A processing machine for molding tire tread in one go

Abstract

The present invention relates to the technical field of tire tread manufacturing, and in particular to a processing machine for one-time molding of tire treads; the machine comprises a metering injection unit installed above a mobile device, the metering injection unit comprises a plasticizing unit and an injection unit, the two are connected together to inject semi-solid rubber materials into a vulcanization molding main machine in front, the vulcanization molding main machine is equipped with a mold shifting device, a mobile boosting mechanism, a safety lock mechanism and a movable mold plate that can move up and down, so as to realize one-time molding of the tire tread. The present invention improves the automation degree of tire tread molding, while ensuring the safety of operators, and has broad market prospects.

Description

Technical Field

[0001] The invention relates to the technical field of tire tread manufacturing, in particular to a processing machine for molding tire treads in one go. Background Art

[0002] A tire is made up of three main layers: the tread, the bead and the rim. The final shaping of the tire is done by a hot press that vulcanizes the rubber, transforming it from a fragile, sticky substance into a resilient structure. Different parts of the tire are made using different formulas. In either case, the synthetic rubber is passed through a roller pressing machine to press them into rubber sheets for further processing, and the same is true for the tread.

[0003] At present, the manufacturing process of tire treads is generally as follows: the raw materials are pressurized and heated by a large flat vulcanizer, vulcanized into strip-shaped semi-finished products, and then they need to be manually bonded using adhesives. In this process, the raw materials need to be weighed manually in the early stage, and then the weighed raw materials are added to the vulcanizer. The strip-shaped semi-finished products vulcanized by the vulcanizer are then manually bonded. Too much manual participation makes it difficult to control the quality; the cumbersome process also leads to low product production efficiency; the manual use of adhesives also directly affects the performance and various parameter indicators of the product, and the toughness and strength of the bonding part cannot catch up with the rest of the one-time molding.

[0004] Therefore, there is an urgent need for a tire automation machine that can reduce manual participation and manufacture a molded ring-shaped tire tread in one go, thereby improving the tread toughness, strength and wear resistance. Summary of the invention

[0005] In order to make up for the deficiencies in the prior art and achieve the above functions, the present invention provides an injection molding machine for manufacturing a ring-shaped tire tread.

[0006] The present invention is achieved through the following technical solutions:

[0007] A processing machine for molding tire treads in one go, comprising a metering injection unit and a vulcanization molding main machine, wherein the metering injection unit comprises a plasticizing unit and an injection unit mounted on a mobile device; the vulcanization molding main machine comprises four guide columns mounted on a main machine base, a lower template is mounted on the main machine base, a mold shifting device is arranged above the lower template, a movable template is arranged above the mold shifting device, a flow divider is arranged below the movable template and a glue injection port is arranged on the rear end surface of the flow divider, a flow channel is arranged inside the flow divider, and the lower template, the mold shifting device and the movable template are all penetrated by four guide columns;

[0008] An upper template is fixed on the top of the guide column, and a mold opening and closing oil cylinder installed on the upper template is connected to the top of the movable template through a connecting flange, and the mold opening and closing oil cylinder controls the up and down movement of the movable template;

[0009] A mobile boosting mechanism is provided at the bottom of the upper template, and the mobile boosting mechanism includes an in-and-out oil cylinder fixed to the bottom of the upper template through an inverted hanging bracket, and the connecting rod of the in-and-out oil cylinder is connected to the boosting master cylinder installed in an inverted position at the rear through a fixed joint, and the boosting master cylinder is fixed on the cylinder slide rail at the bottom of the upper template;

[0010] A safety lock mechanism is also provided at the bottom of the upper template, and the safety lock mechanism includes a lock frame fixed to the bottom of the upper template and a locking cylinder horizontally installed on the lock frame, and a buckle that can match the lock port on the lock frame is provided on the upper end surface of the movable template.

