CN211757872U - Tank body forming device and system - Google Patents

Abstract

The application discloses jar body forming device, including die block and the jumper bar and the bottom surface forming die that are located the die block both sides, bottom surface forming die can be close to or keep away from the jumper bar, gets into the die block in-process at the jumper bar, and bottom surface forming die is close to specific distance with the jumper bar to keep relative static. The application also discloses a jar body forming system, including a plurality of jar body forming device, this a plurality of jar body forming device establish ties and set up. The utility model discloses in jar body forming process, jar body bottom surface is extruded all the time between jumper bar and bottom surface forming die, can guarantee jar fashioned quality of body bottom surface, and the linkage can be realized through a driving piece to jumper bar and bottom surface forming die moreover, and the synchronism is good, and with low costs.

Description

Tank body forming device and system

Technical Field

The application relates to a tank body forming device and system, in particular to the technical field of capacitor shells, battery metal shells, beverage cans and the like.

Background

At present, capacitor shells and power batteries (lithium batteries and common alkaline batteries) made of steel shells are all used by stamping equipment (such as a punch), and the production speed of the equipment is not increased because the stamping equipment has a return stroke and other useless strokes.

In addition, the existing stamping equipment has the problems of large matching error between a feeding mechanism and a punch press, unstable forming quality, high lug making rate, low material utilization rate, high cost and the like.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a jar body forming device, system to overcome not enough among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme:

the application discloses a tank body forming device, which comprises a bottom die, a punch rod and a bottom surface forming die, wherein the punch rod and the bottom surface forming die are positioned on two sides of the bottom die,

the bottom surface forming die can be close to or far away from the punch,

and in the process that the punch enters the bottom die, the bottom surface forming die is close to the punch to a specific distance and keeps relatively static.

Preferably, in the above can body forming apparatus, the specific distance is equal to the thickness of the bottom wall of the can body to be processed.

Preferably, in the above can body forming apparatus, the plunger may be close to or remote from the bottom mold,

the movement of the punch and the bottom surface forming die are linked.

Preferably, the above can body forming apparatus further comprises a driving mechanism, which simultaneously acts on the punch and the bottom surface forming die to realize the motion relationship between the punch and the bottom surface forming die.

Preferably, in the above can body forming apparatus, the driving mechanism comprises a rotary tower capable of rotating circumferentially, and an upper cam and an intermediate cam provided around the rotary tower,

the upper cam acts on the punch and can drive the punch to approach or depart from the bottom die,

the intermediate cam acts on the bottom surface forming die and can drive the bottom surface forming die to approach or separate from the bottom die.

Preferably, in the above tank body forming apparatus, the punch, the bottom surface forming mold and the bottom mold array are distributed around the revolving tower,

and a guide rail is arranged between the punch rod and the rotary tower.

Preferably, in the above can body forming apparatus, the upper cam has a continuous working surface having at least one period of height variation, and the plunger is capable of performing a reciprocating motion once during a period of height variation.

Preferably, in the above can body forming apparatus, the intermediate cam has a continuous working face having at least one reciprocating cycle.

Preferably, in the above can body forming apparatus, the working face of the intermediate cam includes at least one convex arcuate face.

Preferably, in the above can body forming apparatus, the upper cam has a continuous guide surface, and the working surface has 1 cycle of height variation;

the intermediate cam has a continuous guide surface with 2 cycles of height variation.

Preferably, the tank forming apparatus further comprises an auxiliary support,

the bottom surface forming die is supported on the auxiliary bracket,

the auxiliary bracket is supported on the middle cam through the cam follower in a matching way.

Preferably, the can body forming apparatus further comprises a driving member,

the driving piece acts on the bottom surface forming die and can drive the bottom surface forming die to approach or be far away from the auxiliary bracket.

Preferably, in the above can body forming apparatus, further comprises a stopper rod,

the driving piece adopts a spring which is provided with a spring,

the limiting rod is connected between the auxiliary bracket and the bottom surface forming die, the bottom surface forming die can approach or leave the auxiliary bracket under the guiding and limiting of the limiting rod,

the spring sleeve is arranged on the outer side of the limiting rod, and the spring is extruded between the bottom surface forming die and the auxiliary support.

Preferably, the can body forming apparatus further comprises a conveying assembly,

the conveying assembly comprises a tank inlet conveying guide rail, a tank inlet star wheel, a tank outlet star wheel and a tank outlet guide rail which are sequentially arranged.

