Injection gate shearing device for automobile injection molding part trim

Abstract

The application discloses a kind of injection molding gate shearing equipment of automobile injection molding part trim, it is related to the technical field of injection molding waste recovery equipment, including equipment support, freezing structure and clamp, bottom plate is equipped on the equipment support, freezing structure is fixedly installed on bottom plate, clamp is fixedly installed on bottom plate;The equipment support includes bottom bracket and downholder;The freezing structure includes installation rod and jet rod;The clamp is arranged below jet rod;Bottom plate is equipped with blanking opening, the blanking opening is equipped with recovery tank below, the extrusion crushing structure is equipped in recovery tank;The extrusion crushing structure includes extrusion roller structure and side suction structure;The extrusion crushing structure is equipped with the structure of comminution knife below, and the structure of comminution knife includes comminution knife, the way that the frozen part of waste material after shearing is separated from unfrozen part can be completed gate shearing, crushing, recycling and the like multi-process integration.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of recycling equipment for injection molding waste, in particular to injection gate shearing equipment for automobile injection molding part trims. BACKGROUND

[0002] In the field of high-end automobile interiors, soft glue materials such as TPU and TPE are widely used in complex curved surface decoration parts due to their excellent touch and modeling adaptability. The freeze shearing technology (dry ice / liquid nitrogen) has become the mainstream gate removal scheme because it can avoid the problem of traditional process focus marks or burrs. However, the low-temperature characteristics of the freeze shearing technology cause the shearing surface to adsorb environmental moisture and form crystalline water, which significantly restricts the material recycling chain.

[0003] During the freeze shearing process, when the gate area is rapidly cooled to below -50 DEG C, the material surface contacts with the environmental moisture to form crystalline water. These crystalline waters exist in the form of physical adsorption or hydrogen bond at the fracture, which produces a chain reaction during subsequent crushing and recycling: first, the friction heat of the crusher causes the crystalline water to melt, which causes the soft glue to adhere to the broken material and form a block, reducing the uniformity of the particles; second, the water penetrates into the material to cause the hydrolysis and rupture of the TPU / TPE molecular chain, and the mechanical properties of the regenerated material are attenuated by more than 15%; in addition, the residual moisture vaporizes to form micropores during granulation, further deteriorating the quality of the regenerated particles.

[0004] To avoid the above risks, the current process requires hot air drying of the sheared parts for more than 12 hours, which forces the production line to operate in sections. More seriously, the detection of crystalline water relies on offline sampling, and when the drying is not thorough, the moisture mixed with the adhesive material of the broken material forms a "wet grinding effect", directly polluting the entire batch of regenerated material. SUMMARY

[0005] The purpose of the present application is to provide an injection gate shearing equipment for automobile injection molding part trims to solve the problems raised in the background.

[0006] To achieve the above purpose, the present application provides the following technical scheme: an injection gate shearing equipment for automobile injection molding part trims, comprising a device support, a freezing structure and a clamp, a bottom plate is arranged on the device support, the freezing structure is fixedly installed on the bottom plate, and the clamp is fixedly installed on the bottom plate.

[0007] The device support comprises a bottom frame and a pressing support, and the pressing support is arranged above the bottom frame.

[0008] The freezing structure comprises a mounting rod and a jet rod, the mounting rod is installed on the bottom plate, the jet rod is installed on the mounting rod, and a pressing switch is arranged at the top of the mounting rod.

[0009] The clamp is arranged below the jet rod.

[0010] The bottom plate is provided with a blanking hole, and a recycling box is arranged below the blanking hole.

[0011] The extrusion crushing structure comprises an extrusion roller structure and a side suction structure.

[0012] A crushing knife structure is arranged below the extrusion crushing structure, and the crushing knife structure comprises a crushing knife.

[0013] Preferably, the bottom frame comprises an electrical box and a support frame, and the electrical box is mounted on the top of the support frame.