[0011] Furthermore, the plasticizing unit includes a plasticizing motor, which is connected to a bearing seat in front of it, and a coupling in the bearing seat connects the rotating shaft on the rear plasticizing motor with the front plasticizing barrel, a heating oil tank is installed at the front end of the bearing seat, and the bearing seat and the heating oil tank are sealed, a plasticizing barrel is provided at the front end of the heating oil tank, and the heating oil tank and the plasticizing barrel are sealed, a screw is installed in the plasticizing barrel, the interior of the screw is hollow, the tail of the screw is located in the inner cavity of the heating oil tank, and an oil inlet and an oil outlet are provided on the rod wall, the inner cavity of the heating oil tank contains heat transfer oil, and the heat transfer oil circulates inside the screw and the heating oil tank; a hollow conical plunger head is installed at the front end of the plasticizing barrel, and a feed inlet is also provided at the rear half of the plasticizing barrel, and a material cavity is formed between the screw and the inner wall of the plasticizing barrel, and the material cavity is connected to the outside through the plunger head.

[0012] Furthermore, the injection unit comprises four injection cylinders connected to the injection barrel through injection cylinder seats, a connecting seat is fixed to the end of the piston rod behind the four injection cylinders, and the center of the connecting seat is connected to the bearing seat;

[0013] The front end of the injection barrel is provided with an injection nozzle connected to the injection port on the movable mold plate, the plunger head in the plasticizing unit is fixed in the inner cavity of the injection barrel, and the injection cylinder drives the plunger head and the plasticizing barrel to move in the injection barrel through the extension and contraction of the piston rod.

[0014] Furthermore, the moving device includes a linear slide rail installed on the base, a slide plate is installed on the linear slide rail, an arc-shaped support is arranged above the slide plate, the injection unit is fixed on the support, and a translation servo drive device is also installed on the base, and the translation servo drive device can control the movement of the slide plate by connecting to the bottom of the slide plate 304.

[0015] Further, the mold shifting device includes a pair of bilateral hanging beams and four mold shifting sleeves installed on the two hanging beams. The mold shifting device is sleeved on the guide column through the four mold shifting sleeves. A mold tray is arranged on the inner side of the hanging beam. A transmission gear is arranged at the lower position of the front end of the hanging beam. The mold tray is slidably connected to the inner side of the hanging beam through mold shifting slide rails fixed on both sides thereof. A rack is installed below the mold shifting slide rail. The rack is meshed with the transmission gear at the front end. A reducer and a motor are fixed on the side of the transmission gear.

[0016] Two suspension rods are installed on each suspension beam, and a limiting cylinder is installed on the top of the suspension rod. The suspension rod passes through the movable template, and the maximum rising height of the movable template is limited by the limiting cylinder.

[0017] Furthermore, the inlet and outlet oil cylinders control the forward and backward movement of the boost master cylinder, the boost master cylinder can extend the master cylinder piston, the upper end of the movable template is equipped with a pad and a pad mounting seat, a pressure sensor is installed inside the pad mounting seat, and the boost master cylinder applies a downward pressure above the pad and the movable template through the master cylinder piston.

[0018] Furthermore, a latch is installed on the piston rod of the locking oil cylinder. When the movable platen rises until the latch enters the lock opening, the locking oil cylinder can push the latch through the lock frame and the latch, so that the movable platen cannot move up and down.

[0019] A plurality of locking cylinders are installed at the front end of the injection unit, and the locking cylinders connect the injection unit to the vulcanization molding main machine through cylinder locks arranged in front of the locking cylinders.

[0020] Furthermore, all electrical components in the metering injection unit are controlled by the metering injection electric control box, and all electrical components on the vulcanization molding host are controlled by the host electric control box.

[0021] Furthermore, the flow channel is connected with the glue injection port and several glue injection nozzles installed at the bottom of the diverter plate. The flow channel inside the diverter plate is divided into a main flow channel for glue inlet and diverter channels for diverting glue in all directions at the same time. The main flow channel and each diverter channel converge at the center of the diverter plate. The ends of each diverter channel are closed, and the bottom of the diverter channel is connected with several glue injection nozzles.