The application also discloses a can body forming system, which comprises a plurality of any one of the can body forming devices,

the plurality of tank forming devices are arranged in series.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses in jar body forming process, jar body bottom surface is extruded all the time between jumper bar and bottom surface forming die, can guarantee jar fashioned quality of body bottom surface, and the linkage can be realized through a driving piece to jumper bar and bottom surface forming die moreover, and the synchronism is good, and with low costs.

In addition, the method of the utility model can realize the continuous production of the pot, and can not generate a lot of auxiliary production time due to the transfer of the pot in the middle of conveying, thereby greatly improving the production efficiency; the product quality can be greatly improved due to the continuity of the product production; the equipment realizes synchronization of all internal components by using the same drive, reduces equipment cost and improves product quality; auxiliary equipment is greatly reduced; because of the flexible series connection between the equipment, the requirement on the factory building is reduced, products with different specifications can be flexibly produced, the application range of the equipment is enlarged, and the production cost of remodeling is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic perspective view of a tank punching device according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of a power transmission of a can body punching device according to an embodiment of the present invention;

FIG. 3 is a schematic view of the cam and turret installation of an embodiment of the invention;

fig. 4 is a cross-sectional view of a can body stamping apparatus according to an embodiment of the present invention;

fig. 5 is a schematic structural view illustrating the bottom die assembly and the lower cam according to an embodiment of the present invention;

FIG. 6 is an enlarged view of A in FIG. 4;

fig. 7 is a top view of a can body punching apparatus according to an embodiment of the present invention.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The can body forming device is mainly used for the drawing process of the can body (after the cup punching is finished) and is used for changing the diameter, the height and the wall thickness of the can body, and the cup punching is finished by other equipment.

The device is particularly suitable for forming cylindrical battery shells and capacitor shells, but it should be noted that the device is also suitable for forming other tank body structures, including but not limited to beverage cans and the like.

Referring to fig. 1 and 2, in one embodiment of the present invention, a can body punching apparatus is provided, which includes a frame 10, a turret assembly 20, an upper cam assembly 30, a ram assembly 40, a bottom die assembly 50, and a driving mechanism 60.

The frame 10 includes an upper frame 11 and a lower frame 12 disposed up and down, the upper frame 11 and the lower frame 12 respectively enclose a protection space, wherein the turret assembly 20 is supported in the protection space enclosed by the upper frame 11, and the protection space enclosed by the lower frame 12 is used as a transmission space of the driving mechanism 60.

As shown in fig. 3 and 4, the turret assembly 20 includes a rotating tower 21, and the rotating tower 21 is rotatably disposed on the frame 10 through a bearing housing 22.

The turret assembly 20 transmits power of the driving mechanism 60 to the ram and the bottom mold to provide power and support for reducing and increasing the height of the cans.

In one embodiment, the axial direction of the turret 21 is in a vertical direction, and the turret 21 can rotate circumferentially along its axis under the action of the driving mechanism 60.

The upper cam assembly 30 comprises an annular upper cam 31 sleeved on the periphery of the rotating tower 21, and the upper cam 31 and the machine frame 10 are relatively fixed. The upper cam 31 has a continuous guide surface with at least one reciprocating period, and the height of each surface varies continuously during each reciprocating period.

In one embodiment, in order to achieve relative rotation between the upper cam 31 and the turret 21 while ensuring rotational stability of the top of the turret 21, a bearing assembly 23 is provided between the upper cam 31 and the shaft at the top of the turret 21.

In one embodiment, upper cam assembly 30 further includes a height adjustment mechanism 32 to accommodate the stretching requirements and adjustment assembly tolerances (height direction) of cans of different heights.

In this embodiment, the height adjusting mechanism 32 acts on the upper cam 31 and can drive the upper cam 31 to move and adjust in the vertical direction.

Further, the height adjusting mechanism 32 includes a sleeve 321, a lifting screw 322 and a supporting seat 323.

In one embodiment, the lift screw may also be a ball screw.

The bottom end of the sleeve 321 is correspondingly attached to the top surface of the upper cam 31, and is detachably fixed with the upper cam 31 through a screw. The lower end of the lifting screw 322 is in threaded connection with the sleeve 321, and the upper end of the lifting screw 322 is rotatably connected with the support base 323 through a bearing.

In the technical scheme, when the height of the punch assembly in the vertical direction needs to be changed, the height can be acted on the top end of the lifting screw rod 322 through a wrench, and the upper cam and the punch assembly are pulled to integrally ascend or descend through rotation.

