Adjustable sheet forming die

Abstract

This application relates to an adjustable sheet forming mold, comprising an upper mold body, a lower mold body, and a sealing plate. The mating surfaces of the upper and lower mold bodies are each provided with a main flow channel and a secondary flow channel. After the upper and lower mold bodies are closed, the two main flow channels form a main flow channel, and the two secondary flow channels form a secondary flow channel. The length direction of the main flow channel is parallel to the length direction of the upper mold body. A main material outlet is provided on one side of the main flow channel, and the secondary flow channel is located on the same side as the main material outlet. An auxiliary material outlet is provided at one end of the secondary flow channel. There are two secondary flow channels, and their other ends are respectively connected to the two ends of the main flow channel. An upper mold lip is connected to the end of the upper mold body away from the main material outlet, and a lower mold lip is connected to the end of the lower mold body away from the main material outlet. After the upper and lower mold lips are closed, an outlet is formed. The sealing plate is connected to both ends of the upper mold body and covers both ends of the main flow channel and the outlet. The auxiliary material is made of PP material with good tensile strength, which wraps the main material, reducing tearing during demolding and improving production efficiency.

Description

Technical Field

[0001] This application relates to the field of molds, and in particular to an adjustable sheet forming mold. Background Technology

[0002] In the structure of a lithium battery, the separator is one of the key internal components. The performance of the lithium battery separator determines the battery's interface structure, internal resistance, and other characteristics, directly affecting the battery's capacity, cycle life, and safety performance.

[0003] Currently, the production of plastic sheets and films generally uses flat molds capable of extruding sheets. The mold head consists of an upper mold and a lower mold. After the upper and lower molds are closed, a gap is left at the mold lip for material extrusion. PP material used to produce lithium battery separators is injected into the flat mold, and PP sheets are extruded.

[0004] The utility model patent with authorization publication number CN202238997U discloses a sheet extrusion mold, which has an upper mold plate, a lower mold plate, and sealing plates at both ends. The mating surfaces of the upper mold plate and the lower mold plate are respectively provided with a cavity and a semi-circular hole communicating with the cavity. After the upper mold plate and the lower mold plate are assembled by the sealing plates, the cavity forms a flow channel, and the semi-circular hole forms a feed port for the raw material to flow in. The gap between the mating surfaces of the upper mold plate and the lower mold plate at the lower end of the flow channel forms a discharge port. The flow channel is a coat hanger type flow channel. The two sides of the discharge port are also provided with plug modules that can control the discharge width of the discharge port.

[0005] However, because the materials used to produce lithium battery separators have low solubility, slow flow rate, and high shrinkage rate, they are prone to tearing and separation during the unloading process, which reduces production efficiency. Summary of the Invention

[0006] To improve production efficiency, this application provides an adjustable sheet forming die.

[0007] This application provides an adjustable sheet forming die using the following technical solution:

[0008] An adjustable sheet forming mold includes an upper mold body, a lower mold body, and a sealing plate. The mating surfaces of the upper and lower mold bodies are each provided with a main flow channel and a secondary flow channel. After the upper and lower mold bodies are closed, the two main flow channels form a main flow channel, and the two secondary flow channels form a secondary flow channel. The length direction of the main flow channel is parallel to the length direction of the upper mold body. A main material outlet is provided on one side of the main flow channel, and the secondary flow channel is located on the same side as the main material outlet. An auxiliary material outlet is provided at one end of the secondary flow channel. There are two secondary flow channels, and the other ends of the two secondary flow channels are respectively connected to the two ends of the main flow channel. The main flow channel is used for the flow of main material, and the secondary flow channel is used for the flow of auxiliary material. An upper mold lip is connected to the end of the upper mold body away from the main material outlet, and a lower mold lip is connected to the end of the lower mold body away from the main material outlet. After the upper and lower mold lips are closed, an outlet is formed, which is connected to the main flow channel. The sealing plate is connected to both ends of the upper mold body and covers both ends of the main flow channel and the outlet.

