Injection molding machine screw easy to disassemble
By designing a screw that is easy to disassemble and using locking devices and pin connections, the problem of local wear of screws in the existing technology in the high temperature and high pressure environment is solved, and the rapid replacement and maintenance of screws is realized, reducing the cost of use and improving the Practical performance of the equipment.
Patent Information
- Application Number
- CN202323549963.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-25
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2033-12-25
AI Technical Summary
The existing injection molding machine screws are prone to local wear in high temperature, high pressure, high torque and frequent start-up environments, and are subject to strong corrosion when processing highly corrosive materials, resulting in inevitable wear and difficulty in partial replacement, which increases the cost of use. and waste of resources.
A screw of an easy-to-removal injection molding machine is designed, including a screw, a screw head and a mounting rod. The first screw, a second screw and a third screw are realized by providing a locking device, including a telescopic rod, a locking member, a spring and a telescopic cavity. The screw fixation and quick replacement are used, and the screw connection is simplified.
It realizes rapid replacement of screws and local maintenance, reduces usage costs, improves practical performance, avoids waste of resources, and extends the service life of the equipment.
Smart Images
Figure CN222245965U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of injection molding machines, in particular to an easily disassembled screw rod of an injection molding machine. Background Art
[0002] The injection screw is an important part of the injection molding machine. Its function is to convey, compact, melt, stir and pressurize the plastic. All of these are accomplished by the rotation of the screw in the barrel. When the screw rotates, the plastic will produce friction and mutual movement against the inner wall of the barrel, the bottom surface of the screw groove, the propulsion surface of the screw ridges, and between the plastics. The forward propulsion of the plastic is the result of this combination of movements, and the heat generated by friction is also absorbed to increase the temperature of the plastic and melt the plastic.
[0003] Most of the screws of existing injection molding machines are integrated. During the process of screw transmission of materials, the working environment of the injection molding machine screw is very poor. It is in high temperature, high pressure, high torque, high friction and frequent start-up environment for a long time. Moreover, when processing some highly corrosive materials (such as PVC), it is subject to very strong corrosion. Environmental factors such as high temperature and high pressure are required by the injection molding process conditions, and the wear caused is inevitable. However, the wear of the screw may only occur in a local area. Therefore, an easily disassembled injection molding machine screw is needed, which can replace the local screw, reduce the use cost, and avoid resource waste. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide an easily disassembled screw rod for an injection molding machine in view of the above-mentioned defects.
[0005] The utility model solves the technical problem by adopting the following technical solution: an easily disassembled screw for an injection molding machine, comprising a screw, a screw head and a mounting rod, wherein the screw head is fixedly mounted on the top of the screw, a mounting opening is provided at the bottom of the screw, a mounting cavity connected to the mounting opening is provided inside the screw, and the mounting rod is horizontally slidably arranged in the mounting cavity;
[0006] The screw comprises a first screw, a second screw and a third screw, the screw head is fixedly arranged at the top end of the third screw, the installation opening is opened at the bottom end of the first screw, and the installation rod can be slidably installed in the installation cavity of the first screw, the second screw and the third screw in sequence through the installation opening;
[0007] Two sets of locking devices are arranged in the mounting rod, and the locking device includes a telescopic rod, a locking piece, a spring and a telescopic cavity. The telescopic cavity is opened in the mounting rod, and the telescopic rod is horizontally slidably arranged in the telescopic cavity. An oblique groove is opened in the middle of the telescopic rod. The locking piece is "T"-shaped and includes a horizontal plate at the top and a vertical plate at the bottom. The bottom of the vertical plate at the bottom end of the locking piece is set as a hypotenuse. A first through groove is opened on one side of the mounting rod and the first through groove is connected with the telescopic cavity. The vertical plate of the locking piece can slide through the first through groove and enter into the telescopic cavity. The spring is horizontally arranged at the right end of the telescopic cavity and one end of the spring is fixedly connected to the right end of the telescopic rod.
[0008] Furthermore, a placement groove is provided on one side of the first screw and the third screw, a second through groove is provided at the bottom of the placement groove, the second through groove is connected to the installation cavity, the second through groove and the first through groove are located on the same vertical line and the second through groove and the first through groove have the same caliber, the area of the cross plate at the top of the locking member is larger than the caliber of the first through groove and the second through groove, and the cross plate of the locking member is slidably set in the placement groove.
