Automatic forming equipment for lithium battery module cover plate

Abstract

The invention discloses lithium battery module cover plate automatic forming equipment, which comprises a coiling barrel and a forming mechanism, the forming mechanism comprises an upper mold and a lower mold, a sheet molding compound is coiled in the coiling barrel and is supplied between the upper mold and the lower mold by the coiling barrel, and the upper mold and / or the lower mold move to perform forming operation. The upper die comprises an upper cavity and an upper cutter groove formed in the periphery of the upper cavity, an upper blade is arranged in the upper cutter groove in a sliding mode, the lower die comprises a lower cavity and a lower cutter groove formed in the periphery of the lower cavity, and a lower blade is arranged in the lower cutter groove in a sliding mode; the upper blade and the lower blade are arranged and constructed to slidably reciprocate between a first position and a second position, the blade closing operation is carried out on the periphery of the formed cover plate, and a cut is formed on the sheet molding compound and located on the periphery of the cover plate, so that the cover plate is conveniently separated from the sheet molding compound subsequently, cutting equipment and a cutting control device do not need to be additionally arranged, and the cutting efficiency is improved. The working efficiency is improved, in-situ cutting is carried out, the cutting precision is improved, and the waste material rate is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic cover plate forming, and in particular to automatic forming equipment for lithium battery module cover plates. Background Art

[0002] The forming process of lithium battery module cover includes stamping, injection molding and blister molding. Taking the blister molding process as an example, the blister molding process softens the plastic sheet by heating, and then uses vacuum adsorption or other methods to make it fit the mold surface, and then cools it to form. This process has the advantages of low cost and high production efficiency. The blister molding device in the existing technology transports the sheet molding material into the mold of the blister molding machine, closes the upper and lower molds, and then performs the above-mentioned blister molding process. After cooling, the mold is opened and demolded to form a cover structure on the sheet molding material. The formed cover needs to go through at least two processes. The first is to cut off the sheet molding material part with the formed cover through a cutting device, and the second is to transport it to the die-cutting equipment of the next process for further die-cutting of the excess sheet molding material. There are many processes, and a large amount of waste is generated during the two cutting processes. The waste needs to be recycled and processed manually later, and the work efficiency is low. Therefore, there is an urgent need for an automatic forming device for lithium battery module cover to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to provide an automatic forming device for a lithium battery module cover plate, which can effectively solve the problems existing in the above-mentioned prior art.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions: an automatic forming device for a lithium battery module cover plate, comprising a reel and a forming mechanism, wherein the forming mechanism comprises an upper die and a lower die, a sheet molding compound is wound on the reel and supplied by the reel to between the upper die and the lower die, and the upper die and / or the lower die are moved to perform a forming operation, the upper die comprising an upper cavity and an upper knife groove arranged on the periphery of the upper cavity, an upper blade sliding in the upper knife groove, and the lower die comprising a lower cavity and a lower knife groove arranged on the periphery of the lower cavity, a lower blade sliding in the lower knife groove;

[0005] wherein the upper blade and the lower blade are arranged and configured to slidably reciprocate between a first position and a second position, wherein in the first position, the upper blade and the lower blade are retracted into the corresponding upper blade groove and the lower blade groove, and in the second position, the upper blade and the lower blade are partially in contact with each other; and

[0006] When the upper mold and the lower mold are in contact, the upper blade and the lower blade are located at the first position. During the separation process of the upper mold and the lower mold, the upper blade and the lower blade are located at the second position at least once.

[0007] Preferably, the molding mechanism further includes a knife-out mechanism, and the knife-out mechanism is configured to drive the upper blade and the lower blade to switch from the first position to the second position at least once during the separation process of the upper mold and the lower mold.

[0008] Preferably, the knife-discharging mechanism includes:

[0009] Two reciprocating mechanisms are respectively arranged on the upper die at one side of the upper blade and the lower die at one side of the lower blade. When the reciprocating mechanisms are started, the upper blade and the lower blade are synchronously driven to switch between the first position and the second position;

[0010] A matching block is mounted on a side of the upper die facing the lower die, and a first linkage gear and a first linkage rack are provided on the matching block. The first linkage gear is linked to the reciprocating mechanism in the upper die, and when the first linkage gear rotates, the linked reciprocating mechanism is driven to start;

[0011] A matching groove is provided on a side of the lower die facing the upper die, wherein a second linkage gear and a second linkage rack are provided in the matching groove, wherein the second linkage gear is linked to a reciprocating mechanism in the upper die, and when the second linkage gear rotates, the linked reciprocating mechanism is driven to start; and

[0012] When the matching block is inserted into the matching groove, the first linkage rack is meshed with the second linkage gear, and the second linkage rack is meshed with the first linkage gear.