In another embodiment, the top end of the lifting screw 322 may be threadedly engaged with the supporting seat 323, and correspondingly, the lower end of the lifting screw 322 is rotatably engaged with the sleeve 321 through a bearing.

In one embodiment, the height adjustment mechanism 32 may also be lifted by other means, such as a motor, an air cylinder, etc. as a power output.

As shown in connection with figure 3, the ram assemblies 40 are arranged in an array around the turret, each ram assembly 40 including a ram 42 and a cam follower 41.

The plunger 42 moves circumferentially on the rotary tower and circularly along the rotary tower, and is matched with the bottom die for use, so that the diameter and the height of the tank can be changed.

The cam follower 41 is supported on the upper cam 31 in a fitting manner and can roll cyclically along the working surface of the upper cam 31.

The plunger 42 is located in the vertical direction at its axial direction, and has its tip fixed below the cam follower 41 and movable up and down along the working surface of the upper cam 31. The punch 42 is shaped to form an internal mould for the can body to be processed and acts on the can body to move it downwardly.

Further, a guide rail 43 is arranged between the ram 42 and the outer wall of the turret 21, the ram 42 is connected with the guide rail 43, and the ram can move up and down along the guide rail 43.

The guide rail 43 is preferably a linear guide rail.

The rotary tower 21 can drive the punch 42 to rotate circumferentially during rotation, and the cam follower 41 moves up and down along the working surface of the upper cam 31 during rotation, so as to drive the guide rod to reciprocate up and down.

In the preferred embodiment, a single ram assembly 40 may be driven to complete a single drawing cycle, i.e., a single reciprocating motion, during one revolution of the turret.

Since the punch 42 is generally long, in order to ensure the stability of the movement in the vertical direction, an auxiliary support 44 is further provided, and a positioning hole for the punch 42 to pass through is formed in the auxiliary support 44, and the diameter of the positioning hole is slightly larger than the outer diameter of the punch.

Further, the auxiliary support 44 is an annular plate that is sleeved on the outer side of the turret 21 and is vertically fixed to the outer wall of the turret 21. A plurality of positioning holes are arranged on the auxiliary supporting piece in an annular array, and each positioning hole corresponds to one punch rod respectively.

The lower part of the auxiliary supporting piece 44 can be further provided with a demoulding ring 45, and each demoulding ring 45 is respectively provided with a positioning hole for the punch to pass through.

The demoulding ring 45 has the function that after the pot is stretched and formed, the plunger can drive the pot to be separated from the bottom die, the pot needs to be separated from the plunger after separation, and the demoulding ring has the function of separating the pot from the plunger. The stripper ring 45 is fixed to the bottom mold support 52 and moves up and down and rotates together with the bottom mold 51.

In the preferred embodiment, the stripper ring 45 is independently provided in a plurality in an annular array on the outer wall surface of the turret 21.

In a preferred embodiment, the ram is threaded onto the auxiliary support throughout the stroke. The drawing of patterns ring is close to the setting of die block subassembly for guarantee that the jumper bar can be accurate and jar body centering, the jar body after the shaping can shift out smoothly will be guaranteed to the height between drawing of patterns ring and the die block subassembly simultaneously.

The bottom die assemblies 50 are arranged around the rotary drum in an array, and each bottom die assembly 50 corresponds to the position right below one punch assembly 40.

Each die assembly 50 includes a die 51, and the die 51 has a forming hole for engaging with the punch 42.

The bottom die 51 moves circumferentially on the revolving tower and moves up and down along the guide rails, and the diameter and height of the tank can be changed by matching with the punch.

The bore of the forming hole is smaller than the outer diameter of the punching cup to be stretched, the punch rod and the punching cup are coaxially arranged during working, the punch rod acts on the bottom of the punching cup and drives the punching cup to stretch in the forming hole, particularly, the outer edge of the bottom of the punching cup forms the side wall of the tank body through stretching, and when the punching cup is extruded and moved in the forming hole, the tank wall is further stretched and the wall thickness is changed. Therefore, when the forming operation is completed, the outer diameter of the can body is reduced, and the can body is lengthened.

Further, in order to ensure the service life and the molding quality of the bottom mold, the opening edge of the bottom mold 51 is formed with an inclined working surface through which the bottom edge of the can body is conveniently slid into the molding hole.

The frame 10 is further fixed with a lower cam 70, and the lower cam 70 is sleeved outside the revolving tower 21. The lower cam 70 has a continuous working surface having at least one reciprocating period, and the height of each working surface varies continuously during each reciprocating period.

