CN218505283U - Dry-method double-steel-belt film forming equipment - Google Patents

Abstract

The utility model discloses a dry method double steel belt film forming device, which comprises a frame, a lower steel belt mechanism, an upper steel belt mechanism positioned above the lower steel belt mechanism, a heating mechanism and a calendaring mechanism, wherein the lower steel belt mechanism is arranged on the upper steel belt mechanism; the lower steel belt mechanism comprises a lower driving roller, a lower driven roller and a lower steel belt sleeved on the lower driving roller and the lower driven roller, the lower driving roller and the lower driven roller are respectively arranged on the rack, and a feeding area is arranged above the lower driven roller and the lower steel belt; go up steel band mechanism and include the drive roller, go up the driven roller and cup joint the last steel band on last drive roller and last driven roller, it sets up respectively with last driven roller to go up the drive roller in the frame, it corresponds with lower drive roller to go up the drive roller, it is located to go up the driven roller between drive roller and the reinforced district, it has the clearance to go up between steel band and the lower steel band. The utility model discloses can realize serialization production, disposable filming, and difficult fracture, improve production efficiency, reduction in production cost.

Description

Dry-method double-steel-belt film forming equipment

Technical Field

The utility model relates to a lithium cell makes technical field, specificly relates to a two steel band filming equipment of dry process.

Background

Currently, a pair of roll mills are generally adopted to manufacture dry-process electrode membranes of lithium batteries. The pair roller mill usually includes two warming mill that are relative setting, when making lithium cell dry process electrode diaphragm, add the electrode powder between two warming mill earlier, then extrude the electrode powder into the electrode diaphragm under the rotation effect of two warming mill, this kind of mode has the electrode powder film forming usually and can not realize serialization production and easily appear cracked risk, and the electrode diaphragm that forms need carry out the roll-in repeatedly many times through other roll squeezer in order to realize reducing thin and revising the electrode diaphragm, just so can obtain the electrode diaphragm of required thickness, therefore can't once form the membrane, can't carry out mass production, and the work efficiency is reduced, and the production cost is increased.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of prior art, the utility model provides a two steel band film-forming equipment of dry process can realize serialization production, once only become the membrane, and difficult fracture can realize mass production, has improved production efficiency, reduction in production cost.

The utility model provides a technical scheme that its technical problem adopted is:

a dry-method double-steel-belt film forming device comprises a rack, a lower steel belt mechanism, an upper steel belt mechanism, a heating mechanism and a calendaring mechanism, wherein the upper steel belt mechanism, the heating mechanism and the calendaring mechanism are positioned above the lower steel belt mechanism; the lower steel belt mechanism comprises a lower driving roller, a lower driven roller and a lower steel belt sleeved on the lower driving roller and the lower driven roller, the lower driving roller and the lower driven roller are respectively arranged on the rack, a feeding area is arranged above the lower driven roller and the lower steel belt, and a lower heating module is arranged on one side of the lower driven roller, which is far away from the lower driving roller; the upper steel belt mechanism comprises an upper driving roller, an upper driven roller and an upper steel belt sleeved on the upper driving roller and the upper driven roller, the upper driving roller and the upper driven roller are respectively arranged on the rack, the upper driving roller corresponds to the lower driving roller, the upper driven roller is positioned between the upper driving roller and the feeding area, a gap is formed between the upper steel belt and the lower steel belt, the width of the gap is gradually reduced along the direction from the upper driven roller to the upper driving roller, and an upper heating module is arranged on one side of the upper driven roller, which is far away from the upper driving roller; the heating mechanism is arranged on the inner side of the lower steel belt and is positioned below the upper driven roller; the rolling mechanism is disposed between the lower driving roller, the upper driving roller, and the upper driven roller.

As a preferred technical scheme, the lower steel belt mechanism further comprises a lower driving module for driving the lower driving roller to rotate, the lower driving module comprises a lower driving motor and a lower speed reducer connected with the lower driving motor, and the lower speed reducer is connected with one end of the lower driving roller.

As a preferable technical scheme, the upper steel belt mechanism further comprises an upper driving module for driving the upper driving roller to rotate, the upper driving module comprises an upper driving motor and an upper speed reducer connected with the upper driving motor, and the upper speed reducer is connected with the upper driving motor.

According to the preferable technical scheme, the lower heating module comprises a lower heating cover and a lower heating pipe, the lower heating cover surrounds the periphery of the lower driven roller, one side of the lower heating cover, close to the lower driven roller, is provided with an opening, and is not in contact with the lower steel strip, the opening corresponds to the lower steel strip, a lower mounting portion is arranged in the lower heating cover, and the lower heating pipe is arranged in the lower mounting portion.

According to a preferable technical scheme, the upper heating module comprises an upper heating cover and an upper heating pipe, the upper heating cover surrounds the periphery of the upper driven roller, one side of the upper heating cover, close to the upper driven roller, is provided with an opening, the opening is not in contact with the upper steel strip and corresponds to the upper steel strip, an upper mounting portion is arranged in the upper heating cover, and the upper heating pipe is arranged in the upper mounting portion.

Preferably, the heating mechanism comprises a support arranged on the rack and a heater arranged at the top end of the support, and the heater corresponds to the lower steel strip and has a gap with the lower steel strip.

Preferably, the heater is a ceramic heater.

As a preferred technical scheme, the rolling mechanism comprises at least two pair-roller rolling assemblies, the two pair-roller rolling assemblies are respectively a first pair-roller rolling assembly and a second pair-roller rolling assembly, and the first pair-roller rolling assembly is arranged between the upper driven roller and the second pair-roller rolling assembly.

As a preferred technical scheme, the first counter roll rolling component comprises a first lower rolling roll, a first upper rolling roll and two first driving modules, the first upper rolling roll and the first lower rolling roll are arranged oppositely from top to bottom, the first lower rolling roll is arranged on the rack and positioned on the inner side of the lower steel strip and abutted to the lower steel strip, the first lower rolling roll is fixed relatively to the rack, the first upper rolling roll is arranged on the rack and positioned on the inner side of the upper steel strip and abutted to the upper steel strip, the first upper rolling roll can slide vertically relative to the rack, and the two first driving modules are used for driving the first upper rolling roll to slide vertically.