[0014] Preferably, the lower pressing support comprises a pneumatic cylinder, a support column and a lower pressing plate, the pneumatic cylinder is mounted on the top plate, the support column is provided with four pieces of four-corner symmetrical mounting and is fixedly mounted on the bottom frame at the bottom, the top of the support column is fixedly connected to the top plate, and the lower pressing plate is mounted on the output shaft of the pneumatic cylinder.

[0015] Preferably, the inside of the mounting rod is provided with a frozen air flow pipe, and the frozen air flow pipe is communicated with the air jet rod.

[0016] Preferably, the lower surface of the air jet rod is provided with an air jet hole, and the position of the air jet hole corresponds to the position of the sprue of the decorative strip.

[0017] Preferably, the side of the blanking hole is provided with a baffle.

[0018] Preferably, the extrusion roller structure comprises an extrusion roller and an extrusion wall, both ends of the extrusion roller are rotatably mounted on the recycling box, the extrusion wall is fixedly mounted on the side wall of the recycling box, the extrusion roller is provided with extrusion teeth, and a crushing gap decreasing uniformly from top to bottom is arranged between the extrusion roller and the extrusion wall.

[0019] Preferably, the side suction structure comprises a suction box, a tumbling roller, an air flow pipe and a blocking door, the suction box is fixedly mounted in the recycling box, both ends of the tumbling roller are rotatably mounted in the suction box, the air flow pipe comprises two pipes and is connected in a drying chamber where the tumbling roller is arranged by penetrating through the recycling box, a blanking passage is arranged below the drying chamber, the blocking door is mounted below the blanking passage, the front end of the blocking door is rotatably mounted on the suction box, an electromagnet is arranged on the tail end of the blocking door, the electromagnet can be adsorbed on the suction box, and the end of the tumbling roller is provided with a motor two.

[0020] Preferably, the pulverizing knife structure further comprises a rotating shaft and a third motor, the pulverizing knives are arranged on the rotating shaft and connected to the third motor.

[0021] Preferably, the recycling box is provided with a filter screen below the pulverizing knife structure.

[0022] Compared with the prior art, the present application has the following advantages:

[0023] 1. The present application can realize frozen shearing at the gate position by shearing the gate with frozen air flow from the top, so that no residue is left at the gate, meeting the product requirements.

[0024] 2. The extrusion roller in the present application can extrude and crush the gate after being frozen and sheared, so that the waste material carrying ice crystals is separated from the soft rubber head due to crushing, and the crushed waste material is taken away by the side suction structure through suction air flow for separate drying, while the remaining head is not crushed due to being made of soft rubber material, so it cannot be taken away by the suction air flow, and thus falls into the lower part for further cutting and crushing.

[0025] 3. The pulverizing knife structure in the present application can cut and crush the remaining head, and mix the waste material dried of crystal water from the side suction structure with the waste material crushed by the pulverizing knife, so as to realize the integration of multiple processes such as gate shearing, crushing and recycling. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present application;

[0027] Figure 2 It is a top view of the present application;

[0028] Figure 3 It is Figure 2 the internal A-A section structure diagram;

[0029] Figure 4 It is Figure 2 the internal B-B section structure diagram;

[0030] Figure 5 It is Figure 4 the internal C structure enlarged view;

[0031] Figure 6 It is a fixture, a bottom plate and a freezing structure schematic diagram;

[0032] Figure 7 It is an extrusion crushing structure and a pulverizing knife structure schematic diagram.

[0033] In the figure: 1-equipment support; 11-bottom bracket; 111-electric box, 112-support frame; 12-pressing support; 121-cylinder, 122-support column, 123-pressing plate, 124-top plate;

[0034] 2-freezing structure; 21-mounting rod; 22-jet rod; 23-pressing switch;

[0035] 3-clamp;

[0036] 4-bottom plate; 41-discharge port; 411-baffle;

[0037] 5-extrusion crushing structure; 51-extrusion roller structure; 511-extrusion roller, 512-extrusion wall, 513-extrusion tooth, 515-motor one; 52-side suction structure; 521-suction box, 522-tumbling rabbler, 523-air flow pipe, 524-block door, 525-motor two;

