SMC sheet molding device and molding method thereof

Abstract

This invention discloses an SMC sheet forming device and method applied to the field of forming equipment technology. This solution, through the setting of an edge-finishing unit, can refine the edges of the sheet in real time, thereby effectively reducing the abnormal amplitude of the sheet edges. This allows the final sheet edges to be more consistent with the center, enabling minimal or even zero-cutting operations, thus solving the problems of material waste and finished product quality caused by cutting in existing technologies. Furthermore, with the addition of bidirectional monitoring rollers, simultaneous monitoring of the sheet edges in both the lateral and vertical directions can be achieved, further improving the monitoring effect and facilitating more precise cutting operations. This results in more accurate quality control of the formed SMC sheet and improved finished product quality.

Description

Technical Field

[0001] This invention relates to the technical field of molding equipment, and in particular to an SMC sheet molding apparatus and molding method. Background Technology

[0002] SMC sheet is a sheet-shaped molded composite material made by impregnating short fibers or fiber mats with resin paste and covering the surface with a polyethylene film. Its main components include unsaturated polyester resin, glass fiber, filler and thickener, and its performance can be optimized by adjusting the crosslinking agent.

[0003] Existing SMC sheet forming equipment often results in defects such as thinner or thicker edges and unevenness compared to the center due to the material's special properties and the high temperature during pressing. This leads to poor overall uniformity and the need for edge trimming after pressing. Examples include the SMC plastic sheet extrusion molding equipment disclosed in Chinese patent application CN118107141A and another SMC plastic sheet extrusion molding equipment disclosed in Chinese patent CN114953512B. This method not only easily leads to material waste but also to the breakage of some glass fibers within the sheet, affecting the quality of the formed SMC sheet. Summary of the Invention

[0004] The core of this invention lies in the fact that by setting up an edge-tidying unit, the edge of the sheet can be tidyed up in real time, thereby effectively reducing the abnormal amplitude of the sheet edge. This makes the final sheet edge and center more consistent, achieving the smallest possible cutting range or even zero cutting, thus solving the problems of material waste and finished product quality caused by cutting in the prior art.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] An SMC sheet forming device includes a support frame. Multiple sets of forming rollers linked by a synchronous chain are mounted on the upper end of the support frame. A control box is installed on the side of the support frame, and a drive motor is installed at the bottom of the support frame. The drive motor directly drives one set of forming rollers via a sprocket assembly. Adjustment components are installed at both ends of the forming roller sets. The adjustment components are fixedly connected to the upper end of the support frame by bolts. The forming roller set includes a support roller and a pressing roller located directly above the support roller, and the two do not contact each other. The adjustment components include a U-shaped arm fixedly connected to the support frame, an adjusting block slidably connected to the inner side of the U-shaped arm, and a screw threadedly connected to the upper end of the adjusting block. A cover plate is fixedly connected to the upper end of the U-shaped arm, and the screw moves through the cover plate. The ends of the support roller and the pressing roller are connected to the U-shaped arm and the adjusting block respectively via bearings and bearing seats.

[0007] The end faces of two adjacent U-shaped arms near the forming roller assembly are fixedly connected to a base plate. An edge finishing unit is fixedly installed on the base plate. The edge finishing unit includes a back plate fixedly connected to the base plate, a finishing plate fixedly connected to the back plate facing the forming roller assembly, and an electric push rod fixedly connected between the back plate and the finishing plate. The finishing plate includes two monitoring sections, an adjustment section located between the two monitoring sections, and two transition layers fixedly connected between the adjustment section and the adjacent monitoring section. Two edge monitoring components are also installed on the edge finishing unit.

[0008] Furthermore, two mutually symmetrical limiting rings are fixedly connected to the outer end of the bearing roller. The length of the pressing roller is the same as the axial gap between the two limiting rings, and the pressing roller is located between the two limiting rings.

[0009] Furthermore, the transition layer is made of a high-temperature resistant elastic material, and the surface of the transition layer is coated with a nano-coating. Both the adjustment section and the monitoring section are rigid structures.

