TWM524250U - Punching device and insulated PE bag for battery formed by the device - Google Patents

Abstract

A punching device and insulated PE bag for battery formed by the device, in which the punching device comprises a baseboard, a first cylinder, a second cylinder, a pressing mechanism and a punching mechanism, the baseboard comprises a plurality of receiving holes, the pressing mechanism comprises a lower plate and an upper plate, the lower plate has a plurality of first through holes corresponding to the receiving holes, the upper plate also has a plurality of second through holes corresponding to the receiving holes, the punching mechanism comprises punching needles and a fixing plate to fix the punching needles, when the punching device is in a initial state, the pressing mechanism moves toward the baseboard until the lower plate presses punching item, and when the pressing mechanism is in the a compressed state, the punching mechanism moves toward the baseboard until the punching needles pass through the second through holes and the first through holes, and then the punching needles form punching holes on the punching item. The utility model can prevent the punching item from shifting by pressing the punching item.

Description

Punching device and battery insulated PE bag formed by using the same

The present invention relates to a punching device, and in particular to a punching device and a battery insulated PE bag formed using the device.

At present, the formation process in the cell core process uses the battery in a PE bag, and after the electrolyte is injected through the injection hole, the electrolyte flows into the PE bag to wet the battery, and the PE bag is punched through the hole, and the electrolyte can be timely Fully entering the inside of the battery, the prior art has a complicated structure for punching the PE bag, and the punching quality of the forming is not good.

The purpose of the present invention is to provide a punching device and a battery insulated PE bag formed using the device.

In order to achieve the foregoing creative object, an embodiment of the present invention provides a punching device, including a bottom plate, a first cylinder, a second cylinder, a pressing mechanism, and a punching mechanism, wherein the bottom plate has a plurality of receiving holes, and the bottom plate is used for placing The second cylinder is separated from the first cylinder; the pressing mechanism includes a lower pressing plate and an upper pressing plate, the lower pressing plate is located above the bottom plate, and the lower pressing plate has a plurality of receiving holes Corresponding plural first through holes; an upper pressing plate is located above the lower pressing plate, the upper pressing plate has a plurality of second through holes corresponding to the plurality of first through holes; the punching mechanism comprises a punching pin fixing plate and plural a punching needle, the punching pin fixing plate is located above the upper pressing plate; the plurality of punching pins are located on the punching pin fixing plate; wherein the punching device is configured to, when the punching device is in an initial state, the first a cylinder driving the pressing mechanism to move toward the bottom plate until the lower pressing plate presses the object to be punched; when the pressing mechanism is in a pressing state, the lower pressing plate is always pressed Article to be punched, the punch driving the second cylinder toward said base plate transport mechanism And the punching needle sequentially passes through the second through hole and the first through hole and forms a punching hole on the object to be punched, and the punching needle enters the receiving hole.

As a further improvement of an embodiment of the present invention, the punching device further includes a top plate and a plurality of first support columns, wherein the plurality of first support columns are fixedly connected to the top plate and the bottom plate; wherein the top plate and the plurality of a support column and the bottom plate enclose a first accommodating space, the pressing mechanism is located in the first accommodating space, and the upper pressing plate is formed with a plurality of first holes corresponding to the plurality of first supporting columns, The upper platen moves relative to the first support column by the first hole.

As a further improvement of an embodiment of the present invention, the pressing mechanism further includes a horizontal plate, a plurality of second support columns, a first dome connecting plate and a first dome connecting head; and the plurality of second supporting columns are fixedly connected to the horizontal a plate and the upper platen; the first dome connecting plate is located between the horizontal plate and the top plate, and the first dome connecting plate is fixedly connected with the horizontal plate; the first dome a connector connecting the first dome connecting plate and the first cylinder; wherein, when the punching device is in an initial state, the first cylinder drives the pressing by the first dome connector Moving the mechanism toward the bottom plate; when the punching device completes the punching action and returns to the initial state, the first cylinder drives the first dome connector to move away from the bottom plate, thereby driving the pressing The mechanism moves away from the floor.