In a preferred embodiment, the first lower reduction roll and the first upper reduction roll are both heating rolls.

According to the preferable technical scheme, the second counter roll rolling assembly comprises a second lower rolling roll, a second upper rolling roll and two second driving modules, the second upper rolling roll and the second lower rolling roll are arranged oppositely from top to bottom, the second lower rolling roll is arranged on the rack and located on the inner side of the lower steel strip and abutted to the lower steel strip, the second lower rolling roll is relatively fixed to the rack, the second upper rolling roll is arranged on the rack and located on the inner side of the upper steel strip and abutted to the upper steel strip, the second upper rolling roll can slide up and down relative to the rack, and the two second driving modules are used for driving the second upper rolling roll to slide up and down.

Preferably, the second lower calendar roll and the second upper calendar roll are both heating rolls.

The beneficial effects of the utility model are that: the utility model discloses a lower steel band mechanism that sets up, go up steel band mechanism, heating mechanism and calendering mechanism, electrode powder film forming can realize serialization production, disposable film forming, and difficult fracture, need not to relapse the roll-in, can realize mass production, has improved production efficiency, reduction in production cost.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples.

FIG. 1 is a schematic structural diagram of a dry-process double-steel-strip film forming apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a rear view angle of the dry method double steel strip film forming equipment shown in FIG. 1;

FIG. 3 is a schematic front view of the dry method double steel strip film-forming apparatus shown in FIG. 1;

FIG. 4 is a schematic cross-sectional view of the dry method double steel strip filming apparatus shown in FIG. 1;

FIG. 5 is a schematic structural diagram of the dry method double-steel-belt film forming equipment shown in FIG. 1, wherein a lower steel belt, an upper driven roller, a lower heating module and an upper heating module are removed.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the connection/connection relations referred to in the patent do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection auxiliary components according to specific implementation conditions. The utility model discloses each technical feature in the creation can the interactive combination under the prerequisite that does not contradict conflict mutually.

Referring to fig. 1 to 5, an embodiment of the present invention provides a dry-method double-steel-strip film forming apparatus, which includes a frame 10, a lower steel-strip mechanism 20, an upper steel-strip mechanism 30 located above the lower steel-strip mechanism 20, a heating mechanism 40, and a rolling mechanism. The lower steel belt mechanism 20, the upper steel belt mechanism 30, the heating mechanism 40 and the rolling mechanism are arranged on the frame 10.

As shown in fig. 1 to 3, the frame 10 includes a base 12 and two side frames. The two side frames are respectively disposed at the front and rear sides of the top end of the base 12.

Each side frame includes a mounting plate 142, a first portion 143, and a second portion, respectively. The mounting plates 142 of the two side frames are respectively disposed at the front and rear sides of the top end of the base 12 and are disposed opposite to each other in the front-rear direction. The first and second portions 143 and 143 are arranged side by side along the length of the housing 10. The first portion 143 is a "date" shaped frame near the left end of the base 12. The first portion 143 has a first installation space and a second installation space, the first installation space and the second installation space are arranged side by side along the length direction of the rack 10, the first installation space is close to the second portion, and the second installation space is located between the first installation space and the left end of the base 12. The second portion includes vertical plates 1452, lower transverse plates 1453, upper transverse plates 1454, and inclined plates 1455. Lower and upper cross plates 1453, 1454 are in turn positioned above the corresponding mounting plate 142. Vertical plates 1452 are provided on top of the corresponding mounting plate 142. Vertical plate 1452 is near the right end of base 12. One end of lower transverse plate 1453 is disposed at the right end of first portion 143 and the other end is disposed at the top end of vertical plate 1452. Upper transverse plate 1454 has one end disposed at the right end of first portion 143 and the other end disposed at the top end of inclined plate 1455, and the bottom end of inclined plate 1455 is disposed at the top end of vertical plate 1452.

The upper steel belt mechanism 20 includes a lower driving roller 22, a lower driven roller 23, a lower steel belt 24 sleeved on the lower driving roller 22 and the lower driven roller 23, and a lower driving module for driving the lower driving roller 22 to rotate.

Both ends of the lower driving roller 22 are respectively provided at the left ends of the two first portions 143 through two bearing housings 222. Both ends of the lower driven roller 23 are respectively disposed on the top ends of the two mounting plates 142 through two bearing blocks 232. The lower driving roller 22 is near the left end of the base 12, and the lower driven roller 23 is near the right end of the base 12. The lower driven roller 23 and the lower driving roller 22 are the same in size, and the center of the lower driven roller 23 and the center of the lower driving roller 22 are located on the same horizontal line, so that the lower steel belt 24 is horizontally disposed. The lower driving module includes a lower driving motor 25 and a lower reducer 26, the lower driving motor 25 is disposed on the lower reducer 26, and the lower reducer 26 is disposed at a left end of one of the first portions 143. The output end of the lower driving motor 25 is connected to the input end of the lower speed reducer 26, and the output end of the lower speed reducer 26 is connected to one end of the lower driving roller 22. The lower driving roller 22 is used as a driving roller, and when the lower driving motor 25 drives the lower driving roller 22 to rotate through the lower speed reducer 26, the lower driven roller 23 can be driven to rotate under the action of the lower steel belt 24. In this embodiment, the lower driving roller 22 rotates in the counterclockwise direction, so that the lower steel belt 24 rotates in the counterclockwise direction, i.e., circulates in the counterclockwise direction, and the lower driven roller 23 rotates in the counterclockwise direction.

As shown in fig. 1 and 4, a feeding area 70 is provided above the lower driven roller 23 and the lower steel belt 24, and electrode powders (electrode powders are positive and negative electrode materials of a dry electrode of a lithium battery) can be fed onto the lower steel belt 24 through the feeding area 70, so that the electrode powders can be driven by the lower steel belt 24 to move in a direction close to the lower driving roller 22 and the upper driving roller 32.