[0013] Preferably, the first linkage gear and the second linkage gear both include an outer gear and an inner wheel, the inner wheel is linked to the reciprocating mechanism, and the outer gear and the inner wheel are configured so that when the mating block moves out of the mating groove, the outer gear drives the inner wheel to rotate in one direction.

[0014] Preferably, the upper blade and the lower blade are provided with a plurality of groups of teeth on opposite sides, and each group of teeth includes:

[0015] a first cutting tooth, wherein when the upper blade and the lower blade are in contact with each other, the first cutting tooth on the upper blade contacts the first cutting tooth on the lower blade;

[0016] second cutting teeth, wherein when the upper blade and the lower blade are in contact with each other, the second cutting teeth on the upper blade and the second cutting teeth on the lower blade are spaced apart by a preset distance; and

[0017] The first cutting teeth and the second cutting teeth are alternately distributed on the corresponding upper blade and lower blade.

[0018] Preferably, a convex strip is provided between the upper mold cavity and the upper knife groove, a guide groove is provided between the lower mold cavity and the lower knife groove, a guide plate is movably installed in the guide groove, and the guide plate is configured to swing downward toward the side of the lower mold cavity into the guide groove when under pressure.

[0019] Preferably, a reset mechanism is installed on the guide plate, and the reset mechanism is configured to drive the guide plate to reset and swing when the guide plate is not subjected to force.

[0020] Preferably, the reset mechanism includes:

[0021] a return spring mounted on the guide plate, and the return spring tends to drive the guide plate to move toward the return state;

[0022] The piston assembly includes a piston rod connected to the guide plate, a piston cylinder matched with the piston rod, a first branch pipe and a second branch pipe provided at one end of the piston cylinder away from the piston rod, a one-way air valve installed at the end of the first branch pipe, and the one-way air valve controls the one-way discharge of gas in the first branch pipe;

[0023] An air hole is provided in the matching groove, and the second branch pipe port is connected to the air hole. The air hole is arranged to be covered and closed by the matching block when the matching block enters the matching groove, and to open when the matching block leaves the matching groove.

[0024] Preferably, it also includes:

[0025] The receiving drum is located on the side of the molding mechanism away from the winding drum and is used to receive and reel in the sheet molding compound output from the molding mechanism;

[0026] A discharge mechanism is located between the receiving cylinder and the forming mechanism and is used to transfer the formed cover plate on the sheet molding compound roll output from the forming mechanism;

[0027] A plurality of rollers are distributed on the sheet molding compound transmission path.

[0028] Preferably, a material picking mechanism is installed between the coil drum and the molding mechanism, and the material picking mechanism includes a pair of material picking plates, the two material picking plates are respectively distributed on both sides of the sheet molding compound, and one end of the material picking plate is connected to the

[0029] The sheet molding compound is in contact with the sheet molding compound, and the other end is movably arranged, and a rotation sensor is installed on the movable arrangement. The rotation sensor is used to output a signal to control the molding mechanism to perform a material feeding action when the picking plate rotates.

[0030] Beneficial effects: The present invention is provided with an upper blade and a lower blade, which are controlled to slide back and forth between a first position and a second position, and a knife closing operation is performed around the formed cover plate, so that a cut is formed around the cover plate on the sheet molding material, so as to facilitate the subsequent separation of the cover plate from the sheet molding material. Compared with the conventional subsequent cutting method, on the one hand, there is no need to set up additional cutting equipment and configure a cutting control device, which saves costs, reduces subsequent processes, and improves work efficiency. On the other hand, it can perform in-situ cutting and avoid subsequent transmission dislocation and the like, thereby improving cutting accuracy and reducing scrap rate.