[0010] Furthermore, the edge monitoring component is a laser rangefinder installed on the monitoring section, with the upper surface of the base plate maintaining the same height as the outer ring of the bearing roller.

[0011] Optionally, the edge monitoring component includes two support rods fixedly connected to one end of the monitoring section facing the forming roller group and a bidirectional monitoring roller rotatably connected between the two support rods. The support rods have elongated holes, in which a horizontal monitoring unit is installed, and the bidirectional monitoring roller has a vertical monitoring unit installed inside.

[0012] Furthermore, the transverse monitoring unit includes a pressure sensor installed on the inner wall of the side of the elongated hole away from the forming roller assembly, and a slidable support strip connected in the elongated hole. One end of the support strip is fixedly connected to the detection end of the pressure sensor, and the other end of the support strip contacts the pivot point of the bidirectional monitoring roller. The support strip is made of a highly resilient material.

[0013] Furthermore, the bidirectional monitoring roller near the feed side includes two end plates, a central shaft fixed through the two end plates, and an outer elastic sleeve connected between the two end plates. The vertical monitoring unit is set in the space enclosed by the end plates and the outer elastic sleeve.

[0014] Furthermore, the vertical monitoring unit includes multiple piezoelectric ceramic fixed plates uniformly and fixedly connected to the outer end of the central shaft, multiple piezoelectric ceramic movable plates movably sleeved outside the central shaft, and multiple sets of sensing wedges uniformly and fixedly connected to the inner wall of the outer elastic sleeve. The multiple piezoelectric ceramic movable plates are respectively located between the multiple piezoelectric ceramic fixed plates, and the lower end of the piezoelectric ceramic movable plates is chiseled with an embedded groove matching the piezoelectric ceramic fixed plates. The multiple sets of sensing wedges are respectively located between two adjacent piezoelectric ceramic movable plates.

[0015] Furthermore, an annular groove is cut into the upper end of the piezoelectric ceramic moving piece. The depth of the annular groove is greater than the axial gap between the two piezoelectric ceramic moving pieces. The edges of the sensing wedge and the piezoelectric ceramic moving piece that are close to each other are inclined, and the two inclined points are in contact with each other when no external force is applied.

[0016] An SMC sheet forming method using an SMC sheet forming apparatus includes the following steps:

[0017] S1. The unshaped SMC sheet is fed into the multi-component forming roller group through the pre-processing equipment and is extruded by the multi-component forming roller group;

[0018] S2. The edge monitoring component between two adjacent forming roller groups monitors the edge of the extruded SMC sheet. When the edge of the SMC sheet shows outward deformation or abnormal thickness change, the electric push rod is controlled to extend, so that the adjustment section extends to the target position. Under the right angle formed by the adjustment section and the base plate, the edge of the SMC sheet is tidied up, making the edge more regular.

[0019] S3. Through the coordinated extrusion of multiple forming roller groups and the edge finishing effect of the edge finishing unit, SMC sheets can achieve small-amplitude edge cutting or even edge-free cutting, and finally be unloaded from the unloading platform.

[0020] Compared with the prior art, the advantages of this invention are:

[0021] (1) This solution can process the edge of the sheet in real time by setting the edge processing unit, thereby effectively reducing the abnormal amplitude of the sheet edge, so that the final sheet edge and the center can be consistent, and the cutting can be done with the smallest possible amplitude, or even zero cutting, to solve the problems of material waste and finished product quality caused by cutting in the prior art.

