Screw rod of injection molding machine

Abstract

The utility model discloses an injection molding machine screw which comprises a mounting seat, a mounting rod is arranged at one end of the mounting seat, a plurality of functional sections are sleeved on the mounting rod in a sliding manner, a mounting sliding groove is formed in the mounting rod, mounting sliding strips are correspondingly arranged in the functional sections, a material head is sleeved at the tail end of the mounting rod in a sliding manner, and a sealing bearing is mounted on the outer side of the material head. A plurality of sets of supporting rods are arranged on the outer side of the sealing bearing, sealing gaskets are arranged between every two adjacent sets of functional sections and between the functional sections and the material head, sealing protruding edges are arranged on the two sides of each sealing gasket, sealing grooves are formed in the functional sections in a matched mode, and locking bolts are arranged between the material head and the mounting rod and between the functional sections and the mounting rod. The injection molding screw is convenient to locally overhaul and replace, the supporting stability of the material head part is good, and the deformation in the using process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of screw rods for injection molding machines, and more specifically, to a screw rod for injection molding machines. Background Art

[0002] The screw of the injection molding machine is one of the core components of the injection molding machine, which is mainly responsible for the transportation, compaction, melting, mixing and pressurization of plastics.

[0003] The existing injection molding machine screw has a threaded part and a rod body as an integral part. When the threaded part is worn or damaged, the injection molding machine screw needs to be replaced as a whole, and the damaged part cannot be replaced separately, resulting in a high maintenance cost for the injection molding machine screw in the later stage.

[0004] In addition, in the prior art, the injection molding machine screw is relatively long, and the material head part at the tail end is in a suspended state. During operation, it needs to resist the resistance during material transportation and the weight of the screw itself, which makes the injection molding machine screw prone to deformation during long-term use. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the problems existing in the prior art, the utility model provides an injection molding machine screw to solve the technical problems mentioned in the background technology that the injection molding machine screw in the prior art is not convenient for local inspection or replacement, the tail end is suspended, the support stability is poor, and deformation is easy to occur.

[0007] (II) Technical solution

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A screw rod for an injection molding machine comprises a mounting seat, a mounting rod is arranged at one end of the mounting seat, a sliding sleeve on the mounting rod is provided with a plurality of functional sections, a mounting slide groove is provided on the mounting rod, a mounting slide bar is correspondingly provided inside the functional section, a sliding sleeve on the tail end of the mounting rod is provided with a material head, a sealing bearing is installed on the outer side of the material head, a plurality of groups of support rods are arranged on the outer side of the sealing bearing, sealing gaskets are arranged between two adjacent groups of the functional sections and between the functional sections and the material head, sealing ridges are arranged on both sides of the sealing gasket, and a sealing groove is cooperated with on the functional section, and locking bolts are arranged between the material head and the mounting rod and between the functional section and the mounting rod.

[0010] The utility model is further configured that a positioning column is provided on the sealing gasket, and a positioning groove is provided on the functional section to improve the installation stability of the sealing gasket.

[0011] The utility model is further configured that a connecting groove is provided on the material head to cooperate with the mounting rod, and the material head is fixed to the tail end of the mounting rod through the connecting groove, so as to realize the limited installation of the material head at the tail end of the mounting rod.

[0012] The utility model is further configured that each of the functional sections includes a sleeve, and the sleeve is slidably sleeved on the mounting rod through the matching mounting slide bar and the mounting slide groove, and a functional thread is provided on the outer side of the sleeve to realize the installation of the functional section.

[0013] The utility model is further configured such that the sleeve and the material head are both provided with a locking outer hole, the mounting rod is provided with a locking inner hole, the locking bolt passes through the locking outer hole and is threadedly connected with the locking inner hole to achieve the installation of the locking bolt.

[0014] The utility model is further configured such that a sealing gasket is provided between the locking bolt and the locking outer hole to improve the installation sealing performance of the locking bolt.

[0015] The utility model is further configured such that the support rod comprises a fixed rod connected to a sealed bearing, a telescopic rod is telescopically provided on the fixed rod, a telescopic adjustment structure is provided between the telescopic rod and the fixed rod, and the length of the support rod can be adjusted by cooperating between the fixed rod and the telescopic rod.