[0022] The beneficial effects of the present invention are as follows: (1) The mold of the tire tread can be formed into the tire tread in one go using the device, without the need for conventional manual bonding and splicing. (2) The metering injection unit of the present invention in the processing and molding process can accurately control the amount of rubber material, and can realize plasticization, injection, and molding, with multiple processes being carried out simultaneously to improve production efficiency. (3) The mold transfer device provided in the present invention can facilitate the operator to take the material, and is also designed with a safety lock mechanism to physically prevent falling and ensure the safety of the operation. (4) The booster mechanism and locking cylinder designed in the present invention can ensure the compaction of the mold to prevent the occurrence of rubber leakage and the like. (5) The logical action of the present invention is clear, and only the electronic control system needs to be manually controlled or the electronic control program needs to be set in the entire process, which greatly reduces the degree of manual participation, improves safety, and also improves the intelligence level of the one-time molding of the tread. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a side structural schematic diagram of the present invention;

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of the vulcanization molding main machine of the present invention;

[0025] Figure 3 It is a schematic diagram of the side structure of the mold shifting device of the present invention;

[0026] Figure 4 It is a side cross-sectional schematic diagram of the safety lock mechanism of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the mobile boosting mechanism of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the mobile boosting mechanism of the present invention in a boosting state;

[0029] Figure 7 It is a structural schematic diagram of the mobile device of the present invention;

[0030] Figure 8 It is a side cross-sectional schematic diagram of the plasticizing unit of the present invention;

[0031] Fig. 9 It is a side cross-sectional schematic diagram of the injection unit of the present invention;

[0032] Fig.10 Schematic diagram of the internal structure of the diverter plate of the present invention.

[0033] In the figure,

[0034] 1. Metering injection unit, 101. Metering injection electric control box, 2. Vulcanization molding host, 201. Guide column, 202. Host base, 203. Host electric control box, 3. Moving device, 301. Linear slide rail, 302. Translation servo drive device, 303. Base, 304. Slide plate, 305. Support;

[0035] 4. Plasticizing unit, 401. plunger head, 402. plasticizing barrel, 403. screw, 404. feed port, 405. heating oil tank, 406. bearing seat, 407. plasticizing motor;

[0036] 5. Injection unit, 501. Injection nozzle, 502. Injection barrel, 503. Injection cylinder seat, 504. Injection cylinder, 505. Piston rod, 506. Connecting seat, 6. Locking cylinder, 601. Cylinder lock;

[0037] 7. Lower template, 8. Die shifting device, 801. Hanging rod, 802. Hanging beam, 803. Die shifting sleeve, 804. Die shifting slide rail, 805. Rack, 806. Die tray, 807. Transmission gear, 808. Limiting cylinder;

[0038] 9. Moving template, 901. Glue injection nozzle, 902. Diverter plate, 903. Main channel, 904. Diverter channel;

[0039] 10. Mobile booster mechanism, 1001. Inverted suspension bracket, 1002. Oil cylinder in and out, 1003. Oil cylinder slide rail, 1004. Fixed joint, 1005. Boosting main cylinder, 1006. Cushion block, 1007. Cushion block mounting seat;

[0040] 11. Upper template, 1101. Opening and closing mold cylinder, 1102. Connecting flange, 12. Safety lock mechanism, 1201. Locking cylinder, 1202. Latch, 1203. Lock frame, 1204. Buckle. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0043] The tire tread mold used is divided into three parts: upper, middle and lower molds. In the present invention, their respective layout positions are as follows: the lower mold of the tire tread mold is fixed on the lower mold plate 7, the middle mold of the tire tread mold is fixed on the mold moving device 8, and the upper mold of the tire tread mold is fixed on the bottom of the movable mold plate 9; 30 heating tubes for heating and 6 thermal resistors PT100 for temperature measurement are evenly distributed in the middle mold of the tire tread mold, and the temperature of the rubber in the middle mold of the tire tread mold can be controlled by the temperature controller SCR controller to reach the vulcanization temperature of the tire rubber tread.

