阅读说明：本技术 一种链条式步进送料机构 (Chain type stepping feeding mechanism ) 是由 沈秋芹 于 2019-09-30 设计创作，主要内容包括：本发明公开了一种链条式步进送料机构,包括底板、两个并排固定在底板上的立板、送料传动部件和送料驱动部件；送料传动部件包括两个链轮和送料链条,送料链条上间隔设有弹性夹料板,送料驱动部件包括驱动气缸、齿条、单向棘轮组件和滑座,齿条与驱动气缸连接,齿条滑动连接在滑座上,单向棘轮组件包括内棘齿轮、棘爪座、端盖和棘爪块,棘爪座套接在链轮上,内棘齿轮的一端通过轴承与棘爪座的一端配合,棘爪块的一端铰接在棘爪座的另一端,棘爪块的自由端还通过压簧与棘爪座连接,内棘齿轮与齿条啮合；本发明以驱动气缸提供动力,使齿条做往复运动,配合单向棘轮组件的单向传递性,实现步进式送料,降低制作成本,满足防爆性高的应用场合。(The invention discloses a chain type stepping feeding mechanism which comprises a bottom plate, two vertical plates, a feeding transmission part and a feeding driving part, wherein the two vertical plates are fixed on the bottom plate side by side; the feeding transmission component comprises two chain wheels and a feeding chain, elastic material clamping plates are arranged on the feeding chain at intervals, the feeding driving component comprises a driving cylinder, a rack, a one-way ratchet wheel component and a sliding seat, the rack is connected with the driving cylinder, the rack is connected to the sliding seat in a sliding manner, the one-way ratchet wheel component comprises an inner ratchet wheel, a pawl seat, an end cover and a pawl block, the pawl seat is sleeved on the chain wheels, one end of the inner ratchet wheel is matched with one end of the pawl seat through a bearing, one end of the pawl block is hinged to the other end of the pawl seat, the free end of the pawl block is also connected with the pawl seat through a pressure spring, and the inner ratchet; the invention provides power by the driving cylinder, so that the rack does reciprocating motion, and the stepping feeding is realized by matching with the one-way transmissibility of the one-way ratchet wheel component, thereby reducing the manufacturing cost and meeting the application occasions with high explosion resistance.)

1. A chain type stepping feeding mechanism is characterized by comprising a bottom plate (1), two vertical plates (2) which are fixed on the bottom plate (1) side by side, a feeding transmission part (3) and a feeding driving part (4);

the feeding transmission part (3) comprises two chain wheels (31) and a feeding chain (32), the two chain wheels (31) are connected between the two vertical plates (2) in a spaced mode, the feeding chain (32) is wound on the two chain wheels (31), and a plurality of pairs of elastic material clamping plates (33) are arranged on the feeding chain (32) at intervals;

the feeding driving part (4) comprises a driving cylinder (41), a rack (42), a one-way ratchet wheel assembly (43) and a sliding seat (44), the driving cylinder (41) and the sliding seat (44) are fixed on one vertical plate (2), one end of the rack (42) is fixedly connected with the output end of the driving cylinder (41), the other end of the rack (42) is connected to the sliding seat (44) in a sliding manner, the one-way ratchet wheel assembly (43) comprises an inner ratchet gear (431), a pawl seat (432), an end cover (433) and at least one pawl block (434), the pawl seat (432) is sleeved on one chain wheel (31), one end of the inner ratchet gear (431) is matched with one end of the pawl seat (432) through a bearing, one end of the pawl block (434) is hinged to the other end of the pawl seat (432), and the free end of the pawl block (434) is connected with the pawl seat (432) through a pressure spring (435), the tooth end of the inner ratchet gear (431) is meshed with the rack (42), and the end cover (433) covers the other end of the inner ratchet gear (431).

2. The chain type stepping feeding mechanism of claim 1, wherein the feeding chain (32) comprises a plurality of chain links (321) which are closed loops and are connected in sequence, each chain link (321) comprises an outer chain plate (3211), an inner chain plate (3212), a connecting pin (3213) and a roller shaft (3214), the outer chain plate (3211) and the inner chain plate (3212) are sequentially installed at two ends of the connecting pin (3213), supporting transverse plates (3215) are respectively fixed on the outer chain plate (3211) and the inner chain plate (3212), and the roller shaft (3214) is sleeved on the connecting pin (3213); two adjacent chain links (321) are hinged together through connecting pins (3213), and a roller shaft (3214) is sleeved on each connecting pin (3213); the chain wheel (31) is provided with arc notches matched with the roller shaft (3214) at equal intervals.

