Pressure injection structure of baby carriage tire injection molding machine

Abstract

The utility model relates to the technical field of baby carriage tire injection molding, and discloses a pressure injection structure of a baby carriage tire injection molding machine, which comprises an injection barrel and an injection head, the left end of the injection barrel is connected with the injection head through a plurality of connecting mechanisms, and each connecting mechanism comprises a connecting rod, a connecting block and a spring. A connecting block is fixedly arranged at the top end of the connecting rod, a spring is fixedly connected to the bottom end of the connecting block, the end, away from the connecting block, of the spring is fixedly connected to the outer wall of the injection barrel body, a plurality of connecting grooves are evenly formed in the left end of the injection barrel body in the circumferential direction, and a sliding groove is formed in the end, away from the injection barrel body, of each connecting groove; a connecting rod is slidably connected to the interior of the sliding groove, a plurality of connecting pieces are evenly arranged on the right side of the injection head in the annular direction, the connecting pieces are all matched with the connecting groove, connecting holes are formed in the connecting pieces, and the connecting holes are matched with the connecting rod; according to the utility model, the injection head can be detached from the injection cylinder body, so that the injection head can be conveniently and independently replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding of baby carriage tires, in particular to a pressure injection structure of a baby carriage tire injection molding machine. Background Art

[0002] There are two main types of tires for baby carriages, one is pneumatic tires, and the other is solid tires. Solid tires are usually made of a single material and are usually made by injection molding machines. The working principle of an injection molding machine is similar to that of a syringe used for injections. It uses the thrust of the screw to inject the plasticized molten plastic into a closed mold cavity, and then obtains the product after solidification. Injection molding is a cyclic process. Each cycle mainly includes quantitative feeding, melt plasticization, pressure injection, mold filling and cooling, and mold opening and part removal. After the plastic part is taken out, the mold is closed again for the next cycle.

[0003] For example, the patent document CN216760607U discloses an injection molding machine with high efficiency of pressure injection, including a machine body, a lower hopper is installed on the top of the machine body, a carrying plate is fixedly connected to the inner wall of the lower hopper, a baffle is provided under the carrying plate, one end of the baffle is connected to a guide rod, the other end of the guide rod is connected to a fixing rod, a connecting rod is fixedly installed on the top of the fixing rod, the other end of the connecting rod is connected to a threaded sleeve, and a threaded rod is penetrated through the inner circle of the threaded sleeve; however, this prior art still has many shortcomings, for example: the existing injection barrel and the injection head are integrally formed, and when the injection head is damaged, the injection head cannot be replaced separately. Utility Model Content

[0004] The purpose of the utility model is to provide a pressure injection structure of a baby carriage tire injection molding machine to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pressure injection structure of a baby stroller tire injection molding machine, comprising an injection cylinder and an injection head, the left end of the injection cylinder is connected to the injection head through a plurality of connecting mechanisms, the connecting mechanism comprises a connecting rod, a connecting block and a spring, the top end of the connecting rod is fixedly provided with the connecting block, the bottom end of the connecting block is fixedly connected to the spring, the end of the spring away from the connecting block is fixedly connected to the outer wall of the injection cylinder, the left end of the injection cylinder is circumferentially evenly provided with a plurality of connecting grooves, each of the connecting grooves is provided with a sliding groove at one end away from the injection cylinder, the connecting rod is slidably connected to the inside of the sliding groove, a plurality of connecting members are circumferentially evenly provided on the right side of the injection head, the plurality of connecting members are all matched with the connecting grooves, the connecting members are provided with connecting holes, and the connecting holes are matched with the connecting rods.

[0006] As a further improvement to the above solution, a pulling-out mechanism is provided on the outer side of the injection cylinder body. The pulling-out mechanism includes a first fixing block, a groove, and a rotating block. The groove is formed on the left side of the first fixing block. The rotating block is rotatably connected inside the groove. A plurality of adjusting holes are circumferentially and evenly formed on the rotating block. An adjusting block is slidably connected inside each adjusting hole. A fixing rod is fixedly connected to the left end of the adjusting block. The bottom end of the fixing rod is fixedly connected to the top end of the connecting block.

