CN210926176U

CN210926176U - Stacking jig for electric pile

Info

Publication number: CN210926176U
Application number: CN201922498737.1U
Authority: CN
Inventors: 不公告发明人
Original assignee: Wuxi Lead Intelligent Equipment Co Ltd
Current assignee: Jiangsu hydrogen guide intelligent equipment Co.,Ltd.
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-07-03
Anticipated expiration: 2029-12-31

Abstract

The utility model relates to a pile up tool, adopt interior locating lever to fix a position the lamination, the event is low and the debugging is simple to the required precision of equipment. Furthermore, the claw righting mechanism is supported by the mounting frame arranged on the base, and can support the inner positioning rod clamped by the claw righting mechanism. When stacking the initial, the jack catch righting mechanism can be clamped at a position higher than the inner positioning rod, namely, at a position farther away from the inner positioning seat, so that the longer inner positioning rod can be effectively righted and reinforced, and the deflection of the longer inner positioning rod is avoided. The jaw centering mechanism is operable to progressively lower along the inner positioning rod as the laminations are stacked. At the moment, the claw righting mechanism can righting the inner positioning rod, and the lamination inserted into the inner positioning rod can also play a further righting and reinforcing role for the inner positioning rod. Therefore, the positioning accuracy of the stack can be effectively improved.

Description

Stacking jig for electric pile

Technical Field

The utility model relates to a fuel cell processing technology field, in particular to pile up tool.

Background

In the stack production process, due to the material feeding error, the self-deformation of the bipolar plate and the Membrane Electrode (MEA) and the repeated positioning error of the mechanism for performing the stacking operation, the stack structure is easily dislocated, thereby affecting the quality of the fuel cell.

Therefore, in order to ensure stacking accuracy, positioning is required at the time of stacking. However, the common positioning method of the stacking jig has a series of problems of high debugging difficulty, high requirement on equipment precision and the like, and thus the positioning precision is not high.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a stack jig capable of improving the positioning accuracy, aiming at the problem of low positioning accuracy of the existing stack jig.

A pile piles up tool for stacking the lamination that offers a plurality of interior locating holes, pile piles up tool includes:

a base; and

an inner positioning assembly comprising:

the inner positioning seat is fixed on the base, and a plurality of inner positioning rods can be arranged on the inner positioning seat;

a mounting bracket mounted to the base;

the jack catch righting mechanism is slidably mounted on the mounting frame, the jack catch righting mechanism can clamp the inner positioning rods and can operatively slide along the extension direction of the inner positioning rods, and the lamination can be sleeved on the inner positioning rods and borne on the jack catch righting mechanism.

In one embodiment, the inner positioning assembly further comprises an inner positioning servo mechanism, and the inner positioning servo mechanism is in transmission connection with the jaw centering mechanism to drive the jaw centering mechanism to slide along the inner positioning rod.

In one embodiment, the inner positioning servo mechanism is used for driving the jaw centering mechanism to perform intermittent sliding according to a preset frequency so as to adjust the height of the lamination on the jaw centering mechanism.

In one embodiment, the inner positioning assembly further comprises a height sensor for acquiring height information of the lamination on the jaw centering mechanism, and the inner positioning servo mechanism adjusts the step pitch of intermittent sliding of the jaw centering mechanism according to the height information so as to adjust the height of the lamination to a preset height.

In one embodiment, the jaw centering mechanism includes a clamping state clamped with the inner positioning rod and an opening state separated from the inner positioning rod, and is switchable between the clamping state and the opening state.

In one embodiment, the jaw centering mechanism comprises:

a connecting plate slidably mounted to the mounting bracket;

one end of the righting claw is mounted on the connecting plate, a bayonet used for clamping the inner positioning rod is formed at the other end of the righting claw, and the righting claw is telescopic relative to the connecting plate along the direction perpendicular to the inner positioning rod.

In one embodiment, an air inlet cavity is formed inside the righting claw, a mounting hole communicated with the air inlet cavity is formed in the inner wall of the bayonet, and a positioning piece is mounted in the mounting hole.

In one embodiment, the positioning device further comprises an outer positioning assembly, the outer positioning assembly comprises an outer positioning seat and a plurality of outer flanges which are installed on the outer positioning seat and arranged along the circumferential direction of the inner positioning seat, the plurality of outer flanges are surrounded to form an outer positioning space, and the inner positioning seat is located in the outer positioning space.

