Injection molding machine for fender of cab

Abstract

The invention discloses an injection molding machine for a fender of a cab, and belongs to the technical field of plastic injection molding, the injection molding machine comprises a workbench, a support is fixedly mounted on the top wall of the workbench, a lower mold is fixedly mounted on the top wall of the workbench, and an electric push rod is fixedly mounted on the support; an upper mold is fixedly mounted at the output end of the electric push rod, and an exhaust assembly is arranged on the upper mold; the exhaust assembly comprises a pressure relief opening formed in the upper mold. According to the scheme, the pressure relief opening is formed, after raw materials enter the mold cavity, residual airflow in the mold cavity flows to the outside through the pressure relief opening, and after the mold cavity is filled with the raw materials, the buoyancy plate can drive the sealing plate to block the pressure relief opening, so that the situation that bubbles are formed on the surface of a formed part due to unsmooth exhaust is avoided; and the injection molding block can block the injection molding pipe, so that the injection molding pipe is prevented from being adhered with raw materials in the mold cavity to influence the product quality, and the effect of improving the product quality is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of plastic injection molding, and more particularly to an injection molding machine for a cab fender. Background Art

[0002] The cab fender is an important part of the vehicle. It is mainly used to prevent mud, water, gravel and other debris rolled up by the wheels from splashing onto the vehicle body or cab, protecting the safety of the vehicle and pedestrians.

[0003] Injection molding machine is also known as plastic injection molding machine. It is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. Injection molding machines are usually composed of injection systems, mold clamping systems, hydraulic systems, electrical control systems, lubrication systems, heating and cooling systems, safety monitoring systems, etc. Injection molding machines are often used in the production of cab fenders, that is, the raw materials are injected into the fender mold through the injection molding machine, and the fender is formed after the raw materials are cooled. However, at present, during plastic injection molding production, the plastic slurry may be unevenly dispersed, and the plastic slurry contains a certain amount of bubbles, which will cause hollowing defects in the injection molded product, thereby reducing the injection molding quality.

[0004] In response to the above problems, some solutions have been provided in the prior art. For example, a Chinese invention application with publication number CN119189204A discloses a plastic injection molding machine. The device rotates a stirring paddle and causes the stirring paddle to vibrate, so that bubbles in the plastic slurry are discharged upward, thereby improving the quality of the injection molded product. Although the prior art can improve the product quality to a certain extent, it still has certain limitations. That is, since air will remain in the mold cavity after the mold is closed, the air pressure in the mold cavity will also increase during the pressurized injection process. Poor exhaust will form bubbles on the surface of the molded part, thereby seriously affecting the quality of the product. Summary of the invention

[0005] In view of the problems existing in the prior art, the object of the present invention is to provide an injection molding machine for a cab fender, which can improve the product quality.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] An injection molding machine for a cab fender comprises a workbench, a bracket is fixedly mounted on the top wall of the workbench, a lower mold is fixedly mounted on the top wall of the workbench, an electric push rod is fixedly mounted on the bracket, an upper mold is fixedly mounted on the output end of the electric push rod, and an exhaust assembly is provided on the upper mold; The exhaust assembly includes a pressure relief port provided on the upper mold, a mounting groove provided on the upper mold, a buoyancy plate slidably installed in the mounting groove, a sealing plate fixedly installed on the buoyancy plate, a first spring installed between the top wall of the buoyancy plate and the mounting groove, an injection molding machine body fixedly installed on the top wall of the bracket, an injection molding port provided on the upper mold, an electric telescopic rod provided on the injection molding machine body, an injection molding tube connected to the injection molding machine body installed on the output end of the electric telescopic rod, and a linkage assembly provided on the lower mold.

[0008] Furthermore, the linkage assembly includes a horizontal rod horizontally slidably installed on the upper mold, the upper mold is provided with an injection groove that cooperates with the injection tube, an injection block fixedly connected to the horizontal rod is horizontally slidably installed in the injection groove, a return spring is commonly installed between the horizontal rod and the upper mold, a first memory alloy wire is commonly installed between one end of the horizontal rod away from the injection block and the upper mold, and a control assembly is provided on the upper mold.

[0009] Furthermore, the control component includes a groove opened on the upper mold, a fixing groove is opened on the horizontal rod, a fixing rod cooperating with the fixing groove is slidably installed in the groove, a second spring is installed between the fixing groove and the fixing rod, and a first air pipe connected to the groove is inserted in the installation groove.