[0016] The utility model is further configured such that the telescopic adjustment structure includes a telescopic groove opened on the fixed rod, the telescopic rod slides in the telescopic groove, the side thread of the fixed rod is provided with a fixing bolt, the inner end of the fixing bolt abuts against the side wall of the telescopic rod to realize the telescopic adjustment of the telescopic rod on the fixed rod.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the utility model provides an injection molding machine screw, which has the following beneficial effects:

[0019] 1. The utility model includes a mounting seat, one end of which is provided with a mounting rod, a sliding sleeve on the mounting rod is provided with a plurality of functional sections, a mounting slot is provided on the mounting rod, a mounting slide bar is provided inside the functional section correspondingly, and a locking bolt is provided between the functional section and the mounting rod, so that the functional section can be detachably mounted on the mounting rod through the cooperation of the mounting slide bar, the mounting slot and the locking bolt; when the functional section is damaged, only the damaged functional section can be repaired or replaced, so that the situation that all the screws of the injection molding machine are replaced when they are damaged at a certain place can be avoided, thereby reducing the equipment maintenance cost.

[0020] 2. The utility model is provided with a material head on the sliding sleeve at the tail end of the mounting rod, a locking bolt is provided between the material head and the mounting rod, a sealed bearing is installed on the outside of the material head, and multiple groups of support rods are provided on the outside of the sealed bearing. In this way, during the use of the injection molding machine screw, the support rod can be made to contact with the inner wall of the injection molding machine, so that the material head can be supported during use, the deformation of the injection molding machine screw during use can be avoided, the stability of use can be improved, and the cooperation with the sealed bearing can realize the stable support of the material head part in the screw while facilitating the rotation of the screw itself.

[0021] 3. The utility model is provided with sealing gaskets between two adjacent groups of functional sections and between the functional sections and the material head. Sealing ridges are provided on both sides of the sealing gasket, and sealing grooves are provided on the functional sections. The sealing gasket can achieve sealing at the connection between the two adjacent groups of functional sections and between the functional sections and the material head through the setting of the sealing gasket. In this way, the plastic raw material can be prevented from entering the space between the functional section and the mounting rod through the gap during the conveying process of the injection molding machine screw, thereby improving the overall stability of use. When the sealing gasket is installed, the sealing ridges on both sides correspond to the sealing grooves on the material head and the functional section respectively, thereby strengthening the connection sealing between the two connected components. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a screw rod for an injection molding machine in the utility model;

[0023] Figure 2 It is a schematic diagram of the overall structure decomposition of the utility model;

[0024] Figure 3 It is a schematic cross-sectional view of the overall structure of the functional section in the utility model;

[0025] Figure 4 It is a schematic diagram of the overall structure of the sealing gasket in the utility model;

[0026] Figure 5 This is a schematic diagram of the connection structure between the material head and the support rod in the utility model;

[0027] Figure 6 It is a cross-sectional schematic diagram of the connection structure between the sleeve ring and the mounting rod in the utility model;

[0028] Figure 7 It is a cross-sectional schematic diagram of the connection structure between the fixed rod and the telescopic rod in the utility model.

[0029] In the figure: 1. mounting seat; 2. mounting rod; 3. functional section; 4. mounting slide groove; 5. mounting slide strip; 6. material head; 7. sealed bearing; 8. support rod; 9. sealing gasket; 10. sealing ridge; 11. sealing groove; 12. locking bolt; 13. positioning column; 14. positioning groove; 15. connecting groove; 16. sleeve; 17. functional thread; 18. locking outer hole; 19. locking inner hole; 20. sealing gasket ring; 21. fixing rod; 22. telescopic rod; 23. telescopic groove; 24. fixing bolt. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0032] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0033] See also Figure 1-7 , an injection molding machine screw, comprising a mounting seat 1, a mounting rod 2 is arranged at one end of the mounting seat 1, a plurality of functional sections 3 are slidably sleeved on the mounting rod 2, a mounting slide groove 4 is opened on the mounting rod 2, a mounting slide bar 5 is correspondingly arranged inside the functional section 3, and a locking bolt 12 is arranged between the functional section 3 and the mounting rod 2, so that the functional section 3 is detachably mounted on the mounting rod 2 through the cooperation of the mounting slide bar 5, the mounting slide groove 4 and the locking bolt 12; when the functional section 3 is damaged, only the damaged functional section 3 can be repaired or replaced, so that the situation that the entire injection molding machine screw is replaced when it is damaged at a certain point can be avoided, thereby reducing the equipment maintenance cost.

[0034] The utility model is provided with a material head 6 on the sliding sleeve of the tail end of the mounting rod 2, a locking bolt 12 is arranged between the material head 6 and the mounting rod 2, a sealed bearing 7 is installed on the outer side of the material head 6, and a plurality of support rods 8 are arranged on the outer side of the sealed bearing 7. In this way, during the use of the screw of the injection molding machine, the support rods 8 can be made to contact with the inner wall of the injection molding machine, so that the material head 6 can be supported during use, the deformation of the screw of the injection molding machine during use can be avoided, the stability of use can be improved, and the cooperation with the sealed bearing 7 can realize the stable support of the material head 6 part in the screw and facilitate the rotation demand of the screw itself.