3. The chain type stepping feeding mechanism as claimed in claim 2, wherein each pair of elastic material clamping plates (33) comprises two symmetrically arranged material clamping blocks (331), the two material clamping blocks (331) are respectively connected to the supporting transverse plate (3215) through two limiting posts (332) and can slide relative to the supporting transverse plate (3215), and a material clamping spring (333) is connected between the limiting posts (332) and the material clamping blocks (331).

4. The chain type stepping feeding mechanism as claimed in claim 2, wherein each pair of elastic material clamping plates (33) comprises two symmetrically arranged material clamping blocks (331), the two material clamping blocks (331) are respectively connected to the supporting transverse plate (3215) through two limiting posts (332) and can slide relative to the supporting transverse plate (3215), and a material clamping spring (333) is connected between the limiting posts (332) and the material clamping blocks (331).

5. The chain type stepping feeding mechanism as claimed in claim 2, wherein each pair of elastic material clamping plates (33) comprises two symmetrically arranged material clamping blocks (331), the two material clamping blocks (331) are respectively connected to the supporting transverse plate (3215) through two limiting posts (332) and can slide relative to the supporting transverse plate (3215), and a material clamping spring (333) is connected between the limiting posts (332) and the material clamping blocks (331).

Technical Field

The invention relates to the technical field of transmission feeding, in particular to a chain type stepping feeding mechanism.

Background

The existing chain feeding mechanism is generally driven by a motor, but is not suitable for the occasion with explosion-proof requirement, and simultaneously, the motor is expensive and has higher cost.

Disclosure of Invention

The invention aims to overcome the defects and provide a chain type stepping feeding mechanism.

In order to achieve the purpose, the invention adopts the following specific scheme:

a chain type stepping feeding mechanism comprises a bottom plate, two vertical plates, a feeding transmission part and a feeding driving part, wherein the two vertical plates are fixed on the bottom plate side by side;

the feeding transmission part comprises two chain wheels and a feeding chain, the two chain wheels are connected between the two vertical plates in a spaced mode, the feeding chain is wound on the two chain wheels, and a plurality of pairs of elastic material clamping plates are arranged on the feeding chain at intervals;

the feeding driving component comprises a driving cylinder, a rack, a one-way ratchet wheel component and a sliding seat, the driving cylinder and the sliding seat are fixed on one vertical plate, one end of the rack is fixedly connected with the output end of the driving cylinder, the other end of the rack is connected to the sliding seat in a sliding mode, the one-way ratchet wheel component comprises an inner ratchet wheel, a pawl seat, an end cover and at least one pawl block, the pawl seat is sleeved on one chain wheel, one end of the inner ratchet wheel is matched with one end of the pawl seat through a bearing, one end of the pawl block is hinged to the other end of the pawl seat, the free end of the pawl block is further connected with the pawl seat through a pressure spring, the tooth end of the inner ratchet wheel is meshed with the rack, and the end cover covers the other end of the inner ratchet wheel.

The feeding chain comprises a plurality of chain links which are closed loops and are sequentially connected, each chain link comprises an outer chain plate, an inner chain plate, a connecting pin and a roller shaft, the outer chain plates and the inner chain plates are sequentially arranged at two ends of the connecting pin, supporting transverse plates are respectively fixed on the outer chain plates and the inner chain plates, and the roller shafts are sleeved on the connecting pins; two adjacent chain links are hinged together through connecting pins, and each connecting pin is sleeved with a roller shaft; and arc notches matched with the roll shaft are arranged on the chain wheel at equal intervals.

Each pair of elastic material clamping plates comprises two symmetrically arranged material clamping blocks, the two material clamping blocks are connected to the supporting transverse plate through two limiting columns respectively and can slide relative to the supporting transverse plate, and a material clamping spring is connected between each limiting column and each material clamping block.

The invention has the beneficial effects that: compared with the prior art, the invention provides power by the driving cylinder, the driving cylinder drives the rack to do reciprocating motion ceaselessly, and the unidirectional transmission of the unidirectional ratchet wheel component is combined, so that the feeding chain rotates in a stepping mode to realize feeding, the manufacturing cost of the feeding mechanism is reduced, and the application occasion with high explosion resistance is met.

In addition, a plurality of pairs of elastic material clamping plates are arranged on the feeding chain at intervals, materials are clamped by the elastic material clamping plates, and then the material is loosened by the elastic material clamping plates by utilizing the characteristic that the length of the feeding chain at the position of the arc section is lengthened, so that the unloading of the materials is realized, the additional external force support is not needed, the energy is saved, the structure is simple, and the cost is lower.