As a further improvement of an embodiment of the present invention, the pressing mechanism further includes a fixing plate and a plurality of third supporting columns, wherein the plurality of third supporting columns are fixedly connected to the fixing plate and the upper pressing plate; wherein the fixing plate, The plurality of third supporting columns and the upper pressing plate enclose a second accommodating space, the punching mechanism is located in the second accommodating space, and the punching pin fixing plate corresponds to the plurality of third supporting columns A plurality of second holes are formed, and the punch fixing plate moves relative to the third support column by the second holes.

As a further improvement of an embodiment of the present invention, the punching mechanism further includes a second dome connecting plate and a second dome connecting head, wherein the second dome connecting plate is located at the fixing plate and fixed to the punching pin Between the plates, and the second dome connecting plate is fixedly connected to the punch fixing plate; the second dome connecting head connects the second dome connecting plate and the second cylinder; The pressing mechanism When in the pressed state, the second cylinder drives the punching mechanism to move toward the bottom plate by the second dome joint; when the punching mechanism completes the punching state and returns to the initial state, The second cylinder drives the second dome to move away from the bottom plate, thereby driving the punching mechanism to move away from the bottom plate until returning to an initial state.

As a further improvement of an embodiment of the present invention, the punching mechanism further includes a punching needle top plate, and the punching needle top plate is located between the punching pin fixing plate and the second dome connecting plate, the punching needle top plate The fixing pin fixing plate and the punching pin are fixed.

As a further improvement of an embodiment of the present invention, the first cylinder is located above the top plate, the top plate has a first connecting groove, and the first dome connecting the first connecting groove through the first connecting groove a first cylinder; the second cylinder is located between the fixing plate and the horizontal plate, the fixing plate has a second connecting groove, and the second dome connecting head is connected through the second connecting groove The second cylinder.

As a further improvement of an embodiment of the present invention, the punching device further includes a guiding plate located above the bottom plate, the guiding plate has a groove, the groove penetrating the guiding plate to expose the receiving hole The groove is for receiving the item to be punched.

As a further improvement of an embodiment of the present invention, the punching device further includes: a platen and a collecting box, the platen is located below the bottom plate; the collecting box is located below the platen; wherein the platen has a corresponding A drop hole of the receiving hole, the drop hole communicating with the receiving hole and the collection box.

In order to achieve one of the foregoing creative purposes, an embodiment of the present invention provides a battery insulated PE bag for wrapping a battery, and the PE bag forms a plurality of punching holes by the aforementioned punching device.

Compared with the prior art, the creation has the following effects: the creation uses the pressing mechanism to first press the items to be punched, prevents the items to be punched from being displaced, and then punches the punched items, and the punching process is convenient and quick, and Punching quality is good.

The present invention will be further described below in conjunction with the drawings and embodiments.

