A post-molding processing device for blow-molded articles

Abstract

This invention relates to the field of plastic processing technology, and more particularly to a post-processing apparatus for blow-molded parts. The technical problem is that most existing removal methods involve manual cutting with tools, followed by grinding of the cut edges, resulting in low processing efficiency. The post-processing apparatus for blow-molded parts includes a housing with a placement groove on it. A workpiece is placed in the placement groove. An electric push rod is mounted on the housing, and a pressure frame is mounted on the extension rod of the electric push rod. The pressure frame is slidably connected to the housing. Movement of the drive rod causes two positioning blocks to move closer together. The movement of the two positioning blocks causes a pressing rod to move, which in turn causes a second positioning block and a positioning plate to move closer together. During the movement of the positioning blocks, the second positioning block, and the positioning plate, the workpiece is pushed to the processing position, thereby correcting and fixing the position of the workpiece.

Description

Technical Field

[0001] This invention relates to the field of plastic processing technology, and in particular to a post-processing apparatus for blow-molded parts. Background Technology

[0002] Blow molding is a common plastic molding process widely used in the manufacture of various plastic products, such as bottles, containers, toys, and industrial parts. This process primarily involves heating plastic raw materials to melt them and form the desired shape in a mold. To facilitate the smooth flow of the molten plastic within the mold, channels are created for circulation. After molding, to optimize the final shape, excess plastic sprues generated by these channels typically need to be removed. Current methods mostly involve manual cutting with tools, followed by grinding of the cut edges, resulting in low processing efficiency. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the technical problem to be solved is to provide a post-processing device for blow-molded parts, which can correct and fix the position of the processed parts, and also grind the cut edges of the processed parts, thereby improving the processing efficiency of the processed parts.

[0004] The technical solution is as follows: A blow-molded part post-processing device includes a shell, a placement groove on the shell, a processing part placed on the placement groove, an electric push rod on the shell, a pressure frame on the telescopic rod of the electric push rod, the pressure frame and the shell being slidably connected, a material frame on the shell, and a fixing mechanism, a grinding mechanism and a material ejection mechanism on the shell.

[0005] Furthermore, the pressure frame is equipped with four cutting blades of different shapes.

[0006] Furthermore, the fixing mechanism includes guide rods, two guide rods are provided on the pressure frame, two transmission rods and two positioning blocks are slidably connected to the outer shell, the transmission rods and guide rods are engaged, the positioning blocks are engaged with the transmission rods, each positioning block is provided with a pressing rod, both pressing rods are slidably connected to the outer shell, the outer shell is slidably connected with a positioning block and a positioning plate, one pressing rod is engaged with the positioning block and the other pressing rod is engaged with the positioning plate.

[0007] Furthermore, the grinding mechanism includes a sliding mounting bracket, four sliding mounting brackets are rotatably connected to the pressure frame, each sliding mounting bracket is slidably connected to a slider, each slider is equipped with a grinding motor, each grinding motor output shaft is equipped with a grinding head, a return spring is connected between the slider and the sliding mounting bracket, each slider is equipped with a push rod, a rotary motor is provided on the pressure frame, and a transmission component is connected between the rotary motor and the four sliding mounting brackets.

[0008] Furthermore, four guide grooves of different shapes are opened inside the pressure frame. The shape of the guide grooves of the pressure frame is the same as the shape of the machining hole of the workpiece. The four push rods are respectively inserted into the four guide grooves of the pressure frame.

[0009] Furthermore, the top material mechanism includes a lifting frame, a lifting frame is slidably connected to the pressure frame, a pressure spring is connected between the lifting frame and the pressure frame, a top material rod assembly is provided on the lifting frame, the top material rod assembly includes four top material rods of different shapes, each of the four top material rods is provided with a rubber scraper ring, the four top material rods are slidably connected to the pressure frame, and four fixed pressure rods are provided on the outer shell.