[0009] Furthermore, a mounting cover is arranged on the top of the placement slot and completely covers the opening of the placement slot, a buffer pad is arranged on the top of the placement slot, and bolts are arranged on both sides of the mounting cover to fix the mounting cover on the screw rod.
[0010] Furthermore, the locking device is divided into two groups, one group is arranged in the first screw rod, and the other group is arranged in the third screw rod.
[0011] Furthermore, a spiral thread is arranged around the screw rod in the circumferential direction.
[0012] The utility model has the following beneficial effects: the utility model is provided with a first screw rod, a second screw rod, a third screw rod and a locking device, and the locking device includes a telescopic rod, a locking member, a spring and a telescopic cavity. The locking member is inserted into the oblique groove of the telescopic rod to complete the engagement, so that the first screw rod, the second screw rod and the third screw rod are fixedly arranged on the mounting rod. A placement groove is provided on one side of the first screw rod and the third screw rod, and the screw rod at the corresponding position can be quickly replaced by removing the locking member in the placement groove. The use cost is reduced and the practical performance is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The foregoing and other objects, features and advantages of the present invention will become apparent from the following detailed description in conjunction with the accompanying drawings.
[0014] Figure 1 This is an overall front view of the screw of the utility model.
[0015] Figure 2 This is a front view of the installation rod of the utility model.
[0016] Figure 3 This is a front view of the screw rod of the utility model.
[0017] Figure 4 It is an enlarged schematic diagram of point A of the present utility model.
[0018] Among them: 1 is a screw, 2 is a screw head, 3 is a mounting rod, 4 is a mounting port, 5 is a mounting cavity, 6 is a first screw, 7 is a second screw, 8 is a third screw, 9 is a telescopic rod, 10 is a locking piece, 11 is a spring, 12 is a telescopic cavity, 13 is a first through slot, 14 is an oblique slot, 15 is a hypotenuse, 16 is a horizontal plate, 17 is a vertical plate, 18 is a placement slot, 19 is a second through slot, 20 is a mounting cover, 21 is a buffer pad, 22 is a bolt, and 23 is a thread. DETAILED DESCRIPTION
[0019] The utility model is further described below in conjunction with the accompanying drawings.
[0020] See also Figure 1-Figure 4 , an easily disassembled injection molding machine screw, comprising a screw 1, a screw head 2 and a mounting rod 3, wherein the screw head 2 is fixedly mounted on the top of the screw 1, a mounting opening 4 is provided at the bottom of the screw 1, a mounting cavity 5 communicating with the mounting opening 4 is provided inside the screw 1, and the mounting rod 3 is horizontally slidably arranged in the mounting cavity 5;
[0021] The screw rod 1 includes a first screw rod 6, a second screw rod 7 and a third screw rod 8, a screw head 2 is fixedly arranged at the top end of the third screw rod 8, a mounting opening 4 is opened at the bottom end of the first screw rod 6, and a mounting rod 3 can be slidably installed in the mounting cavity 5 in the first screw rod 6, the second screw rod 7 and the third screw rod 8 in sequence through the mounting opening 4;
[0022] Two sets of locking devices are arranged in the mounting rod 3, the locking devices include a telescopic rod 9, a locking piece 10, a spring 11 and a telescopic cavity 12, the telescopic cavity 12 is opened in the mounting rod 3, the telescopic rod 9 is horizontally slidably arranged in the telescopic cavity 12, an oblique groove 14 is opened in the middle of the telescopic rod 9, the locking piece 10 is "T"-shaped and includes a horizontal plate 16 at the top and a vertical plate 17 at the bottom, the bottom of the vertical plate 17 at the bottom of the locking piece 10 is set as a hypotenuse 15, a first through groove 13 is opened on one side of the mounting rod 3, and the first through groove 13 is connected with the telescopic cavity 12, the vertical plate 17 of the locking piece 10 can slide through the first through groove 13 and enter into the telescopic cavity 12, the spring 11 is horizontally arranged at the right end of the telescopic cavity 12 and one end of the spring 11 is fixedly connected to the right end of the telescopic rod 9.