[0022] (2) By setting up bidirectional monitoring rollers, the horizontal and vertical sides of the sheet edge can be monitored simultaneously, further improving the monitoring effect of the sheet edge, facilitating more precise cutting operations, making the quality control of the formed SMC sheet more accurate, and improving the quality of the finished product. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present invention;

[0024] Figure 2 This is a perspective view of the present invention from another angle;

[0025] Figure 3 This is a perspective view of the forming roller assembly of the present invention;

[0026] Figure 4 This is a partial exploded view of the forming roller assembly of the present invention;

[0027] Figure 5 This is a front view of the present invention;

[0028] Figure 6 This is a perspective view of the edge integral unit of the present invention;

[0029] Figure 7 This is a top view of the edge integral unit of the present invention;

[0030] Figure 8 This is a perspective view of another edge integral unit of the present invention;

[0031] Figure 9 This is a top view of the bidirectional monitoring roller portion of the present invention;

[0032] Figure 10 This is a front cross-sectional view of the bidirectional monitoring roller of the present invention;

[0033] Figure 11 This is a radial cross-sectional view of the bidirectional monitoring roller of the present invention;

[0034] Figure 12 This is a front cross-sectional view of the bidirectional monitoring roller of the present invention being squeezed by the edge of an SMC sheet;

[0035] Figure 13 This is a comparative schematic diagram of the vertical monitoring unit of the present invention before and after being subjected to edge compression of SMC sheet.

[0036] Explanation of the labels in the diagram:

[0037] 1. Bracket, 101. Drive motor, 102. Control box, 2. Forming roller group, 21. Bearing roller, 22. Pressing roller, 201. Limiting ring, 3. Feeding platform, 4. Adjustment component, 41. U-shaped arm, 42. Adjustment block, 43. Cover plate, 44. Screw, 501. Base plate, 502. Laser rangefinder, 5. Edge finishing unit, 51. Back plate, 521. Adjustment section, 522. Transition layer, 523. Monitoring section, 53. Electric push rod, 6. Bidirectional monitoring roller, 61. End plate, 62. Central shaft, 63. Outer elastic sleeve, 641. Sensing wedge, 642. Piezoelectric ceramic moving plate, 643. Piezoelectric ceramic stationary plate, 601. Support rod, 602. Alignment strip, 603. Pressure sensor, 604. Annular groove. Detailed Implementation

[0038] The technical solutions will now be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention.

[0039] First implementation method:

[0040] like Figures 1-2An SMC sheet forming device includes a support 1. Multiple sets of forming rollers 2 linked by a synchronous chain are arranged on the upper end of the support 1. A control box 102 is installed on the side of the support 1. A drive motor 101 is installed at the bottom of the support 1. The drive motor 101 directly drives one of the forming rollers 2 through a sprocket assembly. The synchronous chain and sprocket assembly are existing technologies and will not be described in detail here.

[0041] like Figures 3-4 The forming roller group 2 is equipped with adjustment components 4 at both ends. The adjustment components 4 are fixedly connected to the upper end of the support 1 by bolts. The forming roller group 2 includes a bearing roller 21 and a pressing roller 22 located directly above the bearing roller 21. The two do not contact each other. The adjustment components 4 include a U-shaped arm 41 fixedly connected to the support 1, an adjusting block 42 slidably connected to the inner side of the U-shaped arm 41, and a screw 44 threadedly connected to the upper end of the adjusting block 42. A cover plate 43 is fixedly connected to the upper end of the U-shaped arm 41. The screw 44 moves through the cover plate 43. The ends of the bearing roller 21 and the pressing roller 22 are respectively connected to the U-shaped arm 41 and the adjusting block 42 through bearings and bearing seats. By turning the screw 44, the adjusting block 42 can be moved up and down in the U-shaped arm 41, thereby adjusting the position of the pressing roller 22 relative to the support 1. Therefore, according to actual needs, the axial gap between the two surfaces that are close to each other can be adjusted, so that the thickness of the extruded SMC sheet is adjustable, making the application range of this device wider.

[0042] It is worth noting that an annular groove is provided on the outside of the screw 44. The annular groove matches the edge of the hole through which the cover plate 43 is penetrated, so that when the screw 44 is turned, the rotation of the screw 44 in place can be restricted, thereby driving the adjusting block 42 and the pressing roller 22 on it to move up and down.