10‧‧‧ collection box

100‧‧‧ top board

101‧‧‧First connection slot

102‧‧‧First support column

11‧‧‧Hands

20‧‧‧ board

200‧‧‧Compacting mechanism

21‧‧‧Dropped holes

30‧‧‧floor

31‧‧‧ receiving hole

40‧‧‧ Guide plate

400‧‧‧PE bags

401‧‧‧Perforation

41‧‧‧ Groove

50‧‧‧ Lower platen

51‧‧‧First through hole

60‧‧‧Upper plate

601‧‧‧ first hole

61‧‧‧Second through hole

70‧‧‧punching plate

701‧‧‧Second hole

71‧‧‧punching needle

711‧‧‧blade

72‧‧‧punch top plate

73‧‧‧Second dome connecting plate

731, 911‧‧‧ accommodating slots

74‧‧‧Second dome connector

741, 921‧‧‧ joint head end

7411, 9211‧‧‧Responsible Department

742, 922‧‧‧Connector body

75‧‧‧second cylinder

80‧‧‧fixed board

81‧‧‧Second connection slot

82‧‧‧ third support column

90‧‧‧ horizontal board

91‧‧‧First dome connecting plate

92‧‧‧First dome connector

93‧‧‧Second support column

94‧‧‧First cylinder

1 is a schematic view showing the overall structure of a punching device according to an embodiment of the present invention; 2 is a schematic structural view of a pressing mechanism and a punching mechanism according to an embodiment of the present invention; FIG. 3 is a schematic structural view of a first dome connecting head according to an embodiment of the present invention; and FIG. 4 is a punching of an embodiment of the present invention. FIG. 5 is a schematic structural view of a second dome connector according to an embodiment of the present invention; FIG. 6 is a schematic structural view of a collection box according to an embodiment of the present invention; and FIG. 7 is a PE bag according to an embodiment of the present invention. Schematic.

The present invention will be described in detail below in conjunction with the specific embodiments shown in the drawings. However, the embodiments do not limit the present invention, and the structures, methods, or functional changes made by those skilled in the art in accordance with the embodiments are included in the scope of the present invention.

In the description of this creation, it is to be understood that the terms "center", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal" The orientation or positional relationship of the indications of "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the creation and simplification of the description, rather than indicating It is to be understood that the device or component referred to has a particular orientation and is constructed and operated in a particular orientation and is not to be construed as a limitation.

As shown in FIG. 1 to FIG. 2, the punching device of the present embodiment includes a bottom plate 30, a first cylinder 94, a second cylinder 75, a pressing mechanism 200, and a punching mechanism 300. The bottom plate 30 has a plurality of receiving holes 31. The bottom plate 30 is for placing an object to be punched; the second cylinder 75 is separated from the first cylinder 94; the pressing mechanism 200 includes a lower pressing plate 50 and an upper pressing plate 60, and the lower pressing plate 50 is located at the bottom plate Above the 30, the lower pressing plate 50 has a plurality of first through holes 51 corresponding to the plurality of receiving holes 31; an upper pressing plate 60 is located above the lower pressing plate 50, and the upper pressing plate 60 has a plurality of first through holes 51 corresponds to a plurality of second through holes 61; the punching mechanism 300 includes a punching pin fixing plate 70 and a plurality of punching pins 71, the punch pin fixing plate 70 is located above the upper pressing plate 60; the plurality of punching pins 71 are located at the punching pin a fixing plate 70; wherein the punching device is configured to drive the pressing mechanism 200 to move toward the bottom plate 30 when the punching device is in an initial state until the lower portion Pressing plate 50 presses the object to be punched; when the pressing mechanism 200 is During the pressing process, the lower pressing plate 50 always presses the object to be punched, and the second cylinder 75 drives the punching mechanism 300 to move toward the bottom plate 30, and the punching needle 71 passes through The second through hole 61 and the first through hole 51 form a punching hole on the object to be punched, and the punching needle 71 enters the receiving hole 31.

In the embodiment, the upper pressing plate 60 and the lower pressing plate 50 are in contact with each other, and the pressing mechanism 200 pre-presses the items to be punched placed on the bottom plate 30 to prevent the objects to be punched from being curled up. Or curved or displaced, and then the punching pin 71 on the punching mechanism 300 contacts and pierces the object to be punched on the bottom plate 30, thereby completing the punching of the object to be punched, and the punching needle 71 finally enters the bottom plate. In the receiving hole 31 of the 30, the two are cut to achieve the purpose of punching; wherein the embodiment includes a first cylinder 94 and a second cylinder 75, and the first cylinder 94 is used to control the movement of the pressing mechanism 200 to achieve the treatment. The pre-compression of the hole item, the second cylinder 75 is used to control the movement of the punching mechanism 300 to achieve punching of the punched article, since the first cylinder 94 and the second cylinder 75 are independent of each other, when the first cylinder 94 When the pressing mechanism 200 is moved toward the bottom plate 30, the punching mechanism 300 can be kept stationary, but not limited thereto. At this time, the punching mechanism 300 can also move synchronously, and only the punching needle 71 does not protrude from the lower pressing plate 50. The lower surface is ok; when the pressing mechanism 200 and the bottom plate 30 are to be punched When the pressing, the second cylinder 75 controls the punch pin 71 protrudes out of the platen 50 below the surface of the punching, the bottom plate 50 and the lower plate 30 is always pressed against the article to be punched.