In this embodiment, two baffles 72 are disposed above the lower driven roller 23 and the lower steel belt 24 in a front-to-back opposing manner, the length direction of the baffles 72 is the same as the length direction of the rack 10, and the feeding region 70 is formed between the two baffles 72. The width of the feeding zone 70 corresponds to the width of the lower steel strip 24. The two baffles 72 are respectively arranged on the two connecting plates 73, two connecting rods 74 are arranged at the top ends of the two connecting plates 73 in a penetrating manner, and two ends of each connecting rod 74 are respectively arranged on the two lower transverse plates 1453 of the second part.

The lower driven roller 23 is provided with a lower heating module at the side far away from the lower driving roller 22. The lower heating module is used for heating the lower steel belt 24, so that the electrode powder added to the lower steel belt 24 through the feeding area 70 can be heated through the lower steel belt 24, the temperature of the electrode powder heated by the lower steel belt 24 is 160-200 ℃, preferably 180 ℃, and the electrode powder heated by the lower steel belt 24 can be activated, so that the electrode powder can be extruded into a film at a high temperature.

As shown in fig. 1 and 4, the lower heating module includes a lower heating mantle 27 and a lower heating pipe 272 provided at the top end of the base 12, one side of the lower heating mantle 27 near the lower driven roller 23 has an arc surface, and the lower heating mantle 27 surrounds the outer periphery of the lower driven roller 23 through the arc surface. The length of the lower heating mantle 27 is slightly greater than the width of the lower steel strip 24, the side of the lower heating mantle 27 close to the lower driven roller 23 is opened corresponding to the lower steel strip 24, and a gap is provided between the side of the lower heating mantle 27 close to the driven roller 23 and the lower steel strip 24 so as not to contact the lower steel strip 24. The lower heating mantle 27 is provided with a lower mounting portion 271, the lower mounting portion 271 is arc-shaped, two ends of the lower mounting portion 271 are arranged on the inner walls of two sides of the lower heating mantle 27, and the lower mounting portion 271 surrounds the outer periphery of the lower driven roller 23 and has a gap with the lower steel belt 24. A lower heating pipe 272 is arranged in the lower mounting part 271, the lower heating pipe 272 is an electric heating pipe, for example, one end of the lower heating pipe 272 is used for being connected with an external power supply through a conducting wire, and a through hole for the conducting wire to pass through is arranged on the outer wall of one side of the lower heating cover 27. The lower heating pipe 272 is provided in plurality, and the plurality of lower heating pipes 272 are distributed at intervals along the circumferential direction of the lower mounting part 271. The number of the lower heating pipes 272 may be set according to actual conditions. The lower heating pipe 272 is energized to generate heat, thereby heating the lower steel strip 24.

In this embodiment, both ends of the lower driven roller 23 are slidably disposed on the top ends of the two mounting plates 142 through two bearing housings 232, respectively. Both ends of the lower driven roller 23 are slidable left and right on the top ends of the two mounting plates 142 via two bearing blocks 232. Specifically, the top ends of the two mounting plates 142 are respectively provided with a lower slide rail, and the two bearing seats 232 are respectively in sliding fit with the lower slide rails on the two mounting plates 142 and can slide left and right along the corresponding lower slide rails, so as to drive the lower driven rollers 23 to slide left and right.

The top ends of the two mounting plates 142 are respectively provided with a lower tensioning cylinder 28, and the cylinder shafts of the two lower tensioning cylinders 28 are respectively connected with the two bearing seats 232, so that the two bearing seats 232 can be driven to slide left and right through the two lower tensioning cylinders 28, and further the lower driven roller 23 can be driven to slide left and right. The adjustment of the tension of the lower steel strip 24 to tension the lower steel strip 24 is achieved by the provision of the lower tensioning cylinder 28.

The upper steel belt mechanism 30 includes an upper driving roller 32, an upper driven roller 33, an upper steel belt 34 sleeved on the upper driving roller 32 and the upper driven roller 33, and an upper driving module for driving the upper driving roller 32 to rotate.

Both ends of the upper driving roller 32 are respectively disposed at the left ends of the two first portions 143 through two bearing housings 322. The upper driving roller 32 corresponds to the lower driving roller 22. Both ends of the upper driven roller 33 are disposed at the top ends of the lower lateral plates 1453 of the two second portions through two bearing housings 332, respectively. The upper driven roller 33 is located between the upper driving roller 32 and the lower driven roller 23. There is a gap between upper steel strip 34 and lower steel strip 24. The upper driven roller 33 and the upper driving roller 32 are the same in size, and the center of the upper driven roller 33 is located above the center of the upper driving roller 32, so that the upper steel belt 34 is disposed obliquely with respect to the lower steel belt 24, and therefore, the width of the gap between the upper steel belt 34 and the lower steel belt 24 is gradually reduced in the direction from the upper driven roller 33 to the upper driving roller 32. The upper driving module includes an upper driving motor 35 and an upper reducer 36, the upper driving motor 35 is disposed on the upper reducer 36, and the upper reducer 36 is disposed at a left end of one of the first portions 143. The output end of the upper driving motor 35 is connected to the input end of the upper reducer 36, and the output end of the upper reducer 36 is connected to one end of the upper driving roller 32. The upper drive motor 35 corresponds to the lower drive motor 25, and the upper reduction gear 36 corresponds to the lower reduction gear 26. The upper driving roller 32 is used as a driving roller, the upper driven roller 33 is used as a driven roller, the upper steel belt 34 is used as a synchronous belt, and when the upper driving motor 35 drives the upper driving roller 32 to rotate through the upper speed reducer 36, the upper driven roller 33 can be driven to rotate under the action of the upper steel belt 34. The upper drive roller 32 rotates in the opposite direction to the lower drive roller 22, so that the upper steel belt 34 rotates in the opposite direction to the lower steel belt 24 and the upper driven roller 33 rotates in the opposite direction to the lower driven roller 23. In this embodiment, the upper driving roller 32 rotates in the clockwise direction, so that the upper steel belt 34 rotates in the clockwise direction, i.e., circulates in the clockwise direction, and the upper driven roller 33 rotates in the clockwise direction. The upper driving roller 32 has the same rotation speed as the lower driving roller 22, so that the upper steel belt 34 has the same rotation speed as the lower steel belt 24, and the upper driven roller 33 has the same rotation speed as the lower driven roller 23. In practical application, after the electrode powder enters the gap between the upper steel belt 34 and the lower steel belt 24 under the driving of the lower steel belt 24, the electrode powder can be squeezed by the interaction force of the upper steel belt 34 and the lower steel belt 24, so that the electrode powder forms an electrode membrane, and the formed electrode membrane can move towards the direction close to the upper driving roller 32 and the lower driving roller 22 under the driving of the upper steel belt 34 and the lower steel belt 24.

