CN103878217A - Pneumatic bending machine - Google Patents

Abstract

The invention discloses a pneumatic bending machine, comprising: a frame; a positioning device arranged on the frame for carrying products to be bent; Preloading device; a pneumatic bending device used to bend the product to be bent through telescopic movement; and electrically connected to the pneumatic preloading device and the pneumatic bending device for controlling The electric control device for the movement; the pneumatic bending device includes the bending punch, the punch seat, the positioning pin of the elastic element, the elastic element, the stroke control pin and the bending cylinder fixedly connected with the stroke control pin, and the punch seat is provided with a guide groove One end of the bending punch passes through the guide groove to face the bent product, and the other end is close to the stroke control pin; the positioning pin of the elastic element is fixed on the punch seat, and one end of the elastic element is set on the positioning pin of the elastic element, and the other end One end is against the other end of the bending punch.

Description

Pneumatic bending machine

technical field

The invention relates to the technical field of processing machinery, in particular to a pneumatic bending machine.

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Background technique

At present, the processing pressure cover frame assembly uses manual pressing of the detachable aluminum cover. This method is slow in efficiency and labor-intensive, and the quality is greatly affected by the operator's proficiency and is unstable.

Now most of the parts of various equipment are produced by various processing equipment, such as various lathes, milling machines, grinding machines and machining centers used for material removal processing, and various machines used to connect various parts Welding equipment, etc., and other painting and blackening equipment used to treat the surface of parts, etc. When parts need to be bent, we often use bending machines. According to different driving methods, they are divided into motor drive bending machines, hydraulic bending machines, pneumatic transmission machines and so on.

The motor-driven bending machine consumes a lot of energy and has low efficiency; the hydraulic bending machine has a more complicated structure and higher cost; while the existing pneumatic bending machine is driven by air pressure control cylinder, the structure is simple and the energy consumption is low , but the pressure head part of the bending part is driven by the cylinder faster, and the action is too fast, and some thin plate parts are easy to be damaged during bending.

Based on the above, we are eager to design a bending machine that can overcome the problems of the prior art to bend products such as detachable aluminum covers, thereby improving efficiency and quality.

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Contents of the invention

Aspects of the present invention provide a novel actuation bending machine for bending removable aluminum covers that overcomes the problems of the prior art, thereby improving efficiency and quality.

In order to achieve the above purpose, an embodiment of the present invention provides a pneumatic bending machine, including:

frame;

A positioning device arranged on the frame is used to carry the product to be bent;

a pneumatic preloading device, used to press the product to be bent onto the positioning device by moving up and down;

a pneumatic bending device for bending the product to be bent by telescopic movement; and

The electric control device is electrically connected with the pneumatic preloading device and the pneumatic bending device respectively, and is used to control the movement of the pneumatic preloading device and the pneumatic bending device;

Wherein, the pneumatic bending device includes a bending punch, a punch seat, an elastic element positioning pin, an elastic element, a stroke control pin, and a bending cylinder fixedly connected to the stroke control pin, and the punch seat is provided with A guide groove, one end of the bending punch passes through the guide groove to face the product to be bent, and the other end is close to the stroke control pin; the positioning pin of the elastic element is fixed on the punch seat , and one end of the elastic element is sleeved on the positioning pin of the elastic element, and the other end abuts against the other end of the bending punch;

The electronic control device controls the downward movement of the pneumatic preloading device to press the product to be bent behind the positioning device, and controls the extension of the bending cylinder to drive the stroke control pin Pressing the bending punch, the bending punch compresses the elastic element under the action of the stroke control pin and pushes the product to be bent along the guide groove to bend the Describe the product to be bent;

After the bending of the product to be bent is completed, the electric control device controls the bending cylinder to shrink, thereby driving the stroke control pin away from the bending punch. After being reset under the reverse force of the elastic element, control the upward movement of the pneumatic preloading device to loosen the product to be bent after bending.