In one embodiment, the outer retaining edges are plate-shaped, and two adjacent outer retaining edges are perpendicular to each other, so that the outer positioning space is rectangular.

In one embodiment, the positions of the outer flanges on the outer positioning seat are adjustable to adjust the size of the outer positioning space.

In one embodiment, the outer positioning seats are slidably mounted on the plurality of outer flanges, and the outer positioning assembly further includes an outer positioning servo mechanism, and the outer positioning servo mechanism is in transmission connection with the outer flanges to drive the outer flanges to slide along the outer positioning seats.

In one embodiment, the outer positioning seat is provided with a plurality of guide grooves, and the outer positioning servo mechanism includes:

a scroll rotatably mounted to the base, the scroll having a wrap on a surface thereof;

the connecting shafts are respectively arranged in the guide grooves in a penetrating mode, one end of each connecting shaft is fixedly connected with the outer flange, and the other end of each connecting shaft is meshed with the scroll; and

and the driving piece is in transmission connection with the scroll disc so as to drive the scroll disc to rotate.

Above-mentioned electric pile piles up tool adopts interior locating lever to fix a position the lamination, so low and the debugging simple to the required precision of equipment. Furthermore, the claw righting mechanism is supported by the mounting frame arranged on the base, and can support the inner positioning rod clamped by the claw righting mechanism. When stacking the initial, the jack catch righting mechanism can be clamped at a position higher than the inner positioning rod, namely, at a position farther away from the inner positioning seat, so that the longer inner positioning rod can be effectively righted and reinforced, and the deflection of the longer inner positioning rod is avoided. The jaw centering mechanism is operable to progressively lower along the inner positioning rod as the laminations are stacked. At the moment, the claw righting mechanism can righting the inner positioning rod, and the lamination inserted into the inner positioning rod can also play a further righting and reinforcing role for the inner positioning rod. Therefore, the positioning accuracy of the stack can be effectively improved.

Drawings

Fig. 1 is a front view of a stack jig according to a preferred embodiment of the present invention;

FIG. 2 is a top view of the stack jig shown in FIG. 1;

FIG. 3 is a side view of a stack jig according to a preferred embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along A-B of the stack jig shown in FIG. 3;

FIG. 5 is a cross-sectional view of a jaw centering mechanism in the stack jig shown in FIG. 1;

FIG. 6 is an isometric view of an outer positioning assembly in the stack fixture of FIG. 1;

fig. 7 is a schematic structural view of a lamination stack stacked by the stack stacking jig of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, 2 and 7, the present invention provides a stack stacking jig 10 for stacking a stack of laminations 20. A plurality of laminations 20 can be sequentially stacked on the stack jig 10 to form a multi-layer structure, and then the lamination is pressed and fixed by a press machine to obtain the fuel cell stack.

The stack 20 includes bipolar plates and Membrane Electrodes (MEAs) which are alternately stacked to form a stack. The lamination 20 is provided with a plurality of inner positioning holes 21, and the plurality of inner positioning holes 21 are respectively matched with the plurality of inner positioning rods 30 to realize the positioning of the lamination 20. The inner positioning hole 21 can be a round hole, a square hole or a triangular hole. Accordingly, the inner positioning rod 30 may be a round rod, a square rod, or a triangular rod. In the embodiment, the inner positioning hole 21 is a circular hole, so the inner positioning rod 30 is a circular rod.

The inner positioning rod 30 may be a metal rod or a plastic insulating rod. Wherein, the rigidity of the inner positioning rod 30 made of metal material is good, and the positioning precision is more reliable. In order to avoid short circuit of the electric pile, the metal rod needs to be taken out before or after the pressing. The inner positioning rod 30 is easily removed before the press-fastening, but may cause the displacement of the lamination 20, thereby reducing the accuracy of the stack. After consolidation, the inner positioning rod 30 is difficult to remove and is prone to damage to the laminations 20, since the laminations 20 are already consolidated.

Therefore, in order to ensure the stacking accuracy of the stack and avoid damage to the lamination 20, the inner positioning rod 30 is generally made of a plastic insulating material. Thus, the inner positioning rod 30 can be left in the pressed stack, and only the parts protruding from the two ends of the electric push rod need to be cut off.