[0044] like Figures 1 to 10 As shown, the present invention comprises a metering injection unit 1 and a vulcanization molding main machine 2, wherein the metering injection unit 1 comprises a plasticizing unit 4 and an injection unit 5 mounted on a mobile device 3, wherein the plasticizing unit 4 is used to heat and plasticize the rubber material into a semi-solid state, and the injection unit 5 is used to inject the semi-solid rubber with high fluidity into a diverter plate 902 at the bottom of a moving mold plate 9, and the rubber is uniformly injected into the middle mold of the tire tread mold through six injection nozzles 901 at the bottom of the diverter plate 902;

[0045] like Figure 1 and Figure 8 As shown, the plasticizing unit 4 includes a plasticizing motor 407, which is connected to a bearing seat 406 in front of the plasticizing motor 407. The coupling in the bearing seat 406 connects the rotating shaft on the rear plasticizing motor 407 with the front screw 403. A heating oil tank 405 is installed at the front end of the bearing seat 406. The heating oil tank 405 here only serves as a medium for heat preservation, and the device for heating and ensuring the circulation of the internal heat transfer oil is installed beside the heating oil tank 405 and is connected to the heating oil tank 405. This is a prior art and will not be repeated here. The bearing seat 406 and the heating oil tank 405 are sealed to ensure that the heat transfer oil does not flow into the bearing seat 406. A plasticizing barrel 402 is arranged at the front end of the heating oil tank 405. The heating oil tank 405 and the plasticizing barrel 402 are connected to each other. 2 are sealed, a screw 403 is installed in the plasticizing barrel 402, the interior of the screw 403 is hollow for the circulation of heat transfer oil, the tail is located in the inner cavity of the heating oil tank 405, and an oil inlet and an oil outlet are arranged on the rod wall, the heat transfer oil circulates in the screw 403 and the heating oil tank 405, and the solid rubber put in is preheated, so that the rubber material has strong fluidity; a hollow conical plunger head 401 is installed at the front end of the plasticizing barrel 402, and a feed port 404 is also arranged at the rear half of the plasticizing barrel 402, a material cavity is formed between the screw 403 and the inner wall of the plasticizing barrel 402, and the material cavity is connected to the outside through the plunger head 401, and the rubber material is heated and plasticized in the material cavity and injected to the next step.

[0046] like Figure 1 and Fig. 9As shown, the injection unit 5 is installed on the moving device 3, and the injection unit 5 includes four injection cylinders 504 connected to the injection barrel 502 through the injection cylinder seat 503, and a connecting seat 506 is fixed to the end of the piston rod 505 behind the four injection cylinders 504, and the center of the connecting seat 506 is connected to the bearing seat 406, so that when the piston rod 505 moves forward and backward, it drives the plasticizing unit 4 to move together;

[0047] The front end of the injection barrel 502 is provided with an injection nozzle 501 connected to the injection port on the movable mold plate 9. The plunger head 401 in the plasticizing unit 4 is fixed in the inner cavity of the injection barrel 502. The injection cylinder 504 drives the plunger head 401 and the plasticizing barrel 402 to move in the injection barrel 502 through the extension and retraction of the piston rod 505.

[0048] like Figure 1 and Figure 2 As shown, the vulcanization molding main machine 2 includes four guide columns 201 installed on the main machine base 202, which play the role of supporting and fixing the upper template. The lower template 7 is installed on the main machine base 202. A mold shifting device 8 is arranged above the lower template 7. A movable template 9 is arranged above the mold shifting device 8. The lower template 7, the mold shifting device 8, and the movable template 9 are all penetrated by the four guide columns 201.

[0049] An upper mold plate 11 is fixed on the top of the guide column 201 . A mold opening and closing cylinder 1101 installed on the upper mold plate 11 is connected to the top of the movable mold plate 9 via a connecting flange 1102 . The mold opening and closing cylinder 1101 can control the up and down movement of the movable mold plate 9 .

[0050] like Figure 1 , Figure 2 , Figure 5 , Figure 6 As shown, a mobile boosting mechanism 10 is provided at the bottom of the upper template 11, and the mobile boosting mechanism 10 includes an inlet and outlet cylinder 1002 fixed to the bottom of the upper template 11 through an inverted hanging bracket 1001, and the connecting rod of the inlet and outlet cylinder 1002 is connected to the boosting main cylinder 1005 installed in an inverted position at the rear through a fixed joint 1004, and the boosting main cylinder 1005 is fixed on the cylinder slide rail 1003 at the bottom of the upper template 11.