[0009] By adopting the above technical solution, the main material flows from the main material outlet to the main flow channel, and the auxiliary material flows from the auxiliary material outlet to the secondary flow channel, and then to both ends of the main flow channel. The auxiliary material is made of PP material with good tensile strength, which can wrap the outer periphery of the main material. The main material and the auxiliary material are extruded together from the discharge outlet. Because the auxiliary material wraps the main material, the tearing and pulling of the main material during the demolding process is reduced, and the production efficiency is improved.

[0010] Preferably, it also includes adjusting members, wherein there are two adjusting members, and the two adjusting members are slidably embedded at both ends of the main channel.

[0011] By adopting the above technical solution, after successful demolding, the useless edge trimming needs to be cut off. By changing the position of the adjusting part, the width of the auxiliary material can be controlled, thereby controlling the width of the edge trimming. This improves production efficiency, reduces waste of auxiliary materials, and lowers production costs.

[0012] Preferably, the adjusting member is provided with a guide hole, one end of which is connected to the secondary flow channel and the other end of which is connected to the main flow channel.

[0013] By adopting the above technical solution, the auxiliary material flows from the secondary flow channel through the guide hole to the main flow channel, while the main material is limited by the adjusting component and flows to the discharge port. The pressure of the main material is low, and the auxiliary material fills the space away from the main material at the discharge port and wraps the edge of the main material. The sliding of the adjusting component can shorten the width of the auxiliary material while lengthening the width of the main material, and vice versa, thereby reducing space waste and improving production efficiency.

[0014] Preferably, the end of the adjusting member facing away from the sealing plate is provided with a guide surface, and the distance from the guide surface to the sealing plate decreases as it moves away from the main feed inlet.

[0015] By adopting the above technical solution, the main material flows from the main material outlet into the main channel, and then flows along the guide surface to the discharge outlet, reducing the waste of resources caused by the main material adhering to the regulating components.

[0016] Preferably, the outer periphery of the adjusting member is provided with a guide groove, one end of the guide groove is connected to the secondary flow channel, and the other end of the guide groove is connected to the discharge port.

[0017] By adopting the above technical solution, the auxiliary material flows from the secondary flow channel through the guide groove to the discharge port, while the main material is limited by the adjusting component and flows to the discharge port. The pressure of the main material is low, and the auxiliary material fills the space away from the main material at the discharge port and wraps the edge of the main material. The sliding of the adjusting component can shorten the width of the auxiliary material while lengthening the width of the main material, and vice versa, thereby reducing space waste and improving production efficiency.

[0018] Preferably, the width of the guide channel increases as it moves away from the secondary flow channel, and the end of the guide channel away from the secondary flow channel extends toward the end of the main material inlet.

[0019] By adopting the above technical solution, the auxiliary material flows from the secondary flow channel through the guide channel to the outlet. The auxiliary material begins to wrap the main material at the connection between the guide channel and the main flow channel, which reduces the tearing and pulling of the main material during the demolding process and improves production efficiency.

[0020] Preferably, it also includes a lead screw, which is threadedly connected to the sealing plate, and one end of the lead screw is rotatably connected to an adjusting member.

[0021] By adopting the above technical solution, rotating the lead screw pushes the adjusting component to slide within the main channel, thereby adjusting the width of the auxiliary material, which is easy to operate.

[0022] Preferably, the upper mold body is provided with a fixing groove, and the lower mold body is provided with a fixing hole, and the bolt passes through the fixing hole and is threaded to the inner wall of the fixing groove.

[0023] By adopting the above technical solution, the upper mold body and the lower mold body are fixed by bolts, which makes the connection stable and easy to replace.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. The main material flows from the main material outlet to the main flow channel, and the auxiliary material flows from the auxiliary material outlet to the secondary flow channel, and then to both ends of the main flow channel. The auxiliary material is made of PP material with good tensile strength, which can wrap the outer periphery of the main material. The main material and the auxiliary material are extruded together from the discharge outlet. Because the auxiliary material wraps the main material, the tearing and pulling of the main material during the demolding process is reduced, and the production efficiency is improved.

