CN102499539A - Threading device for beads of cooling mat made of strings of beads - Google Patents

Abstract

The invention relates to a beaded threading device for a beaded cool pad, which includes upper and lower frames, and is characterized in that cam profiles are symmetrically provided on the two side walls of the upper and lower frames, and inside the upper and lower frames are respectively A movable clamping mechanism and a movable positioning mechanism are provided, and the movable clamping mechanism and the movable positioning mechanism are connected with the active driving mechanism arranged on the frame. The invention has simple structure and convenient operation, can effectively improve the degree of automation of the bead stringing process, improve product production efficiency, and reduce production labor.

Description

Beaded stringing device for beaded cool pad

technical field

The invention relates to a bead threading device for a beaded cool pad, which is applied to the beading process of the cool pad.

Background technique

At present, there is no corresponding mechanism for the required threading process similar to the weaving of beaded cool pads. If you want to automate the weaving of this type of beaded cool pad, you need a corresponding mechanism to realize the threading process. Therefore, it is the research object of the present invention to address the above problems.

Contents of the invention

The object of the present invention is to provide a bead stringing device for beaded cool pads, which helps realize automatic production in the production process of cool pads, and solves the problems of low efficiency and heavy labor in the current manual production of beaded beaded cool pads.

The present invention is characterized in that: a beaded cool pad bead threading device, including upper and lower frames, characterized in that: the two side walls of the upper and lower frames are symmetrically provided with cam profiles, the upper and lower frames A movable clamping mechanism and a movable positioning mechanism are respectively arranged in the frame, and the movable clamping mechanism and the movable positioning mechanism are connected with the active driving mechanism arranged on the frame.

The advantages of the present invention: the present invention has simple structure and convenient operation, can effectively improve the degree of automation of the bead stringing process, improve product production efficiency, and reduce production labor.

Description of drawings

Fig. 1 is a schematic diagram of the state when the front end of the needle is fixed and the material is not conveyed in the threading process of the present invention.

Fig. 2 is a schematic diagram of the state when the rear end of the needle is fixed and the material is not conveyed in the threading process of the present invention.

Fig. 3 is a schematic diagram of the state when the rear end of the needle is fixed during material transfer in the threading process of the present invention.

Fig. 4 is a schematic diagram of the state when the front end of the needle is fixed after the material transfer in the threading process of the present invention is completed.

Fig. 5 is a structural schematic diagram of the movable positioning and clamping mechanism of the embodiment of the present invention.

Fig. 6 is a schematic diagram of the overall structure of the embodiment of the present invention.

Fig. 7 is a schematic diagram of an exploded structure of an embodiment of the present invention.

Fig. 8 is a structural schematic view of the embodiment of the present invention when the crank is rotated through 180°.

Among them: 45-needle; 46-braiding (beading).

Detailed ways

With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8, a kind of beaded cooling pad beaded threading device comprises upper and lower frames 1,2, and the upper and lower machine Cam profiles 1-1, 2-1 are symmetrically provided on the two side walls of the frame 1, 2, and the upper and lower frames 1, 2 are respectively provided with a movable clamping mechanism and a movable positioning mechanism, and the movable clamping The mechanism and the movable positioning mechanism are connected with the active driving mechanism arranged on the frame.

The above-mentioned movable clamping mechanism is two groups of movable clamping mechanisms arranged on the front side and the rear side of the upper frame 1 , and the movable clamping mechanism on the front side and the movable clamping mechanism on the rear side are connected together through the upper link 3 .

The above-mentioned movable positioning mechanism is two groups of movable positioning mechanisms located at the front side and the rear side of the lower frame 2 , and the front side movable positioning mechanism and the rear side movable positioning mechanism are connected together through the lower connecting rod 4 .

The above-mentioned front group movable clamping mechanism includes the front movable pressing block 5 arranged in the chute 1-2 at the front side of the upper frame 1, and the front movable pressing block 5 is connected with one end of the front connecting rod AA7 through the front pin shaft BA6 , the other end of the front connecting rod AA7 is connected with the front guide block A9 through the front roller A8 rolling in the cam profile 1-1 on the side wall of the upper frame 1, and the front guide block A9 is connected with the guide block A9 on its guide One end of the front crank A10 in the slot is movably connected, and the other end of the front crank A10 is connected with one end of the upper connecting rod 3 through the front pin shaft CA11; The rear movable pressing block 12 in the upper chute 1-2 is connected to one end of the rear connecting rod AA14 through the rear pin shaft BA13, and the other end of the rear connecting rod AA14 is placed on the upper frame 1 The rear roller A15 rolling inside the cam profile 1-1 on the other side wall is connected to the rear guide block A16, and the rear guide block A16 is movably connected to one end of the rear crank A17 arranged in its guide groove. The other end of the rear crank A17 is connected with the other end of the upper connecting rod 3 through the rear pin shaft CA18.