As an improvement of the above technical solution, the product to be bent is a detachable aluminum cover, a foldable stainless steel cover, a rice cooker pressure frame assembly, an electric pressure cooker pressure frame assembly, an electromagnetic IH rice cooker or an electromagnetic IH pressure cooker pressure frame assembly.

As an improvement of the above technical solution, the positioning device is a replaceable positioning device designed according to the structure of the product to be bent.

As an improvement of the above technical solution, the pneumatic preloading device sets a preloading block between the two buckles of the product to be bent, and moves the product to be bent in the "Z" direction by moving up and down. clamping and loosening.

As an improvement of the above technical solution, the pneumatic preloading device includes a preloading cylinder, a cylinder support plate, a cylinder fixing plate and a preloading block, the cylinder supporting plate and the cylinder fixing plate are used to support and fix the preloading cylinder, The pre-pressing block is arranged under the pre-pressing cylinder, and the pre-pressing cylinder pre-presses the product to be bent by pushing the pre-pressing block.

As an improvement of the above technical solution, the elastic element is a spring.

As an improvement of the above technical solution, the electric control device is provided with a start switch and a travel switch, the start switch is used to control the up and down movement of the pneumatic preloading device; the travel switch is used to control the pneumatic bending Telescopic movement of the device.

As an improvement of the above technical solution, the bending cylinder is fixed on the frame through a cylinder fixing seat.

As an improvement of the above technical solution, four casters are provided under the frame, two of which have brakes.

As an improvement of the above technical solution, the telescopic length of the bending punch can be adjusted through the screw on the bending cylinder, and the bending time of the bending punch for the product to be bent is controlled by the electric motor. time controller adjustment on the control unit.

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Compared with the prior art, the pneumatic bending machine disclosed by the present invention has the following beneficial effects:

1. The product is bent by a pneumatic bending machine, which can improve the efficiency compared with manual pressing, and the quality is stable and the labor intensity is improved;

2. The bending punch presses the product along the direction of the guide groove of the punch seat to bend the product. The guiding property is good, so as to ensure the bending effect, especially suitable for bending the detachable aluminum cover of the electric rice cooker;

3. The elastic element set between the punch seat and the bending punch can not only effectively slow down the movement of the cylinder (bending punch), so that the bending work is softer and the parts are not easy to be damaged; After the bending is completed, the bending punch can be effectively reset.

Description of drawings

Fig. 1 is a schematic structural view of a pneumatic bending machine in an embodiment of the present invention;

Fig. 2 is a top view of a pneumatic bending machine in the embodiment of the present invention shown in Fig. 1;

Fig. 3 is a partial sectional view of a pneumatic bending machine in the embodiment of the present invention shown in Fig. 1, showing the structure of the pneumatic bending device;

Figures 4 to 5 show two types of structures of the bending punches of the pneumatic bending device shown in Figure 3 .

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Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Referring to Figures 1 to 2, the present invention discloses a pneumatic bending machine, which includes a frame 1, a positioning device 2, a pneumatic preloading device 3, a pneumatic bending device 4 and an electric control device 5, wherein:

The positioning device 2 is arranged on the frame 1 for carrying the product to be bent;

The pneumatic preloading device 3 is used to press the product to be bent onto the positioning device by moving up and down;

The pneumatic bending device 4 is used to bend the product to be bent through telescopic movement; and

The electric control device 5 is electrically connected with the pneumatic preloading device 3 and the pneumatic bending device 4 respectively, and is used to control the movement of the pneumatic preloading device 3 and the pneumatic bending device 4 .