[0010] Furthermore, it also includes an auxiliary mechanism. The outer shell is equipped with an auxiliary mechanism, which includes a lifting frame. The lifting frame is slidably connected inside the outer shell. Support rod 1, support rod 2, support rod 3, and support rod 4 are slidably connected to the lifting frame. A return spring 2 is connected between the lifting frame and support rod 1, support rod 2, support rod 3, and support rod 4. Two swing rods are rotatably connected inside the outer shell. Torsion springs are connected between the two swing rods and the outer shell. Both swing rods are engaged with the lifting frame. The pressure frame is equipped with two top rods 2, both of which are slidably connected to the outer shell.

[0011] Furthermore, each of the support rods has a lock hole.

[0012] Furthermore, the four cutting blades on the pressure frame are the same shape as support rod one, support rod two, support rod three and support rod four, respectively, but the cutting blades are larger.

[0013] Furthermore, it also includes a locking mechanism. The lifting frame is equipped with a locking mechanism, which includes a locking frame. The locking frame is slidably connected to the lifting frame. Several pressure springs are connected between the locking frame and the lifting frame. Two top rods are provided on the pressure frame.

[0014] The beneficial effects of this invention are as follows: 1. The movement of the guide rod will squeeze the transmission rod, causing the transmission rod to move away from the guide rod. The movement of the transmission rod will drive the two positioning blocks to move closer to each other. The movement of the two positioning blocks will drive the extrusion rod to move. The movement of the extrusion rod will drive the positioning block and the positioning plate to move closer to each other. During the movement of the positioning blocks, positioning blocks, and positioning plate, the workpiece will be pushed to the processing position, so that the position of the workpiece will be corrected and fixed.

[0015] 2. During the rotation of the push rod, it will be squeezed by the guide groove in the pressure frame, causing the slider to move back and forth along the slide groove of the sliding mounting bracket. This causes the grinding head to move in the shape of the guide groove of the pressure frame. The pressure frame continues to move closer to the workpiece, so that the grinding head will contact the cut edge of the workpiece. The extension rod of the electric push rod stops extending, and the rotating grinding head will grind the cut edge of the workpiece. During the grinding process, the grinding head will move along the shape of the groove hole in the workpiece, thereby fully grinding the workpiece.

[0016] 3. The movement of the lifting frame will cause support rods one, two, three, and four to move together, so that support rods one, two, three, and four will come into contact with the edge material to be cut at the processing hole of the workpiece. Then, the top rod two continues to move, and the squeezing force on the swing rod no longer increases. Subsequently, the cutting blade on the pressure frame will cut the workpiece. Because support rods one, two, three, and four support the bottom of the edge material of the workpiece, the cutting blade on the pressure frame can better cut the burrs on the workpiece, thereby improving the cutting quality of the burrs on the workpiece. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a three-dimensional structural diagram of the positioning block, extrusion rod, and material frame of the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the pressure frame of the present invention.

[0020] Figure 4 This is a three-dimensional structural diagram of the guide rod, positioning block 1, and transmission rod of the present invention.

[0021] Figure 5 This is a three-dimensional structural diagram of positioning block one, positioning block two, and positioning plate of the present invention.

[0022] Figure 6 This is a three-dimensional structural diagram of the sliding mounting bracket, top rod assembly, and pressure frame of the present invention.

[0023] Figure 7 This is a three-dimensional structural diagram of the sliding mounting bracket, rotating motor, and transmission assembly of the present invention.

[0024] Figure 8 This is a three-dimensional structural diagram of the sliding mounting bracket, slider, and return spring of the present invention.

[0025] Figure 9 This is a three-dimensional structural diagram of the lifting frame, the top material rod assembly, and the pressure spring of the present invention.

[0026] Figure 10 This is a three-dimensional structural diagram of the top rod, the swing rod, and the torsion spring of the present invention.

[0027] Figure 11 This is a three-dimensional structural diagram of the lifting frame and outer shell of the present invention.

[0028] Figure 12 This is a cross-sectional three-dimensional structural diagram of the lifting frame of the present invention.

[0029] Figure 13 This is a three-dimensional structural diagram of the locking frame and the second pressure spring of the present invention.

[0030] Figure 14 This is a three-dimensional structural diagram of the locking frame and the top rod three of the present invention.