[0051] The in-and-out oil cylinder 1002 controls the forward and backward movement of the booster master cylinder 1005. The booster master cylinder 1005 extends out of the master cylinder piston, and a cushion block 1006 is installed at the end. The booster master cylinder 1005 applies a downward pressure on the top of the moving template through the master cylinder piston via the cushion block 1006.

[0052] like Figure 4As shown, a safety lock mechanism 12 is also provided at the bottom of the upper template 11, and the safety lock mechanism 12 includes a lock frame 1203 fixed to the bottom of the upper template 11 and a locking cylinder 1201 horizontally installed on the lock frame 1203, and a buckle 1204 that can match the lock mouth on the lock frame 1203 is provided on the upper end surface of the movable template 9; a latch 1202 is installed on the piston rod of the locking cylinder 1201, and when the movable template 9 rises until the buckle 1204 enters the lock mouth, the locking cylinder 1201 can push the latch 1202 through the lock frame 1203 and the lock mouth, so that the movable template 9 cannot move up and down, so as to avoid the disorder of the electric control logic causing a safety accident, and a plurality of locking cylinders 6 are installed at the front end of the injection unit 5, and the locking cylinder 6 connects the injection unit 5 with the vulcanization molding host 2 through the cylinder lock 601 arranged in front of it.

[0053] like Figure 1 and Figure 7 As shown, the moving device 3 includes a linear slide rail 301 installed on a base 303 , a slide plate 304 is installed on the linear slide rail 301 , an arc-shaped support 305 is arranged above the slide plate 304 , and the injection unit 5 is fixed on the support 305 .

[0054] like Figure 1 , Figure 2 and Figure 3 As shown, the mold shifting device 8 includes a pair of bilateral hanging beams 802 and four mold shifting sleeves 803 installed on the two hanging beams 802. The mold shifting device 8 is sleeved on the corresponding height of the guide column 201 through the four mold shifting sleeves 803. A mold tray 806 is arranged on the inner side of the hanging beam 802. A transmission gear 807 is arranged at the lower position of the front end of the hanging beam 802. The mold tray 806 is slidably connected to the inner side of the hanging beam 802 through mold shifting slide rails 804 fixed on both sides thereof. A rack 805 is installed below the mold shifting slide rail 804. The rack 805 is meshed with the transmission gear 807 at the front end. A reducer and a motor are fixed on the side of the transmission gear 807.

[0055] Two suspension rods 801 are installed on each suspension beam 802 and a limiting cylinder 808 is installed on the top of the suspension rod 801. The suspension rod 801 passes through the movable template 9. Since the diameter of the limiting cylinder 808 is larger than that of the suspension rod 801, the maximum rising height of the movable template 9 can be limited by the limiting cylinder 808.

[0056] All electrical components in the metering injection unit 1 are controlled by the injection electric control box 101 , and all electrical components on the vulcanization molding main machine 2 are controlled by the main machine electric control box 203 .

[0057] An electronic ruler is installed on the upper template 11, and the detection head of the electronic ruler is installed on the movable template 9; when the mold is opened and closed, the movable template 9 drives the electronic ruler to extend and retract, and feeds back the real-time position signal to the control system in the main engine electronic control box 203; the metering injection unit 1 is also equipped with an electronic ruler, and the extension and retraction of the injection cylinder 504 can accurately control the metering of the rubber material in the plasticizing unit 4: when adding material and plasticizing, the screw 403 drives the material into the injection barrel 502, and the material in the injection barrel 502 pushes the injection unit 5 to move in the opposite direction, thereby stretching the electronic ruler; when the injection unit 5 performs injection, the injection unit 5 squeezes the material out of the injection barrel 502, and the electronic ruler contracts; the opening and closing mold cylinder 1101 is also equipped with an electronic ruler, and the position signal fed back by the opening and closing mold electronic ruler controls the downward movement of the movable template 9.