[0031] In addition, the present invention is provided with a convex strip and a guide plate cooperating therewith. The convex strip is squeezed and swung by the convex strip, thereby guiding the sheet molding material between the upper mold and the lower mold to tilt toward the mold cavity and clamping the sheet molding material in a stable state. When the upper mold and the lower mold are separated, the guide plate is reset by the action of the reset mechanism, and the molded cover plate is separated from the lower mold, thereby achieving an auxiliary demolding effect. Among them, the molding position is pulled simultaneously from all sides, which improves the demolding efficiency and is more reliable and effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0033] In the attached figure:

[0034] Figure 1 It is a structural schematic diagram of the automatic forming equipment for lithium battery module cover plates of the present invention;

[0035] Figure 2 This is a front view of the automatic forming equipment for lithium battery module cover plates of the present invention;

[0036] Figure 3 It is a structural schematic diagram of the upper mold and the lower mold of the present invention;

[0037] Figure 4 It is a structural schematic diagram of the upper mold of the present invention;

[0038] Figure 5 It is a top view of the upper mold of the present invention;

[0039] Figure 6 It is a structural schematic diagram of the lower mold of the present invention;

[0040] Figure 7 It is a structural schematic diagram of the linkage gear of the present invention;

[0041] Figure 8 It is a structural schematic diagram of the reciprocating mechanism of the present invention;

[0042] Figure 9 It is a structural schematic diagram of the reset mechanism of the present invention;

[0043] Figure 10 It is a structural schematic diagram of the roller and the material checking mechanism of the present invention;

[0044] Figure 11 It is a schematic diagram of the internal structure of the material inspection mechanism of the present invention;

[0045] Figure 12 It is a structural diagram of the material inspection mechanism and pipeline of the present invention;

[0046] Reference numerals in the figure: 1, winding drum; 2, upper die; 21, upper cavity; 22, upper knife groove; 23, upper blade; 3, lower die; 31, lower cavity; 32, lower knife groove; 33, lower blade; 34, first knife tooth; 35, second knife tooth; 41, reciprocating mechanism; 411, rotating wheel; 412, elongated cavity; 413, shifting rod; 414, pulley; 415, guide rail pair; 42, matching block; 421, first linkage gear; 422, first linkage rack; 43, matching groove; 44, outer gear; 45, inner gear; 46, elastic pawl; 5. Raised strip; 6. Guide groove; 61. Guide plate; 71. Return spring; 72. Piston assembly; 721. Piston rod; 722. Piston cylinder; 723. First branch pipe; 724. Second branch pipe; 725. One-way air valve; 726. Air hole; 8. Material collecting cylinder; 91. Longitudinal lifting guide rail; 92. Unloading rack; 93. Vacuum air nozzle; 10. Roller; 111. Cross bar; 112. Aisle; 113. Material picking plate; 114. Rotation sensor; 115. Air cylinder; 116. Pipeline; 117. Ash collecting trough; 12. Sheet molding compound. DETAILED DESCRIPTION

[0047] The following describes the embodiments of the present invention in conjunction with the accompanying drawings. The terms used in the embodiments of the present invention are only used to explain the specific embodiments of the present invention and are not intended to limit the present invention. The following describes the embodiments of the present application in conjunction with the accompanying drawings.

[0048] Example 1: Figures 1-6 As shown, an automatic forming device for a lithium battery module cover plate includes a reel 1 and a forming mechanism, the forming mechanism includes an upper mold 2 and a lower mold 3, a sheet molding compound 12 is wound on the reel 1 and supplied by the reel 1 to between the upper mold 2 and the lower mold 3, and the upper mold 2 and / or the lower mold 3 are moved to perform a forming operation; the upper mold 2 includes an upper mold cavity 21 and an upper knife groove 22 arranged on the periphery of the upper mold cavity 21, an upper blade 23 slides in the upper knife groove 22, the lower mold 3 includes a lower mold cavity 31 and a lower knife groove 32 arranged on the periphery of the lower mold cavity 31, the lower knife groove 32 A lower blade 33 slides inside; the upper blade 23 and the lower blade 33 are arranged and constructed to slidably move back and forth between a first position and a second position. In the first position, the upper blade 23 and the lower blade 33 are both retracted into the corresponding upper knife groove 22 and the lower knife groove 32. In the second position, the upper blade 23 and the lower blade 33 are partially fitted together; and when the upper mold 2 and the lower mold 3 are fitted together, the upper blade 23 and the lower blade 33 are located in the first position. During the separation process of the upper mold 2 and the lower mold 3, the upper blade 23 and the lower blade 33 are in the second position at least once.

[0049] refer to Figure 4-Figure 6As shown, an upper knife groove 22 and an upper blade 23, as well as a lower knife groove 32 and a lower blade 33 are arranged around the periphery of the upper cavity 21 and the lower cavity 31. Taking the movement of the upper mold 2 as an example, when the upper mold 2 moves downward and fits into the lower mold 3, during the molding process, the upper blade 23 and the lower blade 33 are respectively retracted into the corresponding upper knife groove 22 and the lower knife groove 32, and are in the first position, which does not affect the entire molding process. When the upper mold 2 and the lower mold 3 are separated, that is, after molding and demoulding, the upper blade 23 and the lower blade 33 are in the second position to perform a knife closing operation, thereby cutting the sheet molding compound 12 around the cover plate to form a circle of easy-tear lines. In the subsequent process, the molded cover plate can be easily removed from the sheet molding compound 12 along the easy-tear lines without the need for further cutting.