Referring to fig. 3 and 4, the stack jig 10 according to the preferred embodiment of the present invention includes a base 100 and an inner positioning assembly 200.

The base 100 is load bearing and is typically formed from a mechanically strong stainless steel, alloy material. The inner positioning assembly 200 includes an inner positioning socket 210, a mounting bracket 220, and a jaw centering mechanism 230.

The inner positioning seat 210 is fixed to the base 100. The inner positioning seat 210 may be fixedly connected to the base 100 in various manners such as clamping, screwing, welding, etc., or may be integrated with the base 100. The inner positioning socket 210 is used for carrying the end plate 40 of the stack. Therefore, a smooth bearing surface can be formed on the inner positioning seat 210 to facilitate the positioning of the end plate 40. The end plates 40 are typically two and are clamped to opposite sides of the stack. One of the end plates 40 is pre-positioned on the inner positioning seat 210, and after the lamination 20 is completely stacked, the other end plate 40 is covered on the other side of the lamination 20.

Further, a plurality of inner positioning rods 30 may be disposed on the inner positioning seat 210. Specifically, the inner positioning rods 30 may be first installed on the end plate 40, and then the end plate 40 is placed on the inner positioning seat 210, so that the plurality of inner positioning rods 30 vertically extend along the bearing surface. In addition, a mounting hole (not shown) matching with the inner positioning rod 30 may be formed in the inner positioning seat 210, and the inner positioning rod 30 is inserted into the mounting hole and passes through the end plate 40, so as to mount and fix the inner positioning rod 30.

A mounting bracket 220 is mounted to the base 100 for supporting the inner positioning assembly 200. The mounting bracket 220 may be fixedly connected to the base 100 by welding, screw fastening, or the like, or may be integrally formed with the base 100. Specifically, in the present embodiment, the mounting frame 220 includes two opposite triangular plates (not shown), and a bottom plate and a side plate connecting the two triangular plates. Thus, the mounting bracket 220 has high supporting strength.

Jaw centering mechanism 230 is slidably mounted to mounting bracket 220. In particular, the jaw centering mechanism 230 may be slidably mounted via a rail disposed on the mounting bracket 220. The jaw centering mechanism 230 may clamp the inner positioning rod 30. Wherein, the jaw centering mechanism 230 can be formed with a structure similar to a clip or a collar, so as to clamp the inner positioning rod 30. It should be noted that the jaw centering mechanism 230 may always maintain the clamping with the inner positioning rod 30, or may only achieve the clamping in a specific state.

The plurality of inner positioning rods 30 may be held by a plurality of inner positioning assemblies 200, respectively, or by one inner positioning assembly 200 including a plurality of jaw centering mechanisms 230. As shown in fig. 2, the present solution adopts 4 inner positioning rods 30 to realize positioning. Wherein two inner positioning assemblies 200 are oppositely arranged and each jaw centering mechanism 230 can clamp 2 inner positioning rods 30. The jaw centering mechanism 230 provides a lateral supporting force to the inner positioning rod 30 clamped by the jaw centering mechanism by the supporting function of the mounting frame 220, so that the inner positioning rod 30 is more stable.

Further, the jaw centering mechanism 230 is operable to slide along the extending direction of the inner positioning rod 30. As it slides, the jaw centering mechanism 230 may grip different locations of the inner positioning rod 30, thereby providing support for the inner positioning rod 30 from different locations.

In this embodiment, the inner positioning assembly 200 further includes an inner positioning servo 240. An inner positioning servo 240 is drivingly connected to the jaw centering mechanism 230 to drive the jaw centering mechanism 230 to slide along the inner positioning rod 30.

The inner positioning servo mechanism 240 can be a power element such as a motor and a cylinder and a transmission component matched with the power element. Specifically, the inner positioning servo mechanism 240 is an electric cylinder, which directly outputs linear motion to drive the jaw centering mechanism 230 to stably slide along the mounting frame 220. Wherein, interior positioning servo 240 can be connected with the host computer communication of the whole pile processing lines of control to its working process is controlled by the host computer, thereby is favorable to realizing the production automation.

