Injection molding machine screw capable of being rapidly installed

Abstract

The utility model relates to the technical field of injection molding machines, and discloses an injection molding machine screw capable of being quickly mounted, which comprises a screw and a coupling, and a quick dismounting structure is arranged between the screw and the coupling. The clamping rings are arranged at the end, close to the coupling, of the outer wall of the screw rod and can form a circular ring in an embracing mode, the keys are arranged between the clamping rings and the screw rod and are locally connected with the clamping rings and the screw rod in a clamped mode, and the mounting holes are formed in the two end faces of the clamping rings in a penetrating mode and are evenly formed in the circumferential direction of the circular ring. According to the screw rod mounting structure, the mounting process can be simplified, the time required for dismounting can be shortened, and the assembly efficiency can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection molding machine technical field especially relates to a kind of injection molding machine screw that can be quickly installed. BACKGROUND

[0002] The function of injection molding machine screw is transmission component for transmitting injection material, generally need to be connected with driving motor by coupling to obtain rotary power, the connecting structure of existing injection molding machine screw and coupling can refer to the specific structure shown in the drawing of specification Figure 1 , including screw 1 and coupling 2, the end of screw 1 is connected with spline connector 3, a plurality of through holes are formed around the axis of spline connector 3 on its end face, bolt 6 is arranged in the through hole, threaded hole connected with fastening bolt 6 is arranged on the end face of coupling 2, when bolt 6 is tightened, spline connector 3 and coupling 2 are tightly attached to each other and realize circumferential fixation, screw 1 and spline connector 3 are connected by a pair of clamping ring 4, recess is formed on the outer ring wall of screw 1, recess is formed on the outer wall of spline connector 3, the inner wall of clamping ring 4 is provided with protrusion that can be buckled in the recess of screw 1 and spline connector 3 respectively, to limit screw 1 from separating from spline connector 3.

[0003] According to the above structure and Figure 1 It can be known that half ring is buckled from the outside of screw and spline connector, which will block the path of fastening bolt tightening and separation, so the spline connector needs to be installed first when installing, all fastening bolts are tightened, and then half ring is installed, when installing, a pair of half rings need to be buckled between screw and spline connector and mutually embraced, and then interlocked by another group of bolts, so when disassembling, the bolt group on half ring needs to be removed first, and then the bolt group between spline connector and coupling is disassembled, so the disassembly efficiency is low. CONTENT OF UTILITY MODEL

[0004] In view of the defect that the assembly steps of existing injection molding machine screw and coupling are relatively complex, leading to low disassembly efficiency, the utility model aims at providing a kind of injection molding machine screw that can be quickly installed.

[0005] In order to solve the above technical problems, the utility model solves the problems by the following technical schemes:

[0006] A kind of injection molding machine screw that can be quickly installed, including screw and coupling, quick disassembly and assembly structure is arranged between screw and coupling, quick disassembly and assembly structure includes a pair of clamping ring that can embrace to form circular ring, arranged on the end of screw outer wall close to coupling, key, which is locally clamped with clamping ring and screw, is arranged between clamping ring and screw, and mounting hole is arranged through the end face of clamping ring, mounting hole is evenly provided with a plurality of around circular ring, and bolt, which is connected with coupling and locked, is arranged in mounting hole.

[0007] With the above scheme, when the screw and the shaft coupling are assembled, the key and the snap ring are pre-assembled before the snap ring is installed, and then the key and the snap ring are synchronously installed on the screw. When installing, the key and the key groove on the screw cooperate to have a pre-positioning effect, which can help the operator to quickly find the installation position. When locking, only one set of bolts is needed to lock the screw, simplifying the installation process. When disassembling, only one set of bolts needs to be loosened to unlock the screw. Compared with the prior art, the defect that the bolt on the spline connector cannot be removed until the half-ring structure is removed is omitted, greatly reducing the time required for disassembly. Therefore, the quick disassembly and assembly structure in the present scheme effectively improves the assembly efficiency.