[0050] The forming mechanism further includes a knife-out mechanism, which is configured to drive the upper blade 23 and the lower blade 33 to switch from the first position to the second position at least once during the separation process of the upper mold 2 and the lower mold 3.

[0051] In this embodiment, the knife-discharging mechanism includes two reciprocating mechanisms 41, a matching block 42, and a matching groove 43. The two reciprocating mechanisms 41 are respectively arranged on the upper die 2 on one side of the upper blade 23 and on the lower die 3 on one side of the lower blade 33. When the reciprocating mechanisms 41 are started, they synchronously drive the upper blade 23 and the lower blade 33 to switch between the first position and the second position.

[0052] refer to Figure 4 and Figure 5 As shown, the mating block 42 is mounted on the side of the upper mold 2 facing the lower mold 3 and is located on both sides of the transmission direction of the sheet molding compound 12 so as not to affect the transmission of the sheet molding compound 12. The mating block 42 is provided with a first linkage gear 421 and a first linkage rack 422. The first linkage gear 421 is linked to the reciprocating mechanism 41 in the upper mold 2. When the first linkage gear 421 rotates, the linked reciprocating mechanism 41 is driven to start.

[0053] refer to Figure 6 As shown, the matching groove 43 is opened on the side of the lower mold 3 facing the upper mold 2, and the second linkage gear and the second linkage rack (not shown in the figure) are arranged in the matching groove 43. The second linkage gear and the second linkage rack correspond to the first linkage rack 422 and the first linkage gear 421 respectively. The second linkage gear is linked to the reciprocating mechanism 41 in the upper mold 2. When the second linkage gear rotates, the linked reciprocating mechanism 41 is driven to start;

[0054] refer to Figure 4-Figure 6As shown, in this embodiment, the mating block 42 is an H-shaped mating block 42, and the mating groove 43 is an H-shaped mating groove 43. When the upper mold 2 moves downward, the H-shaped mating block 42 is inserted into the corresponding H-shaped mating groove 43. In this embodiment, a first linkage gear 421 is set in a groove of the H-shaped mating block 42, and a first linkage rack 422 is set in another corresponding groove. Similarly, a second linkage gear and a second linkage rack are set at the corresponding protruding positions of the H-shaped mating groove 43. As the mating block 42 is inserted into the mating groove 43, the first linkage rack 422 engages with the second linkage gear, and the second linkage rack engages with the first linkage gear 421.

[0055] The first linkage gear 421 and the second linkage gear have the same structure. Figure 7 As shown, taking the first linkage gear 421 as an example, it includes an outer gear 44 and an inner wheel 45. The inner wheel 45 is linked with the reciprocating mechanism 41. When the matching block 42 moves out of the matching groove 43, the outer gear 44 drives the inner wheel 45 to rotate in one direction, for example Figure 7 As shown, a plurality of elastic pawls 46 are provided along the circumference of the inner wheel 45 , and a gear structure is provided inside the outer gear 44 . The elastic pawls 46 control the one-way engagement of the inner wheel 45 with the gear structure inside the outer gear 44 .

[0056] Through the above arrangement, when the upper mold 2 moves downward, in this direction, the outer gear 44 of the first linkage gear 421 meshes with the corresponding second linkage rack, and the second linkage rack controls the outer gear 44 of the first linkage gear 421 to rotate independently. When the upper mold 2 moves upward and away from the lower mold 3, in this direction, the elastic pawl 46 is unidirectionally engaged with the gear structure inside the outer gear 44, so that the outer gear 44 can drive the inner wheel 45 to rotate, and the rotation is transmitted to the reciprocating mechanism 41 through the inner wheel 45, controlling the reciprocating mechanism 41 to drive the upper blade 23 and the lower blade 33 to switch between the first position and the second position;