An upper heating module is arranged on one side of the upper driven roller 33 far away from the upper driving roller 32. The upper heating module is used for heating the upper steel belt 34, so that when electrode powder enters the gap under the driving of the lower steel belt 24, the electrode powder can be heated through the upper steel belt 34, the temperature for heating the electrode powder by the upper steel belt 34 is 160-200 ℃, preferably 180 ℃, and the electrode powder can be heated through the upper steel belt 34, so that the adhesive in the electrode powder can be activated, and the electrode powder can be extruded to form a film at high temperature.

As shown in fig. 4, the upper heating module includes an upper heating mantle 37 and an upper heating pipe 372, the upper heating mantle 37 is arc-shaped, the upper heating mantle 37 surrounds the outer circumference of the upper driven roller 33, the length of the upper heating mantle 37 is slightly greater than the width of the upper steel strip 34, one side of the upper heating mantle 37 close to the upper driven roller 33 is opened, the opening corresponds to the upper steel strip 34, and a gap is provided between one side of the upper heating mantle 37 close to the driven roller 33 and the upper steel strip 34 so as not to contact the upper steel strip 34. The upper heating mantle 37 is provided on the top ends of the upper transverse plates 1454 of the two second portions by mounting members 373, as shown in fig. 1 and 4. An upper mounting portion 371 is arranged in the upper heating cover 37, the upper mounting portion 371 is arc-shaped, two ends of the upper mounting portion 371 are arranged on the inner wall of two sides of the upper heating cover 37, and the upper mounting portion 371 surrounds the periphery of the upper driven roller 33 and has a gap with the upper steel belt 34. An upper heating pipe 372 is arranged in the upper mounting part 371, the upper heating pipe 372 is an electric heating pipe, one end of the upper heating pipe 372 is used for being connected with an external power supply through a lead, and a through hole for the lead to pass through is arranged on the outer wall of one side of the upper heating cover 37. The upper heating pipes 372 are plural, and the plural upper heating pipes 372 are distributed at intervals along the circumferential direction of the upper mounting portion 371. The number of the upper heating pipes 372 can be set according to actual conditions. The upper heating tube 372 is electrified to generate heat, so that the upper steel belt 34 can be heated.

In this embodiment, both ends of the upper driven roller 33 are slidably provided at the top ends of the lower lateral plates 1453 of the two second portions through the two bearing housings 332, respectively. Both ends of the upper driven roller 33 are slidable left and right on the top ends of the two second-part lower lateral plates 1453 through two bearing housings 332. Specifically, the top ends of the lower transverse plates 1453 of the two second portions are respectively provided with an upper slide rail, and the two bearing blocks 332 are respectively in sliding fit with the upper slide rails on the lower transverse plates 1453 of the two second portions and can slide left and right along the corresponding upper slide rails, so as to drive the upper driven roller 33 to slide left and right.

The top ends of the lower transverse plates 1453 of the two second parts are respectively provided with an upper tensioning cylinder 38, and the cylinder shafts of the two upper tensioning cylinders 38 are respectively connected with the two bearing blocks 332, so that the two bearing blocks 332 can be driven to slide left and right through the two upper tensioning cylinders 38, and the upper driven rollers 33 can be driven to slide left and right. Adjusting the tension of the upper steel belt 34 to tension the upper steel belt 34 may be accomplished by providing an upper tensioning cylinder 38.

As shown in fig. 4 and 5, the heating mechanism 40 is disposed inside the lower steel belt 24 and below the upper driven roller 33, the heating mechanism 40 is used for heating the lower steel belt 24, the temperature of the heating mechanism 40 for heating the lower steel belt 24 is 160-200 ℃, preferably 180 ℃, the lower steel belt 24 is heated by the heating mechanism 40 in the process that the lower steel belt 24 drives the electrode powder to move towards the direction close to the lower driving roller 22 and the upper driving roller 32, so that the electrode powder can be heated by the lower steel belt 24, and the temperature of the electrode powder can be kept constant, so that the electrode powder can be extruded into a film by the upper steel belt 34 and the lower steel belt 24.

In this embodiment, there are three heating mechanisms 40, and the three heating mechanisms 40 are sequentially disposed at intervals in a direction approaching the lower driving roller 22. It will be appreciated that the number of heating mechanisms 40 may be set as appropriate. Of the three heating mechanisms 40, the first heating mechanism 40 is located near the left end of the charging zone 70, the second heating mechanism 40 is located below the upper driven roller 33, and the third heating mechanism 40 is located on the side of the upper driven roller 33 away from the upper heating cover 37.

The heating mechanism 40 includes a bracket 42 and a square heater 43 provided at the top end of the bracket 42, both ends of the bracket 42 are respectively provided on two lateral coupling plates 14532, and the two lateral coupling plates 14532 are respectively provided on two lower lateral plates 1453 of the second portion. The number of the heaters 43 is three, and the three heaters 43 are arranged side by side along the length direction of the bracket 42, and it can be understood that the number of the heaters 43 can be arranged according to the actual situation.

The heater 43 is preferably a ceramic heater that generates heat to heat the lower steel strip 24, although it will be appreciated that the heater 43 may be other types of heaters.

In this embodiment, four passing rollers 44 are sequentially arranged along the direction from the lower driven roller 23 to the lower driving roller 22, as shown in fig. 4, the lower steel belt 24 passes over the four passing rollers 44, the four passing rollers 44 are close to the lower driven roller 23 for supporting the lower steel belt 24, after the electrode powder is added onto the lower steel belt 24 through the feeding area 70, the lower steel belt 24 usually deforms downward under the gravity of the electrode powder, and the lower steel belt 24 is supported by the four passing rollers 44, so that the deformation of the lower steel belt 24 can be avoided, and the lower steel belt 24 is ensured to be in a horizontal state. The heating mechanism 40 is provided between two adjacent rollers 44. Both ends of the roller 44 are respectively provided on the two lateral connection plates 14532 through two bearing housings 442. It will be appreciated that the number of rollers 44 may be set as appropriate.