In the present embodiment, as shown in FIG. 1, the punching device further includes a top plate 100 and a plurality of first support columns 102, and the plurality of first support columns 102 are fixedly connected to the top plate 100 and the bottom plate 30; The top plate 100, the plurality of first support columns 102 and the bottom plate 30 define a first accommodating space, the pressing mechanism 200 is located in the first accommodating space, and the upper pressing plate 60 corresponds to the The plurality of first support columns 102 are formed with a plurality of first holes 601, and the upper platen 60 moves relative to the first support columns 102 by the first holes 601; the plurality of first support columns 102 and the top plate 100 and the The bottom plate 30 can be connected by a guide post or a guide sleeve, but is not limited thereto.

In this embodiment, as shown in FIG. 1 and FIG. 2, the pressing mechanism 200 further includes a horizontal plate 90, a plurality of second support columns 93, a first dome connecting plate 91 and a first dome connecting head 92; Second branch The support post 93 is fixedly connected to the horizontal plate 90 and the upper pressing plate 60; the first dome connecting plate 91 is located between the horizontal plate 90 and the top plate 100, and the first dome connecting plate 91 Fixedly connected to the horizontal plate 90; the first dome connector 92 connects the first dome connecting plate 91 and the first cylinder 94; wherein, when the punching device is in an initial state, The first cylinder 94 drives the pressing mechanism 200 to move toward the bottom plate 30 by the first dome connector 92 until the lower pressing plate 50 presses the object to be punched; when the punching device completes the punching When the hole moves and returns to the initial state, the first cylinder 94 drives the first dome connector 92 to move away from the bottom plate 30, thereby driving the pressing mechanism 200 to move away from the bottom plate 30; The support post 93 and the horizontal plate 90 and the upper pressing plate 60 may be connected by a guide post and a guide sleeve, but not limited thereto.

In the present embodiment, as shown in FIGS. 1 to 3, the first cylinder 94 is located above the top plate 100, and the top plate 100 has a first connecting groove 101 through which the first dome connector 92 passes. The first connecting groove 101 is connected to the first cylinder 94. Specifically, the first dome connector 92 includes a connector body 922 and a connector end portion 921, and the connector head end portion 921 and the connector body 922 The mutually offset regions are the abutting portions 9211, and the connecting head end portion 921 and the connecting head body 922 can both have a columnar design, and the diameter of the connecting head end portion 921 is greater than the diameter of the connecting head body 922 and the first The diameter of the connecting slot 101, the diameter of the connector body 922 is slightly smaller than the diameter of the first connecting slot 101, the connector body 922 is connected to the first cylinder 94 through the first connecting slot 101, and the connecting end 921 is located in the first circle. In the accommodating groove 911 of the top connecting plate 91, when the punching device is in an initial state, the first cylinder 94 pushes the first dome connector 92 toward the bottom plate 30, the connecting end The portion 921 pushes the horizontal plate 90 to drive the entire pressing mechanism 200 down until When the pressing plate 50 presses the object to be punched; when the punching device completes the punching action and returns to the initial state, the first cylinder 94 drives the first dome connector 92 away from the bottom plate. During the movement, the abutting portion 9211 and the first dome connecting plate 91 are in contact with each other, and the abutting portion 9211 drives the first dome connecting plate 91 to move upward, thereby driving the entire pressing mechanism 200 to move up.

