Plastic part pressing structure

Abstract

The invention discloses a plastic part pressing structure which comprises a base, a plurality of supporting legs are arranged at the top of the base, a positioning plate is fixedly arranged at the tops of the supporting legs, a lower pressing head is fixedly arranged at the top of the positioning plate, and a machining bottom plate is fixedly arranged at the top of the base. A hot-pressing panel is detachably arranged at the top of the machining bottom plate, and detection mechanisms used for detecting whether the plastic parts deform, overflow glue and warp in the pressing process are fixedly arranged on the positioning plate in the circumferential direction close to the hot-pressing panel. According to the device, the detection mechanism is arranged, whether deformation occurs in the hot pressing process or not is detected through the deformation detection assembly, whether edge warping occurs in the hot pressing process or not is detected through the edge warping detection assembly, and whether wire drawing occurs in the hot pressing process or not is detected through the wire drawing detection assembly, so that the overall pressing condition of the plastic part in the pressing process is monitored; and the formation problem is found from the reflected problems, so that the later pressing efficiency is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of parts processing, and in particular to a plastic part pressing structure. Background Art

[0002] At present, in the field of parts processing, due to functional requirements, there is a type of parts that are formed by injection molding of metal inserts. The existing metal-plastic parts are molded by separately molding the metal inserts and the plastic parts, and then pressed together by mechanical means to form the final parts.

[0003] However, the current pressing device has the following shortcomings:

[0004] 1. It is impossible to detect whether the plastic parts are deformed, overflowed, or have wire drawing during the pressing process;

[0005] 2. It is impossible to monitor the pressure distribution during the pressing process, resulting in the inability to actively avoid deformation of plastic parts during pressing. Summary of the Invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a plastic part pressing structure.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A plastic part pressing structure includes a base, a supporting leg on the top of the base, and a plurality of supporting legs. A positioning plate is fixedly provided on the top of the plurality of supporting legs, a downward pressure head is fixedly provided on the top of the positioning plate, a processing base plate is fixedly provided on the top of the base, a hot pressing panel is detachably provided on the top of the processing base plate, and a detection mechanism for detecting whether the plastic part is deformed, overflowed, or warped during the pressing process is fixed on the positioning plate and close to the circumferential direction of the hot pressing panel. A plurality of observation mechanisms for detecting whether the pressure is uniform are evenly provided on the top of the processing base plate near the bottom of the hot pressing panel in the circumferential direction.

[0009] Preferably, the detection mechanism includes a first electric push rod, a second electric push rod, a detection plate, a deformation detection component for detecting whether the plastic part is deformed during the pressing process, a warping detection component for detecting whether the plastic part is warped during the pressing process, and a wire drawing detection component for detecting whether the plastic part is wiredrawing during the pressing process, the output end of the first electric push rod is fixedly connected to the second electric push rod, the output end of the second electric push rod is fixedly connected to the detection plate, the deformation detection component is fixedly connected to the positioning plate, and the warping detection component and the wire drawing detection component are both fixedly connected to the detection plate.

[0010] Preferably, the deformation detection component includes a sliding block, a winding belt, a positioning frame, a detection rod and a first switch, a groove for sliding the sliding block is provided at the bottom of the positioning plate, and a spring is fixed between the side wall of the sliding block in the groove and the positioning plate, both ends of the inner core shaft of the winding belt are rotatably connected to the positioning plate through bearings, and the winding belt is fixedly connected to the sliding block, the positioning frame is fixedly connected to the top of the positioning plate, and the detection rod is rotatably connected to the inner wall of the positioning frame through a bearing, the detection rod and the winding belt core shaft are transmitted by a gear set, and the first switch is fixedly connected to the inner wall of the positioning frame and is abutted against the detection rod.