As shown in fig. 4, scrapers 80 are respectively disposed at the lower driving roller 22, the lower driven roller 23, the upper driving roller 32, the upper driven roller 33, the inner side of the lower steel strip 24 and the inner side of the upper steel strip 34, and the scrapers 80 are disposed to scrape off electrode powder on the corresponding rollers and electrode powder on the corresponding inner sides of the steel strips.

The rolling mechanism is provided between the lower driving roller 22, the upper driving roller 32, and the upper driven roller 33, and is used for pressing the electrode membrane to achieve compaction, thinning, and correction of the electrode membrane.

Specifically, as shown in fig. 1 to 4, the rolling mechanism includes two pair-roller rolling assemblies, the two pair-roller rolling assemblies are a first pair-roller rolling assembly and a second pair-roller rolling assembly, respectively, and the first pair-roller rolling assembly is disposed between the upper driven roller 33 and the second pair-roller rolling assembly.

The first pair of roller rolling assemblies includes a first lower rolling roller 52, a first upper rolling roller 53 and two first driving modules. The first upper reduction roll 53 is disposed above the first lower reduction roll 52 and is disposed to be vertically opposite to the first lower reduction roll 52. The first lower rolling roll 52 is fixedly disposed at the bottom of the first mounting space of the first portions 143 by two bearing housings 522 at both ends thereof, so that the first lower rolling roll 52 is fixed relative to the frame 10. The first lower reduction roll 52 is positioned inside the lower steel strip 24 and abuts against the lower steel strip 24. The two ends of the first upper rolling roll 53 are slidably disposed on the inner walls of the first mounting spaces of the two first portions 143 through two bearing housings 532, respectively, and the first upper rolling roll 53 can slide up and down in the first mounting spaces of the two first portions 143, so that the first upper rolling roll 53 can slide up and down with respect to the frame 10. Specifically, the left end and the right end of each bearing seat 532 are respectively in sliding fit with the two slide rails 533, the two slide rails 533 are respectively arranged on the inner walls of the two sides of the corresponding first installation space, and each bearing seat 532 can slide up and down along the corresponding two slide rails 533, so that the first upper calendering roller 53 can be driven to slide up and down. First upper reduction rolls 53 are positioned inside upper steel strip 34 and abut upper steel strip 34. In practical application, since the first lower rolling roll 52 and the first upper rolling roll 53 are respectively abutted to the lower steel belt 24 and the upper steel belt 34, and the width of the gap is gradually reduced along the direction from the upper driven roll 33 to the upper driving roll 32, the first pressing of the electrode membrane can be realized through the first lower rolling roll 52 and the first upper rolling roll 53 to realize the first compaction, thinning and correction of the electrode membrane.

The first lower calender roll 52 and the first upper calender roll 53 are heating rolls, so that the lower steel strip 24 and the upper steel strip 34 can be heated through the first lower calender roll 52 and the first upper calender roll 53, the electrode membrane can be heated to activate the adhesive, and the electrode membrane can be conveniently extruded. And one end of the first lower calendering roll 52 and one end of the first upper calendering roll 53 are respectively provided with a conductive slip ring through a conductive slip ring seat, the heating tube of the first lower calendering roll 52 and the heating tube of the first upper calendering roll 53 can be electrically connected with an external power supply through the corresponding conductive slip rings, and after the heating tube of the first lower calendering roll 52 and the heating tube of the first upper calendering roll 53 are electrified, the lower steel strip 24 and the upper steel strip 34 can be heated.

The two first driving modules are used for driving the first upper calendering roller 53 to slide up and down. The two first driving modules correspond to the two bearing blocks 532, respectively.

The first driving module includes a first connecting block 54, a first lead screw nut 55, a first lead screw 56, and a first driving member 57. The first connection block 54 is disposed at the top end of the corresponding bearing housing 532. The top end of the first connecting block 54 is provided with an approximately rectangular mounting hole, and the bottom end of the first lead screw nut 55 is arranged in the mounting hole. The first lead screw 56 is in threaded fit with the first lead screw nut 55, the first lead screw 56 partially extends out of the top end of the first lead screw nut 55, the top end of the first lead screw 56 extends out of a through hole at the top in the corresponding first installation space and is connected with the first driving piece 57, a bearing is arranged in the through hole, and the bearing is sleeved on the periphery of the first lead screw 56 to rotatably support the first lead screw 56. The first drive member 57 is a hand wheel, it being understood that the first drive member 57 could also be a motor. In practical application, the hand wheel is rotated, so that the first lead screw 56 can be driven to rotate, the first lead screw 56 can be driven to rotate to drive the first lead screw nut 55 to move up and down, the first connecting block 55 can be driven to move up and down, the corresponding bearing seat 532 can be driven to slide up and down along the two corresponding slide rails 533, and the first upper calendering roller 53 can be driven to slide up and down. Through the up-and-down sliding of the first upper rolling roll 53, in practical application, the distance between the first upper rolling roll 53 and the first lower rolling roll 52 can be adjusted according to the actually required thickness of the electrode membrane, and further the width of the gap between the upper steel strip 34 and the lower steel strip 24 can be adjusted, so that when the electrode membrane is extruded through the first upper rolling roll 53 and the first lower rolling roll 52, the electrode membrane with the required thickness can be obtained.

First connecting block 54 includes connecting seat, load sensor and the clamp plate that sets gradually from down up, and connecting seat, load sensor and clamp plate all are the circle, and the connecting seat setting is equipped with foretell mounting hole on the top of the bearing frame 532 that corresponds, clamp plate. The load sensors are provided to measure the pressing forces of the first lower roll 52 and the first upper roll 53 against the electrode membrane.