The above-mentioned front group movable positioning mechanism includes the front movable needle base 19 arranged in the chute 2-2 at the front side of the lower frame 2, and the front movable needle base 19 is connected with one end of the front connecting rod AB21 through the front pin shaft BB20, The other end of the front connecting rod AB21 is connected with the front guide block B23 through the front roller B22 rolling in the cam profile 2-1 arranged on the side wall of the lower frame 2, and the front guide block B23 is connected with the guide groove provided in the guide groove. One end of the front crank B24 is movably connected, and the other end of the front crank B24 is connected with one end of the lower connecting rod 4 through the front pin shaft CB25; The rear movable needle seat 26 in 2-2, the rear movable needle seat 26 is connected with one end of the rear connecting rod AB28 through the rear pin shaft BB27, and the other end of the rear connecting rod AB28 is arranged on the other side of the lower frame 2 The rear roller B29 rolling in the cam profile 2-1 on the wall is connected with the rear guide block B30, and the rear guide block B30 is movably connected with one end of the rear crank B31 arranged in its guide groove, and the rear crank B31 The other end is connected with the other end of the lower link 4 through the rear pin shaft CB32.

The front crank A10 is hinged to one side wall of the upper frame 1 via the front pin AA33, and the rear crank A17 is hinged to the other side wall of the upper frame 1 via the rear pin AA34.

The above-mentioned front crank B24 is hinged with one side wall of the lower frame 2 through the front pin AB35, and the rear crank B31 is hinged with the other side wall of the lower frame 2 through the rear pin AB36.

The above-mentioned active driving mechanism includes an active crank 37 arranged on the lower frame 2, and the active crank 37 is connected to one end of the lower connecting rod C39 and the connecting rod D40 through the lower pin shaft F38 respectively, and the other end of the lower connecting rod C39 The lower pin shaft D40 is hinged with the front crank B24, and the other end of the connecting rod D40 is respectively hinged with the flywheel 42 hinged on the upper frame 1 and one end of the upper connecting rod C43 through the upper pin shaft F41. The other end of C43 is hinged with the front crank A10 through the upper pin D44, and an eccentric hinge is adopted between the connecting rod D40 and the flywheel 42.

The above-mentioned movable pressing block and the movable needle seat are clamped through cooperation of male and female grooves.

The specific implementation process:

In the knitting process of hand-sewn clothes, hand-knitted beaded cool pads, etc. (assuming that all these threading processes are realized by needles, and for the sake of description, a needle is divided into front A, middle B and back. C three parts), you need to pinch the back end C of the needle first, pass through the braid to make it reach the middle end B of the needle, then pinch the front end A of the needle, and let go of the back end C of the needle to make the braid smoothly In the entry line (as shown in Figures 1, 2, 3, and 4), this process is called the threading process. In order to realize automation of this type of weaving (as the weaving of beaded cool pads), a corresponding threading mechanism must be designed.

1. Motion description

In order to design the threading mechanism, its specific motion process must be known. Assume that in the initial stage, the positioning of the needle is clamped at its front end, as shown in Figure 1, and the component that plays a role in positioning the needle is called the needle seat, because it is not always in contact with the needle, so it is called the movable needle seat; similarly, The member that clamps the needle is called the movable pressing block, and the combination of the movable needle base and the movable pressing block is called the movable positioning clamp, and the cooperation of the two can fix the needle. According to the manual threading process, the movement of the mechanism that realizes the process is decomposed as follows:

Step 1: The mechanism drives the movable positioning clamp at the rear end of the needle to position and clamp the rear end C of the needle. As shown in Figure 1;

Step 2: The mechanism drives the front end of the needle movable positioning clamp to move away from the front end A of the needle. At this time, the needle is positioned and clamped only by its rear end movable positioning clamp, as shown in Figure 2;

Step 3: Driven by other mechanisms, the braided fabric (such as beads) enters the middle end B of the needle, and then the mechanism drives the front end of the needle to move and position the clamp to position and clamp the front end A of the needle. The movable positioning clamp at the rear end of the needle is in the positioning and clamping state, and remains motionless, as shown in Figure 3;

Step 4: The mechanism drives the movable positioning clamp at the rear end of the needle to move away from the rear end C of the needle. At this time, the needle is positioned and clamped only by the movable positioning clamp at the front end, as shown in Figure 4; The subsequent threading process begins to cycle from step 1 again.