Further, the working surfaces of the lower cam 70 and the upper cam 31 are in a symmetrical relationship, specifically, at the same angle in the circumferential direction, there is a positional relationship with each other in the height direction.

Each of the bottom die assemblies 50 further includes a bottom die support 52, and the bottom die 51 is fixed to the bottom die support 52, and the bottom end of the bottom die support 52 is supported on the working surface of the lower cam 70 by the cam follower 53.

Further, as shown in fig. 6, a guide rail 54 is provided between the bottom die support 52 and the outer wall of the revolving tower 21, the bottom die support 52 is connected to the guide rail 54, and the bottom die support 52 is movable up and down along the guide rail 54.

The revolving tower 21 can drive the bottom die assembly 50 to rotate circumferentially during the rotation, and the cam follower 53 rolls along the working surface of the lower cam 70 during the rotation, so as to drive the bottom die assembly 50 to reciprocate up and down integrally.

In this technical scheme, the curve working face of upper cam 31 and lower cam 70 corresponds in the height for drive jumper bar 42 and die block 51 respectively and move or deviate from in opposite directions, thereby realize the tensile of jar and change the wall thickness, can reduce the acceleration of jumper bar when vertical motion simultaneously, improve jar shaping quality, improve production speed.

In order to achieve the disengagement of the can from the mould, the device is also provided with an auxiliary stripping assembly 80, which auxiliary stripping assembly 80 ejects the can from the bottom mould by means of a cam (or with an actuator such as a cylinder, a spring, etc.).

Further, the auxiliary stripping assembly 80 includes a bottom surface forming mold 81 and a driving member 82, the bottom surface forming mold 81 is correspondingly disposed below the bottom mold 51, and the driving member 82 acts on the bottom surface forming mold 81 and can drive it to approach or move away from the bottom mold 51.

The bottom surface forming die 81 has a horizontal support surface for cooperating with the bottom surface of the tank body to ensure the flatness of the bottom surface of the tank body.

In a preferred embodiment, the outer diameter of the bottom surface forming die 81 is not larger than the outer diameter of the punch, so that the bottom surface forming die 81 can be inserted into the forming hole of the bottom die 51 by the spring. To cylinder battery case and cylinder capacitor case field, the ram all sets up to cylindrically with bottom surface forming die.

It will be readily appreciated that in other embodiments the punch and the floor forming die cross-sectional shape will be determined by the can product being produced, and may for example also be rectangular.

In one embodiment, the auxiliary stripping assembly 80 further includes an auxiliary bracket 83 and a limiting rod 84, the driving member 82 is a spring, the limiting rod 84 is connected between the auxiliary bracket 83 and the bottom surface forming die 81, the bottom surface forming die 81 can approach or move away from the auxiliary bracket 83 under the guidance and limitation of the limiting rod, the spring is sleeved outside the limiting rod 84, and the spring is compressed between the bottom surface forming die 81 and the auxiliary bracket 83.

In the technical scheme, the plunger drives the tank body to extrude into a forming hole of the bottom die 51, then the tank body is contacted with the top supporting surface of the bottom surface forming die and moves downwards synchronously with the bottom surface forming die, the spring can be partially compressed in the downward movement process, the auxiliary demolding mechanism can move downwards along with the plunger until the forming is finished, and the auxiliary demolding mechanism moves upwards along with the plunger until the tank is ejected out of the bottom die (lower die) after the forming is finished. After the molding is finished, the spring acts on the top surface of the tank body and pushes the tank body upwards from the molding hole.

In an embodiment, the auxiliary stripping assembly 80 further includes an intermediate cam 85 and a cam bracket 86, the cam bracket 86 is fixed to the frame 10, and the intermediate cam 85 is sleeved around the rotary tower 21.

The intermediate cam 85 has a continuous working surface with at least one reciprocating period, the height of the working surface continuously varying during each reciprocating period.

In a preferred embodiment, the working surface of the intermediate cam 85 includes at least one convex arcuate surface 851.

Further, the working surface of the intermediate cam 85 includes at least two convex arc-shaped surfaces 851, and the two convex arc-shaped surfaces 851 are symmetrical to both sides of the working surface.

In the technical scheme, two convex arc working surfaces of the middle cam 85 are matched with the working surfaces of the upper cam and the lower cam to finish the demoulding process.

The edge of the cam bracket 86 is fittingly supported on the working face of the intermediate cam 85 by a cam follower 87.

Further, a guide rail 88 is provided between the cam bracket 86 and the die support 52, the cam bracket 86 and the die support 52 are connected, and the cam bracket 86 can move up and down along the guide rail 88.