[0035] The utility model is provided with sealing gaskets 9 between two adjacent groups of functional sections 3 and between the functional section 3 and the material head 6. Sealing ridges 10 are provided on both sides of the sealing gasket 9, and a sealing groove 11 is provided on the functional section 3. The setting of the sealing gasket 9 can achieve the sealing of the connection between the two adjacent groups of functional sections 3 and between the functional section 3 and the material head 6. In this way, the situation in which the plastic raw material enters between the functional section 3 and the mounting rod 2 through the gap during the conveying process of the injection molding machine screw can be avoided, thereby improving the overall stability of use. When the sealing gasket 9 is installed, the sealing ridges 10 on both sides correspond to the sealing grooves 11 on the material head 6 and the functional section 3 respectively, so that the connection sealing between the two connected components can be strengthened.

[0036] See also Figure 1-Figure 7 As an implementation of the sealing gasket 9 , a positioning column 13 is provided on the sealing gasket 9 , and a positioning groove 14 is provided on the functional section 3 .

[0037] Specifically, when installing the sealing gasket 9, the positioning column 13 is extended into the corresponding positioning groove 14, so that the stability of the sealing gasket 9 during installation can be improved and the sealing performance can be improved.

[0038] See also Figure 1-Figure 7 As an implementation method of the material head 6: a connecting groove 15 is provided on the material head 6 to cooperate with the mounting rod 2, and the material head 6 is fixed to the tail end of the mounting rod 2 through the connecting groove 15.

[0039] Specifically, the connecting groove 15 is used to realize the sliding limited installation of the material head 6 at the rear of the installation rod 2 , and cooperates with the locking bolt 12 to realize the locking and fixing of the material head 6 on the installation rod 2 .

[0040] See also Figure 1-Figure 7As an implementation method of the functional segment 3: each functional segment 3 includes a sleeve 16, and the sleeve 16 is slidably sleeved on the mounting rod 2 through the matching mounting slide bar 5 and the mounting slide groove 4. A functional thread 17 is arranged on the outer side of the sleeve 16, and the sliding limit installation of the functional segment 3 on the mounting rod 2 is realized through the sleeve 16. Different models of the functional thread 17 can be selected as needed, which is used for the advancement of materials during the use of the injection molding machine.

[0041] See also Figure 1-Figure 7 As an implementation method of the sleeve 16 and the material head 6: the sleeve 16 and the material head 6 are both provided with a locking outer hole 18, the mounting rod 2 is provided with a locking inner hole 19, and the locking bolt 12 passes through the locking outer hole 18 and is threadedly connected with the locking inner hole 19.

[0042] Specifically, the locking bolt 12 is installed between the functional section 3 and the mounting rod 2 and the material head 6 is installed between the mounting rod 2 through the cooperation of the locking outer hole 18 and the locking inner hole 19, thereby achieving the locking and fixation of the functional section 3 and the material head 6 on the mounting rod 2.

[0043] See also Figure 1-Figure 7 As an implementation method of the locking bolt 12: a sealing gasket 9 ring is arranged between the locking bolt 12 and the locking outer hole 18. The arrangement of the sealing gasket 9 ring can enhance the sealing performance at the locking bolt 12 and improve the screwing stability of the locking bolt 12.

[0044] See also Figure 1-Figure 7 As an implementation of the support rod: the support rod includes a fixed rod 21 connected to the sealed bearing 7, a telescopic rod 22 is telescopically arranged on the fixed rod 21, and a telescopic adjustment structure is arranged between the telescopic rod 22 and the fixed rod 21. Through the cooperation of the fixed rod 21 and the telescopic rod 22, the support length of the support rod 8 can be flexibly adjusted, so that the support length of the support rod can correspond to the inner wall of the injection molding machine.

[0045] See also Figure 1-Figure 7 As an implementation of the telescopic adjustment structure: the telescopic adjustment structure includes a telescopic groove 23 provided on the fixed rod 21, the telescopic rod 22 is slidably located in the telescopic groove 23, and the side thread of the fixed rod 21 is provided with a fixing bolt 24, and the inner end of the fixing bolt 24 is against the side wall of the telescopic rod 22. The setting of the telescopic groove 23 can realize the sliding and telescopic installation of the telescopic rod 22 on the fixed rod 21, and the setting of the fixing bolt 24 realizes the locking and fixing of the telescopic rod 22 in the telescopic groove 23.