In the present embodiment, as shown in FIG. 2, the pressing mechanism 200 further includes a fixing plate 80 and a plurality of third supporting columns 82. The plurality of third supporting columns 82 are fixedly connected to the fixing plate 80 and the upper pressing plate. 60. The fixing plate 80, the plurality of third supporting columns 82 and the upper pressing plate 60 define a second accommodating space, and the punching mechanism 300 is located in the second accommodating space. A plurality of second holes 701 are formed in the plurality of third support columns 82, and the punch fixing plate 70 moves relative to the third support column 82 by the second holes 701; The support post 82 and the fixing plate 80 and the upper pressing plate 60 can be connected by a guide post and a guide sleeve, but not limited thereto.

In the present embodiment, as shown in FIG. 4 and FIG. 5, the punching mechanism 300 further includes a second dome connecting plate 73 and a second dome connecting head 74. The second dome connecting plate 73 is located at the Between the fixing plate 80 and the punch fixing plate 70, and the second dome connecting plate 73 is fixedly connected with the punch fixing plate 70; the second dome connecting head 74 is connected to the second a dome connecting plate 73 and the second cylinder 75; wherein the second cylinder 75 drives the punching mechanism by the second dome connector 74 when the pressing mechanism 200 is in a pressed state Moving toward the bottom plate 30; when the punching mechanism 300 completes the punching action, the second cylinder 75 drives the second dome connector 74 to move away from the bottom plate 30, thereby driving the punching mechanism The 300 moves away from the bottom plate 30 until it returns to the initial state.

In the present embodiment, as shown in FIG. 2, FIG. 4 and FIG. 5, the second cylinder 75 is located between the fixing plate 80 and the horizontal plate 90, and the fixing plate 80 has a second connecting groove 81. The second dome connector 74 is connected to the second cylinder 75 through the second connecting slot 81. Specifically, the second dome connector 74 includes a connector body 742 and a connector end portion. 741, the connecting head end portion 741 and the connecting head body 742 are offset from each other by the abutting portion 7411, and the connecting head end portion 741 and the connecting head body 742 can have a columnar design, and the connecting head end portion 741 The diameter of the connector body 742 is larger than the diameter of the second connector slot 81, the diameter of the connector body 742 is slightly smaller than the diameter of the second connector slot 81, and the connector body 742 passes through the second connector slot 81 and the second cylinder. 75, the connector head end portion 741 is located in the receiving groove 731 of the first dome connecting plate 73, and the second cylinder 75 pushes the second dome connector 74 when the pressing mechanism 200 is in the pressing state. Moving toward the bottom plate 30, the connector end portion 741 pushes the punch fixing plate 70 to drive The entire punching mechanism 300 is moved downward, and the punching needle 71 protrudes from the lower surface of the lower pressing plate 50 to pierce the object to be punched; when the punching mechanism 300 completes the punching action, the second cylinder 75 drives the The second dome connector 74 moves away from the bottom plate 30. Since the abutting portion 7411 and the second dome connecting plate 73 are in contact with each other, the abutting portion 7411 drives the second dome connecting plate 73 to move up, thereby driving the whole The punching mechanism 300 is moved up, and the punching needle 71 is retracted above the lower pressing plate 50.

In the present embodiment, as shown in FIG. 4, the punching mechanism 300 further includes a punching needle top plate 72, and the punching needle top plate 72 is located in the punching pin fixing plate 70 and the second dome connecting plate 73. The punching needle top plate 72 is configured to fix the punch pin fixing plate 70 and the punching pin 71. Specifically, the punch pin fixing plate 70 may be provided with a punching pin through hole for the end of the punching pin 71 to pass through. The punching pin fixing plate 70, the punching pin top plate 72 corresponding to one side of the punching pin fixing plate 70 may be provided with a fitting portion for fixing the end portion of the punching pin 71, so that the punching pin 71 is fixed, so that when the punching pin 71 needs to be replaced In this case, it is only necessary to pull out the punching needle 71 from the punching needle top plate 72, which is convenient and quick; the other end of the punching needle 71 is provided with a cutting edge 711 for piercing the item to be punched.