[0043] Two mutually symmetrical limiting rings 201 are fixedly connected to the outer end of the bearing roller 21. The length of the pressing roller 22 is the same as the axial gap between the two limiting rings 201, and the pressing roller 22 is located between the two limiting rings 201. By limiting the limiting rings 201, the width of the entire SMC sheet can be effectively limited, and the edge is retracted and tidied up each time it is pressed, thereby greatly reducing the accumulation of edge deformation caused by multiple extrusions, and thus effectively preventing the sheet width from being greater than the distance between the two limiting rings 201.

[0044] like Figure 1 and Figure 6 The two adjacent U-shaped arms 41 are fixedly connected to a base plate 501 on the end face near the forming roller group 2. An edge finishing unit 5 is fixedly installed on the base plate 501. Figure 7As shown, the edge finishing unit 5 includes a back plate 51 fixedly connected to the base plate 501, a finishing plate fixedly connected to the back plate 51 on the side facing the forming roller group 2, and an electric push rod 53 fixedly connected between the back plate 51 and the middle of the finishing plate. The finishing plate includes two monitoring sections 523, an adjustment section 521 located between the two monitoring sections 523, and two transition layers 522 fixedly connected between the adjustment section 521 and the adjacent monitoring section 523, respectively. The transition layer 522 is made of a high-temperature resistant elastic material, and the surface of the transition layer 522 is coated with a nano-coating. The adjustment section 521 and the monitoring section 523 are both rigid structures.

[0045] like Figure 5 The upper surface of the base plate 501 is at the same height as the outer ring of the bearing roller 21, so that the sheet pressed from the bearing roller 21 and the pressing roller 22 can move stably onto the base plate 501. At the same time, the base plate 501 can also effectively support the sheet between the two forming roller groups 2, so that it is not easy for the edge to deform downward at the gap between them, thereby effectively suppressing the abnormality at the edge and reducing the subsequent cutting amount.

[0046] Two edge monitoring components are also installed on the edge finishing unit 5. The edge monitoring component is a laser rangefinder 502 installed on the monitoring section 523. The laser rangefinder 502 near the feeding side can effectively monitor the distance between the edge of the SMC sheet after it has been pressed by the forming roller group 2 and the laser rangefinder 502. If the edge deforms downward or is uneven, the data obtained by the laser rangefinder 502 will fluctuate greatly. After obtaining this signal, the control box 102 controls the electric push rod 53 to extend, thereby driving the adjustment section 521 to move to the predetermined position (the position where the adjustment section 521 is flush with the limiting ring 201). At this point, by adjusting the vertical restriction of section 521 and the horizontal restriction of base plate 501, the edge of the sheet is tidied up, making the edge and center of SMC more consistent. Compared with the existing technology, the amount of cutting is greatly reduced, thereby effectively reducing material waste. The laser rangefinder 502, which is far away from the feeding side, is used to check the edge tidiness of the sheet. If the data detected by the edge monitoring components on both sides of the forming roller group 2, which is close to the feeding side, are consistent, and the data detected by the laser rangefinder 502 are consistent with the preset value (the vertical distance from the laser rangefinder 502 to the inner wall of the limiting ring 201), it means that the tidiness effect is good, and no further cutting is required.

[0047] In summary, this solution, through the setting of edge trimming unit 5, can trim the edge of the sheet in real time, thereby effectively reducing the abnormal amplitude of the sheet edge, so that the final sheet edge and center are more consistent, and can achieve the smallest possible cutting or even zero cutting, thus solving the problems of material waste and finished product quality caused by cutting in the prior art.

[0048] Second implementation method:

[0049] This embodiment differs from the first embodiment in that it changes the specific settings of the edge monitoring component, while the rest remains the same as the first embodiment.