[0038] 6-pulverizing knife structure; 61-pulverizing knife; 62-rotation shaft; 63-motor three;

[0039] 7-recovery box. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] Please refer to Figures 1 to 7 The present application provides a technical solution: an injection gate shearing device for automobile injection molding part trim, comprising an equipment support 1, a freezing structure 2 and a clamp 3, the equipment support 1 is provided with a bottom plate 4, the freezing structure 2 is fixedly installed on the bottom plate 4, and the clamp 3 is fixedly installed on the bottom plate 4.

[0042] The equipment support 1 comprises a bottom bracket 11 and a pressing support 12, and the pressing support 12 is arranged above the bottom bracket 11.

[0043] The freezing structure 2 comprises a mounting rod 21 and a jet rod 22, the mounting rod 21 is installed on the bottom plate 4, the jet rod 22 is installed on the mounting rod 21, and the top of the mounting rod 21 is provided with a pressing switch 23.

[0044] The clamp 3 is arranged below the jet rod 22.

[0045] The bottom plate 4 is provided with a falling port 41, and a recycling box 7 is arranged below the falling port 41, and the recycling box 7 is provided with an extrusion crushing structure 5.

[0046] The extrusion crushing structure 5 comprises an extrusion roller structure 51 and a side suction structure 52, the extrusion roller structure 51 crushes the sprue waste through extrusion, and the side suction structure 52 recycles and dries the crushed waste through suction.

[0047] The extrusion crushing structure 5 is provided with a crushing knife structure 6 below, and the crushing knife structure 6 comprises a crushing knife 61 for cutting and crushing the waste.

[0048] In the embodiment, the bottom frame 11 comprises an electrical box 111 and a support frame 112, the electrical box 111 is installed on the top of the support frame 112, and the electrical box 111 is used to provide power for the whole device.

[0049] In the embodiment, the lower pressing support 12 comprises a pneumatic cylinder 121, a support column 122 and a lower pressing plate 123, the pneumatic cylinder 121 is installed on the top plate 124, the support column 122 is provided with four pieces of four-angle symmetrical installation and is fixedly installed at the bottom of the bottom frame 11, the top of the support column 122 is fixedly connected to the top plate 124, the lower pressing plate 123 is installed on the output shaft of the pneumatic cylinder 121, the lower pressing plate 123 is used to install the cutter for shearing the sprue, the pneumatic cylinder 121 drives the lower pressing plate 123 and the cutter on the lower pressing plate 123 to shear the sprue, and the lower pressing plate 123 is used to press the pressing switch 23.

[0050] In the embodiment, the inside of the mounting rod 21 is provided with a frozen air flow pipe, the frozen air flow pipe is communicated with the air jet rod 22, and the frozen air flow is jetted out to the sprue position of the decorative strip through the air jet rod 22.

[0051] In the embodiment, the lower surface of the air jet rod 22 is provided with an air jet hole, the position of the air jet hole corresponds to the sprue position of the decorative strip, so as to facilitate the freezing of the sprue position and the subsequent shearing.

[0052] In the embodiment, the side of the falling port 41 is provided with a baffle 411, and the baffle is used to guide the sheared waste to fall into the recycling box 7.

[0053] In the embodiment, the extrusion roller structure 51 comprises an extrusion roller 511 and an extrusion wall 512. The two ends of the extrusion roller 511 are rotatably mounted on the recycling box 7. The extrusion wall 512 is fixedly mounted on the side wall of the recycling box 7. The extrusion roller 511 is provided with extrusion teeth 513. The extrusion roller 511 and the extrusion wall 512 are provided with a crushing gap which decreases uniformly from top to bottom. The end of the extrusion roller 511 is provided with a motor 515. The extrusion roller 511 separates the frozen and brittle sprue of the falling waste from the soft rubber head by rotating the crushing gap.