[0007] As a further improvement to the above solution, a second fixing block is fixedly connected to the left side of the first fixing block. A plurality of limiting grooves are circumferentially and evenly formed on the second fixing block. The fixing rod is slidably connected inside each limiting groove.

[0008] As a further improvement to the above solution, an adjusting groove is formed on the front side of the first fixing block. A cylinder is fixedly arranged inside the adjusting groove. The telescopic end of the cylinder is hinged to an adjusting rod. The rear end of the adjusting rod is fixedly connected to the rotating block.

[0009] As a further improvement to the above solution, a fixing groove is formed at the bottom end of the connecting groove. The fixing groove is arranged to match the connecting rod.

[0010] As a further improvement to the above solution, an oil cylinder is fixedly connected to the right side of the injection cylinder body. A motor is arranged on the right side of the oil cylinder. The output end of the motor is connected to a rotating shaft through a coupling. The other end of the rotating shaft passes through the oil cylinder and is fixedly connected to a spiral auger. The spiral auger is located inside the injection cylinder body.

[0011] As a further improvement to the above solution, a non-return valve is fixedly connected to the left end of the spiral auger. The outer shape of the non-return valve is arranged to match the inside of the injection cylinder body.

[0012] As a further improvement to the above solution, an injection port is formed at the left end of the injection head. The injection port is on the same horizontal line as the spiral auger. A sealing ring is sleeved on the outer side of the connection between the injection cylinder body and the injection head.

[0013] As a further improvement to the above solution, a plurality of heating blocks are fixedly arranged on the outer wall of the injection cylinder body. A feed hopper is communicated with the top end of the injection cylinder body.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] In this utility model, the left end of the injection cylinder body is connected with an injection head through a plurality of connecting mechanisms. The connecting mechanism includes a connecting rod, a connecting block and a spring. When the injection head is damaged and needs to be replaced or the spiral auger needs to be cleaned, the connecting rod is pulled outwards through the connecting block, so that the bottom end of the connecting rod disengages from the fixing groove and enters the sliding groove, releasing the connection effect between the connecting piece and the connecting groove. Move the injection head to the left to disengage the connecting piece and the connecting groove, and then the damaged injection head can be replaced or the spiral auger can be cleaned. Further, a pulling-out mechanism is arranged on the outer side of the injection cylinder body. When the air cylinder is started, the telescopic movement of the air cylinder drives the adjusting rod to rotate, thereby driving the rotating block to rotate. At the same time, the adjusting block moves along the adjusting hole, thereby driving the fixing rod to move. The fixing rod drives the connecting rod to move through the connecting block, so as to realize the connection and disassembly between the connecting piece and the connecting groove, which is convenient for maintenance personnel to replace the injection head, reduces the time required for disassembling the injection head, and reduces the maintenance intensity of the maintenance personnel. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the first perspective of the present utility model;

[0018] Figure 2 It is a cross-sectional view of the internal structure of the present utility model after removing the pulling-out mechanism;

[0019] Figure 3 For the present utility model's Figure 2 Enlarged view of the structure at A;

[0020] Figure 4 It is a three-dimensional view of the external structure of the present utility model after removing the injection head;

[0021] Figure 5 It is a schematic diagram of the internal structure of the injection cylinder body in the present utility model;

[0022] Figure 6 It is a schematic diagram of a partial structure of the pulling-out mechanism in the present utility model;

[0023] Figure 7 It is a schematic diagram of the injection head structure in the present utility model.