[0011] Preferably, the warping detection assembly includes a transfer plate, a telescopic rod and a bonding plate. A slot for the transfer plate to move is passed through the inside of the detection plate. A screw slide is fixedly provided on one side wall of the detection plate, and the transfer plate is fixedly connected to the slider on the screw slide. There are multiple telescopic rods and they are fixedly connected to the bottom of the transfer plate. The telescopic end of the telescopic rod is fixedly connected to the bonding plate.

[0012] Preferably, the wire drawing detection assembly includes a connecting plate, a locking plate, a rotating plate, an abutment wheel and a second switch. The side wall of the connecting plate is fixedly connected to the side wall of the detection plate. There are two locking plates and both are fixedly connected to the top of the connecting plate. A rod body passes through the inside of the rotating plate, and both ends of the rod body are rotatably set between the two locking plates through bearings. A gear is fixedly connected to one side wall of the rod body, and the abutment wheel is fixedly connected to a side wall of a locking plate through a bearing, and a plurality of teeth meshing with the gear are fixed on the side wall of the abutment wheel. The second switch is fixedly connected to the top of the connecting plate and abuts against the abutment wheel.

[0013] Preferably, the observation mechanism includes a fixed head, a lever, a rocker plate, a fulcrum plate, a square frame, a movable plate, a tooth plate, a combining plate, a connecting frame, a detection wheel, a third switch and a gravity block. The fixed head is fixedly connected to the bottom of the hot pressing panel, one end of the lever is provided with a spherical hinge to the fixed head, two fulcrum plates are provided and fixedly connected to the processing base plate, the other end of the lever is rotatably connected to the two fulcrum plates by bearings, the rocker plate is fixedly connected to one end of the lever, the bottom of the square frame is fixedly connected to the processing base plate, and the movable plate is slidably connected to the square frame on both sides. The gear wheel is connected to the gear box, and the gear box is meshed with the gear plate. The gear box is connected to the gear box by a toothed connection, and the toothed connection is fixedly provided with a toothed connection. The gear wheel is meshed with the gear plate. The other side wall of the connecting plate is fixedly connected to the connecting frame, and the inner wall of the connecting frame is rotatably connected to the detection wheel through a bearing, and the detection wheel is fixedly connected to the center of the gear. The third switch is fixedly connected to the inner wall of the detection frame and is abutted against the detection wheel. The gravity block is engaged with the bottom of the movable plate.

[0014] The present invention has the following beneficial effects:

[0015] 1. This device is equipped with detection mechanisms to detect whether deformation occurs during hot pressing through a deformation detection component, whether warping occurs during hot pressing through a warping detection component, and whether wire drawing occurs during hot pressing through a wire drawing detection component. This monitors the overall pressing condition of the plastic parts during the pressing process, identifies the source of the problem from the reported problem, and improves the efficiency of subsequent pressing.

[0016] 2. This device is equipped with an observation mechanism to detect whether the hot pressing plate is evenly pressed and monitor the pressure distribution during the pressing process, which can actively avoid deformation of plastic parts during pressing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the structure of the overall device proposed by the present invention Figure 1 ;

[0018] Figure 2 Schematic diagram of the structure of the overall device proposed by the present invention Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the enlarged structure of the liquid detection mechanism proposed in the present invention;

[0020] Figure 4 This is a bottom-up structural diagram of the deformation detection assembly proposed in the present invention;

[0021] Figure 5 This is a schematic diagram of the positioning frame connection structure proposed by the present invention;

[0022] Figure 6 This is a schematic diagram of the connection structure between the warping detection component and the wire drawing detection component proposed in the present invention;

[0023] Figure 7 This is an enlarged structural diagram of the warping detection component proposed in the present invention;

[0024] Figure 8 This is a schematic diagram of the enlarged structure of the wire drawing detection assembly proposed in the present invention;

[0025] Figure 9 This is an enlarged structural diagram of the observation mechanism proposed in the present invention;

[0026] Figure 10 This is an enlarged structural diagram of a single-group observation mechanism proposed in the present invention;

[0027] Figure 11 This is a schematic diagram of the connection structure of the third switch proposed in the present invention.

