Plastic injection molding machine with damping function

Abstract

The utility model relates to a plastic injection molding machine with a damping function, and relates to the field of injection molding machines. The injection molding device comprises an injection molding part and a machine case, the injection molding part comprises an injection molding machine body, external threads are formed in the side, close to a discharging port, of the outer circumferential face of the injection molding machine body, a corrugated pipe is assembled on the discharging port of the injection molding machine body in a communicating mode, a screw ring matched with the external threads is assembled on the injection molding machine body, and hole blocks are fixed to the two sides of the outer wall of the screw ring; a rod frame is assembled on the hole block in a sliding and penetrating mode, a support is fixed to the end face of the outer side of the rod frame, the other end of the support is fixed to the other end of the corrugated pipe, a plurality of first springs are horizontally fixed to one side of the rod frame, the other ends of the first springs are fixed to the hole block, and an elastic piece is horizontally fixed to the other side of the rod frame. During pouring, the pouring barrel is inserted into the mold for plastic liquid injection stability, and it is avoided that an injection molding part is prone to damage after being impacted and vibrated for a long time, and the service life of an injection molding head of an injection molding machine is affected.

Description

Technical Field

[0001] The present application relates to the technical field of injection molding machines, and in particular to a plastic injection molding machine with a shock absorbing function. Background Art

[0002] An injection molding machine is a molding device that uses a plastic molding mold to make plastic products of various shapes from thermoplastic plastics or thermosetting plastics. It usually includes a movable mold and a static mold that are relatively set. When injecting products, the movable mold and the static mold need to be closed, and then the molten injection plastic is injected into the mold cavity surrounded by the movable mold and the static mold. After the injection plastic solidifies, a plastic product is formed.

[0003] The existing announcement number is CN211566733U, and its name is a shock-absorbing injection molding machine, comprising a top plate, an intermediate plate and a bottom plate, wherein the top plate is connected to the intermediate plate through an upper support rod, and the intermediate plate is connected to the bottom plate through a lower support rod, and a fixed plate connected by a sleeve is provided on the lower support rod, and a movable mold is provided on the top surface of the fixed plate, and the bottom surface of the fixed plate is connected to the top surface of the bottom plate through a telescopic hydraulic cylinder, and a fixed mold is provided on the bottom surface of the intermediate plate. An injection molding device driven by a servo motor is provided between the top plate and the intermediate plate, and the servo motor is connected to the bottom surface of the top plate through a first shock-absorbing device, and a second shock-absorbing device is provided between the injection molding device and the upper support rod. The first shock-absorbing device can simultaneously reduce the vibration amplitude of horizontal vibration and vertical vibration, reduce the noise value of the servo motor, and adopt damping liquid shock absorption and spring shock absorption together to produce a good shock-absorbing effect. The second shock-absorbing device can reduce the vibration generated when the screw rotates in the barrel and increase the supporting force of the barrel to ensure the stable operation of the injection molding device.

[0004] With respect to the above-mentioned related technologies, the inventors found that when the above-mentioned injection molding machine is injecting, the injection head is inserted into the mold. During injection molding, the injection molding machine needs to provide a higher pressure to inject the plastic melt into the mold. The pressure during injection molding causes the injection head to generate a large lateral impact force during the injection molding process. This impact vibration is inevitable, but the injection head lacks a shock-absorbing component. The injection head is easily damaged if it is subjected to impact vibration for too long, which affects the service life of the injection molding machine injection head. Utility Model Content

[0005] In order to overcome the situation that the injection head will generate a large lateral impact force during the injection molding process due to the pressure during existing injection molding, this impact vibration is inevitable, but the injection head lacks a shock-absorbing component, and the injection head is easily damaged if it is subjected to impact vibration for too long, which affects the service life of the injection molding machine's injection head. The present application provides a plastic injection molding machine with a shock-absorbing function.