The upper cam and the middle cam are respectively arranged at the upper part and the middle part of the rotary tower.

In the present case, middle cam passes through the arcwall face, can drive supplementary demoulding mechanism and reciprocate to satisfy following working process:

1. during the downward movement of the punch 42 under the guidance of the upper cam 31, the middle cam acts on the auxiliary demoulding assembly and drives the whole body to move upward through the ascending working surface of the first arc-shaped surface, so that the bottom surface forming die 81 and the bottom end of the punch move close to each other;

2. the punch 42 drives the tank body to contact with the supporting surface of the bottom surface forming die 81 and compresses the spring until the contact support is formed between the bottom end of the bottom surface forming die 81 and the auxiliary bracket 83;

3. under the action of the downhill working surface of the first arc-shaped surface of the intermediate cam 85, the tank body and the bottom surface forming die 81 synchronously move downwards under the condition of keeping fit;

4. after the tank body is formed, the punch rod returns, and the bottom surface forming die 81 synchronously rises under the action of the ascending slope working surface of the second arc-shaped surface;

5. the punch rod continuously rises to the highest, in the process, the tank body is ejected out of the bottom die under the action of the cam and the spring under the action of the ascending slope working surface of the second arc-shaped surface, and then the tank body returns to the bottom under the action of the descending slope working surface of the second arc-shaped surface, so that a complete forming process is completed.

In a period of the tank body forming, the auxiliary demoulding assembly 80 equivalently completes 2 periods of actions, wherein in the first period, the rising section is used for bearing the tank body to be stretched and supporting the bottom surface of the tank body, the falling section is used for stretching and reducing forming of the tank body, in the second period, the rising section is used for ejecting the formed tank body, and the falling section returns to the initial position of the bottom in an idle load manner.

The drive mechanism 60 transmits power to the turret assembly 20 and rotates the turret 21.

The driving mechanism 60 includes a motor 61 disposed outside the frame 10 and a transmission mechanism 62 disposed inside the lower frame 12, and the motor 61 outputs power to the rotating shaft of the turret 21 through the transmission mechanism 62.

In one embodiment, the transmission mechanism 62 includes a transmission gear, and in other embodiments, a transmission belt or the like may be used.

As shown in fig. 7, in order to improve the automation degree, a conveying assembly 90 is further disposed on the frame 10, and the conveying assembly 90 includes a can feeding conveying guide rail 91, a can feeding star wheel 92, a can discharging star wheel 93, and a can discharging guide rail 94, which are sequentially disposed.

The tank inlet conveying guide rail 91 is used for conveying the tank body to be formed to the tank inlet star wheel 92, the tank inlet star wheel 92 sequentially conveys the tank body to different bottom dies, the tank outlet star wheel 93 is used for sequentially conveying the formed tank body (diameter reduction and stretching) to the tank outlet guide rail 94, and then the tank body is conveyed out or conveyed to the next station by the tank outlet guide rail 94 for further stretching and diameter reduction.

In another embodiment, the turret may also be horizontally disposed.

In one embodiment, the upper cam can be omitted, the height of the punch rod is kept unchanged, and the lower cam drives the bottom die to ascend to be matched with the punch rod in action.

In one embodiment, the lower cam can be eliminated, the bottom die is kept unchanged in height, and the upper cam drives the punch to move downwards and to be in active fit with the bottom die. In the embodiment, an upper cam with a large stroke is needed to realize the process, and the defects are that the diameter of the cam is large, the stroke is large, the processing difficulty is large, and the stability of equipment is poor.

In one embodiment, the middle cam can be eliminated, and the auxiliary demoulding effect is realized only through the action of the spring, so that the effect of the auxiliary mould and the bottom surface of the tank body is realized.

In another embodiment, a mold release ring can be added at the lower part of the lower mold to realize the separation of the can from the mold, and in this technical scheme, an intermediate cam is not needed.

In summary, the principle of the present device is as follows: the cup punching and stretching processes are respectively placed on different devices and are connected with each other through a conveying line.

The device is of a rotary structure, realizes rotation around an axis through a cam, realizes circular motion through rotation, and couples the two motions together to meet the requirement on the processing size of the tank; the can in-out device uses star wheels, the cans on the conveying line are arranged at equal intervals by the can in-out star wheels and then are conveyed to the rotating mechanism, and the cans are received by the can out-out star wheels and are conveyed to the conveying line.