2. Mechanism design

From the above motion decomposition, it can be seen that the motion that the threading mechanism should satisfy is mainly the motion of the two groups of movable positioning clamps at the front and rear ends of the needle and the motion coordination between these two groups.

In order to make its movement simple and facilitate the design of the mechanism, the movement of the front and rear movable needle seats of the needle and the movable pressing blocks at the front and rear ends of the needle is designed as a linear movement. Therefore, the movement of the movable positioning clamp refers to the linear reciprocating movement of the movable needle seat and the movable pressing block and the movement of the ends having a long pause. The movement coordination of the two sets of movable positioning clamps means that when one set of movable positioning clamps moves linearly, the other set of movable positioning clamps should be in a static state and play a role in fixing the needle.

The linear reciprocating motion of the movable needle seat and the movable pressing block can use the crank slider mechanism, and the stop process can be realized by the cam mechanism, so the cam-link mechanism with variable crank length can be used to realize the straight line of the movable needle seat and the movable pressing block. Reciprocating movement with a long pause at the end. When the slider is a movable needle seat, this mechanism is called a movable positioning mechanism; when the slider is a movable pressing block, this mechanism is called a movable clamping mechanism, as shown in Figure 5.

Since the structure of the front and rear group of activity positioning mechanisms is consistent, it is unified as the activity positioning mechanism here, and the front movement positioning mechanism is used to describe. The front movable positioning mechanism is composed of front crank B24, front guide block B23, front roller B22, front connecting rod AB21, front movable needle seat 19, some pin shafts and cam profile 2-1 and chute 2-1 on the lower frame 2. 2 composition. Among them, the front roller B22 and the front crank B24 are connected by the front guide block B23, and the front roller B22 rolls on the cam profile 2-1 of the lower frame, so the front roller B22 driven by the front crank B24 during the rotation is effective. The length is related to the cam profile 2-1 of the lower frame, because the center of a segment of the profile in the cam profile 2-1 of the lower frame coincides with the hinge center of the movable needle seat when the movable positioning mechanism is in position, therefore, the current When the roller B22 is located in this section, the front movable needle seat 19 is stationary and plays a positioning role for the needle.

Since the structure of the front and rear movable clamping mechanisms is consistent, they are unified as the movable clamping mechanism here, and the front movable clamping mechanism is used for description. The front movable clamping mechanism consists of front crank A10, front guide block A9, front roller A8, front connecting rod AA7, front movable pressure block 5, some pin shafts, cam profile 1-1 and chute 1 on the upper frame 1 -2 composition. Among them, the front roller A8 and the front crank A10 are connected by the front guide block A9, and the rollers roll on the cam profile 1-1 of the upper frame, so the effective length of the movement of the front roller A8 driven by the front crank A10 during the rotation is It is related to the cam profile 1-1 of the upper frame, because the center of a section of the profile of the cam profile 1-1 of the upper frame coincides with the hinge center of the movable pressing block when the movable clamping mechanism is clamped, therefore, When the front roller A8 is in this section, the front movable pressing block 5 is still and clamps the needle. the

In order to make the front and rear ends of the needle two groups of movable positioning mechanisms have the same drive, the lower link 4 is used to connect the front crank B24 and the rear crank B31 to form a parallelogram mechanism; the upper link 3 is also used to connect the front and rear of the needle. The front crank A10 and the rear crank A17 of the two groups of movable clamping mechanisms constitute a parallelogram mechanism.

In order to make the whole threading mechanism have only one drive, a parallelogram mechanism composed of active crank 37, connecting rod D40, flywheel 42, frame and some pin shafts is inserted between the front end movable positioning mechanism and movable clamping mechanism of the needle, and is driven Part adopts flywheel 42 in order to eliminate the dead point of this parallelogram mechanism.

The working process of the whole needle threading device: the front crank B24 and the front crank A10 of the clamping mechanism are driven by the active crank 37 through some transmission parts to swing back and forth, and the front crank B24 and the front crank A10 are driven by the active positioning and clamping mechanism. The linear reciprocation of the needle base 19 and the front movable briquetting block 5 and the movement of the end part having a long pause, meanwhile, the front crank B24 and the front crank A10 drive the rear crank B31 and the rear crank A17 to reciprocate through the lower connecting rod 4 and the upper connecting rod 3 Swing, so as to drive the linear reciprocating movement of the rear movable needle seat 26 and the rear movable pressure block 12, and the end has a long-term pause movement, so as to realize the alternate positioning and clamping of the front and rear ends of the needle. When the crank is at 0 ~ 180° , the needle is fixed by the positioning clamp at the front end A, when the crank is at 180°~360°, the needle is fixed by the positioning clamp at the rear end C, so that threading can be achieved by alternately fixing the front and rear ends of the needle process.