[0057] The reciprocating mechanism 41 can be set as required to achieve the upper blade 23 and the lower blade 33 can be switched between the first position and the second position, refer to Figure 8As shown, in this embodiment, the reciprocating mechanism 41 adopts a rotating wheel 411 structure, including the rotating wheel 411. Taking the upper blade 23 as an example, an elongated cavity 412 perpendicular to its moving direction is provided on the upper blade 23. A shifting rod 413 is provided at the eccentric position of the rotating wheel 411. The shifting rod 413 is inserted into the elongated cavity 412. The rotating wheel 411 is connected to a driving wheel through a connecting rod. The driving wheel is linked to the inner wheel 45. The linkage mode can be set according to demand, including gear rack linkage, sprocket chain group linkage, and pulley 414 group linkage. In this embodiment, taking the linkage of the pulley 414 group as an example, the driving wheel is a pulley 414, and a pulley 414 is coaxially installed on one side of the inner wheel 45. The two pulleys 414 are directly linked through the linkage belt. When the inner wheel 45 rotates, the driving wheel is driven to rotate through the above-mentioned pulley 414 group, and the rotating wheel 411 is driven to rotate through the connecting shaft. As the rotating wheel 411 rotates, the shifting rod 413 is driven to rotate synchronously. Since the position of the rotating wheel 411 is fixed, it will squeeze the elongated cavity 412, so that the upper blade 23 moves downward or upward;

[0058] refer to Figure 8 As shown, in order to stabilize the movement of the upper blade 23, a guide rail pair 415 is directly provided between the upper blade 23 and the upper film to guide the stable linear movement of the upper blade 23. Similarly, the setting method of the lower blade 33 is the same as that of the upper blade 23.

[0059] refer to Figure 4-Figure 5 As shown, a plurality of matching blocks 42 and a plurality of reciprocating mechanisms 41 can be provided on a single upper blade 23 according to requirements;

[0060] In this embodiment, a switching action is taken as an example, that is, when the upper mold 2 moves upward and separates from the lower mold 3, the second linkage rack drives the outer gear 44 of the first linkage gear 421 to rotate, synchronously driving the inner wheel 45 to rotate, and the content drives the rotating wheel 411 to rotate. The rotating wheel 411 drives the upper blade 23 and the lower blade 33 to move through the shifting rod 413, switching from the first position to the second position. The movement speed of the upper blade 23 and the lower blade 33 is greater than the movement speed of the upper film, so that when the upper film moves and separates, the movement of the upper blade 23 and the lower blade 33 can make up for the gap between the upper mold 2 and the lower mold 3 and contact and close the knife operation. After the upper blade 23 and the lower blade 33 are closed, a cutting action is performed on the sheet molding compound 12 around the cover plate. Then, as the upper film continues to move, the rotating wheel 411 drives the shifting rod 413 to move from bottom to top, and drives the upper blade 23 and the lower blade 33 to move, switching from the second position to the first position. At this time, it can be arranged so that the second linkage rack is disengaged from the outer gear 44 of the first linkage gear 421.

[0061] For the partial fit of the upper blade 23 and the lower blade 33, refer to Figure 4As shown, in this embodiment, multiple groups of cutting teeth are provided on the opposite sides of the upper blade 23 and the lower blade 33, and each group of cutting teeth includes a first cutting tooth 34 and a second cutting tooth 35; for the first cutting tooth 34, when the upper blade 23 and the lower blade 33 are in contact, the first cutting tooth 34 on the upper blade 23 contacts the first cutting tooth 34 on the lower blade 33; thereby completely cutting the sheet molding compound 12 here; for the second cutting tooth 35, when the upper blade 23 and the lower blade 33 are in contact, the second cutting tooth 35 on the upper blade 23 and the second cutting tooth 35 on the lower blade 33 are spaced apart by a preset distance, thereby forming a cutting indentation of a certain depth on the sheet molding compound 12 here, so as to ensure that the molded cover plate can stay on the sheet molding compound 12 to a certain extent and continue to be transferred; by alternatingly distributing the first cutting teeth 34 and the second cutting teeth 35 on the corresponding upper blade 23 and the lower blade 33, a circle of easy-tear lines is formed on the sheet molding compound 12 around the molded cover plate.

[0062] Example 2, based on Example 1, in this example, reference Figure 4-Figure 6 As shown, a ridge 5 is provided between the upper cavity 21 and the upper knife groove 22, and a guide groove 6 is provided between the lower cavity 31 and the lower knife groove 32. A guide plate 61 is movably installed in the guide groove 6. The guide plate 61 is configured to swing downward toward the side of the lower cavity 31 into the guide groove 6 when under pressure;

[0063] As the upper film moves downward, the ridges 5 come into contact with the corresponding guide plates 61 and push the guide plates 61 to swing downward and retreat into the guide grooves 6. The sheet molding compound 12 between the ridges 5 and the guide plates 61 is also squeezed and bent downward, guiding the sheet molding compound 12 into the corresponding cavity. At the same time, the position of the sheet molding compound 12 is clamped and fixed to facilitate subsequent molding operations and prevent sliding during the molding process from affecting the molding effect.