In this embodiment, the jaw centering mechanism 230 includes a clamped state and an open state, and is switchable between the clamped state and the open state. In the clamping state, the jaw righting mechanism 230 clamps the inner positioning rod 30; in the open state, the jaw centering mechanism 230 is separated from the inner positioning rod 30.

That is, the jaw centering mechanism 230 does not always maintain a clamped state with the inner positioning rod 30. The jaw centering mechanism 230 may be switched to the open state as it slides along the inner positioning rod 30. So, jack catch righting mechanism 230 will not take place the contact with interior locating rod 30 in the slip in-process, just also can not cause the pulling to interior locating rod 30 yet, is favorable to further promoting interior locating rod 30's stability. After sliding in place, the jaw centering mechanism 230 is switched to the clamping state, and the inner positioning rod 30 can be supported again.

It should be noted that in other embodiments, the jaw centering mechanism 230 may be always clamped to the inner positioning rod 30, and only need to ensure that the jaw centering mechanism 230 can slide along the inner positioning rod 30 while being clamped. For example, a collar (not shown) may be provided at the end of the jaw centering mechanism 230, the inner diameter of which corresponds to the outer diameter of the inner positioning rod 30. Jaw centralizer mechanism 230 is sleeved with inner positioning rod 30 by a collar. In this way, the jaw centering mechanism 230 can slide along the inner positioning rod 30 while providing stable lateral support for the inner positioning rod 30.

Before the laminations 20 are stacked, the jaw centering mechanism 230 is adjusted to engage the inner positioning rod 30. At this time, the lamination 20 sleeved on the inner positioning rod 30 will bear on the claw centering mechanism 230, and will not directly fall onto the end plate 40 on the inner positioning seat 210.

Referring to fig. 5, in the embodiment, the claw centering mechanism 230 includes a connecting plate 231 and a centering claw 233. Wherein the connection plate 231 is slidably mounted to the mounting bracket 220; the centering claw 233 has one end mounted to the link plate 231 and the other end formed with a bayonet 2331 for clamping the inner positioning rod 30. Also, the centering claws 233 are retractable with respect to the link plate 231 in a direction perpendicular to the inner positioning rod 30.

Specifically, the mounting bracket 220 is generally substantially elongated and aligned with the extension direction of the inner positioning rod 30. The connection plate 231 slides in a length direction of the mounting block 220, that is, the connection plate 231 can slide in an extending direction of the inner positioning rod 30. The centering claws 233 can be mounted by telescopic cylinders 235 and the connecting plate 231. The centering claws 233 are retracted relative to the connecting plate 231 and gradually moved away from the inner positioning rod 30. When the stacking thickness of the lamination 20 in the stack stacking jig 10 reaches the requirement of the stack, the centering claws 233 can be retracted. In this manner, the laminations 20 originally carried on the jaw centering mechanism 230 are transferred to the end plate 40 to facilitate subsequent staking operations.

As shown in fig. 2, the centering claw 233 is horizontally extendable and retractable by a telescopic cylinder 235 so as to be away from or close to the inner positioning rod 30. Obviously, in other embodiments, the centering claws 233 can also achieve the above-mentioned purpose by rotating.

Wherein, the connection plate 231 is of an axisymmetric structure, and the middle part thereof is provided with a notch (not shown). The mounting frame 220 is inserted into the slot and connected to the inner wall of the slot, so that the connection plate 231 is slidably mounted. Further, two opposite ends of the connection plate 231 are respectively provided with a righting claw 233. In this way, the entire jaw centering mechanism 230 is more evenly loaded, which is beneficial for maintaining stability of the stacking process.

Further, in this embodiment, an air inlet chamber 2332 is formed in the centering claw 233, a mounting hole 2333 communicating with the air inlet chamber 2332 is formed in the inner wall of the bayonet 2331, and a positioning member 2334 is mounted in the mounting hole 2333.

The positioning member 2334 can be a block, sphere, etc. structure. When the air is pumped into the inlet chamber 2332, the positioning member 2334 will extend outward under the effect of the difference in pressure between the inside and outside, thereby switching the jaw centering mechanism 230 to the clamped state; when the air intake chamber 2332 is exhausted and depressurized, retainer 2334 will retract, thereby switching the jaw centering mechanism 230 to the open state. Therefore, the switching of the states of the jaw righting mechanism 230 can be realized by controlling gas to enter and exit, and the automatic production is favorably realized.