[0050] like Figure 8 The edge monitoring component includes two support rods 601 fixedly connected to one end of the monitoring section 523 facing the forming roller group 2, and a bidirectional monitoring roller 6 rotatably connected between the two support rods 601. The support rods 601 have elongated holes, such as... Figure 9 A transverse monitoring unit is installed inside the elongated hole, and a vertical monitoring unit is installed inside the bidirectional monitoring roller 6. The transverse monitoring unit includes a pressure sensor 603 installed on the inner wall of the side of the elongated hole away from the forming roller group 2, and a slidably connected padding strip 602 inside the elongated hole. One end of the padding strip 602 is fixedly connected to the detection end of the pressure sensor 603, and the other end of the padding strip 602 contacts the pivot point of the bidirectional monitoring roller 6. The padding strip 602 is made of a highly resilient material. After being pressed by the forming roller group 2, if the edge of the sheet deforms outward, it will move closer to the side of the bidirectional monitoring roller 6 and contact the bidirectional monitoring roller 6, causing the bidirectional monitoring roller 6 to move towards the side of the pressure sensor 603, causing the pressure sensor 603 to show a significant increase in data. Based on this, the adjustment section 521 can be moved immediately to promptly tidy up the edge of the sheet, making its edge and center more consistent, improving the overall uniformity, and reducing the amount of cutting at the edge after forming.

[0051] It is worth noting that the two corners of the base plate 501 near the forming roller group 2 are cut so that the lower end plate 61 is located below the base plate 501, thereby effectively ensuring that the vertical monitoring unit can completely monitor the edge. In addition, from a top view, the edge of the bidirectional monitoring roller 6 is flush with the inner wall of the limiting ring 201 near the middle of the bearing roller 21. When the sheet is pressed, it will directly contact the bidirectional monitoring roller 6. If its edge deforms outward, it can immediately act on the bidirectional monitoring roller 6, causing the pressure sensor 603 to generate data, thereby effectively ensuring the monitoring effect of the edge.

[0052] like Figures 10-11The bidirectional monitoring roller 6 near the feed side includes two end plates 61, a central shaft 62 fixedly passing through the two end plates 61, and an outer elastic sleeve 63 connecting the two end plates 61. A vertical monitoring unit is set within the space enclosed by the end plates 61 and the outer elastic sleeve 63. The vertical monitoring unit includes multiple piezoelectric ceramic fixed plates 643 uniformly fixedly connected to the outer end of the central shaft 62, multiple piezoelectric ceramic movable plates 642 movably sleeved outside the central shaft 62, and multiple sets of sensing wedges 641 uniformly fixedly connected to the inner wall of the outer elastic sleeve 63. The multiple piezoelectric ceramic movable plates 642 are respectively located between the multiple piezoelectric ceramic fixed plates 643, and the lower end of the piezoelectric ceramic movable plates 642 has an embedded groove matching the piezoelectric ceramic fixed plates 643. The multiple sets of sensing wedges 641 are respectively located between two adjacent piezoelectric ceramic movable plates 642. The edges of the sensing wedges 641 and the piezoelectric ceramic movable plates 642 that are close to each other are inclined, and the two inclined points contact each other without external force. Figures 12-13 When the sheet is squeezed by the edge, the corresponding outer elastic sleeve 63 will deform and indent towards the bidirectional monitoring roller 6, causing the corresponding sensing wedge 641 to move. Due to the inclined contact between the sensing wedge 641 and the piezoelectric ceramic moving plate 642, the piezoelectric ceramic moving plate 642 will be pushed upward, so that it will come into contact with the adjacent piezoelectric ceramic stationary plate 643 above, thereby generating a current. The sensing wedge 641, the piezoelectric ceramic moving plate 642 and the piezoelectric ceramic stationary plate 643 in opposite positions are regarded as a group of sensing units. The control box 102 can determine the vertical distribution range of the sheet edge based on the number of current-generating sensing units. Compared with the first embodiment, it can not only monitor the abnormal extension of the lateral edge, but also monitor the thickness of the edge, making the acquisition of the abnormality more accurate. This facilitates the subsequent accurate cutting of the abnormal edge, effectively avoiding over-cutting while ensuring the quality of the finished product, and reducing material waste.