Drawings

Fig. 1 is a schematic structural diagram of a chain type stepping feeding mechanism provided by an embodiment of the invention;

fig. 2 is a partial structural schematic view of a chain type stepping feeding mechanism provided by the embodiment of the invention;

FIG. 3 is a schematic structural diagram of a feeding driving component provided in an embodiment of the present invention;

FIG. 4 is an exploded view of the one-way ratchet assembly provided by the present invention;

FIG. 5 is a top view of a one-way ratchet assembly provided by an embodiment of the present invention;

FIG. 6 is a cross-sectional view taken along A-A of FIG. 5;

FIG. 7 is a schematic view of a sprocket and a feeding chain in cooperation according to an embodiment of the present invention;

FIG. 8 is a schematic structural view of a link of a feed chain provided by an embodiment of the present invention;

FIG. 9 is a schematic view of another perspective of a link of a feeder chain according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a pair of elastic material clamping plates according to an embodiment of the present invention;

description of reference numerals: 1-a bottom plate; 2-standing the plate; 3-a feeding transmission part; 31-a sprocket; 32-a feeding chain; 321-chain link; 3211-outer link plate; 3212-inner link plate; 3213-connecting pin; 3214-roll shaft; 3215-supporting the transverse plate; 33-elastic material clamping plate; 331-a clamp block; 332-a limiting column; 333-clamping spring; 4-a feed drive component; 41-driving a cylinder; 42-a rack; 43-a one-way ratchet assembly; 431-inner ratchet gear; 432-pawl seat; 433-end cap; 434-pawl piece; 435-pressure spring; 44-a slide; 45-cylinder support.

Detailed Description

The invention will be described in further detail with reference to the following figures and specific examples, without limiting the scope of the invention.

As shown in fig. 1 to 10, the chain type stepping feeding mechanism of the present embodiment includes a bottom plate 1, two vertical plates 2 fixed on the bottom plate 1 side by side, a feeding transmission component 3 and a feeding driving component 4; the feeding transmission part 3 comprises two chain wheels 31 and a feeding chain 32, the two chain wheels 31 are connected between the two vertical plates 2 at intervals, the feeding chain 32 is wound on the two chain wheels 31, and a plurality of pairs of elastic material clamping plates 33 are arranged on the feeding chain 32 at intervals; the feeding driving component 4 comprises a driving cylinder 41, a rack 42, a one-way ratchet wheel component 43 and a sliding seat 44, the driving cylinder 41 and the sliding seat 44 are both fixed on one of the vertical plates 2, one end of the rack 42 is fixedly connected with the output end of the driving cylinder 41, the other end of the rack 42 is slidably connected to the sliding base 44, the one-way ratchet assembly 43 comprises an inner ratchet gear 431, a pawl base 432, an end cap 433 and three pawl blocks 434, the pawl seat 432 is sleeved on one of the chain wheels 31, one end of the inner ratchet gear 431 is matched with one end of the pawl seat 432 through a bearing, one ends of the three pawl blocks 434 are respectively hinged at the other end of the pawl seat 432, free ends of the three pawl blocks 434 are respectively connected with the pawl seat 432 through a pressure spring 435, the teeth end of the inner ratchet gear 431 is engaged with the rack 42, and the end cap 433 covers the other end of the inner ratchet gear 431.

Specifically, twelve pairs of elastic material clamping plates 33 are arranged on the feeding chain 32 at intervals, a driving cylinder 41 and a sliding seat 44 are fixed on the inner side of the same vertical plate 2, the driving cylinder 41 is fixedly connected with the vertical plate 2 through a cylinder support 45, a pawl seat 432 is sleeved on a chain wheel 31 close to the sliding seat 44, a circle of inner teeth matched with a pawl block 434 are arranged on the inner wall of an inner ratchet gear 431, a circle of teeth are arranged on the outer circle surface of the other end of the inner ratchet gear 431, a rack 42 is meshed with the teeth, an avoidance position corresponding to three pawl blocks 434 is arranged on the outer circle surface of the other end of the pawl seat 432, and free ends of the three pawl blocks 434 are inclined upwards under the action of a pressure spring 435 and are meshed with the inner teeth;