Before the cans reach the can discharging star wheel, the cans are ejected out of the bottom die through a cam (or an air cylinder, a spring and the like), and the cans are separated from the die. The process has the advantage of being capable of being used for processes such as flaring and the like.

In an embodiment, a continuous forming system is further provided, which includes a cup punching device and a plurality of the above can body punching devices, which are arranged in sequence, and the plurality of the above can body punching devices are connected in series through a guide rail or a conveyor belt. The dies involved in each can body punching device are different so as to complete different procedures, and in the process flow, the diameter of each can body is reduced and the height is increased after each can body is formed once.

Use the utility model discloses equipment can also realize the deburring and carve processes such as explosion-proof through change individuality subassembly or mould.

The system has the advantages that: the conveying line, the equipment and the equipment can be adjusted at any time according to different tank diameters and tank height requirements; the conveying line also has the function of caching the cans, and equipment in the next process can be ensured to operate without stopping when small faults exist, so that the economic loss caused by equipment faults is reduced; the layout of the equipment can be adjusted according to the actual condition of the plant, and the plant does not need to be newly built or reformed according to the size and the like of the equipment, so that the investment cost is reduced; the equipment design is simple and reliable, the maintenance is convenient, the equipment cost and foreign equipment are greatly reduced, and the low-cost requirement under the intense market competition is met.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (15)

1. A tank body forming device is characterized by comprising a bottom die, a punch rod and a bottom surface forming die which are positioned at two sides of the bottom die,

the bottom surface forming die can be close to or far away from the punch,

and in the process that the punch enters the bottom die, the bottom surface forming die is close to the punch to a specific distance and keeps relatively static.

2. The can body forming apparatus of claim 1, wherein the specific distance is equal to a thickness of a bottom wall of the can body to be processed.

3. The can body forming apparatus of claim 1, wherein the plunger is movable toward and away from the bottom mold,

the movement of the punch and the bottom surface forming die are linked.

4. A can body forming apparatus as claimed in any one of claims 1 to 3, further comprising a drive mechanism which acts simultaneously on the punch and the floor forming die to effect the kinematic association of the punch and the floor forming die.

5. The apparatus for forming can bodies according to claim 4, wherein the driving mechanism comprises a rotary tower capable of rotating circumferentially and an upper cam and an intermediate cam arranged around the rotary tower,

the upper cam acts on the punch and can drive the punch to approach or move away from the bottom die,

the intermediate cam acts on the bottom surface forming die and can drive the bottom surface forming die to approach or separate from the bottom die.

6. The apparatus for forming a can body according to claim 5, wherein the punch, the bottom forming mold and the bottom mold array are distributed around the turret,

and a guide rail is arranged between the punch rod and the rotary tower.

7. Can forming apparatus according to claim 5 or 6 wherein the upper cam has a continuous working surface having at least one period of height variation and the plunger is capable of a reciprocating movement during a period of height variation.

8. Can forming apparatus according to claim 5 or 6 wherein the intermediate cam has a continuous working surface with at least one cycle of reciprocation.

9. The can forming apparatus of claim 8 wherein the working surface of the intermediate cam comprises at least one convex arcuate surface.

10. Can forming apparatus according to claim 5 or 6, wherein the upper cam has a continuous working surface with 1 cycle of height variation;

the intermediate cam has a continuous working surface with 2 cycles of height variation.

11. Can forming apparatus according to claim 5 or 6, further comprising an auxiliary support,

the bottom surface forming die is supported on the auxiliary bracket,

the auxiliary bracket is supported on the middle cam through the cam follower in a matching way.

12. The apparatus for forming can bodies as claimed in claim 11, further comprising a drive member which acts on the bottom surface forming die and moves it toward or away from the auxiliary support.

13. The can forming apparatus of claim 12, further comprising a restraint bar,

the driving piece adopts a spring which is provided with a spring,

the limiting rod is connected between the auxiliary bracket and the bottom surface forming die, the bottom surface forming die can approach or leave the auxiliary bracket under the guiding and limiting of the limiting rod,

the spring sleeve is arranged on the outer side of the limiting rod, and the spring is extruded between the bottom surface forming die and the auxiliary support.

14. The can body forming apparatus of claim 1, further comprising a conveyor assembly,

the conveying assembly comprises a tank inlet conveying guide rail, a tank inlet star wheel, a tank outlet star wheel and a tank outlet guide rail which are sequentially arranged.

15. A can body forming system comprising a plurality of can body forming apparatuses of claim 14,

the plurality of tank forming devices are arranged in series.

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