[0031] Explanation of reference numerals in the attached drawings: 1_Outer shell, 2_Processed part, 3_Electric push rod, 4_Pressure frame, 5_Material frame, 61_Guide rod, 62_Transmission rod, 63_Positioning block one, 64_Extrusion rod, 65_Positioning block two, 66_Positioning plate, 71_Sliding mounting bracket, 72_Slider, 73_Reset spring one, 74_Grinding motor, 75_Grinding head, 76_Top rod one, 77_Rotation motor, 78_Transmission assembly, 81_Lifting frame, 82_Top rod assembly, 821_Rubber scraper ring, 83_Pressure spring one, 84_Fixed pressure rod, 91_Lifting frame, 92_Swing rod, 93_Torsion spring, 94_Top rod two, 95_Support rod one, 96_Support rod two, 97_Support rod three, 98_Support rod four, 99_Reset spring two, 101_Locking frame, 102_Pressure spring two, 103_Top rod three. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0033] Example 1: A post-processing device for blow-molded parts, such as Figures 1-9 As shown, it includes a housing 1 with a placement slot on the housing 1, on which a workpiece 2 is placed. An electric push rod 3 is provided on the housing 1, and a pressure frame 4 is provided on the telescopic rod of the electric push rod 3. The pressure frame 4 and the housing 1 are slidably connected. A material frame 5 is provided on the housing 1. A fixing mechanism, a grinding mechanism and a ejector mechanism are provided on the housing 1. The fixing mechanism is used to correct and fix the workpiece 2, the grinding mechanism is used to grind the workpiece 2, and the ejector mechanism is used to eject the waste material of the workpiece 2.

[0034] The pressure frame 4 is equipped with four cutting blades of different shapes.

[0035] The fixing mechanism includes guide rods 61. Two guide rods 61 are provided on the pressure frame 4. Two transmission rods 62 and two positioning blocks 63 are slidably connected to the outer shell 1. The transmission rods 62 and guide rods 61 are engaged, and the positioning blocks 63 are engaged with the transmission rods 62. Each of the two positioning blocks 63 is provided with a pressing rod 64. Both pressing rods 64 are slidably connected to the outer shell 1. A second positioning block 65 and a positioning plate 66 are slidably connected to the outer shell 1. One pressing rod 64 is engaged with the second positioning block 65, and the other pressing rod 64 is engaged with the positioning plate 66.

[0036] The grinding mechanism includes a sliding mounting bracket 71, four sliding mounting brackets 71 are rotatably connected to the pressure frame 4, each sliding mounting bracket 71 is slidably connected to a slider 72, each slider 72 is equipped with a grinding motor, each grinding motor 74 has a grinding head 75 on its output shaft, a return spring 73 is connected between the slider 72 and the sliding mounting bracket 71, each slider 72 is equipped with a push rod 76, the pressure frame 4 is equipped with a rotating motor 77, and a transmission assembly 78 is connected between the rotating motor 77 and the four sliding mounting brackets 71.

[0037] The pressure frame 4 has four guide grooves of different shapes. The shape of the guide grooves of the pressure frame 4 is the same as the shape of the machining hole of the workpiece 2. The four push rods 76 are respectively inserted into the four guide grooves of the pressure frame 4.

[0038] The top material mechanism includes a lifting frame 81, which is slidably connected to the pressure frame 4. A pressure spring 83 is connected between the lifting frame 81 and the pressure frame 4. The lifting frame 81 is provided with a top material rod assembly 82, which includes four top material rods of different shapes. Each of the four top material rods is provided with a rubber scraper ring 821. The four top material rods are slidably connected to the pressure frame 4. The outer shell 1 is provided with four fixed pressure rods 84.

