An inner mold lifting tube making machine inner mold feeding structure

Abstract

An inner mold material feeding structure for an inner mold lifting tube making machine relates to the field of tube making equipment technology. It includes a top plate fixedly installed on the upper end of the inner mold, with a material feeding drive shaft rotatably mounted at the center of the top plate. A drive motor for rotating the material feeding drive shaft is also installed below the top plate. The upper end of the material feeding drive shaft extends out of the top plate and is connected to a material feeding disc. Multiple material feeding blades located above the top plate are circumferentially connected to the material feeding disc. These blades are inclined relative to the radial direction of the top plate, opposite to the rotation direction of the material feeding disc. The material feeding blades are inclined radially, and when they rotate, they generate centrifugal force, pushing the material radially outward under the action of centrifugal force, allowing it to fall more effectively into the mold cavity.

Description

Technical Field

[0001] This utility model relates to the field of tube making equipment technology, specifically to an inner mold material feeding structure for an inner mold lifting tube making machine. Background Technology

[0002] like Figure 4 , 5 As shown, the existing tube making machine's inner mold feeding structure includes a top plate 16, a feeding drive shaft 17 rotatably mounted on the top plate 16, a drive motor 18 for driving the feeding drive shaft 17 to rotate is provided below the top plate 16, a feeding disc 19 is driven and mounted on the feeding drive shaft 17, and feeding blades 20 are connected to the feeding disc 19 by bolts.

[0003] During operation, concrete material falls onto the top plate 16, and the drive motor 18 drives the material feeding plate 19, which in turn drives the material feeding blades 20, which are bolted to the material feeding plate 19, to rotate, pushing the material outward radially to complete the material distribution.

[0004] The feeding structure has obvious defects in actual application: 1) The feeding blades 20 are radially distributed along the top plate 16, so the material does not receive centrifugal force, the feeding efficiency is not high, the corresponding contact parts wear out a lot, and it is not durable; 2) The top plate 16 is fixed to the inner mold, and it needs to be replaced after wear, which is not economical and the replacement cost is high; 3) The feeding disc 19 and the feeding drive shaft 17 are fitted by a cylindrical hole, which makes disassembly difficult. Utility Model Content

[0005] The purpose of this invention is to provide an inner mold material feeding structure for an inner mold lifting tube making machine, which can effectively solve the problems in the background art.

[0006] The technical solution to achieve the above objective is as follows: an inner mold lifting tube making machine inner mold feeding structure, including a top plate fixedly installed on the upper end of the inner mold, a feeding drive shaft rotatably installed at the center of the top plate, a drive motor for driving the feeding drive shaft to rotate is also installed below the top plate, the upper end of the feeding drive shaft extends out of the top plate and is connected to a feeding disc, and a plurality of feeding blades located above the top plate are circumferentially connected to the feeding disc, characterized in that: the feeding blades are inclined to the opposite side of the rotation direction of the feeding disc with the radial direction of the top plate as the reference.

[0007] Furthermore, the feeding blades are tilted 30°-60° relative to the radial reference.

[0008] Furthermore, multiple wear-resistant plates spliced ​​together as a whole are detachably connected to the top plate on the outer periphery of the feeding disc.

[0009] Furthermore, a bearing housing with vertical penetration is installed at the center of the top plate, and the material feeding drive shaft is rotatably mounted in the bearing housing through the bearing. A drive motor for driving the material feeding drive shaft to rotate is connected below the bearing housing.

[0010] Furthermore, the upper end of the feeding drive shaft extends upward to the bearing housing, and the feeding disc is fitted onto the feeding drive shaft, with the two connected by a key drive.

[0011] Furthermore, the feeding drive shaft is rotatably mounted in a bearing housing by two bearings spaced apart vertically. The top end of the feeding drive shaft is connected to a pressure injection cup. The outlet end of the pressure injection cup is connected to the cavity between the two bearings in the bearing housing through a channel set in the feeding drive shaft. The lower bearing is a semi-enclosed bearing.

