A glove knitting machine cam device

Abstract

The present invention relates to the field of glove knitting machines, and particularly to a glove knitting machine cam device comprising a cam base plate, on which are disposed an elastic cam, an elastic auxiliary cam, and a density cam. The elastic cam is disposed below the elastic auxiliary cam, and the density cam is disposed to the side of the elastic auxiliary cam. The density cam comprises a compression slope and a compression plane, and the density cam is capable of expansion and contraction relative to the cam base plate. The side of the density cam proximal to the elastic auxiliary cam is the compression slope, and the sides of the compression slope and the compression plane together form the needle base of the density cam. When the density limit point of the elastic auxiliary cam is higher than the needle base of the density cam, the butt of the knitting needle passes through the limit point and then the compression slope, causing the density cam to retract relative to the cam base plate. This solution not only prevents elastic thread breakage during double-sided knitting, but also improves production efficiency.

Description

Technical Field

[0001] The present invention relates to the field of glove knitting machines, and in particular to a cam device for a glove knitting machine. Background Art

[0002] The basic structure of the computer glove machine is as follows: between the left and right bases, there are front and rear needle beds, movable knitting needles are set in the needle grooves of the needle beds, and cam bases are set on the split front and rear heads, which move left and right with the heads; because various cams are set on the cam bases, the needle selection, starting and clearing actions are performed through the interaction between the cams and the butts of the knitting needles (combination needles) to complete various knitting functions.

[0003] The cylindrical portion of a knitted glove's palm and fingers is generally referred to as normal knitting, while the wrist requires the introduction of elastic yarn for knitting, generally referred to as elastic knitting. The density of the loops in normal and elastic knitting is controlled by their respective cams, but the required density differs. In commonly used knitted gloves, the downward pressure exerted by the density cams controlling normal knitting on the cam base plate must be greater than that required for elastic knitting. This limitation did not pose a technical problem in previous unidirectional knitting (i.e., one of the front and rear looms is idle and does not participate in knitting during a single pass). However, with the development of double-sided knitting technology, the looms now involve casting during each pass, with two casting cams and two density cams installed on a single cam base plate. Under these conditions, the downward pressure exerted by the density cams on the same side as the elastic cam (used to introduce the elastic yarn) affects the downward pressure during elastic knitting, increasing the downward pressure of the needles engaging the elastic yarn, which can lead to breakage of the elastic yarn or uncontrollable size and tightness of the glove's ribbing.

[0004] Therefore, in double-sided knitting, it is necessary to consider that when knitting elastic bands, the elastic bands are easily broken or the tightness of the ribbing parts of the gloves cannot be controlled due to the downward pressure of the density triangle.

[0005] The existing solution to this problem is to set up an additional driving force in the drive of the density triangle to actively control its up and down movement. This can drive the density triangle to rise and make way when knitting the elastic band, so that its downward pressure amplitude meets the knitting requirements. When knitting the same batch of gloves, the density triangle of single-sided knitting only needs to adjust the up and down position before starting knitting, and does not need to be moved frequently during knitting. Therefore, this method increases the burden on the machine head during operation and increases production costs.

[0006] In view of the above reasons, the inventor conducted further research and developed a glove knitting machine cam device, which resulted in the present invention. Summary of the Invention

[0007] The object of the present invention is to provide a cam device for a glove knitting machine, which avoids the breakage of elastic threads during double-sided knitting and improves production efficiency.

[0008] In order to achieve the above object, the technical solution of the present invention is as follows:

[0009] A glove knitting machine cam device includes a cam base plate, on which are arranged elastic cams, elastic auxiliary cams, and density cams; wherein,

[0010] The density triangle includes a compression slope and a compression plane. The elastic triangle is set below the elastic auxiliary triangle, and the density triangle is set on the side of the elastic auxiliary triangle. The density triangle can be extended and retracted relative to the triangle base. At the same time, the side of the density triangle close to the elastic auxiliary triangle is a compression slope. The compression slope and the side of the compression plane together form the needle bottom edge of the density triangle.

[0011] When the density limit point of the elastic auxiliary triangle is higher than the needle bottom edge of the density triangle, the butt of the knitting needle passes through the density limit point and then passes through the compression slope, causing the density triangle to retract relative to the triangle bottom plate.