[0024] In the figure: 1, injection cylinder body; 2, injection head; 3, connection mechanism; 31, connecting rod; 32, connection block; 33, spring; 4, connection groove; 5, sliding groove; 6, extraction mechanism; 61, first fixing block; 62, groove; 63, rotating block; 64, adjustment hole; 65, adjustment block; 66, fixing rod; 67, second fixing block; 68, limiting groove; 69, adjustment groove; 610, adjustment rod; 7, fixing groove; 8, sealing ring; 9, connecting piece; 10, connection hole; 11, oil cylinder; 12, motor; 13, rotating shaft; 14, spiral auger; 15, anti-backflow valve; 16, injection port; 17, heating block; 18, feed hopper. Specific implementation mode

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection scope of the present invention. Embodiment 1

[0026] A pressure injection structure of a baby carriage tire injection molding machine, as Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 7 shown, includes an injection cylinder body 1 and an injection head 2. An injection cavity is provided inside the injection head 2 for storing the molten material required for injection. The left end of the injection cylinder body 1 is connected to the injection head 2 through a plurality of connection mechanisms 3. The connection mechanism 3 includes a connecting rod 31, a connection block 32 and a spring 33. The top end of the connecting rod 31 is fixedly provided with a connection block 32. The bottom end of the connection block 32 is fixedly connected to a spring 33. The end of the spring 33 away from the connection block 32 is fixedly connected to the outer wall of the injection cylinder body 1. A plurality of connection grooves 4 are circumferentially and evenly opened at the left end of the injection cylinder body 1. A sliding groove 5 is opened at one end of each connection groove 4 away from the injection cylinder body 1. The connecting rod 31 is slidably connected inside the sliding groove 5. A plurality of connecting pieces 9 are circumferentially and evenly arranged on the right side of the injection head 2. The plurality of connecting pieces 9 are all arranged in a fitting manner with the connection grooves 4. A connection hole 10 is opened on the connecting piece 9. The connection hole 10 is arranged in a fitting manner with the connecting rod 31. A fixing groove 7 is opened at the bottom end of the connection groove 4. The fixing groove 7 is arranged in a matching manner with the connecting rod 31. The connecting piece 9 is inserted into the connection groove 4. The connecting rod 31 passes through the sliding groove 5, the connection hole 10 and the fixing groove 7 in sequence. Due to the elastic action of the spring 33, a downward acting force is applied to the connecting rod 31 through the connection block 32, so that the connecting rod 31 fixes the connecting piece 9, and thus the injection head 2 is detachably connected to the left end of the injection cylinder body 1.

[0027] AsFigure 1 , Figure 2 , Figure 5 As shown in Figure 5 , a hydraulic cylinder 11 is fixedly connected to the right side of the injection cylinder 1. A motor 12 is arranged on the right side of the hydraulic cylinder 11. The output end of the motor 12 is connected to a rotating shaft 13 through a coupling. The other end of the rotating shaft 13 passes through the hydraulic cylinder 11 and is fixedly connected to a screw auger 14. The screw auger 14 is located inside the injection cylinder 1. A non-return valve 15 is fixedly connected to the left end of the screw auger 14. The outer shape of the non-return valve 15 is matched with the inside of the injection cylinder 1. The non-return valve 15 can prevent the melt in the injection cavity from flowing back into the inside of the injection cylinder 1. An injection port 16 is opened at the left end of the injection head 2. The injection port 16 is on the same horizontal line as the screw auger 14. A sealing ring 8 is sleeved on the outside of the connection between the injection cylinder 1 and the injection head 2. The sealing ring 8 has a sealing effect and is made of a high-temperature resistant material. When the motor 12 is started, the motor 12 drives the screw auger 14 to rotate through the rotating shaft 13. The screw auger 14 conveys the injection molding raw material into the injection cavity inside the injection head 2. During the conveying process, the injection molding raw material is melted by the heating block 17 to prevent un-melted raw material from entering the mold. When the injection cavity is full, the hydraulic cylinder 11 drives the screw auger 14 to move leftward as a whole, and injects the melt inside the injection cavity into the mold through the injection port 16.

[0028] As Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown in Figure 1 , Figure 2 , Figure 4 , and Figure 5 , a plurality of heating blocks 17 are fixedly arranged on the outer wall of the injection cylinder 1. During the conveying process, the injection molding raw material is melted by the heating blocks 17 to prevent un-melted raw material from entering the mold. The top end of the injection cylinder 1 is communicated with a feed hopper 18, and the raw material required for injection molding is added into the injection cylinder 1 through the feed hopper 18.

