Transmission shaft assembly of injection molding machine
By introducing a torque-resistant device into the drive shaft assembly of the injection molding machine, the loosening or damage caused by the increase in torque when the injection molding screw is blocked is solved, and greater torque tolerance and stability of power output are achieved.
Patent Information
- Application Number
- CN202421162826.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-05-27
AI Technical Summary
When the injection molding screw of the injection molding machine drive shaft assembly is blocked, the torque the coupling bears increases, which can easily lead to loosening or damage and lose its transmission capacity.
A transmission shaft assembly of an injection molding machine including a transmission connecting rod, a transmission coupling and a torque-resistant device is designed. The torque-resistant device consists of a transmission shaft sleeve, a fixed flange, a metal gasket, a torque-resistant device, etc., and is extended torsion resistance. Bolts and metal connecting blocks share torque, enhancing the coupling's torque resistance.
It effectively increases the torque resistance of the transmission coupling, avoids loosening or damage caused by increasing torque, and ensures the stability of power output and the continuous transmission.
Smart Images
Figure CN222229356U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field related to injection molding machines, and in particular relates to a transmission shaft component of an injection molding machine. Background Art
[0002] The drive shaft components of the injection molding machine mainly include the injection screw, coupling, drive shaft and bearing. Among them, the injection screw is the key component of the injection molding machine, responsible for heating, melting and injecting plastic particles into the mold for molding. The injection screw is connected to the motor through the coupling and transmits torque and rotational motion through the drive shaft. The bearing supports and fixes the injection screw, reduces friction and vibration, and ensures its stable rotation. These components together constitute the transmission system of the injection molding machine, ensuring stability and efficiency during the plastic processing process.
[0003] However, when the injection molding machine drive shaft assembly is driving the injection molding screw, the injection molding motor needs to drive the reducer. After the reducer reduces the input power, it will drive the injection molding screw through the output shaft and the coupling. Because the output shaft of the reducer directly drives the injection molding screw through the coupling, once the injection molding screw is blocked by an obstruction during injection molding, the output shaft will be required to provide greater power to the injection molding screw through the coupling. The increased power output of the transmission will increase the torque borne by the coupling, and the increase in torque will easily cause the coupling to loosen or even be damaged, causing the coupling to lose its transmission ability. Utility Model Content
[0004] The purpose of the utility model is to provide an injection molding machine transmission shaft assembly to solve the problem that the output shaft of the reducer proposed in the above background technology directly drives the injection molding screw through a coupling. Once the injection molding screw is blocked by an obstruction during injection molding, the output shaft will be required to provide greater power to the injection molding screw through a coupling. The increased power output of the transmission will increase the torque borne by the coupling, and the increase in torque will easily cause the coupling to loosen or even be damaged.
[0005] To achieve the above object, the utility model provides the following technical solutions: an injection molding machine transmission shaft assembly, comprising a transmission connecting rod and a transmission coupling arranged outside the right end of the transmission connecting rod, wherein the transmission coupling is composed of a transmission sleeve A, a fixing flange A, a fixing flange B, a transmission sleeve B, a fixing bolt and a metal gasket;
[0006] The transmission sleeve A is sleeved on the outside of the transmission connecting rod, a fixed flange A is provided at the right end of the transmission sleeve A, a fixed flange B is provided on the right side of the fixed flange A, a metal gasket is provided between the fixed flange A and the fixed flange B, the fixed flange A and the fixed flange B and the metal gasket are fixedly connected by a plurality of fixing bolts, a transmission sleeve B is provided at the right end of the fixed flange B, and an anti-torque device is externally connected between the transmission sleeve A and the transmission sleeve B;
[0007] The anti-torque device includes an inner hexagon anti-slip ring A, an outer hexagon anti-slip tube A, a metal retaining ring A, a metal retaining ring B, an outer hexagon anti-slip tube B and an inner hexagon anti-slip ring B. The metal retaining ring A and the metal retaining ring B are respectively sleeved on the outside of the transmission sleeve A and the transmission sleeve B. The metal retaining ring A and the metal retaining ring B are respectively close to the left end of the transmission sleeve A and the right end of the transmission sleeve B. The left end of the metal retaining ring A is provided with an outer hexagon anti-slip tube A, and the right end of the metal retaining ring B is provided with an outer hexagon anti-slip tube B. The outer part of the outer hexagon anti-slip tube A is sleeved with the inner hexagon anti-slip ring A, and the outer part of the outer hexagon anti-slip tube B is sleeved with the inner hexagon anti-slip ring B.
[0008] Preferably, the outer shapes of the outer hexagonal anti-slip tube A and the outer hexagonal anti-slip tube B are both regular hexagons, the inner hole shapes of the inner hexagonal anti-slip ring A and the inner hexagonal anti-slip ring B are both regular hexagons, and the inner hexagonal anti-slip ring A and the inner hexagonal anti-slip ring B cannot rotate after being respectively sleeved on the outside of the outer hexagonal anti-slip tube A and the outer hexagonal anti-slip tube B.
[0009] Preferably, the metal retaining ring A and the outer hexagonal anti-detachment tube A are fixedly connected to the transmission sleeve A by welding, and the metal retaining ring B and the outer hexagonal anti-detachment tube B are fixedly connected to the transmission sleeve B by welding, and the outer diameters of the metal retaining ring A and the metal retaining ring B are larger than the inner hole diameters of the inner hexagonal anti-detachment ring A and the inner hexagonal anti-detachment ring B.
[0010] Preferably, the anti-torque device also includes a metal connecting block A, a metal connecting block B and an extended anti-torque bolt. The metal connecting block A is welded at both ends of the hexagonal anti-detachment ring A, and the metal connecting block B is welded at both ends of the hexagonal anti-detachment ring B. An extended anti-torque bolt is connected between the metal connecting block A and the metal connecting block B.
[0011] Preferably, the metal connecting block A and the hexagonal anti-detachment ring A are of equal thickness, the metal connecting block B and the hexagonal anti-detachment ring B are of equal thickness, the extended anti-torque bolt is mainly composed of a bolt screw and nuts on the outside of both ends, the two nuts are respectively located at the left end of the metal connecting block A and the right end of the metal connecting block B, and after the two nuts are tightened on the outside of the bolt screw, they are tightly against the outer wall of the left end of the metal connecting block A and the outer wall of the right end of the metal connecting block B.
[0012] Preferably, the front and rear inner walls of the transmission sleeve A and the transmission sleeve B are both provided with pin grooves, the front end outer wall of the transmission connecting rod is provided with a transmission pin, and the transmission pin is inserted into the pin groove inside the front end of the transmission sleeve A.
[0013] Preferably, a polished rod is provided at the left end of the transmission connecting rod, an injection molding screw is provided at the left end of the polished rod, and spiral injection molding threads are provided on the circular outer wall of the injection molding screw.
[0014] Preferably, the injection molding screw and the spiral injection molding screw thread, the polished rod and the transmission connecting rod are made of a whole metal rod by turning, and an injection molding head is arranged at the left end of the injection molding screw.
[0015] Compared with the prior art, the utility model provides an injection molding machine transmission shaft assembly having the following
[0016] Beneficial effects:
[0017] The utility model adds a novel anti-torque device to the transmission coupling of the injection molding machine transmission shaft assembly. The anti-torque device can ensure the normal transmission of the transmission coupling without affecting the normal connection between the transmission coupling and the transmission connecting rod and the output shaft. At the same time, it can also increase the anti-torque capacity of the transmission coupling, so that the transmission coupling can withstand a larger torsional torque to transmit the transmission connecting rod, thereby increasing the power output capacity of the injection molding screw. After increasing the power output of the transmission coupling, the anti-torque device can ensure that the transmission coupling will not be deformed or damaged, so as to ensure that the power can be normally output through the transmission coupling. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 The utility model is a schematic diagram of the planar structure of a transmission shaft assembly of an injection molding machine.
[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the transmission coupling of the utility model.
[0020] Figure 3 It is a schematic diagram of the planar structure of the anti-torque device of the utility model.
[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the anti-torque device of the utility model.
[0022] In the figure: 1. Injection molding head; 2. Injection molding screw; 3. Spiral injection molding screw thread; 4. Polish rod; 5. Transmission connecting rod; 6. Transmission coupling; 7. Anti-torque device; 8. Transmission pin; 61. Transmission sleeve A; 62. Fixing flange A; 63. Fixing flange B; 64. Transmission sleeve B; 65. Pin groove; 66. Fixing bolt; 67. Metal gasket; 70. Metal connecting block A; 71. Internal hexagon anti-dropping collar A; 72. External hexagon anti-dropping cylinder A; 73. Metal retaining ring A; 74. Metal retaining ring B; 75. External hexagon anti-dropping cylinder B; 76. Internal hexagon anti-dropping collar B; 77. Metal connecting block B; 78. Extended anti-torque bolt. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] The utility model provides Figure 1-4The drive shaft assembly of an injection molding machine shown in the figure includes a drive connecting rod 5 and a drive coupling 6 arranged outside the right end of the drive connecting rod 5. The drive coupling 6 is composed of a drive sleeve A61, a fixed flange A62, a fixed flange B63, a drive sleeve B64, a fixing bolt 66 and a metal gasket 67. The drive sleeve A61 is sleeved on the outside of the drive connecting rod 5. A fixed flange A62 is arranged on the right end of the drive sleeve A61. A fixed flange B63 is arranged on the right side of the fixed flange A62. A metal gasket 67 is arranged between the fixed flange A62 and the fixed flange B63. The fixed flange A62, the fixed flange B63 and the metal gasket are connected to each other. 67 are fixedly connected by multiple fixing bolts 66, a transmission sleeve B64 is arranged at the right end of the fixing flange B63, pin grooves 65 are arranged on the inner walls of the front and rear sides of the transmission sleeve A61 and the transmission sleeve B64, a transmission pin 8 is arranged on the outer wall of the front end of the transmission connecting rod 5, and the transmission pin 8 is inserted into the pin groove 65 inside the front end of the transmission sleeve A61, a polished rod 4 is arranged at the left end of the transmission connecting rod 5, an injection molding screw 2 is arranged at the left end of the polished rod 4, a spiral injection molding screw 3 is arranged on the circular outer wall of the injection molding screw 2, the injection molding screw 2 and the spiral injection molding screw 3, the polished rod 4 and the transmission connecting rod 5 are made of a whole metal rod by turning, and the injection molding screw 2 The left end of the injection molding machine is provided with an injection molding head 1. When assembling and using the injection molding machine transmission shaft group, the injection molding head 1 needs to be installed to the left end of the injection molding screw 2 first, so that the injection molding head 1 can be firmly fixed to the left end of the injection molding screw 2, and then the injection molding screw 2 and the injection molding head 1 need to be inserted into the injection molding barrel of the injection molding machine. After being fully inserted, the transmission connecting rod 5 is exposed outside the injection molding barrel. At this time, the transmission connecting rod 5 needs to be connected to the output shaft of the reducer through the transmission coupling 6. Specifically, the transmission shaft sleeve A61 and the transmission shaft sleeve B64 need to be respectively sleeved to the outside of the transmission connecting rod 5 and the outside of the output shaft, and then the metal gasket needs to be 67 is placed before the connecting flange A and the connecting flange B, and the screw holes on the metal gasket 67 need to be kept coincident with the internal screw holes of the connecting flange A and the connecting flange B, and then a plurality of fixing bolts 66 are needed to fasten the connecting flange A, the connecting flange B and the metal gasket 67, and then the injection molding motor needs to be started to test the transmission effect of the transmission shaft. After the injection molding motor is started, it will be decelerated by the reducer, and the reducer will drive the transmission sleeve B64 to rotate through the output shaft, and the transmission sleeve B64 will drive the transmission sleeve A61 to rotate, so that the transmission sleeve A61 drives the entire injection molding screw 2 to rotate, thereby achieving the purpose of transmission.
[0025] like Figure 1 , Figure 3 and Figure 4As shown, the transmission shaft sleeve A61 and the transmission shaft sleeve B64 are externally connected with an anti-torque device 7, and the anti-torque device 7 includes an inner hexagonal anti-slip ring A71, an outer hexagonal anti-slip cylinder A72, a metal retaining ring A73, a metal retaining ring B74, an outer hexagonal anti-slip cylinder B75 and an inner hexagonal anti-slip ring B76. The metal retaining ring A73 and the metal retaining ring B74 are respectively sleeved on the outside of the transmission shaft sleeve A61 and the transmission shaft sleeve B64. The metal retaining ring A73 and the metal retaining ring B74 are respectively close to the left end of the transmission shaft sleeve A61 and the right end of the transmission shaft sleeve B64. The left end of the metal retaining ring A73 is provided with an outer hexagonal anti-slip cylinder A72, an outer hexagonal anti-dropout cylinder B75 is arranged at the right end of the metal retaining ring B74, the outer part of the outer hexagonal anti-dropout cylinder A72 is sleeved with an inner hexagonal anti-dropout ring A71, the outer part of the outer hexagonal anti-dropout cylinder B75 is sleeved with an inner hexagonal anti-dropout ring B76, the outer shapes of the outer hexagonal anti-dropout cylinder A72 and the outer hexagonal anti-dropout cylinder B75 are both regular hexagons, the inner hole shapes of the inner hexagonal anti-dropout ring A71 and the inner hexagonal anti-dropout ring B76 are both regular hexagons, and the inner hexagonal anti-dropout ring A71 and the inner hexagonal anti-dropout ring B76 cannot rotate after being respectively sleeved onto the outer parts of the outer hexagonal anti-dropout cylinder A72 and the outer hexagonal anti-dropout cylinder B75.
[0026] like Figure 1 , Figure 3 and Figure 4 As shown, the metal retaining ring A73 and the outer hexagonal anti-detachment cylinder A72 are fixedly connected to the transmission shaft sleeve A61 by welding, the metal retaining ring B74 and the outer hexagonal anti-detachment cylinder B75 are fixedly connected to the transmission shaft sleeve B64 by welding, the outer diameters of the metal retaining ring A73 and the metal retaining ring B74 are larger than the inner hole diameters of the inner hexagonal anti-detachment ring A71 and the inner hexagonal anti-detachment ring B76, the anti-torque device 7 also includes a metal connecting block A70, a metal connecting block B77 and an extended anti-torque bolt 78, the upper and lower ends of the inner hexagonal anti-detachment ring A71 are welded with metal connecting blocks A70, and the upper and lower ends of the inner hexagonal anti-detachment ring B76 are welded with metal connecting blocks A70. A metal connecting block B77 is welded, and an extended anti-torque bolt 78 is connected between the metal connecting block A70 and the metal connecting block B77. The metal connecting block A70 and the hexagonal anti-dropout ring A71 are of equal thickness, and the metal connecting block B77 and the hexagonal anti-dropout ring B76 are of equal thickness. The extended anti-torque bolt 78 is mainly composed of a bolt screw and nuts on the outside of both ends. The two nuts are respectively located at the left end of the metal connecting block A70 and the right end of the metal connecting block B77, and the two nuts are tightly pressed against the outer wall of the left end of the metal connecting block A70 and the outer wall of the right end of the metal connecting block B77 after being tightened on the outside of the bolt screw.
[0027] like Figure 1 , Figure 3 and Figure 4As shown, after the transmission coupling 6 connects the output shaft of the reducer with the transmission connecting shaft, the output shaft of the reducer can drive the injection screw 2 to rotate through the transmission coupling 6. In order to increase the anti-torque effect of the transmission coupling 6, it is necessary to install the anti-torque device 7 on the transmission coupling 6. During the specific installation, it is necessary to sleeve the inner hexagonal anti-detachment ring A71 onto the outside of the outer hexagonal anti-detachment cylinder A72, and sleeve the inner hexagonal anti-detachment ring B76 onto the outside of the outer hexagonal anti-detachment cylinder B75. Because the outer hexagonal anti-detachment cylinder A72 and the outer hexagonal anti-detachment cylinder B75 are respectively fixed on the outside of the transmission shaft sleeve A61 and the transmission shaft sleeve B64, the inner hexagonal anti-detachment ring A71 and the inner hexagonal anti-detachment ring B76 can be respectively fixed on the transmission shaft sleeve A61 and the transmission shaft sleeve B64. Then, it is necessary to use the extended anti-torque bolt 78 to tighten the metal connecting block A70 on the inner hexagonal anti-detachment ring A71. It is connected and fixed with the metal connecting block B77 on the hexagonal anti-detachment ring B76. When the extended anti-torque bolt 78 is tightened, the metal connecting block A70 and the metal connecting block B77 will be pulled toward the center of the transmission coupling 6, so that the hexagonal anti-detachment ring A71 is tightly against the metal retaining ring A73, and the hexagonal anti-detachment ring B76 is tightly against the metal retaining ring B74. In this way, the entire device will be firmly fixed on the transmission sleeve A61 and the transmission sleeve B64, and the anti-torque device 7 will form an anti-torque frame outside the transmission sleeve A61 and the transmission sleeve B64. When the transmission sleeve B64 transmits the transmission sleeve A61, the anti-torque device 7 will rotate synchronously for transmission, and the torque generated during transmission will be shared by the entire anti-torque device 7, so that the transmission coupling 6 can withstand a larger torque without deformation or damage.
[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A drive shaft assembly for an injection molding machine, comprising a drive connecting rod (5) and a drive coupling (6) arranged outside the right end of the drive connecting rod (5), wherein the drive coupling (6) is composed of a drive sleeve A (61), a fixing flange A (62), a fixing flange B (63), a drive sleeve B (64), a fixing bolt (66) and a metal gasket (67); The transmission sleeve A (61) is sleeved on the outside of the transmission connecting rod (5), a fixing flange A (62) is arranged at the right end of the transmission sleeve A (61), a fixing flange B (63) is arranged on the right side of the fixing flange A (62), a metal gasket (67) is arranged between the fixing flange A (62) and the fixing flange B (63), the fixing flange A (62) and the fixing flange B (63) and the metal gasket (67) are fixedly connected by a plurality of fixing bolts (66), a transmission sleeve B (64) is arranged at the right end of the fixing flange B (63), and the characteristics are: The transmission sleeve A (61) and the transmission sleeve B (64) are externally connected with an anti-torque device (7); The anti-torque device (7) comprises an inner hexagonal anti-slip collar A (71), an outer hexagonal anti-slip sleeve A (72), a metal retaining ring A (73), a metal retaining ring B (74), an outer hexagonal anti-slip sleeve B (75) and an inner hexagonal anti-slip collar B (76). The metal retaining ring A (73) and the metal retaining ring B (74) are respectively sleeved on the outside of the transmission shaft sleeve A (61) and the transmission shaft sleeve B (64). The metal retaining ring A (73) and the metal retaining ring B (74) are respectively sleeved on the outside of the transmission shaft sleeve A (61) and the transmission shaft sleeve B (64). ) are respectively close to the left end of the transmission shaft sleeve A (61) and the right end of the transmission shaft sleeve B (64); the left end of the metal retaining ring A (73) is provided with an external hexagonal anti-slip sleeve A (72); the right end of the metal retaining ring B (74) is provided with an external hexagonal anti-slip sleeve B (75); the outer part of the external hexagonal anti-slip sleeve A (72) is sleeved with an internal hexagonal anti-slip sleeve A (71); the outer part of the external hexagonal anti-slip sleeve B (75) is sleeved with an internal hexagonal anti-slip sleeve B (76).
2. The drive shaft assembly of an injection molding machine according to claim 1, characterized in that: The outer shapes of the outer hexagonal anti-slip cylinder A (72) and the outer hexagonal anti-slip cylinder B (75) are both regular hexagons, and the inner hole shapes of the inner hexagonal anti-slip ring A (71) and the inner hexagonal anti-slip ring B (76) are both regular hexagons. After the inner hexagonal anti-slip ring A (71) and the inner hexagonal anti-slip ring B (76) are respectively sleeved onto the outer sides of the outer hexagonal anti-slip cylinder A (72) and the outer hexagonal anti-slip cylinder B (75), they cannot rotate.
3. The drive shaft assembly of an injection molding machine according to claim 2, characterized in that: The metal retaining ring A (73) and the outer hexagonal anti-slip sleeve A (72) are both fixedly connected to the transmission shaft sleeve A (61) by welding, and the metal retaining ring B (74) and the outer hexagonal anti-slip sleeve B (75) are both fixedly connected to the transmission shaft sleeve B (64) by welding. The outer diameters of the metal retaining ring A (73) and the metal retaining ring B (74) are both larger than the inner hole diameters of the inner hexagonal anti-slip sleeve A (71) and the inner hexagonal anti-slip sleeve B (76).
4. The drive shaft assembly of an injection molding machine according to claim 3, characterized in that: The anti-torque device (7) further comprises a metal connection block A (70), a metal connection block B (77) and an extended anti-torque bolt (78); the metal connection blocks A (70) are welded to the upper and lower ends of the hexagonal anti-detachment collar A (71); the metal connection blocks B (77) are welded to the upper and lower ends of the hexagonal anti-detachment collar B (76); and an extended anti-torque bolt (78) is connected between the metal connection block A (70) and the metal connection block B (77).
5. The drive shaft assembly of an injection molding machine according to claim 4, characterized in that: The metal connection block A (70) and the hexagon socket anti-dropout collar A (71) have the same thickness, and the metal connection block B (77) and the hexagon socket anti-dropout collar B (76) have the same thickness. The extended anti-torque bolt (78) is mainly composed of a bolt screw and nuts at both ends. The two nuts are respectively located at the left end of the metal connection block A (70) and the right end of the metal connection block B (77). After the two nuts are tightened outside the bolt screw, they are tightly pressed against the outer wall of the left end of the metal connection block A (70) and the outer wall of the right end of the metal connection block B (77).
6. The drive shaft assembly of an injection molding machine according to claim 1, characterized in that: The front and rear inner walls of the transmission shaft sleeve A (61) and the transmission shaft sleeve B (64) are both provided with pin grooves (65), and the front outer wall of the transmission connecting rod (5) is provided with a transmission pin (8), and the transmission pin (8) is inserted into the pin groove (65) inside the front end of the transmission shaft sleeve A (61).
7. The drive shaft assembly for an injection molding machine according to claim 1, characterized in that: A polished rod (4) is arranged at the left end of the transmission connecting rod (5), an injection molding screw (2) is arranged at the left end of the polished rod (4), and a spiral injection molding screw thread (3) is arranged on the circular outer wall of the injection molding screw (2).
8. The drive shaft assembly of an injection molding machine according to claim 7, characterized in that: The injection molding screw (2), the spiral injection molding thread (3), the polished rod (4) and the transmission connecting rod (5) are made of a whole metal rod by turning, and the left end of the injection molding screw (2) is provided with an injection molding head (1).