[0010] Furthermore, an ejection groove is provided on the bottom wall of the upper mold, an ejection rod is slidably installed in the ejection groove, a linkage spring is installed between the ejection groove and the ejection rod, a first magnet block is embedded on the ejection rod, and a second magnet block that repel each other with the first magnet block is embedded on the lower mold.

[0011] Furthermore, a linkage groove is provided on the lower mold, a vertical rod on the lower mold is vertically slidably installed in the linkage groove, a push plate is fixedly installed on the top wall of the vertical rod, a third spring is jointly installed between the push plate and the lower mold, and the second magnet block is slidingly matched with the linkage groove, a fourth spring is jointly installed between the bottom wall of the second magnet block and the linkage groove, and a vibrating assembly that cooperates with the vertical rod is provided on the lower mold.

[0012] Furthermore, the vibrating assembly includes a horizontal cavity opened on the lower mold, vertical grooves are evenly opened on the top wall of the horizontal cavity, an elastic rod is fixedly installed in the vertical groove, a mounting plate is horizontally slidably installed in the horizontal cavity, protrusions that cooperate with the elastic rod are evenly fixedly installed on the mounting plate, a fifth spring is jointly installed between the mounting plate and the horizontal cavity, a limiting groove is opened on the side wall of the vertical rod, a push rod is arranged in the limiting groove, and an inclined groove that cooperates with the push rod is opened on the mounting plate.

[0013] Furthermore, the bottom wall of the limiting groove is an inclined surface, the push rod is rotationally matched with the limiting groove, and a mainspring is installed between the push rod and the limiting groove.

[0014] Furthermore, a connecting groove is provided on the bottom wall of the horizontal cavity, a spring telescopic rod is slidably installed in the connecting groove, a sixth spring is jointly installed between the bottom wall of the spring telescopic rod and the connecting groove, a control groove that slides with the output end of the spring telescopic rod is provided on the bottom wall of the mounting plate, a second memory alloy wire is jointly installed between the bottom wall of the spring telescopic rod and the connecting groove, and a heat-conducting rod that fits the second memory alloy wire is fixedly installed on the top wall of the lower mold.

[0015] Furthermore, a cavity is formed on the push plate, air holes are formed on the side walls of the cavity, an air inlet pipe connected to the outside is inserted on the side walls of the horizontal cavity, and an air groove connected to the cavity is formed on the vertical rod.

[0016] Furthermore, a baffle is fixedly mounted on the side wall of the injection molding block.

[0017] Compared with the prior art, the present invention has the following beneficial effects: (1) This scheme opens a pressure relief port. After the raw material enters the mold cavity, the residual air flow in the mold cavity flows to the outside through the pressure relief port. After the raw material fills the mold cavity, the buoyancy plate drives the sealing plate to seal the pressure relief port, thereby preventing the formation of bubbles on the surface of the molded part due to poor exhaust. At the same time, after the mold cavity is filled with raw material, the injection block can also seal the injection tube, thereby preventing the injection tube from sticking to the raw material in the mold cavity and drawing the wires to affect the product quality, thereby improving the product quality. (2) In this scheme, an elastic rod is provided. As the raw material enters the mold cavity, the heat-conducting rod is heated and transfers the heat to the second memory alloy wire. Then, the second memory alloy wire is heated and stretched. At this time, the sixth spring stretches and drives the spring telescopic rod to disengage from the control groove. At this time, the fifth spring stretches and drives the protrusion to hit the elastic rod through the mounting plate. When the protrusion disengages from the elastic rod, the elastic rod swings back and forth under the action of its own elastic force. Then, the elastic rod can transfer the vibration to the top wall of the lower mold, and then transfer it to the raw material in the mold cavity through the lower mold, so that the raw material in the mold cavity can be vibrated and the raw material in the mold cavity can be made more compact, thereby further improving the product quality. (3) This scheme opens a cavity. When the push plate pushes the fender upward, the external air flow can flow to the gap between the fender and the lower mold through the air inlet pipe, horizontal cavity, air groove, cavity, and air hole. At the same time, in the process of the vertical rod moving upward, the elastic rod can be driven to vibrate again, and the vibration is transmitted to the top wall of the lower mold. The air inlet pipe, horizontal cavity, air groove, cavity, and air hole flow to the gap between the fender and the lower mold, thereby preventing the negative pressure adsorption between the fender and the lower mold, which causes the fender to deform, and further improves the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a cross-sectional view of the upper mold and the lower mold of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle; Figure 5 For the present invention Figure 4 Enlarged view of point C in the middle; Figure 6 It is a combination diagram of the vertical rod, the push rod and the mainspring of the present invention; Figure 7 It is a combined diagram of the horizontal rod and the fixing groove of the present invention; Figure 8 It is a combined diagram of the mounting plate, the protrusion and the inclined groove of the present invention.