[0053] An annular groove 604 is cut into the upper end of the piezoelectric ceramic moving piece 642. The depth of the annular groove 604 is greater than the axial gap between the two piezoelectric ceramic moving pieces 642. The annular groove 604 provides sufficient moving space for the sensing wedge 641, which facilitates the triggering of the sensing unit.

[0054] An SMC sheet forming method using an SMC sheet forming apparatus includes the following steps:

[0055] S1. The unshaped SMC sheet is fed into the multi-component forming roller group 2 through the pre-processing equipment and is extruded by the multi-component forming roller group 2.

[0056] S2. The edge monitoring component between two adjacent forming roller groups 2 monitors the edge of the extruded SMC sheet. When the edge of the SMC sheet shows outward deformation or abnormal thickness change, the electric push rod 53 is controlled to extend, so that the adjustment section 521 extends to the target position. Under the right angle formed by the adjustment section 521 and the base plate 501, the edge of the SMC sheet is tidied up, making the edge more regular.

[0057] S3. Through the coordinated extrusion of multiple forming roller groups 2 and the edge finishing effect of edge finishing unit 5, SMC sheet can achieve small-amplitude edge cutting or even edge-free cutting, and finally be unloaded from the unloading platform 3.

[0058] By setting up the bidirectional monitoring roller 6, the horizontal and vertical aspects of the sheet edge can be monitored simultaneously, further improving the monitoring effect of the sheet edge, facilitating more precise cutting operations, making the quality control of the formed SMC sheet more accurate, and improving the quality of the finished product.

[0059] The above description is merely a preferred embodiment of the present invention; it encompasses all the protection scope of the present invention. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in the present invention, based on the technical solutions and improved concepts of the present invention, should be covered within the protection scope of the present invention.

Claims

1. An SMC sheet forming apparatus, comprising a support (1), wherein multiple sets of forming rollers (2) linked by a synchronous chain are arranged at the upper end of the support (1), a control box (102) is installed at the side end of the support (1), and a drive motor (101) is installed at the bottom of the support (1), wherein the drive motor (101) directly drives one set of forming rollers (2) through a sprocket assembly, characterized in that: The forming roller group (2) is provided with adjustment components (4) at both ends. The adjustment components (4) are fixedly connected to the upper end of the bracket (1) by bolts. The forming roller group (2) includes a bearing roller (21) and a pressing roller (22) located directly above the bearing roller (21), and the two do not contact each other. The adjustment components (4) include a U-shaped arm (41) fixedly connected to the bracket (1), an adjustment block (42) slidably connected to the inner side of the U-shaped arm (41), and a screw (44) threadedly connected to the upper end of the adjustment block (42). A cover plate (43) is fixedly connected to the upper end of the U-shaped arm (41), and the screw (44) moves through the cover plate (43). The ends of the bearing roller (21) and the pressing roller (22) are respectively connected to the U-shaped arm (41) and the adjustment block (42) through bearings and bearing seats. The two adjacent U-shaped booms (41) are fixedly connected to a base plate (501) on the side of the forming roller group (2). An edge finishing unit (5) is fixedly installed on the base plate (501). The edge finishing unit (5) includes a back plate (51) fixedly connected to the base plate (501), a finishing plate fixedly connected to the side of the back plate (51) facing the forming roller group (2), and an electric push rod (53) fixedly connected between the back plate (51) and the middle of the finishing plate. The finishing plate includes two monitoring sections (523), an adjustment section (521) located between the two monitoring sections (523), and two transition layers (522) fixedly connected between the adjustment section (521) and the adjacent monitoring section (523). Two edge monitoring components are also installed on the edge finishing unit (5). The edge monitoring component includes two support rods (601) fixedly connected to one end of the monitoring section (523) facing the forming roller group (2) and a bidirectional monitoring roller (6) rotatably connected between the two support rods (601), wherein a vertical monitoring unit is provided inside the bidirectional monitoring roller (6); The bidirectional monitoring roller (6) near the feed side includes two end plates (61), a central shaft (62) fixedly passing through the two end plates (61), and an outer elastic sleeve (63) connected between the two end plates (61). The vertical monitoring unit is set in the space enclosed by the end plates (61) and the outer elastic sleeve (63). The vertical monitoring unit includes multiple piezoelectric ceramic plates (643) uniformly fixedly connected to the outer end of the central shaft (62) and multiple movable sleeves on the center. The piezoelectric ceramic moving piece (642) outside the shaft (62) and multiple sets of sensing wedges (641) uniformly fixedly connected to the inner wall of the outer elastic sleeve (63) are provided. The multiple piezoelectric ceramic moving pieces (642) are located between multiple piezoelectric ceramic fixed pieces (643), and the lower end of the piezoelectric ceramic moving piece (642) is chiseled with an embedded groove matching the piezoelectric ceramic fixed piece (643). The multiple sets of sensing wedges (641) are located between two adjacent piezoelectric ceramic moving pieces (642).