In the present embodiment, as shown in FIG. 1 , the punching device further includes a guiding plate 40 located above the bottom plate 30 , the guiding plate 40 has a groove 41 , and the groove 41 penetrates the guiding plate 40 to expose the receiving hole 31, the groove 41 is used for accommodating the object to be punched; wherein the size of the groove 41 can be the same as the size of the item to be punched, so that the groove 41 can be horizontal The direction of the punched article is limited. In an example, the groove 41 is designed to be flexiblely adjustable. When the object to be punched is placed in the groove 41, the groove 41 is adjusted to realize the object to be punched. Limit.

In the present embodiment, as shown in FIG. 1, the punching device further includes a platen 20 and a collecting box 10, the platen 20 is located below the bottom plate 30; the collecting box 10 is located below the platen 20; The platen 20 has a drop hole 21 corresponding to the receiving hole 31. The drop hole 21 communicates with the receiving hole 31 and the collecting box 10. When the punching pin 71 pierces the item to be punched, the punching plate The corner piece of the hole portion can sequentially enter the collecting box 10 through the receiving hole 31 and the falling hole 21 to prevent the corner material from polluting the environment. As shown in FIG. 6, the collecting box 10 can be designed as a drawer-like structure, and the collecting box 10 is provided with a handle. 11, to facilitate the cleaning of the collection box 10.

As shown in FIG. 7, the present invention also provides a battery insulated PE bag 400 for wrapping a battery, and the PE bag 400 forms a plurality of punching holes 401 by the above-mentioned punching device.

The creation uses the pressing mechanism to first press the items to be punched, prevents the items to be punched from being displaced, and then punches the punched items, the punching process is convenient and quick, and the punching quality is good.

The present invention is not limited to the foregoing embodiments, but includes all combinations of circuit implementations indicated by the theoretical derivation in the specification; various changes are made without departing from the spirit of the present invention and the scope of the claims. Implementation is still within the scope of this creation.

10‧‧‧ collection box

100‧‧‧ top board

101‧‧‧First connection slot

102‧‧‧First support column

11‧‧‧Hands

20‧‧‧ board

21‧‧‧Dropped holes

30‧‧‧floor

31‧‧‧ receiving hole

40‧‧‧ Guide plate

41‧‧‧ Groove

50‧‧‧ Lower platen

51‧‧‧First through hole

60‧‧‧Upper plate

601‧‧‧ first hole

61‧‧‧Second through hole

70‧‧‧punching plate

701‧‧‧Second hole

71‧‧‧punching needle

72‧‧‧punch top plate

73‧‧‧Second dome connecting plate

74‧‧‧Second dome connector

75‧‧‧second cylinder

80‧‧‧fixed board

81‧‧‧Second connection slot

82‧‧‧ third support column

90‧‧‧ horizontal board

91‧‧‧First dome connecting plate

92‧‧‧First dome connector

93‧‧‧Second support column

94‧‧‧First cylinder

Claims (10)