As shown in fig. 1 and 3, the first pair of roller rolling assemblies further includes two first dial gauges 58, and the two first dial gauges 58 are respectively disposed at the top ends of the two first portions 143. The top ends of the first connecting blocks 54 of the two first driving modules are respectively provided with two first connecting pieces 542, the first connecting pieces 542 are Z-shaped, the two first connecting pieces 542 are located between the two first portions 143, and each first dial indicator 58 corresponds to one first connecting piece 542. The end of the measuring rod of the first dial indicator 58 abuts against the top end of the corresponding first connecting piece 542, and the distance of the up-and-down sliding of the first upper calendering roll 53 can be measured through the arranged first dial indicator 58, so that the measurement is accurate, and the distance between the first upper calendering roll 53 and the first lower calendering roll 52 can be conveniently adjusted by an operator.

The first dial indicator 58 may be replaced with, for example, a first percentile indicator or a first ten-thousandth indicator.

The second pair of roll calendering assemblies are identical in construction to the first pair of roll calendering assemblies. The second pair of roller rolling assemblies includes a second lower rolling roller 62, a second upper rolling roller 63 and two second driving modules. The second upper reduction roll 63 is located above the second lower reduction roll 62 and is disposed vertically opposite the second lower reduction roll 62. Both ends of the second lower rolling roll 62 and both ends of the second lower rolling roll 62 are fixedly disposed at the bottom in the second mounting spaces of the two first portions 143 through two bearing housings 622, respectively, so that the second lower rolling roll 62 is fixed relative to the frame 10. Second lower reduction rolls 62 are positioned inside lower steel strip 24 and abut lower steel strip 24. The two ends of the second upper rolling roll 63 are slidably disposed on the inner walls of the second mounting spaces of the two first portions 143 through two bearing housings 632, respectively, and the second upper rolling roll 63 can slide up and down in the second mounting spaces of the two first portions 143, so that the second upper rolling roll 63 can slide up and down with respect to the frame 10. Specifically, the left end and the right end of each bearing seat 632 are respectively in sliding fit with two sliding rails 633, the two sliding rails 633 are respectively arranged on the inner walls of the two sides of the corresponding second installation space, and each bearing seat 632 can slide up and down along the corresponding two sliding rails 633, so that the second upper calendaring roller 63 can be driven to slide up and down. Second upper reduction rolls 63 are positioned inside upper steel strip 34 and abut upper steel strip 34. In practical application, the second lower rolling roller 62 and the first upper rolling roller 63 are respectively abutted to the lower steel belt 24 and the upper steel belt 34, and the width of the gap is gradually reduced along the direction from the upper driven roller 33 to the upper driving roller 32, so that the second extrusion of the electrode diaphragm can be realized through the first lower rolling roller 62 and the first upper rolling roller 63, so as to realize the second compaction, thinning and correction of the thickness of the electrode diaphragm, and thus, the required electrode diaphragm can be obtained.

The second lower calendering roll 62 and the second upper calendering roll 63 are heating rolls, so that the lower steel strip 24 and the upper steel strip 34 can be heated through the second lower calendering roll 62 and the second upper calendering roll 63, the electrode membrane can be heated, the adhesive can be activated, and the electrode membrane can be extruded conveniently. And one end of the second lower calendering roll 62 and one end of the second upper calendering roll 63 are respectively provided with a conductive slip ring through a conductive slip ring seat, the heating tube of the second lower calendering roll 62 and the heating tube of the second upper calendering roll 63 can be electrically connected with an external power supply through corresponding conductive slip rings, and after the heating tube of the second lower calendering roll 62 and the heating tube of the second upper calendering roll 63 are electrified, the lower steel strip 24 and the upper steel strip 34 can be heated.

The two second driving modules are used for driving the second upper calender rolls 63 to slide up and down. The two second driving modules correspond to the two bearing blocks 632, respectively.

The second driving module comprises a second connecting block 64, a second lead screw nut 65, a second lead screw 66 and a second driving piece 67. The second connecting block 64 is disposed at the top end of the corresponding bearing housing 632. The top end of the second connecting block 64 is provided with a mounting hole in an approximately rectangular shape, and the bottom end of the second lead screw nut 65 is arranged in the mounting hole. The second screw 66 is in threaded fit with the second screw nut 65, the second screw 66 partially extends out of the top end of the second screw nut 65, the top end of the second screw 66 extends out of a through hole at the top in the corresponding second mounting space and is connected with the second driving piece 67, a bearing is arranged in the through hole, and the periphery of the second screw 66 is sleeved with the bearing to rotatably support the second screw 66. The second driving member 67 is a hand wheel, and it is understood that the second driving member 67 may be a motor. In practical application, the hand wheel is rotated to drive the second lead screw 66 to rotate, and the rotation of the second lead screw 66 can drive the second lead screw nut 65 to move up and down, so as to drive the second connecting block 64 to move up and down, further drive the corresponding bearing block 632 to slide up and down along the corresponding two slide rails 633, and further drive the second upper calendering roller 63 to slide up and down. Through the up-and-down sliding of the second upper calendering roll 63, in practical application, the distance between the second upper calendering roll 63 and the second lower calendering roll 62 can be adjusted according to the actually required thickness of the electrode membrane, and further the width of the gap between the upper steel strip 34 and the lower steel strip 24 can be adjusted, so that when the electrode membrane is extruded through the second upper calendering roll 63 and the second lower calendering roll 62, the electrode membrane with the required thickness can be obtained.

Second connecting block 64 includes connecting seat, load sensor and the clamp plate that up sets gradually down, and connecting seat, load sensor and clamp plate all are the circle form, and the connecting seat setting is on the top of the bearing frame 632 that corresponds, and the top of clamp plate is equipped with foretell mounting hole. The load sensors are provided to measure the pressing force of the second lower roll 62 and the second upper roll 63 against the electrode membrane.