[0064] In this embodiment, a reset mechanism is installed on the guide plate 61, and the reset mechanism is configured to drive the guide plate 61 to reset and swing when the guide plate 61 is not subjected to force;

[0065] refer to Figure 9 As shown, the reset mechanism includes a reset spring 71 and a piston assembly 72. The reset spring 71 is installed on the guide plate 61 (for example, a torsion spring installed at the movable connection of the guide plate 61), and the reset spring 71 tends to drive the movement toward the reset state; the piston assembly 72 includes a piston rod 721 connected to the guide plate 61, a piston cylinder 722 matched with the piston rod 721, and a first branch pipe 723 and a second branch pipe 724 are provided at the end of the piston cylinder 722 away from the piston rod 721. A one-way air valve 725 is installed at the end of the first branch pipe 723, and the one-way air valve 725 controls the one-way discharge of gas in the first branch pipe 723.

[0066] refer to Figure 5As shown, an air hole 726 is provided in the matching groove 43, and the end of the second branch pipe 724 is connected to the air hole 726. The air hole 726 is arranged to be covered and closed by the matching block 42 when the matching block 42 enters the matching groove 43, and to open when the matching block 42 leaves the matching groove 43.

[0067] That is: as the ridge 5 and the guide plate 61 come into contact, the guide plate 61 is squeezed and swung. At this time, the return spring 71 is in a state of accumulation. Then, the piston rod 721 swings with the guide plate 61 and moves synchronously in the piston cylinder 722, squeezing the air in the piston cylinder 722 and discharging it through the first branch pipe 723, so that the piston rod 721 can continue to move in the piston cylinder 722. The matching block 42 enters the matching groove 43 to cover the air hole 726 and seal it. When the molding is completed, the upper mold 2 moves upward. By setting the position of the air hole 726, it can be ensured that the ridge 5 is not completely out of the guide groove 6 area when the ridge 5 is not completely out of the guide groove 6 area. The air hole 726 is in a covered state, and the piston cylinder 722 is in a port blocked state. The piston rod 721 cannot move. When the ridge 5 is completely out of the guide groove 6 area, the position of the air hole 726 is separated from the matching block 42, and the air hole 726 is opened. The gas can enter the second branch pipe 724 from the air hole 726 and enter the piston cylinder 722 along the second branch pipe 724. Under the action of the reset spring 71, the guide plate 61 can be driven to reset and swing, thereby pulling and lifting the sheet molding compound 12 in the lower cavity 31 from all sides, assisting the demoulding operation and improving the demoulding efficiency.

[0068] Example 3, based on Example 1, with reference to Figure 1 and Figure 10 As shown, a receiving drum 8 is further provided on one side of the output end of the molding mechanism, and a discharge mechanism is provided between the receiving drum 8 and the molding mechanism. A plurality of rollers 10 are provided on the transmission path of the sheet molding compound 12 as required. The sheet molding compound 12 is wound on the take-up drum, so that the take-up drum is output to the molding mechanism along the rollers 10. After the above-mentioned molding operation, the sheet molding compound 12 with the formed cover plate is transported to the discharge mechanism, and the formed cover plate on the roll of the sheet molding compound 12 output from the molding mechanism is transferred by the discharge mechanism. Figure 1As shown, a longitudinal lifting guide rail 91 can be provided, and a discharge rack 92 with multiple vacuum air nozzles 93 can be provided on the longitudinal lifting guide rail 91. The discharge rack 92 is moved up and down on the longitudinal lifting guide rail 91 by electric control. When the sheet molding material 12 with the molded cover plate is transported to the bottom of the discharge rack 92, the discharge rack 92 is controlled to move downward on the longitudinal lifting guide rail 91, and the molded cover plate is adsorbed by the vacuum air nozzle 93, and the cover plate is pushed down so that it is separated from the sheet molding material 12 along the easy-to-tear line, and the molded cover plate is simultaneously driven to move downward steadily during the descent. A conveyor belt or a ramp or other structure can be provided below. When the cover plate adsorbed by the vacuum air nozzle 93 reaches the specified position, the molded cover plate is released and then reset; the remaining sheet molding material 12 can be transported to the receiving drum 8 along the roller 10, and the remaining sheet molding material 12 is rolled up and recovered by the receiving drum 8.