The stack jig 10 is used to stack the stacked sheets 20, and the general flow is as follows:

at the initial stage of stacking, the inner positioning rod 30 and the end plate 40 are installed on the inner positioning seat 210, and the jaw centering mechanism 230 is clamped at a position of the inner positioning rod 30 far from the bearing surface. Thus, the long inner positioning rod 30 can be effectively reinforced by the transverse support of the jaw righting mechanism 230, and the deflection of the inner positioning rod is avoided.

The jaw centering mechanism 230 is operable to progressively lower along the inner positioning rod 30 as the laminations 20 are stacked. At this time, not only the claw centering mechanism 230 can continue to center the inner positioning rod 30, but also the lamination 20 inserted into the inner positioning rod 30 can play a further role in centering and reinforcing the inner positioning rod 30. Therefore, the inner positioning rod 30 can maintain high stability throughout the stacking of the lamination sheets 20, and thus the positioning accuracy is high.

Moreover, the lamination 20 is positioned by adopting the mode that the inner positioning rod 30 is matched with the inner positioning hole 21, and the inner positioning rod 30 is only required to be aligned with the corresponding inner positioning hole 21. Therefore, the precision requirement on the stacking equipment is low, the debugging difficulty can be reduced, and the time can be saved.

During the stacking process, the claw centering mechanism 230 may descend at a constant speed at a preset rate along the inner positioning rod 30, or may intermittently slide at a preset frequency and at a preset step pitch.

In this embodiment, the inner positioning servo 240 is used to drive the jaw centering mechanism 230 to intermittently slide according to a predetermined frequency, so as to adjust the height of the lamination 20 on the jaw centering mechanism 230.

The height of the laminations 20 refers to the distance between the outermost lamination 20 on the jaw centralizer mechanism 230 and the inner locating seat 210. Referring to fig. 1 and 3, the distance between the uppermost lamination 20 of jaw centering mechanism 230 and inner positioning seat 210, i.e., distance D, is the height of lamination 20.

Specifically, the inner positioning servo mechanism 240 may be controlled by an upper computer, and the preset frequency may be consistent with the discharging frequency of the lamination 20. I.e. each new lamination 20, the jaw centering mechanism 230 is driven one step down. Wherein the step distance can also be preset to the thickness of one lamination 20. That is, each new lamination 20 is added, the jaw centering mechanism 230 is lowered by the thickness of one lamination 20. In this way, the height of the stack 20 on the jaw centralizer 230 can be kept consistent at all times. Thus, each lamination 20 is discharged at the same height.

On one hand, the heights of the discharged materials are consistent. Therefore, the stacking equipment only needs to debug one stacking posture, so that the debugging difficulty can be greatly reduced, and the debugging workload is reduced. On the other hand, the precision error caused by different discharging heights can be avoided, so that the stacking reliability and the final yield of the lamination 20 can be improved.

Further, in this embodiment, the inner positioning assembly 200 further comprises a height sensor 250, and the height sensor 250 is used for acquiring the height information of the lamination 20 on the jaw centering mechanism 230. Furthermore, the inner positioning servo 240 adjusts the pitch of the jaw centering mechanism 230 for intermittent sliding according to the height information to adjust the height of the lamination 20 to a preset height.

Specifically, the height sensor 250 is typically a grating sensor, and can be communicatively coupled to an upper computer. The upper computer compares the height information obtained by the height sensor 250 with a preset height to generate a control instruction. Therefore, the step distance of the intermittent motion of the jaw centering mechanism 230 is not fixed, but is adjusted in real time.

This is because the stack 20 may warp or the thickness of each stack 20 may not be exactly the same, and there may be some difference in thickness, so the increment in the height of the stack 20 in the jaw centralizer 230 may be different for each new stack 20. The height sensor 250 monitors the height information in real time, so that the step distance of each sliding of the jaw righting mechanism 230 is the same as the thickness of the newly added lamination 20 at the last time, and errors caused by warping and thickness difference of the lamination 20 are eliminated.

Assuming that the predetermined height is 20 cm, the height becomes 20.001 cm after a new lamination 20 is added. At this time, there is a height difference of 0.001 cm between the actual height and the preset height. Therefore, according to the control command generated by the upper computer, the step distance of the next descending of the claw centering mechanism 230 driven by the internal positioning servo mechanism 240 is 0.001 cm.