[0008] As a preferred, a assembling structure for further improving the disassembly speed is arranged between the bolt and the shaft coupling, the assembling structure comprises a T-shaped nut matched with the bolt, a guide groove for guiding the T-shaped nut to slide in is arranged on the outer ring wall of the shaft coupling along the radial direction thereof, an opening groove in communication with the mounting hole is arranged on the outer ring wall of the snap ring, and the bolt can enter or disengage from the mounting hole through the opening groove.

[0009] With the above scheme, when disassembling the screw, all bolts need to be completely removed from the shaft coupling in the prior art to remove the spline connector, but in the present scheme, the T-shaped nut can be taken out from the guide groove by operating the large end of the bolt after the bolt is loosened to disengage from the end face of the snap ring, saving the time of tightening the nut. Before installation, the distance between the bolt and the T-shaped nut can be adjusted to be slightly greater than the distance between the guide groove and the end face of the snap ring. After the T-shaped nut is guided into the guide groove, the snap ring and the shaft coupling can be locked by turning a small number of turns. The above effect achieves the purpose of further reducing the assembly time.

[0010] As a preferred, the key comprises a flat key and a pair of half-ring keys, the flat key is arranged along the axial direction of the screw and is clamped between the screw and the snap ring, and the half-ring keys are spliced together to form a ring coaxial with the screw and are clamped between the screw and the snap ring.

[0011] With the above scheme, the main function of the half-ring key is to limit the axial movement of the screw, and the main function of the flat key is to limit the circumferential rotation of the screw and to transmit torque.

[0012] As a preferred, an adjustment distance is left between the snap ring and the shaft coupling for the snap ring to drive the key to approach the shaft coupling during the tightening process of the bolt.

[0013] In actual production, the actual size of the key and the corresponding key groove on the snap ring or the screw rod has a certain deviation from the standard size, if the width of the half-ring key is smaller or the width of the corresponding key groove is larger, a gap will be generated between the half-ring key and the key groove, which will finally act on the screw rod to cause the axial movement of the screw rod, and in the scheme, when the gap is generated, the adjusting gap can be reduced by tightening the bolt, the snap ring drives the half-ring key to move towards the coupling, the half-ring key clamps the screw rod, and the gap is reduced; the adjusting gap reduces the matching precision of the screw rod, the key and the snap ring, reduces the original requirement of the parts on the size precision, and further reduces the machining precision.

[0014] As preferred, a limiting piece is arranged between the coupling and the snap ring to keep the synchronous rotation of the two and to enhance the torque transmission effect, and the limiting piece comprises an end face key arranged between the snap ring and the coupling and locally clamped with the two.

[0015] Compared with the previous scheme, the end face key in the scheme bears the torque from the coupling instead of the bolt, and the possibility of loosening of the bolt under the influence of the torque is avoided.

[0016] As preferred, an insertion slot is arranged on the end face of the coupling for local insertion of the light rod section of the end portion of the screw rod.

[0017] With the above scheme, the screw rod in the scheme directly contacts with the coupling through the insertion slot, when the screw rod is subjected to the action force of radial deflection, the coupling can be used as a main component to bear the action force, compared with the prior art, the matching mode of the screw rod and the coupling in the scheme increases the connection rigidity of the two, the connection is more reliable, and the phenomenon of loosening of the connection part and the reduction of the movement precision caused by the radial deflection of the screw rod can be effectively reduced.

[0018] As preferred, a pad is arranged between the bottom of the insertion slot and the end portion of the light rod section.

[0019] The screw rod and the coupling in the scheme are assembled, the key is pre-assembled with the snap ring before the snap ring is installed, and then the key and the snap ring are synchronously installed on the screw rod, when the key and the key groove on the screw rod are matched, the pre-positioning effect is also achieved, which can help the operator to quickly find the installation position, and only one set of bolts is needed to lock the screw rod during subsequent locking, thereby simplifying the installation process; when disassembling, only one set of bolts needs to be loosened to unlock the screw rod, compared with the prior art, the defect that the bolt on the spline connector can be removed only after the half-ring structure is removed is omitted, and the time required for disassembly is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic view of the prior art in the background art;

[0021] Figure 2 is a schematic view of the internal structure of the screw mounting structure of the injection molding machine according to the embodiment;