[0058] A diverter plate 902 is installed below the movable template 9, and a glue inlet is set at the rear of the diverter plate 902, so that the rubber material can enter the diverter plate 902 through the glue inlet from the injection nozzle 501. There is a flow channel inside the diverter plate 902 for the rubber material to flow; a plurality of glue injection nozzles 901 are installed at the bottom of the diverter plate 902, so that the rubber material can completely enter the tire tread mold through the flow channel of the diverter plate 902, avoiding the phenomenon of "glue leakage", "glue running" and uneven injection.

[0059] like Fig.10 As shown, the flow channel is connected with the glue inlet and several glue injection nozzles 901 installed at the bottom of the diverter plate 902. The flow channel inside the diverter plate 902 is divided into a main flow channel 903 for glue inlet and diverter channels 904 for diverting in all directions at the same time. The main flow channel 903 and each diverter channel 904 converge at the center of the diverter plate 902. The ends of each diverter channel 904 are closed, and the bottom of the diverter channel 904 is connected with several glue injection nozzles 901; that is, the rubber material is dispersed into each diverter channel 904 in the center of the flow channel. Since the distance between the glue injection nozzle 901 and the center of the flow channel is equal, the rubber material can be injected at the same time.

[0060] The working principle and operation steps of the present invention are:

[0061] (1) Plasticization: The rubber material is added into the plasticization unit 4 through the feed port 404, and driven by the screw 403, enters the injection barrel 502 (during which the solid rubber material is heated and plasticized into a semi-solid state). The amount of the rubber material is measured by an electronic ruler. When the volume of the rubber material in the injection barrel 502 reaches the required amount, the plasticization process stops.

[0062] (2) Mold moving action: Control the transmission gear 807 to rotate and drive the mold tray 806 to move. Through the movement of the mold moving device 8, the middle mold of the tire tread mold is moved into the specified position. At this time, the middle mold and the lower mold of the tire tread mold are meshed with each other, and the proximity switches installed around them are limited;

[0063] (3) Safety lock is opened: the locking cylinder 1201 is retracted, the latch 1202 is opened, and the surrounding proximity switches are controlled in place;

[0064] (4) Mold closing: The mold opening and closing cylinder 1101 controls the movable mold plate 9 to move downward. When the movable mold plate 9 is at a certain distance from the mold moving device 8, the upper mold and the middle mold are closed;

[0065] (5) Move the master cylinder: After the booster master cylinder 1005 is moved to the specified position (controlled by the proximity switch installed around it), the master cylinder piston of the booster master cylinder 1005 starts to move, pressing the mold of the tire tread. After the pressing pressure reaches the set pressure (through the feedback signal of the pressure sensor in the pad 1006), it stops;

[0066] (6) Mobile injection: The injection unit 5 accurately controls the moving distance through the translation servo drive device 302 on the moving device 3, so that the injection nozzle 501 of the injection unit 5 is accurately aligned with the glue inlet on the back of the moving mold plate 9; while moving, it is locked with the vulcanization molding main machine 2 in front through the cylinder lock 601;

[0067] (7) Locking: The locking cylinder 6 is extended and retracted to tightly fit the injection nozzle 501 of the injection unit 5 and the glue inlet of the movable mold plate 9 (the position is controlled by the proximity switch) to prevent glue from leaking.

[0068] (8) Injection: The injection cylinder 504 in the injection unit 5 moves to inject the rubber material from the injection barrel 502 into the tire tread mold through the flow channel of the diverter plate 902 under the movable mold plate 9. The amount of rubber injected is accurately controlled by the electronic ruler installed on the metering injection unit 1;

[0069] (9) Vulcanization: After the rubber material is heated and pressurized in the tire tread mold for a certain period of time, vulcanization is completed;

[0070] Note: To improve production efficiency, during the vulcanization process, the lock release, removal of the injection unit 5, and re-plasticization can be performed simultaneously; lock release: through the reverse action of the lock cylinder 6, the injection nozzle 501 of the injection unit 5 and the glue inlet of the movable template 9 are separated to a certain distance (the position is controlled by the proximity switch); removal of the injection unit 5: the injection unit 5 is moved to a specific position (the injection unit 5 is precisely controlled to move the position through the translation servo drive device 302); plasticization: the principle is the same as step 1, preparing for the next injection;

[0071] The following is the product retrieval process:

[0072] (10) Booster cylinder retreat: The main cylinder piston of the booster main cylinder 1005 starts to move in the opposite direction, releasing the mold clamping pressure and causing the piston rod to return to the initial position (the proximity switch provides feedback on the position); after reaching the initial position, the process stops;

[0073] (11) Move out the master cylinder: Move the booster master cylinder 1005 to the specified position by controlling the in-and-out cylinder 1002 (the proximity switch will feedback the information of the position being in place);

[0074] (12) Mold opening: The upper mold of the tire tread mold on the movable mold plate 9 is separated from the middle mold of the tire tread mold. When the mold is opened to a certain position, the mold opening action is completed; (the electronic ruler feeds back the position signal to control the mold opening and closing cylinder 1101 to shrink and move upward);

[0075] (13) Safety lock closed: The locking cylinder 1201 moves in the reverse direction, and the latch 1202 passes through the lock frame 1203 and the buckle 1204, thereby closing the safety lock mechanism 12 to prevent the movable plate 9 from accidentally falling;

[0076] (14) Mold moving out: The middle mold is moved out to the specified position by the reverse rotation of the transmission gear 807 on the mold moving device 8 (controlled by the proximity switch);

[0077] (15) Taking out the product: taking out the tire tread from the tire tread mold;

[0078] At this point, a tire tread is processed and produced in one go.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in the field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A one-time tire tread processing machine, comprising a metering injection unit (1) and a vulcanization molding main machine (2), characterized in that: The metering injection unit (1) comprises a plasticizing unit (4) and an injection unit (5) mounted on a moving device (3); the vulcanization molding main machine (2) comprises four guide columns (201) mounted on a main machine base (202); a lower mold plate (7) is mounted on the main machine base (202); a mold shifting device (8) is arranged above the lower mold plate (7); a movable mold plate (9) is arranged above the mold shifting device (8); a flow divider (902) is arranged below the movable mold plate (9); a glue injection port is arranged on the rear end surface of the flow divider (902); a flow channel is arranged inside the flow divider (902); and the lower mold plate (7), the mold shifting device (8) and the movable mold plate (9) are all penetrated by the four guide columns (201); An upper mold plate (11) is fixed to the top of the guide column (201); a mold opening and closing oil cylinder (1101) installed on the upper mold plate (11) is connected to the top of the movable mold plate (9) via a connecting flange (1102); and the mold opening and closing oil cylinder (1101) controls the up and down movement of the movable mold plate (9); A movable boosting mechanism (10) is provided at the bottom of the upper template (11), and the movable boosting mechanism (10) comprises an inlet and outlet oil cylinder (1002) fixed to the bottom of the upper template (11) via an inverted hanging bracket (1001), and a connecting rod of the inlet and outlet oil cylinder (1002) is connected to a boosting master cylinder (1005) installed in an inverted position at the rear via a fixed joint (1004), and the boosting master cylinder (1005) is fixed to a cylinder slide rail (1003) at the bottom of the upper template (11); A safety lock mechanism (12) is also provided at the bottom of the upper template (11), and the safety lock mechanism (12) comprises a lock frame (1203) fixed to the bottom of the upper template (11) and a locking cylinder (1201) horizontally mounted on the lock frame (1203); a buckle (1204) capable of matching with a lock opening on the lock frame (1203) is provided on the upper end surface of the movable template (9); The plasticizing unit (4) comprises a plasticizing motor (407), the plasticizing motor (407) being connected to a bearing seat (406) in front of the plasticizing motor (407), a coupling in the bearing seat (406) connecting a rotating shaft on the rear plasticizing motor (407) to a front plasticizing barrel (402), a heating oil tank (405) being installed at the front end of the bearing seat (406), the bearing seat (406) and the heating oil tank (405) being sealed, a plasticizing barrel (402) being arranged at the front end of the heating oil tank (405), the heating oil tank (405) and the plasticizing barrel (402) being sealed, and a screw being installed in the plasticizing barrel (402). (403), the interior of the screw (403) is hollow, the tail portion is located in the inner cavity of the heating oil tank (405), and an oil inlet and an oil outlet are arranged on the rod wall, the inner cavity of the heating oil tank (405) contains heat transfer oil, and the heat transfer oil circulates inside