[0039] Initially, the fixed pressure rod 84 presses the lifting frame 81, causing the lifting frame 81 to extend into the pressure frame 4. The pressure spring 83 is compressed, and the rubber scraper rings 821 on the four top rods of the top rod assembly 82 contact the cutting edge of the cutting blade on the pressure frame 4. The user places the workpiece 2 to be processed in the placement slot of the outer casing 1. Then, the user controls the extension rod of the electric push rod 3 to extend. The extension rod of the electric push rod 3 will drive the pressure frame 4 to move closer to the workpiece 2, causing the fixed pressure rod 84 to disengage from the lifting frame 81. The pressure spring 83 resets and causes the lifting frame 81 to extend out of the pressure frame 4. The movement of the lifting frame 81 causes the top rod assembly 82 to extend into the cutting blade of the pressure frame 4, and the rubber scraper rings 821 are compressed and retracted into the cutting blade.The movement of the pressure frame 4 causes the guide rod 61 to move as well. The movement of the guide rod 61 compresses the transmission rod 62, causing it to move away from the guide rod 61. This movement of the transmission rod 62 causes the two positioning blocks 63 to move closer together. The movement of the two positioning blocks 63 then causes the pressing rod 64 to move. The pressing rod 64 then causes the positioning block 65 and the positioning plate 66 to move closer together. During this movement, the positioning blocks 63, 65, and 66 push the workpiece 2 to the processing position, thus correcting and fixing its position. After the positioning blocks 63, 65, and 66 have fixed the workpiece 2, the pressure frame 4 continues to move, driving the guide rod 61 to continue moving. When rod 62 stops moving, the cutting blade on the pressure frame 4 will contact the workpiece 2. The workpiece 2 is restricted by the outer shell 1, causing the cutting blade to squeeze the workpiece 2, thereby cutting off the excess edge material on the slot of the workpiece 2. The pressure frame 4 continues to move. After the cutting blade cuts off the edge material on the workpiece 2, the cutting blade will pass through the workpiece 2. The user controls the output shaft of the grinding motor 74 and the rotary motor 77 to rotate. The rotation of the output shaft of the grinding motor 74 will drive the grinding head 75 to rotate. The rotation of the rotary motor 77 will drive the four sliding mounting brackets 71 to rotate through the transmission component 78. During the rotation of the sliding mounting brackets 71, the slider 72 will rotate together. During the rotation of the slider 72, the push rod 76 will rotate together. During the rotation of the push rod 76, The slider 72 is squeezed by the guide groove inside the pressure frame 4, causing it to reciprocate along the sliding groove of the sliding mounting bracket 71. This causes the grinding head 75 to move in the shape of the guide groove of the pressure frame 4. The pressure frame 4 continues to move closer to the workpiece 2, so that the grinding head 75 contacts the cut edge of the workpiece 2. The telescopic rod of the electric push rod 3 stops extending, and the rotating grinding head 75 grinds the cut edge of the workpiece 2. During the grinding process, the grinding head 75 moves along the shape of the groove in the workpiece 2, thus fully grinding the workpiece 2. After grinding, the output shafts of the rotating motor 77 and the grinding motor 74 stop rotating, and the telescopic rod of the electric push rod 3 retracts, causing the pressure frame 4 and the guide rod 61 to reset. The positioning block 1 63, positioning block 2 65 and positioning plate 66 are reset. During the reset of the pressure frame 4, the fixed pressure rod 84 will push the lifting frame 81 again, so that the lifting frame 81 will extend into the pressure frame 4. The pressure spring 1 83 is compressed, and the top material rod assembly 82 will extend the cutting blade of the pressure frame 4. During the extension of the top material rod assembly 82 into the pressure frame 4, the rubber scraper ring 821 on the top material rod will scrape off the plastic waste residue on the cutting blade of the pressure frame 4. After the electric push rod 3 telescopic rod is reset, the user can remove the processed part 2 and the cut waste, completing one processing cycle. In this way, the position of the processed part 2 can be corrected and fixed, and the cut edge of the processed part 2 can also be polished, thereby improving the processing efficiency of the processed part 2.

[0040] Example 2: Based on Example 1, such as Figures 10-14 As shown, it also includes an auxiliary mechanism. The outer shell 1 is provided with an auxiliary mechanism, which includes a lifting frame 91. The lifting frame 91 is slidably connected inside the outer shell 1. Support rod 1 95, support rod 2 96, support rod 3 97 and support rod 4 98 are slidably connected to the lifting frame 91. A return spring 2 99 is connected between the lifting frame 91 and support rod 1 95, support rod 2 96, support rod 3 97 and support rod 4 98. Two swing rods 92 are rotatably connected inside the outer shell 1. Torsion springs 93 are connected between the two swing rods 92 and the outer shell 1. The two swing rods 92 are engaged with the lifting frame 91. The pressure frame 4 is provided with two top rods 2 94. The two top rods 2 94 are slidably connected to the outer shell 1.