As shown in fig. 1 and 3, the second pair of roller rolling assemblies further includes two second dial indicators 68, and the two second dial indicators 68 are respectively disposed at the top ends of the two first portions 143. The top ends of the second connecting blocks 64 of the two second driving modules are respectively provided with two second connecting members 642, the second connecting members 642 are Z-shaped, the two second connecting members 642 are located between the two first portions 143, and each second dial indicator 68 corresponds to one second connecting member 642. The end of the measuring rod of the second dial indicator 68 abuts against the top end of the corresponding second connecting piece 642, the vertical sliding distance of the second upper calendering roll 63 can be measured through the arranged second dial indicator 68, the measurement is accurate, and the operator can conveniently adjust the distance between the second upper calendering roll 63 and the second lower calendering roll 62.

The second dial indicator 68 may be replaced by, for example, a second dial indicator or a second ten-thousandth indicator.

It is understood that, in other embodiments, the number of the paired-roller rolling assemblies may be other multiple, such as three, four or more, etc., and the number of the paired-roller rolling assemblies may be set according to actual situations.

Through foretell structure, the utility model discloses a theory of operation does: the lower driving roller 22 is first driven by the lower driving module to rotate in the counterclockwise direction, thereby rotating the lower steel belt 24 and the lower driven roller 23 in the counterclockwise direction, while the upper driving roller 32 is driven by the upper driving module to rotate synchronously, thereby rotating the upper steel belt 34 and the upper driven roller 33 in the clockwise direction. The lower steel belt 24 and the upper steel belt 34 are heated by the lower heating module and the upper heating module, respectively. Then the electrode powder is added to the lower steel belt 24 through the feeding area 70, because the lower steel belt 24 is heated by the lower heating module, the electrode powder can be heated through the lower steel belt 24 to activate the adhesive in the electrode powder, meanwhile, the electrode powder can be driven to move towards the direction close to the lower driving roller 22 and the upper driving roller 32 through the lower steel belt 24, in the process that the electrode powder is driven to move towards the direction close to the lower driving roller 22 and the upper driving roller 32 by the lower steel belt 24, the lower steel belt 24 is heated through the heating mechanism 40, and therefore the electrode powder can be heated through the lower steel belt 24 so that the temperature of the electrode powder can be kept constant. When the electrode powder enters the gap between the upper steel belt 34 and the lower steel belt 24, the upper steel belt 34 is heated by the upper heating module, so that the electrode powder can be heated by the upper steel belt 34 to activate the adhesive in the electrode powder, and the electrode powder is pressed by the upper steel belt 34 and the lower steel belt 24, so that the electrode powder forms an electrode membrane, and the formed electrode membrane can move towards the direction close to the lower driving roller 22 and the upper driving roller 32 under the driving of the upper steel belt 34 and the lower steel belt 24. In the moving process of the electrode diaphragm, the electrode diaphragm is firstly extruded for the first time through a first lower calendering roller 52 and a first upper calendering roller 53 of a first pair of roller calendering assemblies, and because the width of the gap is gradually reduced along the direction from the upper driven roller 33 to the upper driving roller 32, the electrode diaphragm can be compacted, thinned and corrected for the first time through the first lower calendering roller 52 and the first upper calendering roller 53, and then the electrode diaphragm is extruded for the second time through a second lower calendering roller 62 and a second upper calendering roller 63 of a second pair of roller calendering assemblies, so that the electrode diaphragm can be compacted, thinned and corrected for the second time, and the required electrode diaphragm can be obtained. In the process of pressing the electrode membrane by the first lower rolling roll 52 and the first upper rolling roll 53 and in the process of pressing the electrode membrane by the second lower rolling roll 62 and the second upper rolling roll 63, heating of the electrode membrane by the first lower rolling roll 52 and the first upper rolling roll 53, the second lower rolling roll 62 and the second upper rolling roll 63 can also be realized so as to press the electrode membrane.

The utility model discloses a lower steel band mechanism 20, the last steel band mechanism 30, the heating mechanism 40 and the calendering mechanism that set up, the electrode powder film forming can realize serialization production, disposable film forming, and difficult fracture, need not to relapse the roll-in, can realize mass production, has improved production efficiency, reduction in production cost.

The utility model discloses based on foretell two steel band film forming equipment of dry process, still provide a two steel band film forming method of dry process, including following step:

and step S2, driving the lower driving roller 22 to rotate along the anticlockwise direction through the lower driving motor 25 and the lower speed reducer 26 of the lower driving module, so that the lower steel belt 24 and the lower driven roller 23 rotate along the anticlockwise direction, and synchronously driving the upper driving roller 33 to rotate along the opposite direction, namely the clockwise direction through the upper driving motor 35 and the upper speed reducer 36 of the upper driving module, so that the upper steel belt 34 and the upper driven roller 33 rotate along the opposite direction, namely the clockwise direction.

And S4, heating the lower steel belt 24 through the lower heating pipe 272 of the lower heating module, and heating the upper steel belt 34 through the upper heating pipe 372 of the upper heating module.

And S6, adding the electrode powder onto the lower steel belt 24 through the feeding area 70, wherein the lower steel belt 24 is heated by the lower heating module, so that the electrode powder can be heated through the lower steel belt 24 to activate the adhesive in the electrode powder, and meanwhile, the electrode powder can be driven to move towards the direction close to the lower driving roller 22 and the upper driving roller 32 through the lower steel belt 24. The lower steel strip 24 heats the electrode powder at a temperature of 160-200 c, preferably 180 c.

During the process that the lower steel belt 24 drives the electrode powder to move towards the direction close to the lower driving roller 22 and the upper driving roller 32, the lower steel belt 24 is heated by the heater 43 of the heating mechanism 40, so that the electrode powder can be heated by the lower steel belt 24 to keep the temperature of the electrode powder constant. The heater 43 of the heating means 40 heats the lower steel strip 24 at a temperature of 160 to 200 c, preferably 180 c.

And S8, when the electrode powder enters the gap between the upper steel belt 34 and the lower steel belt 24, the upper steel belt 34 is heated by the upper heating module, so that the electrode powder can be heated by the upper steel belt 34 to activate the adhesive in the electrode powder, and meanwhile, the electrode powder is pressed by the upper steel belt 34 and the lower steel belt 24, so that the electrode powder forms an electrode membrane, and the formed electrode membrane can move towards the direction close to the lower driving roller 22 and the upper driving roller 32 under the driving of the upper steel belt 34 and the lower steel belt 24. The upper steel belt 34 heats the electrode powder at a temperature of 160-200 c, preferably 180 c.