[0012] Furthermore, the upper end of the feeding drive shaft and the center hole of the feeding disc are tapered with the smaller end facing upwards. The top of the feeding drive shaft is detachably connected to a pressure cap that presses down on the feeding disc. The bottom of the pressure cap is provided with a cavity for accommodating the pressure injection cup.

[0013] The beneficial effects of this utility model are as follows: 1) During operation, the concrete material falls onto the top plate, and the drive motor drives the feeding disc, which in turn drives the feeding blades connected to the feeding disc by bolts to rotate, pushing the material outward radially to complete the material distribution. The advantage is that the feeding blades are set relatively radially inclined, and the rotation of the feeding blades generates a certain centrifugal force, which pushes the material outward radially under the action of centrifugal force, making it fall into the mold cavity better; 2) The top plate is detachably connected by countersunk bolts to multiple wear-resistant plates spliced ​​as a whole, which can be replaced after wear, greatly reducing replacement costs; 3) The upper end of the feeding drive shaft and the center hole of the feeding disc are tapered with the small end facing upward, which is convenient for disassembly. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the usage state of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a top view of the present invention; Figure 4 This is a cross-sectional view of the existing material feeding structure; Figure 5 This is a top view of the existing material feeding structure. Detailed Implementation

[0015] like Figure 1-3 As shown, this utility model discloses an inner mold material feeding structure 1 for an inner mold lifting tube making machine. The inner mold material feeding structure 1 is installed on the top of the inner mold 2. An outer mold 3 is also sleeved outside the inner mold 2, and a mold cavity 4 is formed between the inner mold 2 and the outer mold 3.

[0016] The inner mold feeding structure 1 includes a top plate 5 fixedly installed on the upper end of the inner mold 2. A bearing seat 6, arranged vertically through the top plate 5, is coaxially mounted at the center of the top plate 5. A feeding drive shaft 8 is rotatably mounted in the bearing seat 6 via a bearing 7. There are two bearings 7 arranged vertically. The lower bearing 7 is a semi-enclosed bearing, i.e., sealed at the bottom. The upper ends of the inner and outer rings of the upper bearing 7 are respectively limited by a first step 21 set on the bearing seat 6 and the feeding drive shaft 8. The lower end of the outer ring of the upper bearing 7 is not limited. The inner rings of the upper and lower bearings 7 are limited by a bushing 22. The upper end of the outer ring of the lower bearing 7 is limited by the second step 23 set on the bearing housing 6. The bottom end of the inner ring of the lower bearing 7 is limited by the nut 24 at the lower end of the feeding drive shaft 8 through a threaded connection. The bottom end of the bearing housing 6 is connected to a bearing cover 9 for axial positioning of the outer ring of the lower bearing 7. The bottom end of the bearing cover 9 is connected to a drive motor 10. The output end of the drive motor 10 passes through the bearing cover 9 and is connected to the feeding drive shaft 8 for transmission. The bearing cover 9 is provided with a central hole to facilitate the passage of the output end of the drive motor 10. Preferably, the drive motor 10 is a closed waterproof motor.

[0017] The top end of the feeding drive shaft 8 is connected to a pressure oil cup 25. The outlet end of the pressure oil cup 25 is connected to the cavity between the two bearings 7 in the bearing seat 6 through a channel 27 provided in the feeding drive shaft 8. The bearings 7 are lubricated by adding grease to the bearing seat 6 through the pressure oil cup 25.

[0018] The bearing housing 6 protrudes upward from the top plate 5. The upper end of the feeding drive shaft 8 extends out of the bearing housing 6 and is fitted with a feeding disc 12. The feeding disc 12 and the feeding drive shaft 8 are connected by a key 15. The feeding disc 12 is simultaneously rotated and fitted outside the bearing housing 6. The upper end of the feeding drive shaft 8 and the center hole of the feeding disc 12 are tapered with the smaller end facing upward, which is convenient for disassembly. The top end of the feeding drive shaft 8 is detachably connected to a pressure cover 26 that presses down on the feeding disc 12 by bolts. The bottom end of the pressure cover 26 is provided with a cavity for accommodating the pressure injection cup 25.