[0026] 2. After successful demolding, the useless edge binding needs to be trimmed. By changing the position of the adjusting part, the width of the auxiliary material can be controlled, thereby controlling the width of the edge binding. This improves production efficiency, reduces waste of auxiliary materials, and lowers production costs.

[0027] 3. The auxiliary material flows from the secondary flow channel through the guide groove to the discharge port, while the main material is limited by the adjusting component and flows to the discharge port. The main material has low pressure, and the auxiliary material fills the space away from the main material at the discharge port and wraps the edge of the main material. The sliding of the adjusting component shortens the width of the auxiliary material while lengthening the width of the main material, and vice versa, reducing space waste and improving production efficiency. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of an adjustable sheet forming mold.

[0029] Figure 2 This is a schematic diagram of the overall structure of the lower mold body, sealing plate, adjusting parts, lead screw, detection components, and lower mold lip.

[0030] Figure 3 This is a schematic diagram of the overall structure of the upper mold body, adjusting parts, and upper mold lip.

[0031] Figure 4 It is an exploded view of the upper mold body, sealing plate, adjusting parts, lead screw, detection components and upper mold lip.

[0032] Figure 5 This is a schematic diagram of the overall structure of an adjusting component.

[0033] Figure 6 This is a schematic diagram of the overall structure of another type of adjustment component.

[0034] Figure 7 This is a schematic diagram of the overall structure of another type of regulating component, mainly used to show the guide holes and guide surfaces.

[0035] Figure 8 This is a schematic diagram of the overall structure of the fixing plate, lead screw, and detection assembly.

[0036] Explanation of reference numerals in the attached drawings: 1. Upper mold body; 11. Main flow channel; 12. Secondary flow channel; 13. Main flow runner; 131. Main material inlet; 14. Secondary flow runner; 141. Auxiliary material inlet; 15. Fixing groove; 16. Mounting hole; 2. Lower mold body; 21. Fixing hole; 3. Sealing plate; 31. Sealing strip; 311. Connecting hole; 32. Fixing plate; 321. Insert groove; 322. Connecting port; 323. Mounting port; 324. Threaded hole; 325. Limiting plate; 326. Fixing post; 4. Adjusting component; 41. Adjusting block; 411, Positioning port; 412, Snap ring; 413, Guide groove; 414, Guide hole; 42, Guide block; 421, Guide surface; 5, Lead screw; 51, Ring body; 52, Rotating block; 53, Ring groove; 6, Detection assembly; 61, Rotating ring; 62, First rack; 63, Rotating rod; 64, Small gear; 65, Large gear; 66, Measuring rod; 661, Limiting groove; 662, Scale; 67, Second rack; 7, Upper die lip; 71, Discharge port; 8, Lower die lip. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0038] This application discloses an adjustable sheet forming mold. (Refer to...) Figure 1 and Figure 2 The adjustable sheet forming mold includes an upper mold body 1, a lower mold body 2, a sealing plate 3, an adjusting component 4, a lead screw 5, and a detection component 6.

[0039] Both the upper mold body 1 and the lower mold body 2 have a main flow channel 11 and a secondary flow channel 12 on their mating surfaces. The two ends of the main flow channel 11 extend along the length direction of the upper mold body 1. After the upper mold body 1 and the lower mold body 2 are closed, the two main flow channels 11 form a main flow channel 13. The length direction of the main flow channel 13 is parallel to the length direction of the upper mold body 1. A main material outlet 131 is provided on one side of the main flow channel 13. The main material outlet 131 extends along the width direction of the upper mold body 1, and the axis of the main material outlet 131 is collinear with the axis of symmetry of the upper mold body 1. The two secondary flow channels 12 form a secondary flow channel 14. There are two secondary flow channels 14. The two secondary flow channels 14 are V-shaped and located on the same side of the main flow channel 13 as the main material outlet 131. The secondary flow channels 14 are symmetrically arranged about the axis of the main material outlet 131. An auxiliary material outlet 141 is provided at the end of the secondary flow channel 14 away from the main flow channel 13. The ends of the two secondary flow channels 14 away from the auxiliary material outlet 141 are respectively connected to the two ends of the main flow channel 13. Main channel 13 is used for the flow of main materials, and secondary channel 14 is used for the flow of auxiliary materials.