[0041] Locking holes are provided on support rod 1 (95), support rod 2 (96), support rod 3 (97), and support rod 4 (98).

[0042] The four cutting blades on the pressure frame 4 have the same shape as support rod 1 95, support rod 2 96, support rod 3 97 and support rod 4 98, respectively, but the cutting blades are larger.

[0043] It also includes a locking mechanism. The lifting frame 91 is equipped with a locking mechanism, which includes a locking frame 101. The locking frame 101 is slidably connected to the lifting frame 91. Several pressure springs 102 are connected between the locking frame 101 and the lifting frame 91. The pressure frame 4 is equipped with two top rods 103.

[0044] Initially, the locking frame 101 engages with the locking holes of support rod 1 95, support rod 2 96, support rod 3 97, and support rod 4 98. As the pressure frame 4 moves closer to the workpiece 2, it causes the top rod 3 103 and top rod 2 94 to move together. Support rod 1 95, support rod 2 96, support rod 3 97, and support rod 4 98 are fixed in place by the locking frame 101. During the movement of top rod 2 94, it compresses the swing rod 92, causing it to rotate. The torsion spring 93 is twisted, and the swing rod 92, during its swing, causes the lifting frame 91 to move closer to the workpiece 2. The movement of the lifting frame 91 then causes support rod 1 95, support rod 2 96, support rod 3 97, and support rod 4 98 to move together. The movement causes support rods 1 (95), 2 (96), 3 (97), and 4 (98) to contact the edge material to be cut at the processing hole of workpiece 2. Then, the top rod 2 (94) continues to move, and the pressure on the swing rod 92 no longer increases. Subsequently, the cutting blade on the pressure frame 4 cuts the workpiece 2. Because support rods 1 (95), 2 (96), 3 (97), and 4 (98) support the bottom of the edge material of workpiece 2, the cutting blade on the pressure frame 4 can better cut the burrs on workpiece 2, thereby improving the cutting quality of the burrs on workpiece 2. After the cutting blade on the pressure frame 4 has finished cutting the workpiece 2, the pressure frame 4 continues to move, and the top rod 3 (103) will press the locking frame 101. This causes the locking frame 101 to extend out of the lifting frame 91, compressing the pressure spring 102. The locking frame 101 then disengages from the locking holes of support rods 95, 96, 97, and 98, freeing them from restriction. As the cutting blade on the pressure frame 4 continues to move, it pushes support rods 95, 96, 97, and 98 into the lifting frame 91, compressing the return spring 99. Subsequently, the grinding head 75 contacts the cutting edge of the workpiece 2, and the electric push rod 3 stops moving. After processing, the pressure frame 4 resets, causing the top rods 94 and 103 to reset. The cutting blade on the pressure frame 4... The support rods 95, 96, 97, and 98 are disengaged. The return spring 299 resets, causing the support rods 95, 96, 97, and 98 to reset. The top rod 103 disengages from the locking frame 101. The pressure spring 2102 resets, causing the locking frame 101 to reset, so that the locking frame 101 re-engages into the locking holes of the support rods 95, 96, 97, and 98, thereby fixing the support rods 95, 96, 97, and 98. The top rod 294 resets and disengages from the swing rod 92. The torsion spring 93 resets, causing the swing rod 92 to reset. The swing rod 92 resets, causing the lifting frame 91 to reset.

[0045] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A post-processing device for blow-molded parts, characterized in that, It includes a housing (1), a placement slot on the housing (1), a workpiece (2) placed on the placement slot of the housing (1), an electric push rod (3) on the housing (1), a pressure frame (4) on the telescopic rod of the electric push rod (3), the pressure frame (4) and the housing (1) are slidably connected, a material frame (5) on the housing (1), and a fixing mechanism, a grinding mechanism and a material ejection mechanism on the housing (1).