[0054] In the embodiment, the side suction structure 52 comprises a suction box 521, a tumbling roller 522, airflow ducts 523 and a blocking door 524. The suction box 521 is fixedly mounted in the recycling box 7. The two ends of the tumbling roller 522 are rotatably mounted in the suction box 521. The airflow ducts 523 comprise two airflow ducts which are connected in the drying chamber of the tumbling roller 522 and pass through the recycling box 7. The drying chamber is provided with a falling channel below. The blocking door 524 is mounted below the falling channel. The front end of the blocking door 524 is rotatably mounted on the suction box 521. The tail end of the blocking door 524 is provided with an electromagnet which can be adsorbed on the suction box 521. The end of the tumbling roller 522 is provided with a motor 525. When the pressing switch 23 is triggered by the lower pressing plate 123, the airflow ducts 523 suck outward to generate suction force at the suction port of the suction box 521 to suck the crushed waste of the extrusion roller 511 into the drying chamber. When the pressing switch 23 is not triggered, the two airflow ducts 523 work separately. One airflow duct is connected with the drying hot airflow and the other airflow duct sucks the hot airflow outward. The hot airflow carries away the water. At the same time, the electromagnet of the blocking door 524 is de-energized after a certain drying time. The blocking door 524 is opened under the action of gravity. The dried waste enters the position of the crushing knife structure 6 to be mixed with the crushed material head.

[0055] In the embodiment, the crushing knife structure 6 further comprises a rotating shaft 62 and a motor 63. The crushing knives 61 are uniformly arranged on the rotating shaft 62. The end of the rotating shaft 62 is connected with the motor 63. The falling material head is crushed by the crushing knives 61.

[0056] In the embodiment, the recycling box 7 is provided with a filter screen below the crushing knife structure 6. The filter screen can help to screen the substandard waste.

[0057] Working principle: in use, first, the decoration strip is clamped through the clamp 3, the clamp 3 is set according to the structure of the decoration strip, then the frozen gas flow is sprayed to the sprue through the air jet rod 22, the sprue is quickly frozen and brittle, the cutting tool is convenient to cut, then the waste after cutting will first fall into the extrusion roller structure (51), the extrusion roller 511 is broken through the rotating fit gap, the waste that has been frozen and brittle in the waste falling into the sprue position is extruded and broken, and the soft rubber material head connected with it is separated, so that the waste with crystal water or ice crystals is separated from the soft rubber material head, then when the waste moves to the discharge port, the small volume of the waste after crushing will be sucked into the drying chamber through the suction of the suction port of the suction box 521 by the suction force generated by the air flow pipeline 523, when the press switch 23 is not triggered, the two air flow pipelines 523 work separately, one is connected with the dry hot air flow, and the other is connected with the external suction hot air flow, the hot air flow will take away the moisture, at the same time, the electromagnet of the blocking door 524 will be de-energized after a certain time of drying, the blocking door 524 is opened under the action of gravity, the dried waste enters the position where the crushing knife structure 6 is located and waits to be mixed with the crushed material head, finally the remaining waste is crushed by the crushing knife and collected into the recycling box 7.

[0058] From the common technical knowledge, the application can be realized by other embodiments without departing from the spirit or essential characteristics. Therefore, the above disclosed embodiments are only examples and are not the only ones. All changes within the scope of the application or within the scope equivalent to the application are included in the application.