[0028] Figure: 1. Base; 2. Positioning plate; 3. Press head; 4. Processing base; 5. Hot pressing panel; 6. Detection mechanism; 61. First electric push rod; 62. Second electric push rod; 63. Detection plate; 64. Deformation detection assembly; 641. Sliding block; 642. Winding belt; 643. Positioning frame; 644. Detection rod; 645. First switch; 65. Warping detection assembly; 651. Transfer plate; 652. Telescopic rod; 653 , bonding plate; 66, wire drawing detection assembly; 661, connecting plate; 662, locking plate; 663, rotating plate; 664, abutment wheel; 665, second switch; 7, observation mechanism; 71, fixed head; 72, lever; 73, rocker plate; 74, fulcrum plate; 75, square frame; 76, movable plate; 77, tooth plate; 78, combining plate; 79, connecting frame; 710, detection wheel; 711, third switch; 712, gravity block. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] Example 1: Reference Figure 1 - Figure 8 , including a base 1, with supporting legs on the top of the base 1, and a plurality of supporting legs, a positioning plate 2 is fixed on the top of the multiple supporting legs, a pressing head 3 is fixed on the top of the positioning plate 2, a processing base plate 4 is fixed on the top of the base 1, and a hot pressing panel 5 is detachably provided on the top of the processing base plate 4. A detection mechanism 6 for detecting whether the plastic parts are deformed, overflowed, or warped during the pressing process is fixed on the positioning plate 2 and close to the circumferential direction of the hot pressing panel 5.

[0031] The detection mechanism 6 includes a first electric push rod 61, a second electric push rod 62, a detection plate 63, a deformation detection component 64 for detecting whether the plastic part is deformed during the pressing process, a warping detection component 65 for detecting whether the plastic part is warped during the pressing process, and a wire drawing detection component 66 for detecting whether the plastic part is wiredrawing during the pressing process. The output end of the first electric push rod 61 is fixedly connected to the second electric push rod 62, the output end of the second electric push rod 62 is fixedly connected to the detection plate 63, the deformation detection component 64 is fixedly connected to the positioning plate 2, and the warping detection component 65 and the wire drawing detection component 66 are both fixedly connected to the detection plate 63.

[0032] The deformation detection component 64 includes a sliding block 641, a winding belt 642, a positioning frame 643, a detection rod 644 and a first switch 645. A groove for sliding the sliding block 641 is provided at the bottom of the positioning plate 2, and a spring is fixed between the side wall of the sliding block 641 and the positioning plate 2 in the groove. Both ends of the inner core shaft of the winding belt 642 are rotatably connected to the positioning plate 2 through bearings, and the winding belt 642 is fixedly connected to the sliding block 641. The positioning frame 643 is fixedly connected to the top of the positioning plate 2, and the detection rod 644 is rotatably connected to the inner wall of the positioning frame 643 through a bearing. The detection rod 644 and the core shaft of the winding belt 642 are transmitted by a gear set. The first switch 645 is fixedly connected to the inner wall of the positioning frame 643 and is abutted against the detection rod 644.

[0033] The warping detection assembly 65 includes a transfer plate 651, a telescopic rod 652 and a bonding plate 653. A slot is passed through the inside of the detection plate 63 for the transfer plate 651 to move. A screw slide is fixedly provided on one side wall of the detection plate 63, and the transfer plate 651 is fixedly connected to the slider on the screw slide. There are multiple telescopic rods 652 and they are fixedly connected to the bottom of the transfer plate 651. The telescopic end of the telescopic rod 652 is fixedly connected to the bonding plate 653.