[0023] Furthermore, a placement groove 18 is provided on one side of the first screw 6 and the third screw 8, and a second through groove 19 is provided at the bottom of the placement groove 18. The second through groove 19 is connected to the installation cavity 5. The second through groove 19 and the first through groove 13 are located on the same vertical line and the second through groove 19 and the first through groove 13 have the same caliber. The area of the cross plate 16 at the top of the locking member 10 is larger than the caliber of the first through groove 13 and the second through groove 19, and the cross plate 16 of the locking member 10 is slidably set in the placement groove 18.
[0024] Furthermore, a mounting cover 20 is provided at the top of the placement groove 18 and the mounting cover 20 completely covers the opening of the placement groove 18, a buffer pad 21 is provided at the top of the placement groove 18, and bolts 22 are provided on both sides of the mounting cover 20 to fix the mounting cover 20 on the screw rod 1.
[0025] Furthermore, the locking device is divided into two groups, one group is arranged in the first screw rod 6 , and the other group is arranged in the third screw rod 8 .
[0026] Furthermore, a spiral thread 23 is circumferentially arranged on the screw rod 1 .
[0027] In the embodiment of the present utility model, please refer to Figure 1-Figure 4When the screw rod 1 is operating normally, the installation rod 3 is first passed through the installation opening 4 and slidably installed in the installation cavity 5 in the first screw rod 6, the second screw rod 7 and the third screw rod 8 in sequence. Two sets of locking devices are arranged in the installation rod 3, one set is arranged in the first screw rod 6, and the other set is arranged in the third screw rod 8. The locking device includes a telescopic rod 9, a locking member 10, a spring 11 and a telescopic cavity 12. The telescopic cavity 12 is opened in the installation rod 3, and the telescopic rod 9 is horizontally slidably arranged in the telescopic cavity 12. The spring 11 is horizontally arranged at the right end of the telescopic cavity 12 and one end of the spring 11 is fixedly connected to the right end of the telescopic rod 9. An oblique groove 14 is opened in the middle of the telescopic rod 9. The locking member 10 is in a "T" shape and includes a horizontal plate 16 at the top and a vertical plate 17 at the bottom. The bottom of the vertical plate 17 at the bottom of the locking member 10 is set as a hypotenuse 15. The installation rod A first through slot 13 is provided on one side of the locking member 10 and the first through slot 13 is communicated with the telescopic cavity 12, a placement slot 18 is provided on one side of the first screw 6 and the third screw 8, a second through slot 19 is provided at the bottom of the placement slot 18, the second through slot 19 is communicated with the installation cavity 5, the second through slot 19 and the first through slot 13 are located on the same vertical line, and the second through slot 19 and the first through slot 13 have the same diameter, the area of the cross plate 16 at the top of the locking member 10 is larger than the diameter of the first through slot 13 and the second through slot 19, and the cross plate 16 of the locking member 10 16 is slidably arranged in the placement groove 18. Due to the influence of gravity, the vertical plate 17 of the locking member 10 slides from the second through groove 19 into the first through groove 13 and finally enters the telescopic cavity 12. The bevel 15 at the bottom of the vertical plate 17 coincides with the bevel groove 14 in the middle of the telescopic rod 9. The other side of the bevel groove 14 is set as a right angle side. When the bevel 15 of the vertical plate 17 falls into the bevel groove 14, the right angle side of the bevel groove 14 supports the vertical plate 17 of the locking member 10 due to the thrust of the spring 11. At this time, the first screw 6 and the third screw 6 are completed. The screw rod 8 and the mounting rod 3 are initially engaged, and the top of the placement groove 18 is provided with an installation cover 20 and the installation cover 20 completely covers the opening of the placement groove 18. Bolts 22 are provided on both sides of the installation cover 20 to fix the installation cover 20 on the screw rod 1. A buffer pad 21 can be pre-installed in the placement groove 18 and placed above the locking member 10. The buffer pad 21 can fill the remaining space above the locking member 10 in the placement groove 18 to prevent the locking member 10 from detaching from the telescopic rod 9 when the screw rod 1 is in operation, thus completing the final engagement. Since the second screw rod 7 is arranged between the first screw rod 6 and the third screw rod 8, and the first screw rod 6, the second screw rod 7 and the third screw rod 8 are connected by a latch, it is only necessary to control the disassembly of the first screw rod 6 and the third screw rod 8, and the second screw rod 7 does not need to be provided with a separate locking device.
[0028] When the first screw rod 6, the second screw rod 7 and the third screw rod 8 need to be replaced, it is only necessary to continue to squeeze the telescopic rod 9 into the telescopic cavity 12. When the external squeezing force is greater than the thrust of the spring 11, the locking member 10 continues to be pushed inward as the telescopic rod 9 leaves the inclined slot 14. At this time, the mounting cover 20 is opened, the buffer pad 21 in the mounting cover 20 is taken out, and the locking member 10 is taken out. At this time, the first screw rod 6 can be removed from the mounting rod 3. Since the first screw rod 6, the second screw rod 7 and the third screw rod 8 are connected by a pin, the second screw rod 7 is clamped by the first screw rod 6 and the third screw rod 8. By removing the first screw 6, the second screw 7 can be removed accordingly. Finally, the third screw 8 can be removed by the method of removing the first screw 6.
[0029] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0030] In addition, in the present utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present utility model. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.
Claims
1. An easily disassembled screw for an injection molding machine, comprising a screw (1), a screw head (2) and a mounting rod (3), characterized in that: The screw head (2) is fixedly mounted on the top end of the screw (1); a mounting opening (4) is provided at the bottom end of the screw (1); a mounting cavity (5) communicating with the mounting opening (4) is provided inside the screw (1); and the mounting rod (3) is horizontally slidably disposed in the mounting cavity (5); The screw rod (1) comprises a first screw rod (6), a second screw rod (7) and a third screw rod (8); the screw rod head (2) is fixedly arranged at the top end of the third screw rod (8); the mounting opening (4) is opened at the bottom end of the first screw rod (6); the mounting rod (3) can be slidably installed in the mounting cavities (5) in the first screw rod (6), the second screw rod (7) and the third screw rod (8) in sequence through the mounting opening (4); Two sets of locking devices are arranged in the mounting rod (3), and the locking devices include a telescopic rod (9), a locking member (10), a spring (11) and a telescopic cavity (12). The telescopic cavity (12) is arranged in the mounting rod (3), and the telescopic rod (9) is arranged to slide horizontally in the telescopic cavity (12). An inclined groove (14) is arranged in the middle of the telescopic rod (9). The locking member (10) is in a "T" shape and includes a horizontal plate (16) at the top and a vertical plate (17) at the bottom. The bottom of the vertical plate (17) at the bottom end of the member (10) is arranged as a bevel (15); a first through slot (13) is provided on one side of the mounting rod (3) and the first through slot (13) is communicated with the telescopic cavity (12); the vertical plate (17) of the locking member (10) can slide through the first through slot (13) and enter the telescopic cavity (12); the spring (11) is horizontally arranged at the right end of the telescopic cavity (12) and one end of the spring (11) is fixedly connected to the right end of the telescopic rod (9).
2. The easily disassembled screw for injection molding machine according to claim 1, characterized in that: A placement groove (18) is provided on one side of the first screw rod (6) and the third screw rod (8), a second through groove (19) is provided at the bottom of the placement groove (18), the second through groove (19) is communicated with the installation cavity (5), the second through groove (19) and the first through groove (13) are located on the same vertical line, and the second through groove (19) and the first through groove (13) have the same caliber, the area of the transverse plate (16) at the top of the locking member (10) is larger than the calibers of the first through groove (13) and the second through groove (19), and the transverse plate (16) of the locking member (10) is slidably arranged in the placement groove (18).
3. The easily detachable screw for injection molding machine according to claim 2, characterized in that: A mounting cover (20) is disposed at the top of the placement groove (18) and the mounting cover (20) completely covers the opening of the placement groove (18). A buffer pad (21) is disposed at the top of the placement groove (18). Bolts (22) are disposed on both sides of the mounting cover (20) for fixing the mounting cover (20) to the screw rod (1).
4. The easily disassembled screw for injection molding machine according to claim 1, characterized in that: The locking device is divided into two groups, one group is arranged in the first screw rod (6), and the other group is arranged in the third screw rod (8).
5. The easily disassembled screw for injection molding machine according to claim 1, characterized in that: The screw rod (1) is provided with a spiral thread (23) around its circumference.