[0022] Figure 3 is a partial enlarged view of a in Figure 2

[0023] Figure 4 is a schematic view of the internal structure of the screw mounting structure of the injection molding machine according to the embodiment;

[0024] Figure 5 is a partial enlarged view of b in Figure 4

[0025] Figure 6 is a schematic view of the structure of the screw mounting structure of the injection molding machine according to the embodiment;

[0026] Figure 7 is a partial enlarged view of c in Figure 6

[0027] Figure 8 Figure 7

[0028] The names of the parts referred to by the respective reference numerals in the above drawings are as follows: 1, screw; 2, coupling; 3, spline connector; 4, snap ring; 5, mounting hole; 6, bolt; 7, T nut; 8, guide groove; 9, open slot; 10, flat key; 11, half-ring key; 12, end face key; 13, insertion slot; 14, spacer; 15, first key groove; 16, second key groove; 17, third key groove. DETAILED DESCRIPTION

[0029] The injection molding machine screw fast mounting structure according to the embodiment will be described in further detail below with reference to the accompanying drawings and embodiments.

[0030] Embodiment 1

[0031] The injection molding machine screw fast mounting structure according to the embodiment is shown in Figs. 1 to 17, and comprises a screw 1 and a coupling 2, with a quick dismounting structure provided between the screw 1 and the coupling 2. An insertion slot 13 is formed in the end face of the coupling 2 for partially inserting the light rod section of the end portion of the screw 1, with a spacer 14 provided between the bottom of the insertion slot 13 and the end portion of the light rod section. Figure 2 7 Figure 3 5 ​​​​​​​​As shown, the quick disassembly and assembly structure includes a pair of clamping rings 4 capable of clamping to form a ring, which are arranged on the outer wall of the screw rod 1 near one end of the coupling 2, keys are arranged between the clamping ring 4 and the screw rod 1 and locally clamped with both, the keys include a flat key 10 and a pair of half-ring keys 11, the flat key 10 is arranged axially along the screw rod 1 and is clamped between the screw rod 1 and the clamping ring 4, in this embodiment, the outer ring wall of the screw rod 1 and the inner wall of the clamping ring 4 are both provided with first key grooves 15 for clamping the flat key 10 along the axial direction of the screw rod 1, the half-ring keys 11 are mutually spliced to form a ring coaxial with the screw rod 1 and are clamped between the screw rod 1 and the clamping ring 4, in this embodiment, the outer ring wall of the screw rod 1 and the inner wall of the clamping ring 4 are both provided with second key grooves 16 for clamping the half-ring keys 11.

[0032] The mounting holes 5 are provided through the two end faces of the clamping ring 4, the mounting holes 5 are uniformly provided with a plurality of mounting holes 5 around the ring, the mounting holes 5 are provided with bolts 6 connected with and locked with the coupling 2, the bolts 6 can drive the clamping ring 4 to approach the coupling 2 during tightening, and the clamping ring 4 and the coupling 2 are left with an adjustment interval for the clamping ring 4 to drive the half-ring keys 11 to approach the coupling 2 during tightening of the bolts 6.

[0033] The limiting member is arranged between the coupling 2 and the clamping ring 4 and keeps both synchronous rotation and enhances the torque transmission effect, according to Figure 3 、 5 , 8, the limiting member includes an end face key 12 arranged between the clamping ring 4 and the coupling 2 and locally clamped with both, in this embodiment, the end faces of the clamping ring 4 and the coupling 2 are both recessed to provide third key grooves 17 for clamping the end face key 12.

[0034] In combination with the above structure, referring to Figures 2 to 8 It can be known that when the screw rod 1 and the coupling 2 are assembled in this embodiment, the keys are pre-assembled with the clamping ring 4 before the clamping ring 4 is installed, and then the clamping ring 4 is synchronously installed on the screw rod 1, during installation, the keys and the key grooves on the screw rod 1 are matched to have a predetermined positioning effect, which can help the operator to quickly find the installation position, and only one set of bolts is needed to lock the screw rod 1 during subsequent locking, which simplifies the installation process; when disassembling, only one set of bolts needs to be loosened to unlock the screw rod 1, which omits the defect that the half-ring structure needs to be removed first before the bolts 6 on the spline connector 3 can be removed, greatly reducing the time required for disassembly, so the quick disassembly and assembly structure in this scheme effectively improves the assembly efficiency;

[0035] Embodiment 2

[0036] Based on the basis of Embodiment 1, this embodiment further limits a wiring terminal, the bolts 6 and the coupling 2 are provided with an assembly structure for further improving the disassembly and assembly speed, according to Figure 3 、 5As shown, the assembly structure comprises a T-shaped nut 7 matched with the bolt 6, a guide groove 8 is formed on the outer ring wall of the coupling 2 along the radial direction for guiding the T-shaped nut 7 to slide in, and an open slot 9 is formed on the outer ring wall of the snap ring 4 and communicated with the mounting hole 5, so that the bolt 6 can enter or disengage from the mounting hole 5 through the open slot 9.

[0037] In combination with the above structure, reference is made to Figures 2 to 8 As shown, in the embodiment, only the bolt 6 is loosened to disengage from the end surface of the snap ring 4, and the T-shaped nut 7 can be taken out from the guide groove 8 by operating the big end of the bolt 6, so that the time for tightening the nut is saved; before installation, the distance between the bolt 6 and the T-shaped nut 7 can be adjusted to be slightly greater than the distance between the guide groove 8 and the end surface of the snap ring 4, and after the T-shaped nut 7 is guided into the guide groove 8, the snap ring 4 and the coupling 2 can be locked by turning a small number of turns, and the above effect achieves the purpose of further reducing the assembly time.

[0038] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A fast-mountable injection-moulding machine screw comprising a screw (1) and a coupling (2), characterised in that: The quick dismounting structure is arranged between the screw rod (1) and the coupling (2), and comprises a pair of clamping rings (4) arranged on one end of the outer wall of the screw rod (1) near the coupling (2) and capable of being clamped to form a ring, a key arranged between the clamping ring (4) and the screw rod (1) and locally clamped with both, and mounting holes (5) arranged through both end faces of the clamping ring (4), a plurality of the mounting holes (5) being uniformly arranged around the ring in the circumferential direction, and a bolt (6) being arranged in the mounting hole (5) and connected and locked with the coupling (2).

2. A fast-mountable injection molding machine screw according to claim 1, characterized in that: The assembly structure for further improving the dismounting speed is arranged between the bolt (6) and the coupling (2), and comprises a T-shaped nut (7) matched with the bolt (6), a guide groove (8) provided on the outer ring wall of the coupling (2) and used for guiding the T-shaped nut (7) to slide in, and an open slot (9) provided on the outer ring wall of the clamping ring (4) and communicated with the mounting hole (5), the bolt (6) being capable of entering or separating from the mounting hole (5) through the open slot (9).

3. A fast-mountable injection molding machine screw as defined in claim 1, characterized in that: The key comprises a flat key (10) and a pair of half-ring keys (11), the flat key (10) being arranged in the axial direction of the screw rod (1) and clamped between the screw rod (1) and the clamping ring (4), and the half-ring keys (11) being clamped together to form a ring coaxial with the screw rod (1) and clamped between the screw rod (1) and the clamping ring (4).

4. A fast-mountable injection molding machine screw as defined in claim 1, characterized in that: An adjusting interval is left between the clamping ring (4) and the coupling (2) for the clamping ring (4) to drive the key to approach the coupling (2) during the tightening of the bolt (6).

5. A fast-mountable injection molding machine screw as defined in claim 1, wherein: The limiting member is arranged between the coupling (2) and the clamping ring (4) and used for keeping synchronous rotation of the coupling (2) and the clamping ring (4) and enhancing the torque transmission effect, and the limiting member comprises an end face key (12) arranged between the coupling (2) and the clamping ring (4) and locally clamped with both.

6. A fast-mountable injection molding machine screw according to any one of claims 1 to 5, characterized in that: An insertion slot (13) is provided on the end face of the coupling (2) and used for locally inserting a light rod section of the end portion of the screw rod (1).

7. A fast-mountable injection molding machine screw as defined in claim 5, characterized in that: A pad (14) is arranged between the bottom of the insertion slot (13) and the end portion of the light rod section.

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