the screw (403) and the heating oil tank (405); a hollow conical plunger head (401) is installed at the front end of the plasticizing barrel (402), and a feed port (404) is also arranged at the rear half of the plasticizing barrel (402); a material cavity is formed between the screw (403) and the inner wall of the plasticizing barrel (402), and the material cavity is connected to the outside through the plunger head (401); The injection unit (5) comprises four injection cylinders (504) connected to the injection barrel (502) via injection cylinder seats (503); a connecting seat (506) is fixed to the end of the piston rod (505) behind the four injection cylinders (504); and the center of the connecting seat (506) is connected to the bearing seat (406); The front end of the injection barrel (502) is provided with an injection nozzle (501) connected to the injection port on the movable mold plate (9); the plunger head (401) in the plasticizing unit (4) is fixed in the inner cavity of the injection barrel (502); the injection cylinder (504) drives the plunger head (401) and the plasticizing barrel (402) to move in the injection barrel (502) by extending and retracting the piston rod (505); The moving device (3) comprises a linear slide rail (301) mounted on a base (303); a slide plate (304) is mounted on the linear slide rail (301); an arc-shaped support (305) is arranged above the slide plate (304); the injection unit (5) is fixed on the support (305); a translation servo drive device (302) is also mounted on the base (303); the translation servo drive device (302) is connected to the bottom of the slide plate 304 and can control the movement of the slide plate (304); The mold shifting device (8) comprises a pair of bilateral hanging beams (802) and four mold shifting sleeves (803) mounted on the two hanging beams (802); the mold shifting device (88) is sleeved on the guide column (201) via the four mold shifting sleeves (803); a mold tray (806) is arranged inside the hanging beam (802); a transmission gear (807) is arranged below the front end of the hanging beam (802); the mold tray (806) is slidably connected to the inside of the hanging beam (802) via mold shifting slide rails (804) fixed on both sides thereof; a rack (805) is installed below the mold shifting slide rail (804); the rack (805) is meshed with the transmission gear (807) at the front end; a reducer and a motor are fixed to the side of the transmission gear (807); Two suspension rods (801) are installed on each suspension beam (802), and a limiting cylinder (808) is installed on the top of the suspension rod (801), and the suspension rod (801) passes through the movable template (9), and the maximum lifting height of the movable template (9) is limited by the limiting cylinder (808); The flow channel is connected to the glue injection port and a plurality of glue injection nozzles (901) installed at the bottom of the diverter plate (902); the flow channel inside the diverter plate (902) is divided into a main flow channel (903) for injecting glue and diverter channels (904) for diverting in all directions at the same time; the main flow channel (903) and the diverter channels (904) converge at the center of the diverter plate (902); the ends of the diverter channels (904) are closed; the bottom of the diverter channel (904) is connected to a plurality of glue injection nozzles (901); and the distances between the glue injection nozzles (901) and the center of the flow channel are equal; The inlet and outlet oil cylinder (1002) controls the forward and backward movement of the booster master cylinder (1005), the booster master cylinder (1005) can extend the master cylinder piston, the upper end of the movable plate (9) is installed with a cushion block (1006) and a cushion block mounting seat (1007), the cushion block mounting seat is internally installed with a pressure sensor, and the booster master cylinder (1005) applies a downward pressure to the cushion block (1006) and the upper part of the movable plate (9) through the master cylinder piston; A latch pin (1202) is mounted on the piston rod of the locking oil cylinder (1201); when the movable platen (9) rises until the latch (1204) enters the lock opening, the locking oil cylinder (1201) can push the latch pin (1202) through the lock frame (1203) and the latch (1204), so that the movable platen (9) cannot move up and down; A plurality of locking cylinders (6) are installed at the front end of the injection unit (5), and the locking cylinders (6) connect the injection unit (5) to the vulcanization molding main machine (2) via cylinder locks (601) arranged in front of the locking cylinders (6); The electrical components in the metering injection unit (1) are all controlled by the metering injection electric control box (101), and all the electrical components on the vulcanization molding main machine (2) are controlled by the main machine electric control box (203).

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