[0069] Example 4, based on Example 3, in this example, reference Figure 10-12 As shown, a material picking mechanism is installed between the reel 1 and the molding mechanism. The material picking mechanism includes a pair of material picking plates 113. The two material picking plates 113 are respectively distributed on both sides of the sheet molding compound 12. One end of the material picking plate 113 contacts the sheet molding compound 12, and the other end is movably arranged. A torsion spring is arranged at the movable arrangement to control the automatic reset of the material picking plate 113. A rotation sensor 114 is installed at the movable arrangement. The rotation sensor 114 is used to capture the rotation amount when the material picking plate 113 rotates, and output a signal to control the molding mechanism to perform the material feeding action.

[0070] refer to Figure 10 and Figure 11 As shown, a cross bar 111 is provided on one side of the output end of the reel 1, and a passage 112 is provided in the cross bar 111. The passage 112 is used to allow the sheet molding material 12 to pass through. A pair of picking plates 113 are provided in the passage 112. The two picking plates 113 are inclined toward the sheet molding material 12 and contact the sheet molding material 12. During the transmission of the sheet molding material 12, the two picking plates 113 traverse both sides of the sheet molding material 12. When a bulge appears on one side, that is, there is a foreign object on the sheet molding material 12, the picking plate 113 on the corresponding side will be pressed and swing around the movable connection end. As the picking plate 113 swings, it can trigger the rotation sensor 114 to generate a signal. This signal can be used as a control instruction for the molding mechanism. By controlling the molding mechanism not to perform the molding operation in the next stage, that is, the feeding action, the sheet molding material 12 in this area is directly transmitted to the receiving drum 8 for winding, so as to avoid the molding operation of foreign objects or abnormal sheet molding materials 12, thereby improving the qualified rate of the cover plate.

[0071] In addition, in the present invention, the two picking plates 113 can scrape the surface of the sheet molding compound 12 to a certain extent to remove certain impurities. Figure 1、 Figure 11 and Figure 12 As shown, an air cylinder 115 or an air bag can be provided below the upper film. The output end of the air cylinder 115 is connected to one side of the crossbar 111 through a pipe 116 and communicates with the area formed between the two picking plates 113 and the sheet molding compound 12. An ash collecting trough 117 is provided at the end of the crossbar 111 away from the pipe 116.

[0072] When the upper film is moving downward to perform the molding operation, the sheet molding material 12 is in a stationary state. The upper film is pressed downward to push the air cylinder 115 or the air bag to perform the exhaust operation. The gas enters one side of the cross bar 111 through the pipe 116 and blows to the area formed between the two picking plates 113 and the sheet molding material 12, blowing the impurities scraped by the picking plates 113 to the dust collecting trough 117; an independent one-way air inlet is provided on the air cylinder 115 or the air bag, which does not affect the upward movement of the upper film and the resetting of the air cylinder 115 or the air bag. By repeating the above action, the impurities scraped by the air cylinder 115 or the air bag can be cleaned synchronously with each molding action.

[0073] The above describes the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. After knowing the contents described in the present invention, ordinary technicians in this technical field can make several equivalent changes and substitutions without departing from the principles of the present invention. These equivalent changes and substitutions should also be regarded as falling within the scope of protection of the present invention.

Claims

1. An automatic forming device for a lithium battery module cover, comprising a reel and a forming mechanism, wherein the forming mechanism comprises an upper die and a lower die, wherein sheet molding compound is wound on the reel and fed by the reel between the upper die and the lower die, and the upper die and / or the lower die are moved to perform the forming operation, characterized in that: The upper mold includes an upper mold cavity and an upper knife groove arranged on the periphery of the upper mold cavity, an upper blade slides in the upper knife groove, and the lower mold includes a lower mold cavity and a lower knife groove arranged on the periphery of the lower mold cavity, a lower blade slides in the lower knife groove; wherein the upper blade and the lower blade are arranged and configured to slidably reciprocate between a first position and a second position, wherein in the first position, the upper blade and the lower blade are retracted into the corresponding upper blade groove and the lower blade groove, and in the second position, the upper blade and the lower blade are partially in contact with each other; and When the upper mold and the lower mold are in contact, the upper blade and the lower blade are located at the first position. During the separation process of the upper mold and the lower mold, the upper blade and the lower blade are located at the second position at least once.