2. The post-processing device for blow-molded parts according to claim 1, characterized in that, The pressure frame (4) is equipped with four different shaped cutting blades.

3. The post-processing device for blow-molded parts according to claim 1, characterized in that, The fixing mechanism includes guide rods (61), two guide rods (61) are provided on the pressure frame (4), two transmission rods (62) and two positioning blocks (63) are slidably connected on the outer shell (1), the transmission rods (62) and guide rods (61) are engaged, the positioning blocks (63) and transmission rods (62) are engaged, each of the two positioning blocks (63) is provided with a pressing rod (64), both pressing rods (64) are slidably connected to the outer shell (1), the outer shell (1) is slidably connected with a positioning block (65) and a positioning plate (66), one of the pressing rods (64) is engaged with the positioning block (65), and the other pressing rod (64) is engaged with the positioning plate (66).

4. The post-processing device for blow-molded parts according to claim 3, characterized in that, The grinding mechanism includes a sliding mounting bracket (71), four sliding mounting brackets (71) are rotatably connected to the pressure frame (4), each sliding mounting bracket (71) is slidably connected to a slider (72), each slider (72) is equipped with a grinding motor, each grinding motor (74) output shaft is equipped with a grinding head (75), a return spring (73) is connected between the slider (72) and the sliding mounting bracket (71), each slider (72) is equipped with a push rod (76), a rotating motor (77) is provided on the pressure frame (4), and a transmission assembly (78) is connected between the rotating motor (77) and the four sliding mounting brackets (71).

5. The post-processing apparatus for blow-molded parts according to claim 4, characterized in that, The pressure frame (4) has four guide grooves of different shapes. The shape of the guide groove of the pressure frame (4) is the same as the shape of the machining hole of the workpiece (2). The four push rods (76) are respectively inserted into the four guide grooves of the pressure frame (4).

6. The post-processing apparatus for blow-molded parts according to claim 3, characterized in that, The top material mechanism includes a lifting frame (81), a lifting frame (81) is slidably connected to the pressure frame (4), a pressure spring (83) is connected between the lifting frame (81) and the pressure frame (4), a top material rod assembly (82) is provided on the lifting frame (81), the top material rod assembly (82) includes four top material rods of different shapes, each of the four top material rods is provided with a rubber scraper ring (821), each of the four top material rods is slidably connected to the pressure frame (4), and four fixed pressure rods (84) are provided on the outer shell (1).

7. The post-processing apparatus for blow-molded parts according to claim 6, characterized in that, It also includes an auxiliary mechanism. The outer shell (1) is provided with an auxiliary mechanism, which includes a lifting frame (91). The lifting frame (91) is slidably connected inside the outer shell (1). Support rod 1 (95), support rod 2 (96), support rod 3 (97) and support rod 4 (98) are slidably connected on the lifting frame (91). A reset spring 2 (99) is connected between the lifting frame (91) and support rod 1 (95), support rod 2 (96), support rod 3 (97) and support rod 4 (98). Two swing rods (92) are rotatably connected inside the outer shell (1). Torsion springs (93) are connected between the two swing rods (92) and the outer shell (1). The two swing rods (92) are engaged with the lifting frame (91). Two top rods 2 (94) are provided on the pressure frame (4). The two top rods 2 (94) are slidably connected to the outer shell (1).

8. The post-processing apparatus for blow-molded parts according to claim 7, characterized in that, Lock holes are provided on support rod one (95), support rod two (96), support rod three (97) and support rod four (98).

9. A post-processing device for blow-molded parts according to claim 7, characterized in that, The four cutting blades on the pressure frame (4) are the same shape as support rod one (95), support rod two (96), support rod three (97) and support rod four (98), respectively, but the cutting blades are larger.

10. A post-processing apparatus for blow-molded parts according to claim 7, characterized in that, It also includes a locking mechanism. The lifting frame (91) is equipped with a locking mechanism, which includes a locking frame (101). The lifting frame (91) is slidably connected to the locking frame (101). Several pressure springs (102) are connected between the locking frame (101) and the lifting frame (91). Two top rods (103) are provided on the pressure frame (4).

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