A punching device comprising: a bottom plate having a plurality of receiving holes, the bottom plate is for placing an object to be punched; a first cylinder; a second cylinder, the second cylinder is separated from the first cylinder; and the pressing mechanism The pressing mechanism includes: a lower pressing plate located above the bottom plate, the lower pressing plate having a plurality of first through holes corresponding to the plurality of receiving holes; an upper pressing plate located above the lower pressing plate, the upper pressing plate a plurality of second through holes corresponding to the plurality of first through holes; and a punching mechanism, the punching mechanism comprising: a punch pin fixing plate located above the upper platen; a plurality of punch pins located at the punch pin a fixing plate; wherein the punching device is configured to, when the punching device is in an initial state, the first cylinder drives the pressing mechanism to move toward the bottom plate until the lower pressing plate is pressed Treating the punched article; when the pressing mechanism is in a pressed state, the lower pressing plate always presses the object to be punched, and the second cylinder drives the punching mechanism to move toward the bottom plate Punching needle Times through the second through-hole and the first through-hole and is formed to be punched on the article punching and the punching needle into the receiving aperture. The punching device of claim 1, wherein the punching device further comprises: a top plate; a plurality of first support columns fixedly connecting the top plate and the bottom plate; wherein the top plate and the plurality The first supporting column and the bottom plate define a first accommodating space, the pressing mechanism is located in the first accommodating space, and the upper pressing plate corresponds to the The plurality of first support columns are formed with a plurality of first holes, and the upper platen moves relative to the first support column by the first holes. The punching device of claim 2, wherein the pressing mechanism further comprises: a transverse plate; a plurality of second supporting columns fixedly connecting the horizontal plate and the upper pressing plate; the first dome connecting plate The first dome connecting plate is located between the horizontal plate and the top plate, and the first dome connecting plate is fixedly connected with the horizontal plate; the first dome connecting head, the first circle a top connector connecting the first dome connecting plate and the first cylinder; wherein, when the punching device is in an initial state, the first cylinder drives the pressure by the first dome connector The tensioning mechanism moves toward the bottom plate; when the punching device completes the punching action and returns to the initial state, the first cylinder drives the first dome connector to move away from the bottom plate, thereby driving the pressure The tensioning mechanism moves away from the bottom plate. The punching device of claim 3, wherein the pressing mechanism further comprises: a fixing plate; a plurality of third supporting columns fixedly connecting the fixing plate and the upper pressing plate; wherein the fixing plate The plurality of third supporting columns and the upper pressing plate enclose a second accommodating space, wherein the punching mechanism is located in the second accommodating space, and the punching pin fixing plate corresponds to the plurality of third supports The column is formed with a plurality of second holes, and the punch fixing plate moves relative to the third support column by the second holes. The punching device of claim 4, wherein the punching mechanism further comprises: a second dome connecting plate, the second dome connecting plate is located between the fixing plate and the punch pin fixing plate, and the second dome connecting plate is fixedly connected with the punch pin fixing plate; a second dome connector connecting the second dome connecting plate and the second cylinder; wherein, when the pressing mechanism is in a pressing state, the second cylinder borrows The second dome connector drives the punching mechanism to move toward the bottom plate; when the punching mechanism completes the punching action and returns to the initial state, the second cylinder drives the second dome connection The head moves away from the bottom plate, thereby causing the punching mechanism to move away from the bottom plate until returning to an initial state. The punching device of claim 5, wherein the punching mechanism further comprises: a punching needle top plate, the punching needle top plate being located between the punch pin fixing plate and the second dome connecting plate The punching needle top plate is used to fix the punch pin fixing plate and the punching pin. The punching device of claim 5, wherein the first cylinder is located above the top plate, the top plate has a first connecting groove, and the first dome connector passes through the first connection a first cylinder is connected to the slot; the second cylinder is located between the fixed plate and the horizontal plate, the fixed plate has a second connecting groove, and the second dome is passed through the first The second cylinder is connected to the second connecting groove. The punching device of claim 1, wherein the punching device further comprises: a guiding plate located above the bottom plate, the guiding plate having a groove, the groove extending through the guiding plate The receiving hole is exposed, and the groove is for receiving the item to be punched. The punching device of claim 1, wherein the punching device further comprises: a platen located below the bottom plate; a collecting box located below the platen; wherein the platen has a drop hole corresponding to the receiving hole, the drop hole communicates with the receiving hole and the collecting box. A battery-insulated PE bag for wrapping a battery, the PE bag forming a plurality of punching holes by the punching device according to any one of the above claims.