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.

Claims (9)

1. A beaded cool pad beaded threading device, comprising upper and lower frames, characterized in that: the two side walls of the upper and lower frames are symmetrically provided with cam profiles, and the upper and lower frames are respectively provided with cam profiles. There are a movable clamping mechanism and a movable positioning mechanism, and the movable clamping mechanism and the movable positioning mechanism are connected with the active driving mechanism arranged on the frame. 2. The beaded threading device for a beaded cool pad according to claim 1, wherein the movable clamping mechanism is two groups of movable clamping mechanisms arranged on the front and rear sides of the upper frame, and the front The side movable clamping mechanism and the rear side movable clamping mechanism are connected together through an upper link. 3. The beaded threading device for a beaded cool pad according to claim 1, wherein the movable positioning mechanism is two groups of movable positioning mechanisms arranged on the front side and the rear side of the lower frame, and the front side moves The positioning mechanism and the rear movable positioning mechanism are connected together through the lower link. 4. The beaded threading device for a beaded cooling pad according to claim 1 or 2, characterized in that: said front group movable clamping mechanism includes a front movable pressing block arranged in a chute at the front side of the upper frame, so that The front movable pressure block is connected to one end of the front connecting rod AA through the front pin shaft BA, and the other end of the front connecting rod AA is connected to the front roller A which rolls in the cam profile on the side wall of the upper frame and the leading The block A is connected, and the front block A is movably connected with one end of the front crank A arranged in its guide groove, and the other end of the front crank A is connected with one end of the upper link through the front pin shaft CA; the rear group The movable clamping mechanism includes a rear movable briquetting block arranged in the chute at the rear side of the upper frame, the rear movable briquetting block is connected to one end of the rear connecting rod AA through the rear pin shaft BA, and the other end of the rear connecting rod AA One end is connected to the rear guide block A through the rear roller A rolling in the cam profile arranged on the other side wall of the upper frame, and the rear guide block A is movably connected to one end of the rear crank A arranged in its guide groove , the other end of the rear crank A is connected with the other end of the upper connecting rod through the rear pin shaft CA. 5. The beaded threading device for beaded cool pad according to claim 1 or 3, characterized in that: said front group movable positioning mechanism includes a front movable needle seat arranged in a chute at the front side of the lower frame, said The front movable needle seat is connected with one end of the front connecting rod AB through the front pin shaft BB, and the other end of the front connecting rod AB is arranged through the front roller B and the front guide block B rolling in the cam profile on the side wall of the lower frame. connected, the front guide block B is movably connected with one end of the front crank B set in its guide groove, and the other end of the front crank B is connected with one end of the lower connecting rod through the front pin shaft CB; the rear group is movably positioned The mechanism includes a rear movable needle seat located in the chute at the rear side of the lower frame. The rear movable needle seat is connected to one end of the rear connecting rod AB through the rear pin shaft BB, and the other end of the rear connecting rod AB is arranged The rear roller B that rolls in the cam profile on the other side wall of the lower frame is connected with the rear guide block B, and the rear guide block B is movably connected with one end of the rear crank B arranged in its guide groove. The other end of the crank B is connected with the other end of the lower connecting rod through the rear pin shaft CB. 6. The threading device for beaded cool pads according to claim 4, characterized in that: the front crank A is hinged to the side wall of the upper frame through the front pin AA, and the rear crank A is hinged through the rear pin AA is hinged with the other side wall of the upper frame. 7. The threading device for beaded cool pads according to claim 5, characterized in that: the front crank B is hinged to the side wall of the lower frame through the front pin AB, and the rear crank B is hinged through the rear pin AB is hinged with the other side wall of the lower frame. 8. The threading device for beaded cool pads according to claim 1, characterized in that: the active driving mechanism includes an active crank arranged on the lower frame, and the active crank is respectively connected to the lower frame via the lower pin shaft F. The rod C is connected to one end of the connecting rod D, the other end of the lower connecting rod C is hinged to the front crank B through the lower pin D, and the other end of the connecting rod D is respectively hinged to the upper frame through the upper pin F The upper flywheel is hinged with one end of the upper connecting rod C, and the other end of the upper connecting rod C is hinged with the front crank A through the upper pin D, and an eccentric hinge is adopted between the connecting rod D and the flywheel. 9. The beaded threading device for beaded cooling pads according to claim 4 or 5, characterized in that: the movable pressing block and the movable needle base are clamped together through male and female grooves.

Images