[0012] The same side in the above technical solution is based on the upper Zhongshan triangle located in the middle of the triangular base plate, and its left or right side can be called the same side;

[0013] The density limit point of the above-mentioned elastic auxiliary triangle refers to the lowest point when the elastic triangle starts to needle, rises to the highest point to hook the thread, and then descends (this lowest point is not "unique", it can also be a continuous low point forming an "edge"), which determines the downward pressure amplitude during elastic knitting; the needle bottom edge of the density triangle determines the downward pressure amplitude during normal knitting (the downward pressure amplitude is the amplitude of the thread pulled downward after the needle hooks the thread); here, "the density limit point is higher than the needle bottom edge of the density triangle" means that the downward pressure amplitude of the elastic auxiliary triangle is smaller than the downward pressure amplitude of the density triangle;

[0014] The "compression plane" here does not refer to an absolutely flat and smooth surface, but is mainly used to distinguish it from an inclined compression slope;

[0015] Theoretically, the density limit point of the elastic auxiliary triangle may be at the same height as the needle bottom edge of the density triangle. At this time, there is no need to press the density triangle into the triangle bottom plate when the needle is knitting. However, in current glove knitting requirements, the density limit point is often higher than the needle bottom edge. Therefore, it is generally necessary to pass through the density limit point first and then enter the compression slope to press the density triangle into the triangle bottom plate (in the prior art, if the low point of the density triangle is used as the density limit point, the density triangle needs to be raised).

[0016] Furthermore, the compression slopes of the elastic auxiliary triangle and the density triangle partially overlap in a space perpendicular to the triangle bottom plate, and the density limiting point of the elastic auxiliary triangle is located on the compression slope.

[0017] Since the compression slope is designed as a slope, a part of the compression slope can be set between the elastic auxiliary triangle and the triangle base plate, so that the knitting needle can immediately act on the density triangle when passing through the density limit point, thereby improving the weaving efficiency; and the "density limit point is located on the compression slope" here means that the triangle base plate is the "bottom", the compression slope is above the triangle base plate, and the density limit point is above the compression slope.

[0018] Furthermore, the density limit point of the elastic auxiliary triangle is its lowest point.

[0019] When knitting rubber bands, start from the rubber band triangle, follow the needle path between the rubber band auxiliary triangle and the rubber band triangle, and then pass through the density limit point. The density limit point is the downward pressure amplitude of the rubber band knitting; the lowest point here refers to the entire rubber band auxiliary triangle, not just the "downward pressure channel" of the rubber band auxiliary triangle.

[0020] Furthermore, a protrusion is provided below the needle-moving bottom edge of the density triangle, so that a needle-moving channel is formed at the bottom of the density triangle.

[0021] The needle movement channel can make the needle movement more stable when the density triangle is working.

[0022] Furthermore, the density cam is arranged in the density cam seat, and a return spring is arranged between the density cam and the density cam seat. When the needle butt passes through the compression inclined surface, the return spring is compressed.

[0023] The density cam is kept in an extended state by a return spring. When the density cam is acted upon by the butt of the knitting needle, the return spring is compressed and the cam is reset after the butt leaves.

[0024] Furthermore, the return spring is arranged in the spring seat, and the spring seat is protruded on the density triangle seat.

[0025] Furthermore, the density triangle seat is arranged in the mounting plate, the mounting plate is arranged in the triangular bottom plate, and the thickness of the mounting plate is greater than the thickness of the triangular bottom plate.

[0026] Since the density cam needs to be set to be movable and needs to cooperate with the cam seat, the overall thickness of the mounting plate must be greater than the commonly used cam base plate; if the cam base plate and the mounting plate are made into a structure with the same thickness, the weight of the entire cam base plate will be greatly increased, resulting in an increase in the load when the machine head moves left and right, which is not conducive to production.

[0027] Furthermore, the overall outline of the density triangle is a quadrilateral structure, one side of which is a compressed slope from thin to thick, and the other side is a compressed plane.

[0028] Furthermore, one side of the density triangle is connected to a side of the upper Zhongshan triangle.

[0029] Furthermore, a limiting groove is provided on the top of the upper Zhongshan triangle.

[0030] The limiting groove is used to assist in limiting the needle butt above the compound needle (the knitting needle is also a compound needle, which includes multiple needle butts and is used for needle selection, weaving and other functions. The setting of the knitting needle butt is prior art).

