod to rotate again, so that the product is transferred to another station. Then the lifting mechanism controls the lifting seat to descend again. The suction cup is disconnected from the negative pressure, the suction cup loses suction, and the product is separated from it. Finally, the lifting mechanism controls the lifting seat to reset again.

[0021] See Figure 4The feeding assembly includes a servo electric cylinder 510 vertically fixed on the machine base, a support plate 520 fixed on the telescopic rod of the servo electric cylinder, and a plurality of limit rods 530 vertically arranged on the periphery of the support plate. The limit rods constrain a constraint cavity 540 for stackable discs. The upper end of the limit rods is set outward, and a sensor 550 is arranged on the upper side of the constraint cavity. The working principle of the feeding assembly is as follows: the worker puts a certain number of stainless steel discs into the constraint cavity in a stacked manner. The limit rods can constrain the stainless steel discs to maintain a neatly stacked state. When the stainless steel discs on the upper side are taken away, the height of the stack of stainless steel discs decreases. After the sensor detects it, it triggers a compensation action, the servo electric cylinder starts, and pushes the support plate upward to move a fixed distance to keep the height of the stainless steel discs always within the height range that can be taken away by the handling assembly.

[0022] See Figure 1 A gap is formed between the mounting hole and the sliding seat, and the width of the gap is between 1 and 3 mm. When the positioning rod is matched with the positioning hole, the sliding seat may produce a small displacement. The existence of the gap prevents the sliding seat from interfering with the horizontal turntable.

[0023] See Figure 3 The transport assembly also includes two guide rods 460 fixed on the machine base, the lifting seat is sleeved with the guide rods, and an upper limit block 470 and a lower limit block 480 are respectively provided on the guide rods and located on the upper and lower sides of the lifting seat.

[0024] See Figure 1 A stepper motor 700 is arranged on the machine base, and the horizontal turntable is drivingly connected to the output shaft of the stepper motor.

[0025] See Figure 1 The head of the positioning rod is set in a cone shape to play a guiding role.

[0026] The present invention can be modified in various ways which are obvious to those skilled in the art, and such modifications are not considered to depart from the scope of the present invention. All such modifications which are obvious to those skilled in the art are intended to be included within the scope of the present claims.

Claims

1. An efficient thermos cup bottom punching and forming device, comprising a punch press and a lower die and an upper die located on the punch press, characterized in that: It also includes a machine base fixed relative to the punch press, a horizontal turntable located on the machine base, two conveying components located on the machine base and a feeding component located on the machine base; the horizontal turntable is provided with three mounting holes distributed in a circumferential array and penetrating up and down, a sliding seat is assembled in the mounting hole to slide up and down, the lower mold is fixed on the upper side of each sliding seat, a hydraulic lifting device is provided on the machine base and in the lower area of ​​the upper mold, the hydraulic lifting device is provided with a positioning rod which can be extended up and down, and a positioning hole is provided at the bottom of the sliding seat which is adapted to the top of the positioning rod; a loading station, a stamping station and a unloading station are provided on the horizontal turntable, and each station corresponds to a lower mold; one group of conveying components can transfer the stamping material on the feeding component to the lower mold in the loading station, and another group of conveying components can take away the stamping parts on the lower mold in the unloading station.

2. The high-efficiency thermos cup bottom punching and forming device according to claim 1 is characterized in that: The transport assembly comprises a lifting mechanism fixed on the machine base, a lifting seat driven by the lifting mechanism, a rotating mechanism arranged on the lifting seat, and a swing rod driven by the rotating mechanism, wherein a suction cup is arranged at the end of the swing rod.

3. The high-efficiency thermos cup bottom punching and forming device according to claim 1 is characterized in that: The feeding assembly includes a servo electric cylinder vertically fixed on the machine base, a support plate fixed on the telescopic rod of the servo electric cylinder, and a plurality of limit rods vertically arranged on the periphery of the support plate. The limit rods constrain a constraint cavity for stackable wafers, and a sensor is provided on the upper side of the constraint cavity.

4. The high-efficiency thermos cup bottom punching and forming device according to claim 1 is characterized in that: A gap is formed between the mounting hole and the sliding seat.

5. The high-efficiency thermos cup bottom punching and forming device according to claim 2 is characterized in that: The transport assembly also includes two guide rods fixed on the machine base, the lifting seat is sleeved with the guide rods, and an upper limit block and a lower limit block are respectively provided on the guide rods and located on the upper and lower sides of the lifting seat.

6. The high-efficiency thermos cup bottom punching and forming device according to claim 1 is characterized in that: A stepping motor is arranged on the machine base, and the horizontal turntable is drivingly connected to the output shaft of the stepping motor.

7. The high-efficiency thermos cup bottom punching and forming device according to claim 1 is characterized in that: The head of the positioning rod is arranged in a cone shape.

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