[0040] Reference Figure 2 and Figure 3The upper mold body 1 is provided with a fixing groove 15, and the lower mold body 2 is provided with a fixing hole 21. The fixing hole 21 and the fixing groove 15 are both located between the main flow channel 11 and the secondary flow channel 12. There are multiple fixing grooves 15, which are spaced apart along the extension direction of the secondary flow channel 14. There are multiple fixing holes 21, and the number of fixing holes 21 is equal to that of fixing grooves 15. The multiple fixing holes 21 are arranged one-to-one with the multiple fixing grooves 15. After the bolt passes through the fixing hole 21, it is threaded to the inner wall of the fixing groove 15.

[0041] The upper mold body 1 is connected to an upper mold lip 7 at the end away from the main material outlet 131, and the lower mold body 2 is connected to a lower mold lip 8 at the end away from the main material outlet 131. After the upper mold lip 7 and the lower mold lip 8 are closed, an outlet 71 is formed. Along the thickness direction of the upper mold body 1, the width of the outlet 71 is smaller than the width of the main channel 13. Along the length direction of the upper mold body 1, the outlet 71 extends to both ends and is connected to the main channel 13. The distance from the main channel 13 to the end of the upper mold body 1 away from the upper mold lip 7 increases as the distance from the main channel 13 to the axis of the main material outlet 131 increases.

[0042] Reference Figure 2 and Figure 4 The sealing plate 3 includes a sealing strip 31 and a fixing plate 32. The fixing plate 32 has a groove 321 in which the sealing strip 31 is embedded. The end of the sealing strip 31 facing the bottom of the groove 321 has a connecting hole 311. The fixing plate 32 has a connecting port 322 in which the connecting port 322 communicates with the groove 321. There are three connecting ports 322 and three connecting holes 311 in total, and they are arranged in a one-to-one correspondence. The three connecting ports 322 are spaced apart along the length of the groove 321. The screw passes through the connecting port 322 and is threaded to the inner wall of the connecting hole 311. Two seals 31 and two fixing plates 32 are provided. The two seals 31 abut against the two ends of the upper mold body 1 and the upper mold lip 7 respectively on the side away from the bottom of the groove 321 and cover the main channel 13 and the discharge port 71. The length direction of the seals 31 is parallel to the width direction of the upper mold body 1. The fixing plate 32 is provided with a mounting port 323. The upper mold body 1, the lower mold body 2, the upper mold lip 7 and the lower mold lip 8 are each provided with a mounting hole 16. The screw passes through the mounting port 323 and is threaded to the inner wall of the mounting hole 16.

[0043] Reference Figure 4There are two adjusting components 4, which are slidably embedded at both ends of the main channel 13. The adjusting component 4 includes an adjusting block 41 and a guide block 42. The guide block 42 has a guide surface 421 at one end near the main material port 131. The distance from the guide surface 421 to the axis of the main material port 131 increases as it moves away from the auxiliary material port 141. Along the length direction of the upper mold body 1, the width of the guide block 42 decreases as it moves away from the main material port 131. One end of the adjusting block 41 is fixedly connected to the end of the guide block 42 away from the main feed port 131. The other end of the adjusting block 41 is coaxially provided with a positioning port 411. The fixing plate 32 is provided with a threaded hole 324. One end of the lead screw 5 passes through the threaded hole 324 and extends into the positioning port 411. A retaining ring 412 is connected to the inner wall of the positioning port 411. A ring body 51 is provided on the outer periphery of one end of the lead screw 5. The outer periphery of the ring body 51 is rotatably connected to the inner wall of the positioning port 411. The outer periphery of the lead screw 5 is rotatably connected to the inner wall of the retaining ring 412. The outer diameter of the ring body 51 is equal to the inner diameter of the positioning port 411. The outer diameter of the lead screw 5 is equal to the inner diameter of the retaining ring 412. The outer periphery of the lead screw 5 is threadedly connected to the inner wall of the threaded hole 324. The other end of the lead screw 5 is fixedly connected with a rotating block 52.