as shown in fig. 2, in operation, the driving cylinder 41 of the feeding driving component 4 drives the rack 42 to extend, the rack 42 slides in the sliding seat 44 and drives the inner ratchet wheel 431 of the unidirectional ratchet assembly 43 to rotate clockwise, at this time, the inner ratchet wheel 431 presses down the three pawl blocks 434, so that the three pawl blocks 434 are disengaged from the inner gear teeth, and the space for pressing down the pawl blocks 434 is provided, at this time, the inner ratchet wheel 431 does not drive the pawl seat 432 to rotate, that is, the feeding transmission component 3 does not rotate; then, the driving cylinder 41 drives the rack 42 to retract, the rack 42 drives the inner ratchet gear 431 to rotate counterclockwise, at this time, the three pawl blocks 434 are kept meshed with the inner gear teeth of the inner ratchet gear 431, so that the inner ratchet gear 431 drives the pawl seat 432 to rotate, the pawl seat 432 drives the chain wheel 31 to rotate, the chain wheel 31 drives the feeding chain 32 to rotate, and after the driving cylinder 41 drives the rack 42 to retract completely, the feeding chain 32 rotates by one unit distance; the above process is repeated, under the action of the driving cylinder 41, the rack 42 makes reciprocating motion, and drives the feeding chain 32 to rotate step by step to realize feeding; the materials are placed in each pair of elastic material clamping plates 33, the elastic material clamping plates 33 clamp the materials, when each pair of elastic material clamping plates 33 moves from the straight line section of the feeding chain 32 to the circular arc section, the length of the feeding chain 32 in the straight line section is smaller than that of the circular arc section, so that the elastic material clamping plates 33 gradually loosen the materials under the action of the feeding chain 32 until the materials are separated from the elastic material clamping plates 33 under the dead weight, and the unloading of the materials is realized.

In the embodiment, the driving cylinder 41 provides power, the driving cylinder 4 drives the rack 42 to continuously reciprocate, and the unidirectional transmission of the unidirectional ratchet wheel assembly 43 is combined, so that the feeding chain 32 rotates in a stepping manner to realize feeding, the manufacturing cost of the feeding mechanism is reduced, and the application occasion with high explosion resistance is met.

In addition, in this embodiment, a plurality of pairs of elastic material clamping plates 33 are installed on the feeding chain 32 at intervals, and the material is clamped by each pair of elastic material clamping plates 33, and then the material is loosened by each pair of elastic material clamping plates 33 by utilizing the characteristic that the length of the feeding chain 32 at the position of the arc section is lengthened, so that the material is unloaded, no additional external force is needed for supporting, the energy is saved, the structure is simple, and the cost is lower.

Based on the above embodiments, further, as shown in fig. 7 to 9, the feeding chain 32 includes a plurality of links 321 which are in a closed loop and are connected in sequence, each link 321 includes an outer link plate 3211, an inner link plate 3212, a connecting pin 3213 and a roller shaft 3214, the outer link plates 3211 and the inner link plates 3212 are sequentially installed at two ends of the connecting pin 3213, the outer link plates 3211 and the inner link plates 3212 are respectively fixed with a supporting transverse plate 3215, and the roller shaft 3214 is sleeved on the connecting pin 3213; two adjacent chain links 321 are hinged together through connecting pins 3213, and each connecting pin 3213 is sleeved with a roller shaft 3214; the chain wheel 31 is provided with arc notches at equal intervals, which are matched with the roller shafts 3214. In this embodiment, as shown in fig. 10, each pair of elastic material clamping plates 33 includes two symmetrically disposed material clamping blocks 331, the two material clamping blocks 331 are respectively connected to the supporting horizontal plate 3215 through two limiting posts 332 and can slide relative to the supporting horizontal plate 3215, and a material clamping spring 333 is further connected between the limiting posts 332 and the material clamping blocks 331. Specifically, a supporting transverse plate 3215 is arranged between the two material clamping blocks 331 so as to facilitate placement of materials, the two material clamping blocks 331 are connected to the supporting transverse plate 3215 connected to the inner chain plate 3212, the materials are placed between the two material clamping blocks 331, the two material clamping blocks 331 clamp the materials under the action of the material clamping spring 333, when the feeding chain 32 moves to contact with the chain wheel 31, a gap between the two adjacent supporting transverse plates 3215 is increased, and further, a distance between the two material clamping blocks 331 is increased, so that the purpose of loosening the materials is achieved, and the discharging operation is automatically completed.

Of course, each pair of elastic material clamping plates 33 may be correspondingly installed on each link 321 in this embodiment, that is, two material clamping blocks 331 are respectively installed on the adjacent supporting transverse plate 3215, so as to facilitate conveying of small-sized materials, and specifically, the position of each pair of elastic material clamping plates 33 may be adjusted according to the size of the materials.

The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present patent application are included in the protection scope of the present patent application.