[0019] Description of the numbers in the figure: 1. Workbench; 2. Bracket; 3. Lower mold; 4. Electric push rod; 5. Upper mold; 6. Exhaust assembly; 601. Pressure relief port; 602. Buoyancy plate; 603. Sealing plate; 604. First spring; 605. Injection molding machine body; 606. Injection molding port; 607. Electric telescopic rod; 608. Injection molding tube; 7. Linkage assembly; 701. Horizontal rod; 702. Injection molding groove; 703. Injection molding block; 704. Return spring; 705. First memory alloy wire; 8. Control assembly; 801. Fixing groove; 802. Fixing rod; 803. Groove; 804. Second spring; 805. First air pipe; 901, ejection rod; 902, linkage spring; 903, first magnet block; 904, second magnet block; 905, vertical rod; 906, push plate; 907, third spring; 908, fourth spring; 10. Vibration assembly; 101. Horizontal cavity; 102. Elastic rod; 103. Mounting plate; 104. Bump; 105. Fifth spring; 106. Limiting groove; 107. Push rod; 108. Oblique groove; 111. Spring; 112. Spring telescopic rod; 113. Sixth spring; 114. Control slot; 115. Second memory alloy wire; 116. Heat conducting rod; 121, cavity; 122, air hole; 123, air groove; 124, air inlet pipe; 13. Baffle; 14. Mold cavity. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0021] See also Figures 1 to 8 , an injection molding machine for a cab fender, comprising a workbench 1, a bracket 2 is fixedly mounted on the top wall of the workbench 1, a lower mold 3 is fixedly mounted on the top wall of the workbench 1, an electric push rod 4 is fixedly mounted on the bracket 2, and an upper mold 5 is fixedly mounted on the output end of the electric push rod 4, and an exhaust assembly 6 is provided on the upper mold 5; The exhaust component 6 includes a pressure relief port 601 provided on the upper mold 5, a mounting groove provided on the upper mold 5, a buoyancy plate 602 slidably installed in the mounting groove, a sealing plate 603 fixedly installed on the buoyancy plate 602, a first spring 604 is installed between the top wall of the buoyancy plate 602 and the mounting groove, an injection molding machine body 605 is fixedly installed on the top wall of the bracket 2, an injection molding port 606 is provided on the upper mold 5, an electric telescopic rod 607 is provided on the injection molding machine body 605, an injection molding tube 608 connected to the injection molding machine body 605 is installed on the output end of the electric telescopic rod 607, and a linkage component 7 is provided on the lower mold 3.

[0022] The linkage assembly 7 includes a horizontal rod 701 horizontally slidably mounted on the upper mold 5, an injection groove 702 cooperating with the injection tube 608 is opened on the upper mold 5, an injection block 703 fixedly connected to the horizontal rod 701 is horizontally slidably mounted in the injection groove 702, a return spring 704 is installed between the horizontal rod 701 and the upper mold 5, a first memory alloy wire 705 is installed between the end of the horizontal rod 701 away from the injection block 703 and the upper mold 5, and a control assembly 8 is provided on the upper mold 5.

[0023] The control component 8 includes a groove 803 opened on the upper mold 5, a fixing groove 801 is opened on the horizontal rod 701, a fixing rod 802 cooperating with the fixing groove 801 is slidably installed in the groove 803, a second spring 804 is installed between the fixing groove 801 and the fixing rod 802, and a first air pipe 805 connected to the groove 803 is inserted in the installation groove.