[0044] Reference Figure 2 and Figure 5 There are two types of adjusting blocks 41. One type of adjusting block 41 has a guide groove 413 on its outer periphery. One end of the guide groove 413 is connected to the secondary flow channel 12, and the other end of the guide groove 413 is connected to the discharge port 71. The width of the guide groove 413 increases as it moves away from the secondary flow channel 14. The end of the guide groove 413 away from the secondary flow channel 14 extends to one end of the guide block 42.

[0045] Reference Figure 2 and Figure 6 Another type of adjustment block 41 is provided with a guide hole 414. One end of the guide hole 414 is connected to the secondary flow channel 14, and the other end of the guide hole 414 is connected to the main flow channel 13. The length direction of the guide hole 414 is parallel to the length direction of the lower mold body 2.

[0046] Reference Figure 2 and Figure 7 The end of the guide hole 414 away from the secondary flow channel 14 extends to the end of the guide block 42.

[0047] Reference Figure 4 and Figure 5 The end of the guide surface 421 away from the main material inlet 131 is connected to the end of the guide channel 413 away from the main material inlet 131.

[0048] Reference Figure 4 and Figure 6The end of the guide surface 421 away from the main material port 131 is connected to the end of the guide hole 414 away from the main material port 131. The main material and the auxiliary material are separated by the end of the guide block 42 away from the main material port 131. By adjusting the position of the adjusting block 41, the dividing position between the main material and the auxiliary material is changed, thereby adjusting the width of the auxiliary material and the width of the main material.

[0049] Reference Figure 8 The detection component 6 includes a rotating ring 61, a first rack 62, a rotating rod 63, a pinion 64, a large gear 65, a measuring rod 66, and a second rack 67.

[0050] Reference Figure 4 and Figure 8 The outer periphery of the lead screw 5 is provided with an annular groove 53, and the rotating ring 61 is coaxially rotatably embedded in the annular groove 53. The first rack 62 is fixedly connected to the outer wall of the rotating ring 61. The length direction of the first rack 62 is parallel to the length direction of the lead screw 5. The side of the fixed plate 32 away from the upper mold body 1 is connected to a limiting plate 325. There are two limiting plates 325. The first rack 62 is located between the two limiting plates 325. The two sides of the first rack 62 are slidably connected to the two limiting plates 325 respectively.

[0051] A fixed post 326 is connected to the side of the fixed plate 32 away from the upper mold body 1. There are two fixed posts 326. The two ends of the rotating rod 63 are rotatably connected to the two fixed posts 326 respectively. The rotation axis of the rotating rod 63 is parallel to the fixed plate 32. The small gear 64 and the large gear 65 are both located between the two fixed posts 326. The small gear 64 and the large gear 65 are coaxially fixed to the outer periphery of the rotating rod 63. The outer periphery of the small gear 64 meshes with the first rack 62. The diameter of the large gear 65 is larger than the diameter of the small gear 64.

[0052] The measuring rod 66 is fixedly connected to the end of the fixed plate 32 away from the upper mold body 1. The end of the measuring rod 66 facing the large gear 65 is provided with a limiting groove 661. The length direction of the limiting groove 661 is parallel to the length direction of the first rack 62. The second rack 67 is embedded in the limiting groove 661. The end of the second rack 67 away from the bottom of the limiting groove 661 is engaged with the large gear 65. The outer periphery of the measuring rod 66 is provided with a scale 662.