[0046] In summary, when the overall equipment is in use:

[0047] First, the functional section 3 is slidably installed on the mounting rod 2 through the sleeve 16, the mounting slide groove 4 and the mounting slide bar 5, and the locking bolt 12 is passed through the corresponding locking outer hole 18 and the locking inner hole 19 to achieve locking and fixing of the functional section 3 on the mounting rod 2;

[0048] After that, the sealing gasket 9 is sleeved on the installation rod 2, and then the above steps are repeated to install the next group of functional segments 3, and the sealing gasket 9 is located between the two groups of functional segments 3, and the sealing ridge 10 on the sealing gasket 9 is located in the corresponding sealing groove 11, and the positioning column 13 on the sealing gasket 9 is located in the corresponding positioning groove 14, so as to achieve stable sealing installation of the sealing gasket 9 between the two adjacent groups of functional segments 3;

[0049] Repeat the above steps until all functional segments 3 are installed;

[0050] Afterwards, the material head 6 is slidably engaged on the tail end of the mounting rod 2 through the connecting groove 15 and fixed by the locking bolt 12. When in use, the material head 6 carrying the sealed bearing 7 and the support rod are located inside the casing of the injection molding machine. The support rod is set to support and fix the material head 6 when the injection molding machine screw is in use, thereby reducing the stability of the injection molding machine screw during use and reducing deformation.

[0051] In all the schemes mentioned above, the connection between two parts can be selected according to the actual situation by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which will not be described one by one here. In the above, all fixed connections are preferably considered to be welding. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents;

[0052] In all the schemes mentioned above, those involving the operation of electrical components are controlled by the controller unless otherwise clearly described. Since the devices matched with the controller are commonly used devices, their control principles and line connections are all existing well-known and mature technologies, and their electrical connection relationships and specific circuit structures will not be elaborated here.

Claims

1. A screw for an injection molding machine, comprising a mounting seat (1), characterized in that: A mounting rod (2) is provided at one end of the mounting seat (1), a plurality of functional sections (3) are slidably sleeved on the mounting rod (2), a mounting slide groove (4) is provided on the mounting rod (2), a mounting slide bar (5) is correspondingly provided inside the functional section (3), a material head (6) is slidably sleeved on the tail end of the mounting rod (2), a sealing bearing (7) is installed on the outer side of the material head (6), a plurality of groups of support rods (8) are provided on the outer side of the sealing bearing (7), sealing gaskets (9) are provided between two adjacent groups of the functional sections (3) and between the functional sections (3) and the material head (6), sealing ridges (10) are provided on both sides of the sealing gasket (9), and a sealing groove (11) is provided on the functional section (3), and locking bolts (12) are provided between the material head (6) and the mounting rod (2) and between the functional sections (3) and the mounting rod (2).

2. The screw for an injection molding machine according to claim 1, characterized in that: The sealing pad (9) is provided with a positioning column (13), and the functional section (3) is provided with a positioning groove (14) in cooperation therewith.

3. The screw for an injection molding machine according to claim 1, characterized in that: The material head (6) is provided with a connection groove (15) to cooperate with the installation rod (2), and is fixed to the tail end of the installation rod (2) through the connection groove (15).

4. The screw of an injection molding machine according to claim 1, characterized in that: each The functional sections (3) each comprise a sleeve (16), the sleeve (16) being slidably sleeved on the mounting rod (2) through the cooperation of the mounting slide bar (5) and the mounting slide groove (4), and a functional thread (17) being arranged on the outer side of the sleeve (16).

5. The screw for an injection molding machine according to claim 4, characterized in that: The sleeve (16) and the material head (6) are both provided with a locking outer hole (18), the mounting rod (2) is provided with a locking inner hole (19), and the locking bolt (12) passes through the locking outer hole (18) and is threadedly connected to the locking inner hole (19).

6. The screw for an injection molding machine according to claim 5, characterized in that: A sealing ring (20) is provided between the locking bolt (12) and the locking outer hole (18).

7. An injection molding machine screw according to any one of claims 1 to 6, characterized in that: The support rod (8) comprises a fixed rod (21) connected to the sealed bearing (7), a telescopic rod (22) is telescopically arranged on the fixed rod (21), and a telescopic adjustment structure is arranged between the telescopic rod (22) and the fixed rod (21).

8. The screw for an injection molding machine according to claim 7, characterized in that: The telescopic adjustment structure comprises a telescopic groove (23) provided on a fixed rod (21), the telescopic rod (22) being slidably located in the telescopic groove (23), a fixing bolt (24) being threadedly provided on the side of the fixed rod (21), and an inner end of the fixing bolt (24) being abutted against a side wall of the telescopic rod (22).

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