Specifically, referring to FIG. 3 , the pneumatic bending device 4 includes a bending punch 41, a punch seat 42, an elastic element positioning pin 43, an elastic element 44 (preferably a spring), a stroke control pin 45, and The bending cylinder 46 fixedly connected to the control pin 45, the punch seat 42 is provided with a guide groove, and one end 411 of the bending punch 41 passes through the guide groove to face the product to be bent, and the other end 412 is close to the stroke control pin 45; the elastic element positioning pin 43 is fixed on the punch seat 42, and one end 441 of the elastic element 44 is sleeved on the elastic element positioning pin 43, and the other end 442 is connected to the elastic element positioning pin 43. The other end 412 of the bending punch 41 is against the top. The bending cylinder 46 is fixed on the frame through the cylinder fixing seat 461 .

The electronic control device 5 controls the downward movement of the pneumatic preloading device 3 to press the product to be bent against the positioning device 2, and controls the bending cylinder 46 to elongate, thereby driving the The stroke control pin 45 presses the bending punch 41, and the bending punch 41 compresses the elastic element 44 under the action of the stroke control pin 45 and moves along the guide groove toward the bending punch 41. Bending product pushes to bend the product to be bent;

After the bending of the product to be bent is completed, the bending cylinder 46 is controlled to shrink, so as to drive the stroke control pin 45 away from the bending punch 41, and the bending punch 41 is positioned on the elastic element. After reset under the reverse force of 44, control the upward movement of the pneumatic preloading device 3 to loosen the product to be bent after bending.

Preferably, the present invention is especially suitable for bending products such as detachable aluminum lids of electric rice cookers.

The positioning device 2 can be fixed on the frame, or can be a replaceable positioning device designed according to the structure of the product to be bent.

The pneumatic preloading device 3 sets a preloading device between the two buckles of the product to be bent, and clamps and loosens the product to be bent in the "Z" direction by moving up and down . Specifically, the pneumatic preloading device 3 includes a preloading cylinder, a cylinder support plate, a cylinder fixing plate and a preloading block. The cylinder supporting plate and the cylinder fixing plate are used to support and fix the preloading cylinder. The pressing block is arranged under the pre-pressing cylinder, and the pre-pressing cylinder pre-presses the product to be bent by pushing the pre-pressing block.

Preferably, there are multiple pneumatic bending devices, and the specific number is determined according to the structure of the product to be bent (the number of bending buckles). In this embodiment, there are 12, wherein the 12 pneumatic bending devices The surface of one end of the 10 bending punches facing the product to be bent is a plane, and the surface of the other two bending punches facing the product to be bent is a stepped surface. Figures 4 to 5 specifically show the structures of the above two different types of bending punches. It can be understood that the structure of the bending punches is specifically designed according to the structure of the product to be bent.

In addition, the electric control device 5 is provided with a start switch (button) and a travel switch (button), the start switch is used to control the up and down movement of the pneumatic preloading device; the travel switch is used to control the pneumatic Telescopic movement of the bending device.

The bottom of the frame 1 is provided with four casters, two of which have brakes for easy promotion and fixing.

The telescopic length of the bending punch 41 can be adjusted by the screw on the bending cylinder 46, and the bending time of the bending punch 41 on the product to be bent is passed on the electronic control device 5. time controller adjustment.

The operating principle of the pneumatic bending machine of the present invention is as follows:

When the air pipe and power supply on the pneumatic bending machine are connected, the product to be bent is first placed on the positioning device 2, and then the start switch (button) on the electric control device 5 is pressed to prompt the pneumatic preliminary The pressing device 3 moves downward to press the product to be bent onto the positioning device 2 . Then, continue to press the stroke switch (button) on the electric control device 5 to impel the pneumatic bending device to move. The specific process is: the bending cylinder 46 is extended, thereby driving the stroke control pin 45 to press the The bending punch 41, the bending punch 41 compresses the elastic element 44 under the action of the stroke control pin 45 and pushes the product to be bent along the guide groove to bend The product to be bent;

After the bending of the product to be bent is completed, control the bending cylinder 46 to shrink (there are two specific ways, the first is automatic shrinking, and the bending time is controlled by the time controller on the electronic control device 5, and the bending time After the time is up, the bending cylinder 46 is automatically controlled to shrink; the other is to manually press the start switch (button) on the electronic control device 5 to prompt the pneumatic preloading device 3 to shrink after the bending is completed. ), so as to drive the stroke control pin 45 away from the bending punch 41, and after the bending punch 41 resets under the reverse force of the elastic element 44, the pneumatic preloading device 3 is controlled upward movement to loosen the product to be bent which has been bent, and the bending process of the product to be bent has been completed so far.