[0053] The implementation principle of an adjustable sheet forming die in this application embodiment is as follows: the main material enters the main channel 13 from the main material inlet 131. Following the shape of the main channel 13, the main material flows towards both ends of the main channel 13 to fill it, and then is extruded towards the outlet 71 along the guide surface 421. The auxiliary material enters the secondary channel 14 from the two auxiliary material inlets 141, and after passing through the guide holes 414 or guide grooves 413, it contacts the boundary of the main material and is extruded together with the main material towards the outlet 71, achieving edge wrapping of the auxiliary material onto the main material. When it is necessary to reduce the width of the auxiliary material, the rotating block 52 is rotated to control the screw 5 to rotate, pushing the adjustment... The segment 41 moves closer to the end of the sealing plate 3, which widens the width of the main material and reduces the width of the auxiliary material. When it is necessary to increase the width of the auxiliary material, the rotating block 52 is rotated to control the screw 5 to rotate, which pushes the adjusting block 41 to move away from the sealing plate 3, which reduces the width of the main material and widens the width of the auxiliary material. The operation is simple. While adjusting the position of the adjusting block 41, the first rack 62 slides, the small gear 64 rotates and drives the large gear 65 to rotate, which causes the second rack 67 to slide, which amplifies the movement distance of the screw 5. The sliding distance of the second rack 67 is observed by the measuring rod 66, which makes it easy to control the width of the main material and the auxiliary material.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An adjustable sheet forming die, characterized in that: The mold includes an upper mold body (1), a lower mold body (2), and a sealing plate (3). The mating surfaces of the upper mold body (1) and the lower mold body (2) are provided with a main flow channel (11) and a secondary flow channel (12). After the upper mold body (1) and the lower mold body (2) are assembled, the two main flow channels (11) form a main flow channel (13), and the two secondary flow channels (12) form a secondary flow channel (14). The length direction of the main flow channel (13) is parallel to the length direction of the upper mold body (1). A main material outlet (131) is provided on one side of the main flow channel (13). The secondary flow channel (14) and the main material outlet (131) are located on the same side of the main flow channel (13). An auxiliary material outlet (141) is provided at one end of the secondary flow channel (14). The secondary flow channel (14) is provided in two parts, and the other ends of the two secondary flow channels (14) are respectively connected to the two ends of the main flow channel (13). The main flow channel (13) is used for the main material to flow, and the secondary flow channel (14) is used for the auxiliary material to flow. The upper mold body (1) is connected to the upper mold lip (7) at the end away from the main material port (131), and the lower mold body (2) is connected to the lower mold lip (8) at the end away from the main material port (131). After the upper mold lip (7) and the lower mold lip (8) are closed, they form the discharge port (71). The discharge port (71) is connected to the main flow channel (13). The sealing plate (3) is connected to both ends of the upper mold body (1) and covers both ends of the main flow channel (13) and the discharge port (71). It also includes two adjusting members (4), which are slidably embedded at both ends of the main channel (13); The outer periphery of the adjusting member (4) is provided with a guide groove (413), one end of the guide groove (413) is connected to the secondary flow channel (14), and the other end of the guide groove (413) is connected to the discharge port (71). The adjusting component (4) is provided with a guide hole (414), one end of which is connected to the secondary flow channel (14), and the other end of which is connected to the main flow channel (13). The adjusting member (4) has a guide surface (421) at one end away from the sealing plate (3), and the distance from the guide surface (421) to the sealing plate (3) decreases as it moves away from the main feed inlet (131); The width of the guide channel (413) increases as it moves away from the secondary channel (14), and the end of the guide channel (413) away from the secondary channel (14) extends toward the end of the main feed inlet (131).

2. The adjustable sheet forming die according to claim 1, characterized in that: It also includes a lead screw (5), which is threaded to the sealing plate (3), and one end of the lead screw (5) is rotatably connected to the adjusting member (4).

3. The adjustable sheet forming die according to claim 1, characterized in that: The upper mold body (1) is provided with a fixing groove (15), and the lower mold body (2) is provided with a fixing hole (21). The bolt passes through the fixing hole (21) and is threaded to the inner wall of the fixing groove (15).

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