[0029] During the operation of Embodiment 1, the raw material required for injection molding is added into the injection cylinder 1 through the feed hopper 18. The motor 12 is started. The motor 12 drives the screw auger 14 to rotate through the rotating shaft 13. The screw auger 14 conveys the injection molding raw material into the injection cavity inside the injection head 2. During the conveying process, the injection molding raw material is melted by the heating blocks 17 to prevent un-melted raw material from entering the mold. When the injection cavity is full, the hydraulic cylinder 11 drives the screw auger 14 to move leftward as a whole, and injects the melt inside the injection cavity into the mold through the injection port 16. When the injection head 2 is damaged and needs to be replaced or when the screw auger 14 needs to be cleaned, the connecting rod 31 is pulled outward through the connecting block 32, so that the bottom end of the connecting rod 31 is separated from the fixing groove 7 and enters the sliding groove 5, releasing the connection effect between the connecting member 9 and the connecting groove 4. The injection head 2 is moved leftward, so that the connecting member 9 and the connecting groove 4 are separated, and then the damaged injection head 2 can be replaced or the screw auger 14 can be cleaned. Embodiment 2

[0030] Embodiment 2 is based on Embodiment 1. As Figure 1 , Figure 4 , Figure 6 shown, a pulling-out mechanism 6 is arranged on the outer side of the injection cylinder body 1. The pulling-out mechanism 6 includes a first fixing block 61, a groove 62 and a rotating block 63. A groove 62 is formed on the left side of the first fixing block 61. A rotating block 63 is rotatably connected inside the groove 62. A plurality of adjusting holes 64 are circumferentially and evenly formed on the rotating block 63. An adjusting block 65 is slidably connected inside each adjusting hole 64. The left end of the adjusting block 65 is fixedly connected with a fixing rod 66. The bottom end of the fixing rod 66 is fixedly connected to the top end of the connecting block 32. A second fixing block 67 is fixedly connected to the left side of the first fixing block 61. A plurality of limiting grooves 68 are circumferentially and evenly formed on the second fixing block 67. The fixing rod 66 is slidably connected inside each limiting groove 68. An adjusting groove 69 is formed on the front side of the first fixing block 61. An air cylinder 611 is fixedly arranged inside the adjusting groove 69. The telescopic end of the air cylinder 611 is hinged with an adjusting rod 610. The rear end of the adjusting rod 610 is fixedly connected to the rotating block 63. The air cylinder 611 drives the adjusting rod 610 to rotate when telescoping, thereby driving the rotating block 63 to rotate. At the same time, the adjusting block 65 moves along the adjusting hole 64, thereby driving the fixing rod 66 to move. The fixing rod 66 drives the connecting rod 31 to move through the connecting block 32, so as to realize the connection and disassembly between the connecting piece 9 and the connecting groove 4, thereby facilitating the maintenance personnel to complete the replacement of the injection head 2, reducing the time required for disassembling the injection head, and reducing the maintenance intensity of the maintenance personnel.

[0031] When Embodiment 2 works, when disassembling the injection head 2, start the air cylinder 611. The air cylinder 611 drives the rotating block 63 to rotate clockwise through the adjusting rod 610. The adjusting block 65 moves along the adjusting hole 64, thereby driving the fixing rod 66 to move outward. The fixing rod 66 drives the connecting rod 31 to move outward through the connecting block 32, so that the connecting rod 31 is separated from the fixing groove 7 and the connecting hole 10, thereby releasing the connection effect of the connecting rod 31 on the connecting piece 9 and the connecting groove 4; when installing the injection head 2, insert the connecting piece 9 into the connecting groove 4. The air cylinder 611 drives the rotating block 63 to rotate counterclockwise through the adjusting rod 610. The adjusting block 65 moves along the adjusting hole 64, thereby driving the fixing rod 66 to move inward. The fixing rod 66 drives the connecting rod 31 to move inward through the connecting block 32, so that the bottom end of the connecting rod 31 passes through the connecting hole 10 and is inserted into the fixing groove 7, thereby connecting the connecting piece 9 and the connecting groove 4.

[0032] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A pressure injection structure of a baby carriage tire injection molding machine, comprising an injection barrel (1) and an injection head (2), characterized in that: The left end of the injection cylinder (1) is connected to the injection head (2) via a plurality of connection mechanisms (3), wherein the connection mechanisms (3) comprise a connection rod (31), a connection block (32) and a spring (33), wherein the top end of the connection rod (31) is fixedly provided with the connection block (32), the bottom end of the connection block (32) is fixedly connected to the spring (33), and one end of the spring (33) away from the connection block (32) is fixedly connected to the outer wall of the injection cylinder (1). A plurality of connecting grooves (4) are evenly arranged in an annular direction at the end, and a slide groove (5) is arranged at the end of each connecting groove (4) away from the injection barrel (1), and the connecting rod (31) is slidably connected inside the slide groove (5). A plurality of connecting members (9) are evenly arranged in an annular direction at the right side of the injection head (2), and the plurality of connecting members (9) are all matched with the connecting grooves (4). A connecting hole (10) is arranged on the connecting member (9), and the connecting hole (10) is matched with the connecting rod (31).

2. The pressure injection structure of a baby carriage tire injection molding machine according to claim 1, characterized in that: An extraction mechanism (6) is arranged on the outer side of the injection cylinder body (1), and the extraction mechanism (6) comprises a first fixed block (61), a groove (62) and a rotating block (63). The groove (62) is provided on the left side of the first fixed block (61), and the rotating block (63) is rotatably connected inside the groove (62). A plurality of adjustment holes (64) are evenly arranged in an annular direction on the rotating block (63), and an adjustment block (65) is slidably connected inside each of the adjustment holes (64). A fixing rod (66) is fixedly connected to the left end of the adjustment block (65), and the bottom end of the fixing rod (66) is fixedly connected to the top end of the connecting block (32).

3. The pressure injection structure of a baby carriage tire injection molding machine according to claim 2, characterized in that: A second fixing block (67) is fixedly connected to the left side of the first fixing block (61); a plurality of limiting grooves (68) are evenly arranged in an annular direction on the second fixing block (67); and the fixing rod (66) is slidably connected inside each limiting groove (68).

4. The pressure injection structure of a baby carriage tire injection molding machine according to claim 3, characterized in that: An adjustment slot (69) is provided on the front side of the first fixed block (61), a cylinder (611) is fixedly arranged inside the adjustment slot (69), an adjustment rod (610) is hingedly connected to the telescopic end of the cylinder (611), and a rear end of the adjustment rod (610) is fixedly connected to the rotating block (63).

5. The pressure injection structure of a baby carriage tire injection molding machine according to claim 1, characterized in that: A fixing groove (7) is provided at the bottom end of the connecting groove (4), and the fixing groove (7) is matched with the connecting rod (31).

6. The pressure injection structure of a baby carriage tire injection molding machine according to claim 1, characterized in that: The right side of the injection cylinder (1) is fixedly connected to an oil cylinder (11), and the right side of the oil cylinder (11) is provided with a motor (12). The output end of the motor (12) is connected to a rotating shaft (13) via a coupling, and the other end of the rotating shaft (13) passes through the oil cylinder (11) and is fixedly connected to a spiral auger (14). The spiral auger (14) is located inside the injection cylinder (1).

7. The pressure injection structure of a baby carriage tire injection molding machine according to claim 6, characterized in that: A backflow prevention valve (15) is fixedly connected to the left end of the spiral auger (14), and the shape of the backflow prevention valve (15) is matched with the interior of the injection cylinder (1).

8. The pressure injection structure of a baby carriage tire injection molding machine according to claim 7, characterized in that: An injection port (16) is provided at the left end of the injection head (2), and the injection port (16) is located on the same horizontal line as the spiral auger (14). A sealing ring (8) is provided on the outside of the connection between the injection barrel (1) and the injection head (2).

9. The pressure injection structure of a baby carriage tire injection molding machine according to claim 1, characterized in that: A plurality of heating blocks (17) are fixedly arranged on the outer wall of the injection cylinder (1), and the top end of the injection cylinder (1) is connected to a feed hopper (18).

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