[0034] The wire drawing detection assembly 66 includes a connecting plate 661, a locking plate 662, a rotating plate 663, an abutment wheel 664 and a second switch 665. The side wall of the connecting plate 661 is fixedly connected to the side wall of the detection plate 63. There are two locking plates 662 and both are fixedly connected to the top of the connecting plate 661. A rod body passes through the rotating plate 663, and both ends of the rod body are rotatably set between the two locking plates 662 through bearings. A gear is fixedly connected to one side wall of the rod body, and the abutment wheel 664 is fixedly connected to a side wall of a locking plate through a bearing, and the side wall of the abutment wheel 664 is fixedly provided with a plurality of teeth meshing with the gear. The second switch 665 is fixedly connected to the top of the connecting plate 661 and abuts against the abutment wheel 664.

[0035] In this embodiment: first, the hot pressing panel 5 to be used is fixed to the processing base plate 4, and the position of the detection plate 63 is adjusted by the first electric push rod 61 and the second electric push rod 62 so that the surface of the detection plate 63 is in contact with the side wall of the hot pressing panel 5. When the lower pressing head 3 is pressed down, the deformation detection component 64 is used to detect whether deformation occurs during the hot pressing process. When deformation occurs at a certain angle, glue overflows and the shape is irregular. The protruding glue will push the detection plate 63 to slide inside the groove. When the sliding block 641 slides, it drives the winding belt 642 to unwind. When the winding belt 642 unwinds, it drives the core shaft to rotate. The rotation of the core shaft drives the detection rod 644 to rotate through the gear set. The detection rod 644 is separated from the abutment against the first switch 645 and a signal is generated, indicating that the shape of the plastic part has changed.

[0036] The warping detection component 65 detects whether warping occurs during the hot pressing process. When a plastic part at a certain angle warps, the warped plastic part abuts the corresponding laminating plate 653, causing the laminating plate 653 to expand and contract. Whether warping occurs can be determined by observing whether multiple laminating plates 653 are on the same horizontal plane.

[0037] The wire drawing detection component 66 is used to detect whether wire drawing occurs during the hot pressing process. During the hot pressing process, if there is no wire drawing, the plastic part will not contact the rotating plate 663 when demolding, and the rotating plate 663 will remain in place under the action of the torsion spring. The second switch 665 is not triggered, and the alarm device does not work; when wire drawing problems occur during hot pressing, during the demolding of the plastic part, in the process of opening the mold, the adhesion will cause some abnormal movement or pulling of the plastic part when it is separated from the mold. This abnormal movement will cause the surface of the plastic part to hit the rotating plate 663 and drive the rotating plate 663 to change direction. The rotating plate 663 overcomes the elastic force of the torsion spring and rotates, causing the rotating plate 663 to break away from the abutment against the second switch 665, causing the second switch 665 to generate a signal, which can be connected to the power button. After the alarm device receives the signal, the power is turned off.

[0038] Example 2:

[0039] Reference Figure 9 - Figure 11 The difference from the first embodiment is that a plurality of observation mechanisms 7 for detecting whether the pressure is uniform are evenly provided on the top of the processing base plate 4 near the bottom of the hot pressing panel 5 in the circumferential direction.

[0040] The observation mechanism 7 includes a fixed head 71, a lever 72, a rocker plate 73, a fulcrum plate 74, a square frame 75, a movable plate 76, a tooth plate 77, a combining plate 78, a connecting frame 79, a detection wheel 710, a third switch 711 and a gravity block 712. The fixed head 71 is fixedly connected to the bottom of the hot pressing panel 5. One end of the lever 72 is connected to the fixed head 71 through a spherical hinge. There are two fulcrum plates 74 and they are fixedly connected to the processing base plate 4. The other end of the lever 72 is rotatably connected to the two fulcrum plates 74 through bearings. The rocker plate 73 is fixedly connected to one end of the lever 72. The bottom of the square frame 75 is fixedly connected to the processing base plate 4. The movable plate 76 slides on both sides of the square frame 75. The cam 76 is connected to the workpiece 4 and a reset spring is fixedly provided between the top of the movable plate 76 and the inner wall of the square frame 75. One side wall of the movable plate 76 is fixedly connected to the tooth plate 77 and one side wall of the square frame 75 is penetrated by a slide groove for the tooth plate 77 to slide. The combining plate 78 is fixedly connected to the processing base plate 4 and one side wall is provided with a gear rotatably provided through a bearing, and the gear is meshed with the tooth plate 77. The other side wall of the combining plate 78 is fixedly connected to the connecting frame 79, and the inner wall of the connecting frame 79 is rotatably connected to the detection wheel 710 through a bearing, and the detection wheel 710 is fixedly connected to the center of the gear. The third switch 711 is fixedly connected to the inner wall of the detection frame and is abutted against the detection wheel 710. The gravity block 712 is engaged with the bottom of the movable plate 76.