[0024] When in use, first control the output end of the electric push rod 4 to extend, and drive the lower mold 3 and the upper mold 5 to fit together to form a mold cavity 14, then the output end of the electric telescopic rod 607 extends and drives the injection tube 608 to enter the injection port 606, after the injection tube 608 enters the injection port 606, control the raw material in the injection molding machine body 605 to enter the mold cavity 14 through the injection tube 608 and the injection groove 702, as the raw material enters the mold cavity 14, the air flow in the mold cavity 14 is squeezed and flows to the outside through the pressure relief port 601, and then as the raw material in the mold cavity 14 increases, the raw material gradually buoys. The buoyancy plate 602 contacts the sealing plate 603, and under the action of buoyancy, the buoyancy plate 602 drives the sealing plate 603 to move upward. At this time, the first spring 604 is compressed and has a tendency to recover. During the upward movement of the sealing plate 603, the pressure relief port 601 can be blocked, thereby preventing the raw material from blocking the pressure relief port 601. That is, by setting the pressure relief port 601, during the process of the injection molding machine body 605 injecting the raw material into the mold cavity 14, the air flow in the mold cavity 14 can be gradually discharged to the outside, thereby preventing the formation of bubbles on the surface of the molded part due to poor exhaust, thereby improving the product quality.

[0025] In the initial state, the first memory alloy wire 705 is in a contracted state, and the return spring 704 is in a compressed state. At this time, the fixing rod 802 is located in the fixing groove 801 to limit the horizontal rod 701. As the raw material enters the mold cavity 14, the first memory alloy wire 705 is heated and stretched. At this time, the return spring 704 has a tendency to stretch. When the buoyancy plate 602 drives the sealing plate 603 to move upward and block the pressure relief port 601, the airflow in the installation groove is squeezed and flows to the groove 80 through the first air pipe 805. 3, and then under the action of the airflow, the fixed rod 802 moves upward and compresses the second spring 804. In the process of the fixed rod 802 moving upward, it gradually breaks away from the fixed groove 801. At this time, the first spring 604 stretches and drives the horizontal rod 701 to move, and in the process of the horizontal rod 701 moving, it drives the injection block 703 to slide along the injection groove 702 and seal the injection tube 608, thereby preventing the injection tube 608 from sticking to the raw material in the mold cavity 14 and drawing the wires to affect the product quality, thereby further improving the product quality.

[0026] like Figure 2 , Figure 4 , Figure 5 As shown, an ejection groove is provided on the bottom wall of the upper mold 5, an ejection rod 901 is slidably installed in the ejection groove, a linkage spring 902 is installed between the ejection groove and the ejection rod 901, a first magnet block 903 is embedded on the ejection rod 901, and a second magnet block 904 that repel each other with the first magnet block 903 is embedded on the lower mold 3.

[0027] The lower mold 3 is provided with a linkage groove, and a vertical rod 905 on the lower mold 3 is vertically slidably installed in the linkage groove. A push plate 906 is fixedly installed on the top wall of the vertical rod 905. A third spring 907 is installed between the push plate 906 and the lower mold 3, and the second magnet block 904 is slidably matched with the linkage groove, and a fourth spring 908 is installed between the bottom wall of the second magnet block 904 and the linkage groove. The lower mold 3 is provided with a vibrating assembly 10 that cooperates with the vertical rod 905.

[0028] By adopting the above technical solution, in the process of the electric push rod 4 driving the upper mold 5 to fit with the lower mold 3, the upper mold 5 drives the first magnet block 903 to gradually approach the second magnet block 904, and then under the action of the repulsive force between the second magnet block 904 and the first magnet block 903, the first magnet block 903 drives the ejection rod 901 to move into the ejection groove. At this time, the linkage spring 902 is compressed and has a tendency to recover. At the same time, the second magnet block 904 moves downward and compresses the fourth spring 908, and gradually disengages from the vertical rod 905 during the downward movement of the second magnet block 904. At this time, the third spring 907 contracts and drives the vertical rod 905 to move downward, and drives the push plate 906 to move downward during the downward movement of the vertical rod 905. Then, after the injection block 703 blocks the injection tube 608, the user can first control the output end of the electric telescopic rod 607 to contract and drive the injection tube 608 to disengage from the injection port 606. When the raw material in the mold cavity 14 After cooling, the memory alloy wire contracts and drives the injection block 703 to disengage from the injection port 606 through the horizontal rod 701. The user can control the output end of the electric push rod 4 to contract and drive the upper mold 5 to move upward. In the process of the upper mold 5 moving upward, the first magnet block 903 and the second magnet block 904 are driven away. At this time, the linkage spring 902 and the fourth spring 908 respectively drive the ejection rod 901 and the second magnet block 904 to approach each other. In the process of the ejection rod 901 moving downward, the cooled and formed fender is driven to move downward. At this time, the injection groove 702 is connected to the outside through the injection port 606, that is, in the process of the ejection rod 901 pushing the fender to move downward, the outside airflow can flow to between the fender and the upper mold 5 through the injection port 606 and the injection groove 702, thereby avoiding negative pressure between the fender and the upper mold 5 and adsorption together, resulting in deformation of the fender when the ejection rod 901 pushes the fender, affecting product quality, and further improving product quality.