Step S10, in the process of moving the electrode diaphragm, the first lower calendering roll 52 and the first upper calendering roll 53 of the first counter roll calendering assembly of the calendering mechanism can extrude the electrode diaphragm for the first time, and since the width of the gap is gradually reduced along the direction from the upper driven roll 33 to the upper driving roll 32, the first lower calendering roll 52 and the first upper calendering roll 53 can realize the first compaction, thinning and correction of the electrode diaphragm, and then the second lower calendering roll 62 and the second upper calendering roll 63 of the second counter roll calendering assembly of the calendering mechanism can realize the second compaction, thinning and correction of the electrode diaphragm, so as to obtain the required electrode diaphragm.

While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.

Claims (12)

1. The dry-method double-steel-strip film forming equipment comprises a rack, and is characterized by further comprising a lower steel strip mechanism, an upper steel strip mechanism, a heating mechanism and a calendaring mechanism, wherein the upper steel strip mechanism, the heating mechanism and the calendaring mechanism are positioned above the lower steel strip mechanism;

the lower steel belt mechanism comprises a lower driving roller, a lower driven roller and a lower steel belt sleeved on the lower driving roller and the lower driven roller, the lower driving roller and the lower driven roller are respectively arranged on the rack, a feeding area is arranged above the lower driven roller and the lower steel belt, and a lower heating module is arranged on one side of the lower driven roller, which is far away from the lower driving roller;

the upper steel belt mechanism comprises an upper driving roller, an upper driven roller and an upper steel belt sleeved on the upper driving roller and the upper driven roller, the upper driving roller and the upper driven roller are respectively arranged on the rack, the upper driving roller corresponds to the lower driving roller, the upper driven roller is positioned between the upper driving roller and the feeding area, a gap is formed between the upper steel belt and the lower steel belt, the width of the gap is gradually reduced along the direction from the upper driven roller to the upper driving roller, and an upper heating module is arranged on one side of the upper driven roller, which is far away from the upper driving roller;

the heating mechanism is arranged on the inner side of the lower steel belt and is positioned below the upper driven roller;

the rolling mechanism is arranged among the lower driving roller, the upper driving roller and the upper driven roller.

2. The dry-process double-steel-belt film forming equipment according to claim 1, wherein the lower steel belt mechanism further comprises a lower driving module for driving the lower driving roller to rotate, the lower driving module comprises a lower driving motor and a lower speed reducer connected with the lower driving motor, and the lower speed reducer is connected with one end of the lower driving roller.

3. The dry-process double-steel-belt film forming equipment according to claim 1, wherein the upper steel belt mechanism further comprises an upper driving module for driving the upper driving roller to rotate, the upper driving module comprises an upper driving motor and an upper speed reducer connected with the upper driving motor, and the upper speed reducer is connected with the upper driving motor.

4. The dry method double steel strip film forming apparatus according to claim 1, wherein the lower heating module comprises a lower heating cover and a lower heating pipe, the lower heating cover surrounds the outer periphery of the lower driven roller, one side of the lower heating cover close to the lower driven roller is opened and is not in contact with the lower steel strip, the opening corresponds to the lower steel strip, a lower mounting portion is arranged in the lower heating cover, and the lower heating pipe is arranged in the lower mounting portion.

5. The dry method double steel strip film-forming equipment according to claim 1, wherein the upper heating module comprises an upper heating cover and an upper heating pipe, the upper heating cover surrounds the periphery of the upper driven roller, one side of the upper heating cover close to the upper driven roller is provided with an opening corresponding to the upper steel strip and is not in contact with the upper steel strip, and an upper mounting part is arranged in the upper heating cover and is provided with the upper heating pipe.

6. The dry-method double-steel-strip film forming equipment as claimed in claim 1, wherein the heating mechanism comprises a support arranged on the rack and a heater arranged at the top end of the support, and the heater corresponds to the lower steel strip and has a gap with the lower steel strip.

7. The dry method double steel strip film forming equipment according to claim 6, wherein the heater is a ceramic heater.

8. The dry-process double steel strip film-forming equipment according to claim 1, wherein the rolling mechanism comprises at least two pair-roller rolling assemblies, the two pair-roller rolling assemblies are respectively a first pair-roller rolling assembly and a second pair-roller rolling assembly, and the first pair-roller rolling assembly is arranged between the upper driven roller and the second pair-roller rolling assembly.

9. The dry-process double-steel-strip film forming equipment according to claim 8, wherein the first counter roll rolling assembly comprises a first lower rolling roll, a first upper rolling roll and two first drive modules, the first upper rolling roll and the first lower rolling roll are arranged oppositely from top to bottom, the first lower rolling roll is arranged on the rack and positioned on the inner side of the lower steel strip and abutted against the lower steel strip, the first lower rolling roll and the rack are relatively fixed, the first upper rolling roll is arranged on the rack and positioned on the inner side of the upper steel strip and abutted against the upper steel strip, the first upper rolling roll can slide up and down relative to the rack, and the two first drive modules are used for driving the first upper rolling roll to slide up and down.

10. The dry-process double-steel-strip film forming equipment according to claim 9, wherein the first lower calendering roll and the first upper calendering roll are both heating rolls.

11. The dry-method double steel strip film forming equipment according to claim 8, wherein the second counter roll rolling assembly comprises a second lower rolling roll, a second upper rolling roll and two second driving modules, the second upper rolling roll and the second lower rolling roll are arranged oppositely from top to bottom, the second lower rolling roll is arranged on the rack and located on the inner side of the lower steel strip and abutted to the lower steel strip, the second lower rolling roll is fixed relative to the rack, the second upper rolling roll is arranged on the rack and located on the inner side of the upper steel strip and abutted to the upper steel strip, the second upper rolling roll can slide up and down relative to the rack, and the two second driving modules are used for driving the second upper rolling roll to slide up and down.

12. The dry-process double-steel-strip film forming equipment according to claim 11, wherein the second lower calendering roll and the second upper calendering roll are both heating rolls.

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