[0041] In this embodiment, the observation mechanism 7 is based on the principle of lever 72. When the hot pressing panel 5 is pressed, the plate body generates pressure on one end of the lever 72. Even if the hot pressing panel 5 does not move as a whole, the uneven local pressure may cause slight elastic deformation. For example, when the pressure in a certain area increases, the hot pressing panel 5 may be slightly bent or compressed. Although this deformation is small, it is amplified by the principle of lever 72, which is enough to drive the lever 72 to rotate through the connecting bearing on the fulcrum plate 74, drive the rocker plate 73 to tilt upward, thereby abutting the movable plate 76, causing the movable plate 76 to slide inside the square frame 75, and at the same time drive the tooth plate 77 to rise, the tooth plate 77 drives the gear to rotate, and the rotation of the gear drives the detection wheel 710 When the contact with the third switch 711 is broken, the second switch 665 generates a signal of uneven pressure. The position of the second switch 665 can be reset. Assuming that the rotation within 5 degrees is the normal range, the second switch 665 can be moved to a position outside 5 degrees. When it is rotated to contact the second switch 665, it indicates uneven pressure. By setting the gravity block 712, according to the characteristics of the lever 72, the different lengths of the force arm will cause the force to be amplified or reduced. The distance relationship between the position of the connecting weight and the fulcrum of the lever 72 and the force point can be designed to amplify or reduce the pressure acting on the detection object. In this way, the pressure can be flexibly adjusted according to actual detection needs to adapt to pressure detection with different ranges and accuracies.

[0042] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A plastic component pressing structure, comprising a base (1), characterized in that: The base (1) has a supporting leg on the top, and the supporting legs are provided in plurality. Positioning plates (2) are fixed on the tops of the supporting legs, and a lower pressure head (3) is fixed on the tops of the positioning plates (2). A processing base plate (4) is fixed on the tops of the base (1), and a hot pressing panel (5) is detachably provided on the tops of the processing base plate (4). A detection mechanism (6) for detecting whether the plastic part is deformed, overflowed, or warped during the pressing process is fixed on the positioning plate (2) and in a circumferential direction close to the hot pressing panel (5). A plurality of observation mechanisms (7) for detecting whether the pressure is uniform are evenly provided on the tops of the processing base plate (4) and in a circumferential direction close to the bottoms of the hot pressing panel (5).

2. The plastic part pressing structure according to claim 1, characterized in that: The detection mechanism (6) comprises a first electric push rod (61), a second electric push rod (62), a detection plate (63), a deformation detection component (64) for detecting whether the plastic part is deformed during the pressing process, a warping detection component (65) for detecting whether the plastic part is warped during the pressing process, and a wire drawing detection component (66) for detecting whether the plastic part is wire drawing during the pressing process. The output end of the first electric push rod (61) is fixedly connected to the second electric push rod (62), the output end of the second electric push rod (62) is fixedly connected to the detection plate (63), the deformation detection component (64) is fixedly connected to the positioning plate (2), and the warping detection component (65) and the wire drawing detection component (66) are both fixedly connected to the detection plate (63).