[0029] When the upper mold 5 loses contact with the mudguard, the fourth spring 908 drives the second magnet block 904 to contact with the vertical rod 905, and drives the push plate 906 to move upward through the vertical rod 905. At this time, the third spring 907 is compressed and has a tendency to recover, and in the process of the push plate 906 moving upward, it drives the mudguard to move upward and lose contact with the lower mold 3, thereby facilitating demoulding.

[0030] like Figure 4 , Figure 6 , Figure 8 As shown, the vibrating assembly 10 includes a horizontal cavity 101 opened on the lower mold 3, vertical grooves are evenly opened on the top wall of the horizontal cavity 101, an elastic rod 102 is fixedly installed in the vertical groove, a mounting plate 103 is horizontally slidably installed in the horizontal cavity 101, a protrusion 104 that cooperates with the elastic rod 102 is evenly fixedly installed on the mounting plate 103, a fifth spring 105 is jointly installed between the mounting plate 103 and the horizontal cavity 101, a limiting groove 106 is opened on the side wall of the vertical rod 905, a push rod 107 is arranged in the limiting groove 106, and an inclined groove 108 that cooperates with the push rod 107 is opened on the mounting plate 103.

[0031] The bottom wall of the limiting groove 106 is an inclined surface, the push rod 107 is rotatably matched with the limiting groove 106 , and a clockwork spring 111 is installed between the push rod 107 and the limiting groove 106 .

[0032] A connecting groove is provided on the bottom wall of the horizontal cavity 101, and a spring telescopic rod 112 is slidably installed in the connecting groove. A sixth spring 113 is installed between the bottom wall of the spring telescopic rod 112 and the connecting groove. A control groove 114 that slidably cooperates with the output end of the spring telescopic rod 112 is provided on the bottom wall of the mounting plate 103, and a second memory alloy wire 115 is installed between the bottom wall of the spring telescopic rod 112 and the connecting groove. A heat-conducting rod 116 that fits the second memory alloy wire 115 is fixedly installed on the top wall of the lower mold 3.

[0033] The push plate 906 is provided with a cavity 121 , the side wall of the cavity 121 is provided with an air hole 122 , the side wall of the horizontal cavity 101 is provided with an air inlet pipe 124 connected to the outside, and the vertical rod 905 is provided with an air groove 123 connected to the cavity 121 .

[0034] By adopting the above technical solution, in the initial state, the second memory alloy wire 115 is in a contracted state, and at this time the spring telescopic rod 112 and the sixth spring 113 are both in a compressed state. In the process of the first magnet block 903 driving the second magnet block 904 to move downward and disengage from the vertical rod 905, the third spring 907 contracts and drives the vertical rod 905 to move downward through the push plate 906. In the process of the vertical rod 905 moving downward, the top wall of the limit groove 106 applies a downward thrust to the push rod 107 and drives the push rod 107 to move downward. Then, in the process of the push rod 107 moving downward, the push rod 107 gradually contacts with the inclined groove 108 and applies a downward thrust to the inclined surface of the inclined groove 108. Under the action of the thrust, the mounting plate 103 moves along the horizontal cavity 101 and compresses the fifth spring 105. In the process of the movement of the mounting plate 103, the control groove 114 is driven to gradually contact with the output end of the spring telescopic rod 112. At this time, the output end of the spring telescopic rod 112 extends and inserts into the control groove 11 4, and then as the raw material enters the mold cavity 14, the heat-conducting rod 116 is heated and transfers heat to the second memory alloy wire 115, and then the second memory alloy wire 115 is heated and stretched, at this time the sixth spring 113 stretches and drives the spring telescopic rod 112 to move downward, and gradually loses contact with the control groove 114 during the downward movement of the spring telescopic rod 112, and at this time the fifth spring 105 stretches and drives the mounting plate 103 to reset, and drives the protrusion 104 to move during the resetting of the mounting plate 103, and then the protrusion 104 will hit the elastic rod 102 during the movement, and cause the elastic rod 102 to deform, when the protrusion 104 is out of contact with the elastic rod 102, the elastic rod 102 swings back and forth under the action of its own elastic force, and then the elastic rod 102 can transmit the vibration to the top wall of the lower mold 3, and transmit it to the raw material in the mold cavity 14 through the lower mold 3, so that the raw material in the mold cavity 14 can be vibrated, and the raw material in the mold cavity 14 is made more compact, thereby further improving the product quality.