It should be noted that, in other embodiments, the height sensor 250 may further include a light emitter and a light receiver, and the light emitter and the light receiver are disposed opposite to each other and located at the preset height. When the lamination 20 is newly added, the light emitted by the light emitter is blocked, and the light receiver does not receive the light. At this point, the internal positioning servo 240 drives the jaw centering mechanism 230 down until the light is again received by the light receiver.

Referring to fig. 6, in the present embodiment, the stack fixture 10 further includes an outer positioning assembly 300, and the outer positioning assembly 300 includes an outer positioning base 310 and a plurality of outer ribs 320. A plurality of outer ribs 320 are mounted on the outer positioning base 310 and arranged along the circumference of the inner positioning base 210 to enclose the outer positioning space 101. Moreover, the inner positioning socket 210 is located in the outer positioning space 101.

Specifically, the outer positioning seat 310 may be fixedly connected to the base 100 in various manners such as clamping, screwing, welding, etc., or may be integrated with the base 100. In this embodiment, the outer positioning seat 310 is integrated with the base 100 and is stacked with the inner positioning seat 210.

The outer ribs 320 can also be fixedly mounted with the outer positioning seat 310 by various methods such as clamping, screwing, welding, and the like, so as to form the outer positioning space 101 with a fixed size. In addition, the plurality of outer ribs 320 can also be movably mounted with the outer positioning seat 310, so as to form the outer positioning space 101 with adjustable size.

The outer positioning space 101 can receive the lamination sheets, and when stacking, the lamination sheets 20 are sequentially stacked in the outer positioning space 101. Thus, the outer rim 320 provides support to the laminations 20 from the outer edges thereof, thereby preventing the laminations 20 from tilting after being stacked too high. That is, outer rims 320 may provide additional support to inner positioning rod 30, thereby further preventing inner positioning rod 30 from skewing. The positioning accuracy for laminations 20 is further enhanced by the cooperation of outer positioning assembly 300 with inner positioning assembly 200.

In addition, in the scheme, the positioning precision of the lamination 20 is controlled by the matching of the inner positioning rod 30 and the inner positioning hole 21, and the outer flange 320 only plays an auxiliary supporting role, so that the precision requirement on the outer flange 320 is low, and accurate debugging is not needed.

The outer rib 320 may be in various forms as long as the outer positioning space 101 for limiting the lamination 20 can be formed. For example, the outer rim 320 may be a plurality of limiting rods extending vertically along the surface of the outer positioning seat 310.

Further, in the present embodiment, the outer ribs 320 are plate-shaped, and two adjacent outer ribs 320 are perpendicular to each other, so that the outer positioning space 101 is rectangular.

Generally, the lamination 20 has a rectangular shape, so that the rectangular outer positioning space 101 can better match with the outer contour of the lamination 20 to obtain better supporting effect. Since the outer rib 320 is plate-shaped, it is in surface contact with the edge of the lamination 20, so that the contact area is large, and the abrasion of the lamination 20 in the supporting process can be effectively avoided. In addition, in order to ensure that the dimensions of the outer positioning space 101 in the extending direction of the inner positioning rod 30 are consistent, the plurality of outer ribs 320 are also perpendicular to the surface of the outer positioning seat 310. As shown in fig. 6, the 4 plate-shaped outer ribs 320 are perpendicular to each other two by two.

In addition, in order to reinforce the supporting strength of the outer rib 320, a triangular supporting plate 321 is disposed on a side of the outer rib 320 facing away from the outer positioning space 101.

Further, the outer flange 320 is provided with a strip-shaped groove 323 for the claw centering mechanism 230 to pass through. The strip-shaped groove 323 can not only form a clearance for the jaw centering mechanism 230, but also guide the jaw centering mechanism 230 through the limit of the inner wall thereof.

In this embodiment, the position of the outer rim 320 on the outer positioning seat 310 is adjustable to adjust the size of the outer positioning space 101.

On the one hand, by adjusting the dimensions of the outer positioning space 101, stacking can be achieved for different sizes of laminations 20. Thereby expanding the application range of the stack jig 10. On the other hand, after the lamination 20 is stacked and pressed, the outer positioning space 101 can be expanded, thereby facilitating the stack to be taken out.