[0019] Multiple wear-resistant plates 11 are detachably connected to the top plate 5 on the outer periphery of the feeding disc 12 by countersunk bolts. The wear-resistant plates 11 can be, but are not limited to, made of NM400 material. The wear-resistant plates 11 cover the area of ​​the top plate 5 located on the outer ring of the feeding disc 15. The wear-resistant plates 11 are fan-shaped and can be replaced after wear, greatly reducing replacement costs.

[0020] A connecting seat 13 is circumferentially connected to the feeding disc 12. A feeding blade 14 is installed on the side of the connecting seat 13 facing the rotation direction of the feeding disc 12, located above the top plate 5. The feeding blade 14 extends outward from the connecting seat 13. The feeding blade 14 is inclined to the opposite side of the rotation direction of the feeding disc 12 with the radial direction of the top plate 5 as the reference. The inclination angle α of the feeding blade 14 relative to the radial reference is 30°-60°. The mounting surface of the connecting seat 13 for mounting the feeding blade 14 is parallel to the inclination direction of the feeding blade 14.

[0021] During operation, the concrete material falls onto the top plate 5, and the drive motor 10 drives the feeding plate 12, which in turn drives the feeding blades 14, which are bolted to the feeding plate 12, to rotate. This pushes the material outward radially, thus completing the material distribution. The advantage is that the feeding blades are set relatively radially, and the rotation of the feeding blades 14 generates a certain centrifugal force, which pushes the material outward radially under the action of centrifugal force, allowing it to fall into the mold cavity 4 more effectively.

Claims

1. An inner mold material feeding structure for an inner mold lifting tube making machine, comprising a top plate fixedly installed on the upper end of the inner mold, a material feeding drive shaft rotatably mounted at the center of the top plate, a drive motor for driving the material feeding drive shaft to rotate installed below the top plate, the upper end of the material feeding drive shaft extending out of the top plate and being connected to a material feeding disc, and a plurality of material feeding blades located above the top plate being circumferentially connected to the material feeding disc, characterized in that: The feeding blades are inclined to the opposite side of the feeding disc's rotation direction, with the radial direction of the top plate as the reference.

2. A pusher structure for an inner mold of an inner mold lift type pipe making machine according to claim 1, characterized in that: The feeding blades are tilted 30°-60° relative to the radial reference.

3. An inner mold stripping structure for an inner mold lift type pipe production machine according to claim 1, characterized in that: The top plate on the outer periphery of the feeding disc is detachably connected to multiple wear-resistant plates spliced ​​together as a whole.

4. The inner mold stripping structure of an inner mold lift type pipe production machine according to claim 1, wherein: The top plate is equipped with a bearing housing that runs vertically through it. The material feeding drive shaft is rotatably mounted in the bearing housing via the bearing. A drive motor that drives the material feeding drive shaft to rotate is connected to the bottom of the bearing housing.

5. An inner mold stripping structure for an inner mold lift type pipe production machine according to claim 4, characterized in that: The upper end of the feeding drive shaft extends upward to the bearing housing, and the feeding disc is mounted on the feeding drive shaft and connected to it by a key drive.

6. An inner mold stripping structure for an inner mold lift type pipe production machine according to claim 4, characterized in that: The feeding drive shaft is rotatably mounted in a bearing housing by two bearings spaced apart vertically. The top end of the feeding drive shaft is connected to a pressure injection cup. The outlet end of the pressure injection cup is connected to the cavity between the two bearings in the bearing housing through a channel set in the feeding drive shaft. The lower bearing is a semi-enclosed bearing.

7. An inner mold stripping structure for an inner mold lift type pipe production machine according to claim 4, characterized in that: The upper end of the feeding drive shaft and the center hole of the feeding disc are tapered and the smaller end is facing upward. The top of the feeding drive shaft is detachably connected to a pressure cover that presses down on the feeding disc. The bottom of the pressure cover is provided with a cavity for accommodating the pressure injection cup.

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