The above description is a preferred embodiment of the present invention, and it should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also considered Be the protection scope of the present invention.

Claims (10)

1. A pneumatic bending machine, characterized in that, comprising: frame; A positioning device arranged on the frame is used to carry the product to be bent; a pneumatic preloading device, used to press the product to be bent onto the positioning device by moving up and down; a pneumatic bending device for bending the product to be bent by telescopic movement; and The electric control device is electrically connected with the pneumatic preloading device and the pneumatic bending device respectively, and is used to control the movement of the pneumatic preloading device and the pneumatic bending device; Wherein, the pneumatic bending device includes a bending punch, a punch seat, an elastic element positioning pin, an elastic element, a stroke control pin, and a bending cylinder fixedly connected to the stroke control pin, and the punch seat is provided with A guide groove, one end of the bending punch passes through the guide groove to face the product to be bent, and the other end is close to the stroke control pin; the positioning pin of the elastic element is fixed on the punch seat , and one end of the elastic element is sleeved on the positioning pin of the elastic element, and the other end abuts against the other end of the bending punch; The electronic control device controls the downward movement of the pneumatic preloading device to press the product to be bent behind the positioning device, and controls the extension of the bending cylinder to drive the stroke control pin Pressing the bending punch, the bending punch compresses the elastic element under the action of the stroke control pin and pushes the product to be bent along the guide groove to bend the Describe the product to be bent; After the bending of the product to be bent is completed, the bending cylinder shrinks, thereby driving the stroke control pin away from the bending punch, and the bending punch acts on the opposite force of the elastic element After the lower reset, the pneumatic preloading device is controlled to move upward to loosen the product to be bent after bending. 2. The pneumatic bending machine according to claim 1, wherein the product to be bent is a detachable aluminum cover, a foldable stainless steel cover, a rice cooker pressure frame assembly, an electric pressure cooker pressure frame assembly, an electromagnetic IH rice cooker or Induction IH pressure cooker pressure frame assembly. 3. The pneumatic bending machine according to claim 2, wherein the positioning device is a replaceable positioning device designed according to the structure of the product to be bent. 4. The pneumatic bending machine according to claim 1, characterized in that, the pneumatic preloading device sets a preloading block between the two buckles of the product to be bent, and moves up and down to The product to be bent is clamped and released in the "Z" direction. 5. The pneumatic bending machine according to claim 4, wherein the pneumatic preloading device comprises a preloading cylinder, a cylinder supporting plate, a cylinder fixing plate and a preloading block, and the cylinder supporting plate and the cylinder fixing plate Used to support and fix the pre-press cylinder, the pre-press block is arranged under the pre-press cylinder, and the pre-press cylinder pre-presses the product to be bent by pushing the pre-press block. 6. The pneumatic bending machine according to claim 1, wherein the elastic element is a spring. 7. The pneumatic bending machine according to claim 1, wherein the electric control device is provided with a start switch and a travel switch, and the start switch is used to control the up and down movement of the pneumatic preloading device; The travel switch is used to control the telescopic movement of the pneumatic bending device. 8. The pneumatic bending machine according to claim 1, wherein the bending cylinder is fixed on the frame through a cylinder fixing seat. 9. The pneumatic bending machine according to claim 1, wherein four casters are arranged under the frame, two of which have brakes. 10. The pneumatic bending machine according to claim 1, wherein the telescopic length of the bending punch can be adjusted by the screw on the bending cylinder, and the bending punch is The bending time of the bent product is adjusted by the time controller on the electric control device.

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