In this embodiment, the mounting frame 220 can be further mounted to the base 100 through the outer rib 320. Wherein, the mounting frame 220 can be fixed on the outer rib 320 by a screw fastening manner. As the outer rib 320 moves, the position of the mounting bracket 220 may also change relative to the base 110.

Also, the height sensor 250 may be disposed at an edge of the outer rib 320 to adjust a position according to an out-of-dimension variation of the outer positioning space 101, thereby enabling more accurate height information.

There are various ways to adjust the position of the outer rib 320. For example, a strip-shaped hole may be formed in the outer positioning seat 310, and the outer rib 320 is mounted on the strip-shaped hole by a threaded fastener. The threaded fastener is loosened, the outer rib 320 slides along the bar-shaped hole, and then the threaded fastener is tightened, so that the position of the outer rib 320 on the outer positioning seat 310 can be changed.

Further, in the present embodiment, a plurality of outer ribs 320 are slidably mounted on the outer positioning seat 310. Moreover, the outer positioning assembly 300 further includes an outer positioning servo mechanism 330, and the outer positioning servo mechanism 330 is in transmission connection with the plurality of outer ribs 320 to drive the plurality of outer ribs to slide along the outer positioning seat 310.

Specifically, the external positioning servo 330 may be a power element such as a motor or a cylinder, and a transmission component adapted to the power element. The outer ribs 320 slide along the outer positioning seat 310 under the driving of the outer positioning servo mechanism 330, so as to realize outward expansion or inward contraction of the outer positioning space 101. The external positioning servo mechanism 330 can be in communication connection with an upper computer controlling the whole electric pile processing production line, and the working process of the upper computer is controlled by the upper computer, so that production automation is facilitated.

The outer rib 320 may be slidably mounted to the outer positioning seat 310 in various ways. Referring to fig. 4 and fig. 6 again, in the present embodiment, the outer positioning seat 310 is provided with a linear guide rail 311, and a sliding block 325 is disposed at a position corresponding to the outer flange 320. The sliding block 325 is matched with the linear guide rail 311 so that the outer rib 320 can slide relative to the outer positioning seat 310. Moreover, in order to ensure the stability of the sliding process, each outer rib 320 corresponds to two parallel linear guides 310 which are arranged at intervals.

Further, referring to fig. 4 again, in the present embodiment, the outer positioning servo 330 includes a scroll plate 331, a connecting shaft 332 and a driving member 333.

The scroll 331 may be rotatably installed at the base 100. Specifically, the scroll 331 may be mounted by a bearing to rotate. The surface of the scroll plate 331 has a wrap (not shown). Specifically, in the present embodiment, the scroll 331 and the outer positioning base 310 are stacked. As shown in fig. 4, the scroll 331 is disposed below the outer positioning seat 310.

The connecting shafts 332 are multiple, and each outer rib 320 corresponds to at least one connecting shaft. A plurality of guide grooves (not shown) are formed in the outer positioning seat 310, and the extending direction of the guide grooves is the same as the sliding direction of the corresponding outer flanges 320. The plurality of guide grooves are engaged with the plurality of connecting shafts 332, and are respectively used for driving the plurality of outer ribs 230 to slide. Further, the connecting shafts 332 are inserted into the guide grooves, and one end of each connecting shaft 332 is fixedly connected to the outer flange 320, and the other end thereof is engaged with the scroll.

The scroll 331 rotates to drive one end of the plurality of connecting shafts 332 to slide along the wraps at the same time, thereby forcing the connecting shafts 332 to slide linearly along the guide grooves. Therefore, the circular motion of the scroll 331 is converted into the linear motion of the outer ribs 230, and the synchronous opening and closing of the plurality of outer ribs 230 is achieved.

It should be noted that, in order to make the connecting shaft 332 better engage with the scroll, a scroll claw 334 may be further provided at one end of the connecting shaft 332, and the scroll may be engaged with the scroll through the scroll claw 334. Obviously, the tip of the connecting shaft 332 may be directly provided in a shape similar to a scroll claw, so that the scroll claw 334 is omitted.