[0006] The present application provides a plastic injection molding machine with a shock-absorbing function, which adopts the following technical solutions:

[0007] A plastic injection molding machine with a shock-absorbing function comprises an injection molded part and a chassis. The injection molded part comprises an injection molding body, an external thread is provided on one side of the outer circumferential surface of the injection molding body close to the discharge port, and a bellows is assembled on the discharge port of the injection molding body, a screw ring is assembled on the injection molding body to match the external thread, and hole blocks are fixed on both sides of the outer wall of the screw ring, a rod rack is assembled on the hole block for sliding through, and a bracket is fixed on the outer end surface of the rod rack, and the other end of the bracket is fixed to the other end of the bellows, multiple first springs are horizontally fixed on one side of the rod rack, and the other ends of the multiple first springs are fixed on the hole block, an elastic sheet is horizontally fixed on the other side of the rod rack, and a first damping rod is horizontally fixed on the other end of the elastic sheet, and the other end of the first damping rod is fixed on the hole block, and the chassis is arranged below the injection molding body.

[0008] By adopting the above technical solution, when the mold is injection-molded using the discharge port of the injection molding machine body in the injection-molded part, the screw thread is assembled on the injection molding machine body, and then the discharge port of the injection molding machine body is connected and fixed with a bellows, and the other end of the bellows is connected to the assembled casting barrel. During casting, the casting barrel is inserted into the mold, and the plastic liquid is added to generate mechanical vibration, causing the rod frame at the end of the casting barrel extrusion bracket to slide horizontally on the hole block, squeezing the first spring to deform and absorb the vibration, and then the deformation potential energy of the first spring is offset by the damping force generated by the extension and contraction of the first damping rod, thereby ensuring the stability of the casting barrel inserted into the mold and the plastic liquid being added during casting, avoiding the injection molding part from being easily damaged by the impact and vibration for too long, which affects the service life of the injection molding machine injection head.

[0009] Optionally, a sleeve is horizontally fixed to the other end of the corrugated tube, and the sleeve is slidably inserted into the casting cylinder.

[0010] By adopting the above technical solution, the end of the corrugated pipe is horizontally connected and fixed with a sleeve, and the sleeve is horizontally slidably sleeved on the casting tube. Later, the casting tube slides horizontally on the sleeve when it is vibrated, which facilitates the later expansion and contraction to reduce vibration.

[0011] Optionally, a push plate is fixed to one end of the casting cylinder close to the bracket, and a second spring is horizontally fixed on the push plate, and the other end of the second spring is fixed to the bracket.

[0012] By adopting the above technical solution, the casting tube is subjected to vibration and slides horizontally on the sleeve in the later stage, squeezing the second spring to deform horizontally between the casting tube and the bracket, thereby absorbing the vibration generated by the casting tube.

[0013] Optionally, a second damping rod is horizontally fixed on the push plate, and the other end of the second damping rod is fixed on the bracket.

[0014] By adopting the above technical solution, the casting cylinder is vibrated and slides horizontally on the sleeve to squeeze the second damping rod to expand and contract. During use, the potential energy generated by the horizontal deformation of the second spring between the casting cylinder and the bracket and the damping force generated by the expansion and contraction of the second damping rod offset the potential energy generated by the deformation of the second spring, thereby ensuring the stability of the casting cylinder when inserted into the mold and filled with plastic liquid during casting.

[0015] Optionally, a slide bar is horizontally fixed on the top surface of the chassis, and a hole seat is symmetrically assembled on the slide bar for horizontal sliding.

[0016] By adopting the above technical solution, sliding rods are symmetrically fixed horizontally on the top surface of the chassis, and the hole seats on the sliding rods move and slide horizontally. When the casting barrel is inserted into the mold during casting, the vibration of the hole seats facilitates the vibration and sliding of the sliding rods.

[0017] Optionally, the top surface of the hole seat is fixedly connected to the bottom of the injection molding machine body.

[0018] By adopting the above technical solution, the hole seat is fixedly connected to the bottom of the injection molding machine body. When the pouring cylinder is inserted into the mold, the vibration facilitates the hole seat to vibrate and slide on the slide rod.

[0019] Optionally, third springs are horizontally fixed on both sides of the top surface of the chassis, and the other ends of the third springs are fixed on the hole seats.

[0020] By adopting the above technical solution, the hole seat vibrates on the slide rod to slide and press the third spring to deform, thereby absorbing the vibration of the casting tube inserted into the mold during casting.

[0021] Optionally, third damping rods are horizontally fixed on both sides of the top surface of the chassis, and the other ends of the third damping rods are fixed on the hole seats.

[0022] By adopting the above technical solution, the hole seat vibrates on the sliding rod and slides to press the third damping rod to extend and retract. The third damping rod returns to generate a damping force. The deformation potential energy of the third spring is offset by the damping force generated by the return of the third damping rod, thereby ensuring the stability of the injection molded part during casting.

[0023] To sum up, the present application includes at least one of the following beneficial technical effects: when the mold is injection molded using the discharge port of the injection molding machine body in the injection molding part, the screw thread is assembled on the injection molding machine body, and then the discharge port of the injection molding machine body is connected and fixed with a bellows, and the other end of the bellows is connected to the assembled casting barrel. During casting, the casting barrel is inserted into the mold, and the filling of plastic liquid produces mechanical vibration, causing the rod frame at the end of the casting barrel extrusion bracket to slide horizontally on the hole block, squeezing the first spring to deform and absorb the vibration, and then the deformation potential energy of the first spring is offset by the damping force generated by the extension and contraction of the first damping rod, thereby ensuring the stability of the casting barrel inserted into the mold and filling of plastic liquid during casting, avoiding the injection molding part from being easily damaged by the impact and vibration for too long, affecting the service life of the injection molding machine injection head. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0025] Figure 2 This is a schematic diagram of the structure of the embodiment of the present application in an exploded state;

[0026] Figure 3 This is a schematic structural diagram of the injection molded part in the embodiment of the present application in a disassembled state;

[0027] Figure 4 This is a schematic diagram of the structure of the spiro ring in the decomposed state according to the embodiment of the present application;

[0028] Figure 5 It is a schematic structural diagram of the chassis in the disassembled state according to an embodiment of the present application.

[0029] Explanation of the accompanying reference numerals: 1. Injection molded part; 11. Injection molding machine body; 111. External thread; 12. Bellows; 13. Casting cylinder; 131. Push plate; 14. Screw ring; 141. Hole block; 15. Rod holder; 151. First spring; 152. Elastic sheet; 153. First damping rod; 16. Bracket; 17. Sleeve; 18. Second damping rod; 19. Second spring; 2. Chassis; 21. Slide rod; 22. Hole seat; 23. Third spring; 24. Third damping rod. DETAILED DESCRIPTION

[0030] The present application is further described in detail below with reference to the accompanying drawings.

[0031] The embodiment of the present application discloses a plastic injection molding machine with a shock absorption function. Figure 1 、 Figure 2 、 Figure 3 and Figure 4 A plastic injection molding machine with a shock-absorbing function includes an injection molded part 1 and a chassis 2. The injection molded part 1 includes an injection molding body 11. An external thread 111 is provided on the outer circumference of the injection molding body 11 near the discharge port, and a bellows 12 is connected and assembled on the discharge port of the injection molding body 11. A screw ring 14 is assembled on the injection molding body 11 to match the external thread 111, and hole blocks 141 are fixed on both sides of the outer wall of the screw ring 14. A rod frame 15 is assembled on the hole block 141, and the outer end of the rod frame 15 is connected to the outer end of the rod frame 15. A bracket 16 is fixed on the surface, and the other end of the bracket 16 is fixed to the other end of the bellows 12. A plurality of first springs 151 are horizontally fixed on one side of the rod frame 15, and the other ends of the plurality of first springs 151 are fixed on the hole block 141. An elastic sheet 152 is horizontally fixed on the other side of the rod frame 15, and a first damping rod 153 is horizontally fixed to the other end of the elastic sheet 152, and the other end of the first damping rod 153 is fixed to the hole block 141. The chassis 2 is arranged below the injection molding body 11.

[0032] By adopting the above technical solution, when the mold is injection-molded using the discharge port of the injection molding body 11 in the injection-molded part 1, the screw ring 14 is threadedly assembled on the injection molding body 11, and then the discharge port of the injection molding body 11 is connected and fixed with a bellows 12, and the other end of the bellows 12 is connected to the assembled pouring cylinder 13. During pouring, the pouring cylinder 13 is inserted into the mold, and the plastic liquid is added to generate mechanical vibration, causing the rod frame 15 at the end of the pouring cylinder 13 to squeeze the bracket 16 to slide horizontally on the hole block 141, squeezing the first spring 151 to deform and absorb the vibration, and then the deformation potential energy of the first spring 151 is offset by the damping force generated by the expansion and contraction of the first damping rod 153, thereby ensuring the stability of the pouring cylinder 13 inserted into the mold and filling with plastic liquid during pouring, avoiding the injection molding part 1 from being easily damaged by the impact and vibration for too long, which affects the service life of the injection molding head of the injection molding machine.

[0033] Reference Figure 3 and Figure 4 , the other end of the bellows 12 is horizontally fixed with a sleeve 17, and the sleeve 17 is slidably inserted into the casting tube 13. The end of the bellows 12 is horizontally connected and fixed with a sleeve 17, and the sleeve 17 is horizontally slidably sleeved on the casting tube 13. Later, when the casting tube 13 is subjected to vibration, it slides horizontally on the sleeve 17, which is convenient for later expansion and contraction to reduce vibration. A push plate 131 is fixed to the end of the casting tube 13 close to the bracket 16, and a second spring 19 is horizontally fixed on the push plate 131, and the other end of the second spring 19 is fixed on the bracket 16. Later, when the casting tube 13 is subjected to vibration, it slides horizontally on the sleeve 17, squeezing the second spring 19 to deform horizontally between the casting tube 13 and the bracket 16, thereby absorbing the vibration generated by the casting tube 13. A second damping rod 18 is horizontally fixed on the push plate 131, and the other end of the second damping rod 18 is fixed on the bracket 16. The casting cylinder 13 is vibrated and slides horizontally on the sleeve 17 to squeeze the second damping rod 18 to expand and contract. During use, the potential energy generated by the horizontal deformation of the second spring 19 between the casting cylinder 13 and the bracket 16 is offset by the damping force generated by the expansion and contraction of the second damping rod 18, which offsets the potential energy generated by the deformation of the second spring 19, thereby ensuring the stability of the casting cylinder 13 when inserted into the mold and filled with plastic liquid during casting.

[0034] Reference Figure 2 and Figure 5A slide bar 21 is horizontally fixed to the top surface of the chassis 2, and a hole seat 22 is symmetrically and horizontally assembled on the slide bar 21. The slide bar 21 is symmetrically fixed to the top surface of the chassis 2. The hole seat 22 on the slide bar 21 moves and slides horizontally. During pouring, the vibration caused by the casting barrel 13 being inserted into the mold facilitates the hole seat 22 to vibrate and slide on the slide bar 21. The top surface of the hole seat 22 is fixedly connected to the bottom of the injection molding machine body 11. The hole seat 22 is fixedly connected to the bottom of the injection molding machine body 11. During pouring, the vibration caused by the casting barrel 13 being inserted into the mold facilitates the hole seat 22 to vibrate and slide on the slide bar 21. A third spring 23 is horizontally fixed on both sides of the top surface of the chassis 2, and the other end of the third spring 23 is fixed to the hole seat 22. When the hole seat 22 vibrates and slides on the slide bar 21, it presses against the deformation of the third spring 23, absorbing the vibration caused by the casting barrel 13 being inserted into the mold during pouring. A third damping rod 24 is horizontally fixed to both sides of the top surface of the chassis 2, and the other end of the third damping rod 24 is fixed to the hole seat 22. The hole seat 22 vibrates on the slide bar 21, sliding against the third damping rod 24 to expand and contract. The third damping rod 24 returns to generate a damping force. The deformation potential energy of the third spring 23 is offset by the damping force generated by the return of the third damping rod 24, ensuring the stability of the injection molded part 1 during casting.

[0035] The implementation principle of a plastic injection molding machine with a shock-absorbing function in the embodiment of the present application is as follows: when the discharge port of the injection molding body 11 in the injection molded part 1 is used to perform injection molding on the mold, the screw ring 14 is threadedly assembled on the injection molding body 11, and then the discharge port of the injection molding body 11 is connected to and fixed with a bellows 12, and the other end of the bellows 12 is connected to an assembled pouring cylinder 13. During pouring, the pouring cylinder 13 is inserted into the mold, and the plastic liquid is added to generate mechanical vibration, resulting in the pouring cylinder 13 being vibrated and sliding horizontally on the sleeve 17 in the later stage, squeezing the second spring 19 to deform horizontally between the pouring cylinder 13 and the bracket 16, and the pouring cylinder 13 is vibrated and slides horizontally on the sleeve 17 to squeeze the second damping rod 18 to retract, and the second spring 19 is hydraulically connected between the pouring cylinder 13 and the bracket 16 during use. The potential energy generated by the flat deformation and the damping force generated by the extension and contraction of the second damping rod 18 offset the potential energy generated by the deformation of the second spring 19. The casting cylinder 13 squeezes the rod frame 15 at the end of the bracket 16 to slide horizontally on the hole block 141, squeezing the first spring 151 to deform and absorb vibration. Then the deformation potential energy of the first spring 151 is offset by the damping force generated by the extension and contraction of the first damping rod 153. The added vibration causes the hole seat 22 to vibrate and slide on the slide rod 21 to press the third spring 23 to deform, absorbing the vibration of the casting cylinder 13 inserted into the mold during casting. The hole seat 22 vibrates and slides on the slide rod 21 to press the third damping rod 24 to extend and contract, and the third damping rod 24 restores to generate a damping force. The deformation potential energy of the third spring 23 is offset by the damping force generated by the recovery of the third damping rod 24.

[0036] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A plastic injection molding machine with a shock-absorbing function, characterized in that: The invention comprises an injection molded part (1) and a chassis (2), wherein the injection molded part (1) comprises an injection molding body (11), an external thread (111) is provided on the side of the outer circumference of the injection molding body (11) close to the discharge port, and a bellows (12) is connected and assembled on the discharge port of the injection molding body (11), a screw ring (14) is assembled on the injection molding body (11) in conjunction with the external thread (111), and hole blocks (141) are fixed on both sides of the outer wall of the screw ring (14), a rod frame (15) is assembled and slidably penetrated on the hole block (141), and a support is fixed on the outer end surface of the rod frame (15). The bracket (16) is fixed to the other end of the bellows (12); a plurality of first springs (151) are fixed horizontally on one side of the rod bracket (15); and the other ends of the plurality of first springs (151) are fixed on the hole block (141); an elastic sheet (152) is fixed horizontally on the other side of the rod bracket (15); and a first damping rod (153) is fixed horizontally on the other end of the elastic sheet (152); and the other end of the first damping rod (153) is fixed on the hole block (141); and the chassis (2) is arranged below the injection molding machine body (11).

2. The plastic injection molding machine with shock absorption function according to claim 1, characterized in that: A sleeve (17) is horizontally fixed to the other end of the corrugated tube (12), and the sleeve (17) is slidably inserted into the casting tube (13).

3. The plastic injection molding machine with shock absorption function according to claim 2, characterized in that: A push plate (131) is fixed to one end of the casting cylinder (13) close to the bracket (16), and a second spring (19) is horizontally fixed on the push plate (131), and the other end of the second spring (19) is fixed to the bracket (16).

4. The plastic injection molding machine with shock absorption function according to claim 3, characterized in that: A second damping rod (18) is horizontally fixed on the push plate (131), and the other end of the second damping rod (18) is fixed on the bracket (16).

5. The plastic injection molding machine with shock absorption function according to claim 4, characterized in that: A slide bar (21) is horizontally fixed on the top surface of the chassis (2), and a hole seat (22) is symmetrically and horizontally slidably assembled on the slide bar (21).

6. The plastic injection molding machine with shock absorption function according to claim 5, characterized in that: The top surface of the hole seat (22) is fixedly connected to the bottom of the injection molding machine body (11).

7. The plastic injection molding machine with shock absorption function according to claim 6, characterized in that: A third spring (23) is horizontally fixed on both sides of the top surface of the chassis (2), and the other end of the third spring (23) is fixed on the hole seat (22).

8. The plastic injection molding machine with shock absorption function according to claim 7, characterized in that: A third damping rod (24) is horizontally fixed on both sides of the top surface of the chassis (2), and the other end of the third damping rod (24) is fixed on the hole seat (22).

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