2. The SMC sheet forming apparatus according to claim 1, characterized in that: The outer end of the bearing roller (21) is fixedly connected to two mutually symmetrical limiting rings (201). The length of the pressing roller (22) is the same as the axial gap between the two limiting rings (201), and the pressing roller (22) is located between the two limiting rings (201).

3. The SMC sheet forming apparatus according to claim 1, characterized in that: The transition layer (522) is made of a high-temperature resistant elastic material, and the surface of the transition layer (522) is coated with a nano-coating. The adjustment section (521) and the monitoring section (523) are both rigid structures.

4. The SMC sheet forming apparatus according to claim 1, characterized in that: The edge monitoring component is a laser rangefinder (502) installed on the monitoring section (523), and the upper surface of the base plate (501) is at the same height as the outer ring of the bearing roller (21).

5. The SMC sheet forming apparatus according to claim 1, characterized in that: The support rod (601) has an elongated hole, and a horizontal monitoring unit is installed in the elongated hole.

6. The SMC sheet forming apparatus according to claim 5, characterized in that: The transverse monitoring unit includes a pressure sensor (603) installed on the inner wall of the side of the elongated hole away from the forming roller group (2) and a slidable replacement strip (602) in the elongated hole. One end of the replacement strip (602) is fixedly connected to the detection end of the pressure sensor (603), and the other end of the replacement strip (602) is in contact with the pivot point of the bidirectional monitoring roller (6). The replacement strip (602) is made of a highly resilient material.

7. An SMC sheet forming apparatus according to claim 6, characterized in that: The upper end of the piezoelectric ceramic moving piece (642) is chiseled with an annular groove (604). The depth of the annular groove (604) is greater than the axial gap between the two piezoelectric ceramic moving pieces (642). The edges of the sensing wedge (641) and the piezoelectric ceramic moving piece (642) that are close to each other are inclined, and the two inclined parts are in contact with each other when no external force is applied.

8. The SMC sheet forming method of the SMC sheet forming apparatus according to claim 7, characterized in that: Includes the following steps: S1. The unshaped SMC sheet is fed into the multi-component forming roller group (2) through the pre-processing equipment and is squeezed by the multi-component forming roller group (2); S2. The edge monitoring component between two adjacent forming roller groups (2) monitors the edge of the extruded SMC sheet. When the edge of the SMC sheet shows outward deformation or abnormal thickness change, the electric push rod (53) is controlled to extend, so that the adjustment section (521) extends to the target position. Under the right angle formed by the adjustment section (521) and the base plate (501), the edge of the SMC sheet is tidied up, so that the edge tends to be regular. S3. Through the coordinated extrusion of multiple forming roller groups (2) and the edge finishing effect of the edge finishing unit (5), the SMC sheet can achieve small-amplitude edge cutting or even edge-free cutting, and finally be unloaded from the unloading platform (3).

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