Claims

1. An injection molding gate shear apparatus for an automotive injection molded trim piece, characterized by: It includes an equipment bracket (1), a freezing structure (2) and a clamp (3). The equipment bracket (1) is provided with a base plate (4). The freezing structure (2) is fixedly installed on the base plate (41). The clamp (3) is fixedly installed on the base plate (4). The equipment support (1) includes a base frame (11) and a pressure bracket (12), the pressure bracket (12) being disposed above the base frame (11); The freezing structure (2) includes a mounting rod (21) and an air jet rod (22). The mounting rod (21) is mounted on the base plate (4), and the air jet rod (22) is mounted on the mounting rod (21). A push switch (23) is provided on the top of the mounting rod (21). The clamp (3) is positioned below the jet rod (22); The bottom plate (4) is provided with a discharge port (41), and a recycling box (7) is provided below the discharge port (41). The recycling box (7) is provided with a crushing and extrusion structure (5). The extrusion crushing structure (5) includes an extrusion roller structure (51) and a side suction structure (52). The extrusion roller structure (51) crushes the gate waste by extrusion, and the side suction structure (52) recovers and dries the crushed waste by suction. The crushing structure (5) is provided with a crushing blade structure (6) below it. The crushing blade structure (6) includes a crushing blade (61) for cutting and crushing waste materials.

2. A device for cutting off the gate of an injection molding of an automobile trim part according to claim 1, characterized in that: The base frame (11) includes an electrical box (111) and a support frame (112), with the electrical box (111) mounted on top of the support frame (112).

3. A device for cutting off the gate of an injection molding of an automotive trim part according to claim 2, characterized in that: The pressure bracket (12) includes a cylinder (121), a support column (122), and a pressure plate (123). The cylinder (121) is mounted on the top plate (124). The support column (122) has four pieces symmetrically installed at the four corners and its bottom is fixedly mounted on the base frame (11). The top of the support column (122) is fixedly connected to the top plate (124). The pressure plate (123) is mounted on the output shaft of the cylinder (121) and is used to install the cutting tool for shearing the gate.

4. The injection molding gate shearing apparatus for an automotive injection molded trim of claim 1, wherein: The mounting rod (21) has a refrigeration airflow pipe inside, which is connected to the jet rod (22).

5. An injection molding gate shearing apparatus for an automotive injection molded trim part as defined in claim 4, wherein: The lower surface of the jet rod (22) is provided with jet holes, and the position of the jet holes corresponds to the position of the gate of the trim strip.

6. A sprue shearing apparatus for an automotive injection molded trim part according to claim 1, wherein: The side of the discharge port (41) is provided with a baffle (411).

7. An injection molding gate shearing apparatus for an automotive injection molded trim part as defined in claim 6, wherein: The extrusion roller structure (51) includes an extrusion roller (511) and an extrusion wall (512). The two ends of the extrusion roller (511) are rotatably mounted on the recycling box (7). The extrusion wall (512) is fixedly mounted on the side wall of the recycling box (7). The extrusion roller (511) is provided with extrusion teeth (513). There is a crushing gap (524) between the extrusion roller (511) and the extrusion wall (512) that decreases uniformly from top to bottom. The end of the extrusion roller (511) is provided with a motor (515).

8. The injection molding gate shearing apparatus for an automotive injection molded trim of claim 1, wherein: The side suction structure (52) comprises a suction box (521), a tumbling stirring wheel (522), airflow ducts (523) and a blocking door (524), the suction box (521) is fixedly installed in the recycling box (7), both ends of the tumbling stirring wheel (522) are rotatably installed in the suction box (521), the airflow ducts (523) comprise two and are both connected in the dry chamber where the tumbling stirring wheel (522) is located and pass through the recycling box (7), a material falling channel is arranged below the dry chamber, the blocking door (524) is installed below the material falling channel, the front end of the blocking door (524) is rotatably installed on the suction box (521), an electromagnet is arranged on the tail end of the blocking door (524), the electromagnet can be adsorbed on the suction box (521), and the end of the tumbling stirring wheel (522) is provided with a motor two (525).

9. The injection molding gate shearing apparatus for an automotive injection molded trim of claim 1, wherein: The crushing knife structure (6) further comprises a rotating shaft (62) and a motor three (63), the crushing knives (61) comprise a plurality of pieces and are uniformly arranged on the rotating shaft (62), and the end of the rotating shaft (62) is connected to the motor three (63).

10. The injection molding gate shearing apparatus for an automotive injection molded trim of claim 1, wherein: A filter screen is arranged in the recycling box (7), and the filter screen is located below the crushing knife structure (6).

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