[0035] When the raw material is cooled, the second memory alloy wire 115 returns to room temperature and contracts. During the contraction of the second memory alloy wire 115, it drives the spring telescopic rod 112 to move upward and compress the fifth spring 105. During the downward movement of the spring telescopic rod 112, the output end of the spring telescopic rod 112 contacts the bottom wall of the mounting plate 103, and the output end of the spring telescopic rod 112 contracts under the action of the bottom wall of the mounting plate 103. Then, in the process of the second magnet block 904 pushing the fender out through the vertical rod 905 and the push plate 906, the external airflow flows into the cavity 121 through the air inlet pipe 124, the horizontal cavity 101, and the air groove 123, and flows to the gap between the fender and the lower mold 3 through the air hole 122 on the cavity 121, thereby preventing the negative pressure adsorption between the fender and the lower mold 3, causing the fender to deform, and further improving the product quality.

[0036] In the process of the second magnet block 904 driving the vertical rod 905 to move upward, the vertical rod 905 drives the push rod 107 to move upward, and then gradually contacts the inclined slot 108 in the process of the push rod 107 moving upward. At this time, the push rod 107 rotates under the action of the inclined slot 108, and the spring 111 starts to accumulate force. When the bottom wall of the push rod 107 contacts the bottom wall of the limiting slot 106, the push rod 107 cannot continue to rotate, and then the push rod 107 pushes the mounting plate 103 to move again through the inclined slot 108 and squeezes the fifth spring 105. Since the push rod 107 rotates at this time, the distance that the push rod 107 pushes the mounting plate 103 to move becomes shorter, so when the mounting plate 1 During the movement of 03, the control groove 114 cannot be driven to contact with the spring telescopic rod 112. Then, when the push rod 107 is out of contact with the inclined groove 108, the fifth spring 105 stretches and drives the protrusion 104 to hit the elastic rod 102 through the mounting plate 103, so that the elastic rod 102 swings and transmits the vibration to the mold cavity 14. When the external airflow flows through the air inlet pipe 124, the horizontal cavity 101, the air groove 123, the cavity 121, and the air hole 122 to the gap between the fender and the lower mold 3, the top wall of the lower mold 3 is driven to vibrate, so that the airflow is fully in contact with the gap between the fender and the lower mold 3, further preventing product deformation and further improving product quality.

[0037] like Figure 5 As shown, a baffle 13 is fixedly mounted on the side wall of the injection block 703 .

[0038] By adopting the above technical solution, when the horizontal rod 701 drives the injection block 703 to move and blocks the injection tube 608, the baffle 13 can block the injection groove 702, thereby preventing the raw material from entering the injection groove 702 and affecting the normal resetting of the injection block 703.