2. The automatic forming equipment for lithium battery module cover according to claim 1, characterized in that: The molding mechanism further includes a knife-out mechanism, which is configured to drive the upper blade and the lower blade to switch from a first position to a second position at least once during the separation process of the upper mold and the lower mold.

3. The automatic forming equipment for lithium battery module cover according to claim 2, characterized in that: The knife-discharging mechanism comprises: Two reciprocating mechanisms are respectively arranged on the upper die at one side of the upper blade and the lower die at one side of the lower blade. When the reciprocating mechanisms are started, the upper blade and the lower blade are synchronously driven to switch between the first position and the second position; A matching block is mounted on a side of the upper die facing the lower die, and a first linkage gear and a first linkage rack are provided on the matching block. The first linkage gear is linked to the reciprocating mechanism in the upper die, and when the first linkage gear rotates, the linked reciprocating mechanism is driven to start; A matching groove is provided on a side of the lower die facing the upper die, wherein a second linkage gear and a second linkage rack are provided in the matching groove, wherein the second linkage gear is linked to a reciprocating mechanism in the upper die, and when the second linkage gear rotates, the linked reciprocating mechanism is driven to start; and When the matching block is inserted into the matching groove, the first linkage rack is meshed with the second linkage gear, and the second linkage rack is meshed with the first linkage gear.

4. The automatic forming equipment for lithium battery module cover plates according to claim 3, characterized in that: The first linkage gear and the second linkage gear both include an outer gear and an inner wheel. The inner wheel is linked to the reciprocating mechanism. The outer gear and the inner wheel are configured so that when the mating block moves out of the mating groove, the outer gear drives the inner wheel to rotate in one direction.

5. The automatic forming equipment for lithium battery module cover according to any one of claims 1 to 4, characterized in that: The upper blade and the lower blade are provided with a plurality of sets of teeth on opposite sides, and each set of teeth includes: a first cutting tooth, wherein when the upper blade and the lower blade are in contact with each other, the first cutting tooth on the upper blade contacts the first cutting tooth on the lower blade; second cutting teeth, wherein when the upper blade and the lower blade are in contact with each other, the second cutting teeth on the upper blade and the second cutting teeth on the lower blade are spaced apart by a preset distance; and The first cutting teeth and the second cutting teeth are alternately distributed on the corresponding upper blade and lower blade.

6. The automatic forming equipment for lithium battery module cover according to claim 3, characterized in that: A convex strip is provided between the upper mold cavity and the upper knife groove, a guide groove is provided between the lower mold cavity and the lower knife groove, a guide plate is movably installed in the guide groove, and the guide plate is configured to swing downward toward the lower mold cavity side into the guide groove when under pressure.

7. The automatic forming equipment for lithium battery module cover according to claim 6, characterized in that: A reset mechanism is installed on the guide plate, and the reset mechanism is configured to drive the guide plate to reset and swing when the guide plate is not subjected to force.

8. The automatic forming equipment for lithium battery module cover plates according to claim 7, characterized in that: The reset mechanism comprises: a return spring mounted on the guide plate, and the return spring tends to drive the guide plate to move toward the return state; The piston assembly includes a piston rod connected to the guide plate, a piston cylinder matched with the piston rod, a first branch pipe and a second branch pipe provided at one end of the piston cylinder away from the piston rod, a one-way air valve installed at the end of the first branch pipe, and the one-way air valve controls the one-way discharge of gas in the first branch pipe; An air hole is provided in the matching groove, and the second branch pipe port is connected to the air hole. The air hole is arranged to be covered and closed by the matching block when the matching block enters the matching groove, and to open when the matching block leaves the matching groove.

9. The automatic forming equipment for lithium battery module cover plates according to claim 1, characterized in that: Also includes: The receiving drum is located on the side of the molding mechanism away from the winding drum and is used to receive and reel in the sheet molding compound output from the molding mechanism; A discharge mechanism is located between the receiving cylinder and the forming mechanism and is used to transfer the formed cover plate on the sheet molding compound roll output from the forming mechanism; A plurality of rollers are distributed on the sheet molding compound transmission path.

10. The automatic forming equipment for lithium battery module cover according to claim 9, characterized in that: A picking mechanism is installed between the winding drum and the molding mechanism. The picking mechanism includes a pair of picking plates. The two picking plates are respectively distributed on both sides of the sheet molding compound. One end of the picking plate is in contact with the sheet molding compound, and the other end is movably arranged. A rotation sensor is installed on the movable end. The rotation sensor is used to output a signal to control the molding mechanism to perform a material feeding action when the picking plate rotates.

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