In addition, the synchronous structure formed by the matching of the scroll 331 and the connecting shaft 332 has a self-locking function. When the stacked lamination 20 is pressed and fixed, even if a lateral scratching force is caused by the unevenness of the lamination 20, the outer flange 320 can overcome the lateral scratching force under the action of the self-locking capability, so that the stability of the outer positioning space 101 is maintained, and the yield of the stack formed by pressing and fixing the lamination 20 is further ensured.

The driving member 333 is drivingly connected with the scroll 331 to drive the scroll 331 to rotate. Specifically, the driving member 333 generally includes a motor and a speed reducer. The output shaft of the motor is connected with the input shaft of the speed reducer, and the output shaft of the speed reducer and the scroll 331 can be respectively provided with gears which are meshed with each other, so as to realize torque transmission.

The stack jig 10 uses the inner positioning rod 30 to position the lamination 20, so that the accuracy requirement on the equipment is low and the debugging is simple. Further, the jaw centering mechanism 230 provides support for the inner positioning rod 30 held by the base 100 through the mounting bracket 220 mounted on the base. At the beginning of stacking, the claw centering mechanism 230 can be clamped at a position where the inner positioning rod 30 is higher, i.e. farther from the inner positioning socket 210, so that the longer inner positioning rod 30 can be effectively centered and reinforced to avoid the deflection thereof. The jaw centering mechanism 230 is operable to progressively lower along the inner positioning rod 30 as the laminations 20 are stacked. At this time, not only the claw centering mechanism 230 can center the inner positioning rod 30, but also the lamination 20 inserted into the inner positioning rod 30 can play a further role in centering and reinforcing the inner positioning rod 30. Therefore, the positioning accuracy of the stack can be effectively improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a pile up tool for pile up the lamination of offering a plurality of interior locating holes, its characterized in that, pile up the tool and include:

a base; and

an inner positioning assembly comprising:

a mounting bracket mounted to the base;

2. The stack jig of claim 1, wherein the inner positioning assembly further comprises an inner positioning servo mechanism in driving connection with the claw centering mechanism to drive the claw centering mechanism to slide along the inner positioning rod.

3. The stack jig according to claim 2, wherein the internal positioning servo mechanism is configured to drive the claw centering mechanism to intermittently slide according to a predetermined frequency so as to adjust the height of the lamination on the claw centering mechanism.

4. The stack stacking jig according to claim 3, wherein the inner positioning assembly further comprises a height sensor for acquiring height information of the laminations on the claw centering mechanism, and the inner positioning servo mechanism adjusts the step pitch of the claw centering mechanism for intermittent sliding according to the height information so as to adjust the height of the laminations to a preset height.

5. The stack jig according to claim 1, wherein the claw centering mechanism includes a clamping state in which it is clamped by the inner positioning rod and an opening state in which it is separated from the inner positioning rod, and is switchable between the clamping state and the opening state.

6. The stack jig of claim 5, wherein the claw centering mechanism comprises:

a connecting plate slidably mounted to the mounting bracket;

7. The stack jig according to claim 6, wherein an air inlet cavity is formed inside the centering claw, a mounting hole communicated with the air inlet cavity is formed in an inner wall of the bayonet, and a positioning member is mounted in the mounting hole.

8. The stack jig of claim 1, further comprising an outer positioning assembly, wherein the outer positioning assembly comprises an outer positioning seat and a plurality of outer flanges installed on the outer positioning seat and arranged along the circumference of the inner positioning seat, a plurality of outer flanges are arranged to form an outer positioning space, and the inner positioning seat is located in the outer positioning space.

9. The stack jig of claim 8, wherein the outer ribs are plate-shaped, and two adjacent outer ribs are perpendicular to each other, so that the outer positioning space is rectangular.

10. The stack jig of claim 8, wherein the position of the plurality of outer ribs on the outer positioning seat is adjustable to adjust the size of the outer positioning space.

11. The stack jig of claim 10, wherein a plurality of the outer flanges are slidably mounted on the outer positioning seats, and the outer positioning assembly further comprises an outer positioning servo mechanism, and the outer positioning servo mechanism is in transmission connection with the plurality of outer flanges to drive the plurality of outer flanges to slide along the outer positioning seats.

12. The stack jig of claim 11, wherein the outer positioning seat has a plurality of guide grooves formed thereon, and the outer positioning servo mechanism comprises: