Brake mechanism of injection molding machine

Abstract

The utility model relates to the field of injection molding machines, and discloses a band-type brake mechanism of an injection molding machine, which comprises two groups of cohesion nut bodies, each cohesion nut body comprises an inner half nut and an outer half nut, a staggered guide part is arranged between the two groups of cohesion nut bodies, and the staggered guide part comprises a guide rod arranged on each outer half nut. A driving part for driving the two inner half nuts to be close to or away from each other is arranged between the two inner half nuts, the driving part comprises a driving motor, a lead screw connected with the driving motor, a nut arranged on the lead screw and a matching sleeve with the two ends fixed to the nut and the inner half nuts respectively, an avoiding cavity is formed in the matching sleeve, and the driving motor is arranged on the mounting base; the installation base is fixedly matched with the guide rod on the outer half nut close to the nut through a fixing component and is matched with the guide rod on the inner half nut close to the nut in an inserted connection mode, the arranged driving motor can drive the two sets of cohesion nut bodies to mutually cohede or open through the staggered guide component, and the reset precision of the driving motor is higher than that of an oil cylinder.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machines, and in particular to a brake mechanism for injection molding machines. Background Technology

[0002] Chinese Patent Publication No. CN221660001U discloses a brake structure, including two sets of clamping nut bodies. Each clamping nut body includes an inner half-nut disposed opposite to the others and an outer half-nut that cooperates with the inner half-nut. A guide drive mechanism is provided between the two sets of clamping nut bodies to drive the inner and outer half-nuts of the two sets of clamping nut bodies to open or close synchronously. The guide drive mechanism includes a mounting base integrally and horizontally protruding between the two sets of inner half-nuts on the injection molding machine template, a guide post detachably disposed on the mounting base, and a retaining block that guides and slides on the guide post. A retaining block is hinged to both sides. A connecting rod is hinged to one end opposite to the two inner half nuts. An interlaced guide component is provided between the two sets of cooperating nut bodies, which causes the two outer half nuts to tend to move away from each other when the two inner half nuts move closer or further away. A driving component is provided between the two inner half nuts to drive them to move closer or further away. The interlaced guide component includes at least one guide rod arranged parallel to each outer half nut. The guide rod passes through the inner half nut that mates with the outer half nut and is fixedly connected to the other inner half nut. The driving component includes a hydraulic cylinder. The fixed end of the hydraulic cylinder is connected to one inner half nut, and the telescopic end of the hydraulic cylinder is connected to the other inner half nut.

[0003] In the above structure, when the extended end of the hydraulic cylinder retracts, it will drive the inner half nut connected to the extension rod to move through the extension rod. At this time, the inner half nut will pull the outer half nut in another set of clamping nut bodies to move through the set guide rod. At the same time, when the extended end of the hydraulic cylinder pushes the extension rod, the extension rod will also apply a reaction force to the hydraulic cylinder. At this time, the inner half nut connected to the fixed end of the hydraulic cylinder will move due to the reaction force applied by the extension rod. When this inner plate nut moves, it will drive the outer half nut in another set of clamping nuts to move through the guide rod, thereby realizing the mutual opening of the inner half nut and outer half nut in the two sets of clamping nut bodies; the mutual clamping of the two sets of clamping nut bodies is reasonable.

[0004] The above structure suffers from low precision of the hydraulic cylinder, resulting in reduced reset accuracy when the two sets of clamping nuts are reset. Furthermore, the hydraulic cylinder is prone to oil leakage during use, and its long cycle affects the operator's working environment and production efficiency. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies, such as low precision of the hydraulic cylinder leading to reduced reset accuracy of the two sets of clamping nuts, easy oil leakage during use, and long cylinder movement cycle affecting the operator's working environment and production efficiency. It provides a brake mechanism for injection molding machines that improves the clamping accuracy of the brake mechanism.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A brake mechanism for an injection molding machine includes two sets of clamping nut bodies located on the injection molding machine template. Each clamping nut body includes an inner half-nut disposed opposite to each other and an outer half-nut that mates with the inner half-nut. An interleaved guide component is provided between the two sets of clamping nut bodies, causing the two outer half-nuts to tend to move away from or towards each other when the two inner half-nuts move closer or further apart. The interleaved guide component includes at least one guide rod disposed parallel to each outer half-nut. The guide rod passes through an inner half-nut that mates with that outer half-nut and is fixedly connected to another inner half-nut. A clamping mechanism is provided between the two inner half-nuts. The driving component that drives the two components to move closer or further apart includes a drive motor, a lead screw, and a lead nut. The lead nut is fixed to a mating sleeve, which is fixed to the end of an inner half nut away from the outer half nut it mates with. The drive motor is mounted on a mounting base. The mounting base and the guide rod on the outer half nut near the lead nut are fixedly mated by a fixing component and are guided and inserted into the guide rod on the inner half nut near the lead nut. The rotation of the lead screw is controlled by the drive motor, and the end of the lead screw away from the drive motor mates with the lead nut. The mating sleeve has a clearance cavity for partial insertion of the end of the lead screw that passes through the lead nut.

[0008] Using the above scheme, the drive motor can drive the lead screw connected to it to rotate. When the lead screw rotates, the interlaced wire components can drive the two sets of clamping nut bodies to move closer to each other and clamp together or move further apart and open up. Compared with the oil cylinder, the motor has higher reset accuracy, shorter motion cycle, and can reduce the probability of affecting the operator's working environment due to oil leakage.

[0009] Preferably, the fixing component includes a fixing ring disposed on the mounting base, and the fixing ring is fixedly disposed on the outer wall of the guide rod.

[0010] Using the above scheme, the fixed ring can fix the guide rod to the mounting base. When the drive motor drives the inner half nut connected to the mating sleeve, because the guide rod on this inner half nut is inserted and mated with the mounting base, this inner half nut will drive the outer half nut in the other set of clamping nut bodies to move together through the guide rod. At the same time, when the drive motor drives the inner half nut connected to the mating sleeve, the inner half nut will also exert a reaction force on the drive motor. Since the drive motor is fixed on the mounting base, and the mounting base is fixedly connected to the guide rod through the fixed ring, when the drive motor moves under the reaction force, it will drive the other two inner half nuts and outer half nuts to move, thereby realizing the mutual opening of the two sets of clamping nut bodies; the two sets of clamping nut bodies clamp each other tightly.

[0011] Preferably, the lead screw is connected to the output shaft of the drive motor via a coupling.

[0012] Using the above solution, the lead screw and the motor output shaft can be connected by a coupling, so that the motor output shaft can drive the lead screw to rotate together.

[0013] Preferably, the lead screw is connected to the output shaft of the drive motor via a worm gear jack.

[0014] Using the above solution, the connection between the lead screw and the motor output shaft can also be achieved through the worm gear jack, so that the motor output shaft can drive the lead screw to rotate together.

[0015] This utility model has significant technical effects due to the adoption of the above technical solutions: the drive motor can drive the lead screw connected to it to rotate, and when the lead screw rotates, the two sets of clamping nut bodies can be driven to move closer to each other or move further apart through the interlaced wire components. Compared with the oil cylinder, the motor has higher reset accuracy, shorter motion cycle, and can reduce the probability of affecting the operator's working environment due to oil leakage. Attached Figure Description

[0016] Figure 1 This is an isometric view of the brake structure of an injection molding machine in Embodiment 1;

[0017] Figure 2 This is an isometric view of the brake structure of an injection molding machine in Embodiment 1;

[0018] Figure 3 This is an isometric view of the brake structure of an injection molding machine in Embodiment 2.

[0019] The parts referred to by the numbers in the above attached figures are as follows: 1. Engaging nut body; 101. Inner half nut; 102. Outer half nut; 2. Drive motor; 3. Lead screw; 4. Coupling; 5. Threaded nut; 6. Mounting base; 7. Guide rod; 8. Retaining ring; 9. Worm gear jack; 10. Mating sleeve. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0021] Example 1

[0022] A brake mechanism for an injection molding machine, reference Figures 1-2 The system includes two sets of clamping nut bodies 1 located on the injection molding machine template. Each clamping nut body 1 includes inner half-nuts 101 arranged opposite each other and outer half-nuts 102 that cooperate with the inner half-nuts 101. Between the two sets of clamping nut bodies 1, there is an interlaced guide component that causes the two outer half-nuts 102 to tend to move away from or towards each other when the two inner half-nuts 101 move closer or further away. The interlaced guide component includes at least one guide rod 7 arranged parallel to each outer half-nut 102. The guide rod 7 passes through the inner half-nut 101 that cooperates with the outer half-nut 102 and is fixedly connected to the other inner half-nut 101. Between the two inner half-nuts 101, there is a mechanism for driving the two to move away from each other. The driving components, which are close to or far apart, include a drive motor 2, a lead screw 3, and a lead nut 5. The lead nut 5 is fixed on a mating sleeve 10. The mating sleeve 10 is fixed to the end of an inner half nut 101 away from the outer half nut 102 that it mates with. The drive motor 2 is mounted on a mounting base 6. The mounting base 6 is fixedly engaged with a guide rod 7 on the outer half nut 102 near the lead nut 5 through a fixing component and is guided and inserted into the guide rod 7 on the inner half nut 101 near the lead nut 5. The rotation of the lead screw 3 is controlled by the drive motor 2, and the end of the lead screw 3 away from the drive motor 2 mates with the lead nut 5. The mating sleeve 10 has a clearance cavity for partial insertion of the end of the lead screw 3 that passes through the lead nut 5.

[0023] The fixing component includes a fixing ring 8 provided on the mounting base 6, and the fixing ring 8 is fixedly disposed on the outer wall of the guide rod 7.

[0024] The lead screw 3 is connected to the output shaft of the drive motor 2 via the coupling 4.

[0025] Specific steps: When the two clamping nut bodies 1 need to clamp, firstly, start the drive motor 2, causing the drive motor 2 to drive the lead screw 3 to rotate, and causing the lead screw nut 5 on the lead screw 3 to move towards the drive motor 2. At this time, the lead screw nut 5 will drive the inner half nut 101 connected to the mating sleeve 10 to move closer to the drive motor 2 through the mating sleeve 10. At this time, the inner half nut 101 connected to the mating sleeve 10 will drive the outer half nut 102 in the other set of clamping nut bodies 1 to move away from the drive motor 2 through the guide rod 7. At the same time, when the drive motor 2 pulls the inner half nut 101 connected to the mating sleeve 10 closer to the drive motor 2 through the lead screw 3... When the direction is moved, the drive motor 2 will also be subjected to the reaction force of the inner half nut 101. At this time, the drive motor 2 and the mounting base 6 will move. Since the mounting base 6 is fixed to the guide rod 7 on the outer half nut 102 near the nut 5 through the fixing ring 8, when the mounting base 6 moves, it will drive the outer half nut 102 to move away from the drive motor 2 through the guide rod 7. When the outer half nut 102 moves, it will pull the inner half nut 101 in the other set of clamping nut bodies 1 to move closer to the drive motor 2 through the guide rod 7, thereby realizing the mutual opening of the two sets of clamping nut bodies 1; the two sets of clamping nut bodies 1 clamp each other.

[0026] Example 2

[0027] The difference between this embodiment and Embodiment 1 is that, referring to... Figure 3 The lead screw 3 is connected to the output shaft of the drive motor 2 via a worm gear jack 9.

[0028] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A brake mechanism for an injection molding machine, comprising two sets of clamping nut bodies (1) located on the injection molding machine template, each clamping nut body (1) comprising an inner half nut (101) disposed opposite to each other and an outer half nut (102) cooperating with the inner half nut (101), wherein an interleaved guide component is provided between the two sets of clamping nut bodies (1) such that when the two inner half nuts (101) move closer or further away from each other, the two outer half nuts (102) tend to move further away or closer to each other, the interleaved guide component comprising at least one guide rod (7) disposed parallel to each outer half nut (102), the guide rod (7) passing through the inner half nut (101) cooperating with the outer half nut (102) and then fixedly connected to another inner half nut (101), wherein a driving member is provided between the two inner half nuts (101) to drive them to move closer or further away from each other, characterized in that: The driving component includes a drive motor (2), a lead screw (3), and a lead screw nut (5). The lead screw nut (5) is fixed on a mating sleeve (10). The mating sleeve (10) is fixed to the end of an inner half nut (101) away from the outer half nut (102) that it mates with. The drive motor (2) is mounted on a mounting base (6). The mounting base (6) and the guide rod (7) on the outer half nut (102) near the lead screw nut (5) are fixedly mated by a fixing component and are guided and inserted into the guide rod (7) near the inner half nut (101) of the lead screw (5). The rotation of the lead screw (3) is controlled by the drive motor (2), and the end of the lead screw (3) away from the drive motor (2) mates with the lead screw nut (5). The mating sleeve (10) has a clearance cavity for partial insertion of the end of the lead screw (3) that passes through the lead screw nut (5).

2. The brake mechanism of an injection molding machine according to claim 1, characterized in that: The fixing component includes a fixing ring (8) provided on the mounting base (6), and the fixing ring (8) is fixedly disposed on the outer wall of the guide rod (7).

3. The brake mechanism of an injection molding machine according to claim 1, characterized in that: The lead screw (3) is connected to the output shaft of the drive motor (2) via a coupling (4).

4. The brake mechanism of an injection molding machine according to claim 1, characterized in that: The lead screw (3) is connected to the output shaft of the drive motor (2) via a worm gear jack (9).

Images