3. The plastic part pressing structure according to claim 2, characterized in that: The deformation detection component (64) includes a sliding block (641), a winding belt (642), a positioning frame (643), a detection rod (644) and a first switch (645). A groove for sliding the sliding block (641) is provided at the bottom of the positioning plate (2), and a spring is fixedly provided between the side wall of the sliding block (641) and the positioning plate (2) in the groove. Both ends of the inner core shaft of the winding belt (642) are rotatably connected to the positioning plate (2) through bearings, and the winding belt (642) is fixedly connected to the sliding block (641). The positioning frame (643) is fixedly connected to the top of the positioning plate (2), and the detection rod (644) is rotatably connected to the inner wall of the positioning frame (643) through a bearing. The detection rod (644) and the core shaft of the winding belt (642) are arranged to be driven by a gear set. The first switch (645) is fixedly connected to the inner wall of the positioning frame (643) and is arranged to abut against the detection rod (644).

4. The plastic component pressing structure according to claim 2, characterized in that: The warping detection assembly (65) includes a transfer plate (651), a telescopic rod (652) and a bonding plate (653). A slot for the transfer plate (651) to move is penetrated inside the detection plate (63). A screw slide is fixedly provided on one side wall of the detection plate (63), and the transfer plate (651) is fixedly connected to a slider on the screw slide. A plurality of telescopic rods (652) are provided and are fixedly connected to the bottom of the transfer plate (651). The telescopic end of the telescopic rod (652) is fixedly connected to the bonding plate (653).

5. The plastic component pressing structure according to claim 2, characterized in that: The wire drawing detection assembly (66) includes a connecting plate (661), a locking plate (662), a rotating plate (663), an abutting wheel (664) and a second switch (665). The side wall of the connecting plate (661) is fixedly connected to the side wall of the detection plate (63). There are two locking plates (662) and both are fixedly connected to the top of the connecting plate (661). A rod body is passed through the interior of the rotating plate (663), and both ends of the rod body are rotatably arranged between the two locking plates (662) through bearings. A gear is fixedly connected to one side wall of the rod body. The abutting wheel (664) is fixedly connected to a side wall of a locking plate through a bearing, and a plurality of teeth meshing with the gear are fixedly provided on the side wall of the abutting wheel (664). The second switch (665) is fixedly connected to the top of the connecting plate (661) and abuts against the abutting wheel (664).

6. The plastic component pressing structure according to claim 1, characterized in that: The observation mechanism (7) comprises a fixed head (71), a lever (72), a rocker plate (73), a fulcrum plate (74), a square frame (75), a movable plate (76), a tooth plate (77), a coupling plate (78), a connecting frame (79), a detection wheel (710), a third switch (711) and a gravity block (712); the fixed head (71) is fixedly connected to the bottom of the hot pressing panel (5); one end of the lever (72) is connected to the fixed head (71) via a spherical hinge; two fulcrum plates (74) are provided and fixedly connected to the processing base plate (4); the other end of the lever (72) is rotatably connected to the two fulcrum plates (74) via bearings; the rocker plate (73) is fixedly connected to one end of the lever (72); the bottom of the square frame (75) is fixedly connected to the processing base plate (4); the movable plate (76) is fixedly connected to the square frame (75); The two sides of the square frame (75) are slidably connected, and a reset spring is fixedly provided between the top of the movable plate (76) and the inner wall of the square frame (75); one side wall of the movable plate (76) is fixedly connected to the tooth plate (77), and one side wall of the square frame (75) is penetrated by a slide groove for the tooth plate (77) to slide; the combining plate (78) is fixedly connected to the processing base plate (4) and one side wall is provided with a gear for rotation through a bearing, and the gear is meshed with the tooth plate (77); the other side wall of the combining plate (78) is fixedly connected to the connecting frame (79), and the inner wall of the connecting frame (79) is rotatably connected to the detection wheel (710) through a bearing, and the detection wheel (710) is fixedly connected to the center of the gear; the third switch (711) is fixedly connected to the inner wall of the detection frame and is abutted against the detection wheel (710); the gravity block (712) is engaged with the bottom of the movable plate (76).

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