[0039] Instructions for use: When in use, first control the output end of the electric push rod 4 to extend, and drive the lower mold 3 and the upper mold 5 to fit together to form a mold cavity 14, then the output end of the electric telescopic rod 607 extends and drives the injection tube 608 to enter the injection port 606, after the injection tube 608 enters the injection port 606, control the raw material in the injection molding machine body 605 to enter the mold cavity 14 through the injection tube 608 and the injection groove 702, as the raw material enters the mold cavity 14, the air flow in the mold cavity 14 is squeezed and flows to the outside through the pressure relief port 601, and then as the raw material in the mold cavity 14 increases, the raw material gradually contacts the buoyancy plate 602, and under the action of buoyancy, the buoyancy plate 602 drives the sealing plate 603 to move upward, at this time the first spring 6 04 is compressed and has a tendency to recover, and the pressure relief port 601 can be blocked during the upward movement of the sealing plate 603; when the buoyancy plate 602 drives the sealing plate 603 to move upward and blocks the pressure relief port 601, the airflow in the installation slot is squeezed and flows into the groove 803 through the first air pipe 805, and then the fixed rod 802 moves upward under the action of the airflow and compresses the second spring 804, and gradually loses contact with the fixed groove 801 during the upward movement of the fixed rod 802. At this time, the first spring 604 stretches and drives the horizontal rod 701 to move, and drives the injection block 703 to slide along the injection groove 702 and block the injection tube 608 during the movement of the horizontal rod 701;In the process of the electric push rod 4 driving the upper mold 5 to fit with the lower mold 3, the upper mold 5 drives the first magnet block 903 to gradually approach the second magnet block 904, and then under the action of the repulsive force between the second magnet block 904 and the first magnet block 903, the first magnet block 903 drives the ejection rod 901 to move into the ejection groove. At this time, the linkage spring 902 is compressed and has a tendency to recover. At the same time, the second magnet block 904 moves downward and compresses the fourth spring 908. In the process of the second magnet block 904 moving downward, it gradually loses contact with the vertical rod 905. At this time, the third spring 907 contracts and drives the vertical rod 905 to move downward. In the process, the push plate 906 is driven to move downward. Then, after the injection block 703 blocks the injection tube 608, the user can first control the output end of the electric telescopic rod 607 to contract and drive the injection tube 608 to disengage from the injection port 606. When the raw material in the mold cavity 14 is cooled, the memory alloy wire contracts and drives the injection block 703 to disengage from the injection port 606 through the horizontal rod 701. The user can control the output end of the electric push rod 4 to contract and drive the upper mold 5 to move upward. In the process of the upper mold 5 moving upward, the first magnet block 903 and the second magnet block 904 are driven away. At this time, the linkage spring 902 and the fourth spring 908 respectively drive the ejection rod 901 and the second magnet block 904 are close to each other, and the cooled and formed fender is driven to move downward in the process of the ejection rod 901 moving downward, and at this time, the injection groove 702 is connected with the outside through the injection port 606, that is, in the process of the ejection rod 901 pushing the fender to move downward, the outside airflow can flow to between the fender and the upper mold 5 through the injection port 606 and the injection groove 702; in the process of the protrusion 104 moving, it will hit the elastic rod 102 and cause the elastic rod 102 to deform. When the protrusion 104 is out of contact with the elastic rod 102, the elastic rod 102 swings back and forth under the action of its own elastic force, and then the elastic rod 102 can transmit the vibration to the lower mold The fifth spring 105 stretches and drives the protrusion 104 to hit the elastic rod 102 through the mounting plate 103, so that the elastic rod 102 swings and transmits the vibration to the cavity 14, so that when the external airflow flows to the gap between the fender and the lower mold 3 through the air inlet pipe 124, the horizontal cavity 101, the air groove 123, the cavity 121, and the air hole 122, the top wall of the lower mold 3 is driven to vibrate, so that the airflow fully contacts the gap between the fender and the lower mold 3, further preventing the product from changing. ;

[0040] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An injection molding machine for a cab fender, comprising a workbench (1), a bracket (2) being fixedly mounted on the top wall of the workbench (1), a lower mold (3) being fixedly mounted on the top wall of the workbench (1), an electric push rod (4) being fixedly mounted on the bracket (2), an upper mold (5) being fixedly mounted on the output end of the electric push rod (4), and an exhaust assembly (6) being provided on the upper mold (5); Features: The exhaust assembly (6) comprises a pressure relief port (601) provided on the upper mold (5); a mounting groove is provided on the upper mold (5); a buoyancy plate (602) is slidably mounted in the mounting groove; a sealing plate (603) is fixedly mounted on the buoyancy plate (602); a first spring (604) is installed between the top wall of the buoyancy plate (602) and the mounting groove; an injection molding machine body (605) is fixedly mounted on the top wall of the bracket (2); an injection molding port (606) is provided on the upper mold (5); an electric telescopic rod (607) is provided on the injection molding machine body (605); an injection molding tube (608) connected to the injection molding machine body (605) is installed on the output end of the electric telescopic rod (607); and a linkage assembly (7) is provided on the lower mold (3).

2. The injection molding machine for a cab fender according to claim 1, characterized in that: The linkage assembly (7) comprises a horizontal rod (701) horizontally slidably mounted on the upper mold (5); an injection molding groove (702) cooperating with the injection molding tube (608) is provided on the upper mold (5); an injection molding block (703) fixedly connected to the horizontal rod (701) is horizontally slidably mounted in the injection molding groove (702); a return spring (704) is installed between the horizontal rod (701) and the upper mold (5); a first memory alloy wire (705) is installed between an end of the horizontal rod (701) away from the injection molding block (703) and the upper mold (5); and a control assembly (8) is provided on the upper mold (5).

3. The injection molding machine for a cab fender according to claim 2, characterized in that: The control assembly (8) comprises a groove (803) formed on the upper mold (5), a fixing groove (801) formed on the horizontal rod (701), a fixing rod (802) cooperating with the fixing groove (801) being slidably mounted in the groove (803), a second spring (804) being mounted between the fixing groove (801) and the fixing rod (802), and a first air pipe (805) communicating with the groove (803) being inserted into the mounting groove.

4. The injection molding machine for a cab fender according to claim 3, characterized in that: The bottom wall of the upper mold (5) is provided with an ejection groove, an ejection rod (901) is slidably mounted in the ejection groove, a linkage spring (902) is mounted between the ejection groove and the ejection rod (901), a first magnet block (903) is embedded in the ejection rod (901), and a second magnet block (904) that repel the first magnet block (903) is embedded in the lower mold (3).

5. The injection molding machine for a cab fender according to claim 4, characterized in that: The lower mold (3) is provided with a linkage groove, in which a vertical rod (905) on the lower mold (3) is vertically slidably mounted, a push plate (906) is fixedly mounted on the top wall of the vertical rod (905), a third spring (907) is installed between the push plate (906) and the lower mold (3), and the second magnet block (904) is slidably engaged with the linkage groove, a fourth spring (908) is installed between the bottom wall of the second magnet block (904) and the linkage groove, and a vibrating assembly (10) engaged with the vertical rod (905) is provided on the lower mold (3).

6. The injection molding machine for a cab fender according to claim 5, characterized in that: The vibrating assembly (10) comprises a horizontal cavity (101) formed on a lower mould (3), a top wall of the horizontal cavity (101) being uniformly provided with vertical grooves, an elastic rod (102) being fixedly installed in the vertical groove, a mounting plate (103) being horizontally slidably installed in the horizontal cavity (101), a convex block (104) cooperating with the elastic rod (102) being uniformly fixedly installed on the mounting plate (103), a fifth spring (105) being installed between the mounting plate (103) and the horizontal cavity (101), a limiting groove (106) being formed on the side wall of the vertical rod (905), a push rod (107) being provided in the limiting groove (106), and an inclined groove (108) cooperating with the push rod (107) being formed on the mounting plate (103).

7. The injection molding machine for a cab fender according to claim 6, characterized in that: The bottom wall of the limiting groove (106) is an inclined surface, the push rod (107) and the limiting groove (106) are rotationally matched, and a spring (111) is installed between the push rod (107) and the limiting groove (106).

8. The injection molding machine for a cab fender according to claim 7, characterized in that: A connecting groove is provided on the bottom wall of the horizontal cavity (101), a spring telescopic rod (112) is slidably mounted in the connecting groove, a sixth spring (113) is installed between the bottom wall of the spring telescopic rod (112) and the connecting groove, a control groove (114) is provided on the bottom wall of the mounting plate (103) and is slidably matched with the output end of the spring telescopic rod (112), a second memory alloy wire (115) is installed between the bottom wall of the spring telescopic rod (112) and the connecting groove, and a heat conducting rod (116) in contact with the second memory alloy wire (115) is fixedly mounted on the top wall of the lower mold (3).

9. The injection molding machine for a cab fender according to claim 8, characterized in that: The push plate (906) is provided with a cavity (121), a side wall of the cavity (121) is provided with an air hole (122), an air inlet pipe (124) connected to the outside is inserted on the side wall of the horizontal cavity (101), and an air groove (123) connected to the cavity (121) is provided on the vertical rod (905).

10. The injection molding machine for a cab fender according to claim 9, characterized in that: A baffle (13) is fixedly mounted on the side wall of the injection molding block (703).

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