[0031] After adopting the above scheme, the present invention has the following advantages compared with the prior art:

[0032] By designing the entire density triangle to avoid it, the triangle device does not need to pass through the bottom edge of the needle of the density triangle when weaving rubber bands, thereby avoiding the rubber band line from being too tight and breaking. The overall structure is simple, it is not an active avoidance drive, the production cost is low, and the load on the machine head is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the elastic braiding of the first triangular device of Example 1;

[0034] Figure 2 This is a schematic diagram of the first cam device in normal knitting according to Example 1;

[0035] Figure 3 is a schematic diagram of the second triangular device of Example 1;

[0036] Figure 4 is a schematic diagram of the density triangle applied to the left side of the triangle device;

[0037] Figure 5 is a schematic diagram of the density triangle applied to the right side of the triangle device;

[0038] Figure 6 This is a schematic diagram of the coordination between the density triangle and the mounting plate;

[0039] Figure 7 This is one of the cross-sectional views of the density triangle and the density triangle seat;

[0040] Figure 8 This is the second cross-sectional view of the density triangle and the density triangle seat;

[0041] Figure 9 This is a schematic diagram of the relative positions of the elastic auxiliary triangle and the movable density triangle;

[0042] Figure 10 is a schematic diagram of the triangular device of Example 2;

[0043] Description of labels

[0044] Triangular base plate 1,

[0045] Upper Zhongshan cam 11, limiting groove 111, lower Zhongshan cam 12, needle raising cam 13,

[0046] Movable density triangle 2, compression slope 21, compression plane 22, needle bottom edge 23,

[0047] Bump 24, elastic auxiliary triangle 3, density limit point 31, elastic triangle 4,

[0048] Mounting plate 5, slide 51, density triangle seat 6, spring seat 61, return spring 62,

[0049] Limiting plate 7. DETAILED DESCRIPTION

[0050] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0051] In the following embodiments, it is the cam device (machine head) that actually moves laterally, while the knitting needles remain stationary in the horizontal direction of the glove knitting machine. However, in the illustrations, the cam base plate is used as a reference, so it is equivalent to the knitting needles moving.

[0052] Example 1:

[0053] In the bidirectional knitting of a glove machine, two staggered heads can be set up for synchronous knitting. The staggered synchronous knitting technology can be referred to the prior patent "CN202210035315.4".

[0054] like Figure 1 、 3 As shown, in this embodiment, it includes a first triangular device (set on the first head) and a second triangular device (set on the second head), wherein:

[0055] The first cam assembly includes a cam base 1, with an upper Zhongshan cam 11 and a lower Zhongshan cam 12 positioned in the middle. A stitching cam 13 is positioned on either side of the lower Zhongshan cam 12. The upper Zhongshan cam 11 has a limiting groove 111 at its top and a density cam on each side. In this embodiment, the density cam on the left side of the cam base is a movable density cam 2 (as opposed to the density cams in the prior art, which can only move up and down relative to each other). This movable density cam 2 is a quadrilateral in structure, with a compression slope 21 extending from thin to thick on its left side. A compression plane 22 is positioned to the right of the compression slope 21, and a portion of this compression slope 21 is positioned below the elastic auxiliary cam 3 further to the left.

[0056] by Figure 1As a reference to the position relationship in the figure, the density limit point 31 of the elastic auxiliary triangle 3 is higher than the needle bottom edge 23 of the movable density triangle 2, that is, according to Figure 1 As shown by the dotted line in the figure, when knitting rubber band, the knitting needle starts from the rubber band triangle 4 on the left side, and is restricted by the rubber band auxiliary triangle 3 to be raised and lowered, and then moves to the right from the density limit point 31. During this process, it passes through the surface of the compression slope 21 and the compression plane 22, thereby pressing the movable density triangle 2 into the triangle bottom plate 1. The knitting needle continues to move from the needle-raising triangle 13 on the left side, and after moving along the needle path between the upper and lower Zhongshan triangles 12, it is restricted by the density triangle on the right side and moves from its bottom edge.

[0057] by Figure 2 As shown by the dotted line in the figure, since the movable density cam 2 is not subjected to the pressure of the needle butt at this time, it is in a normal working state, and the knitting needle starts from the needle cam 13 on the right, and after the needle passage between the upper and lower Zhongshan cams 12, it passes through the needle bottom edge 23 of the movable density cam 2 under the restriction of the movable density cam 2 on the left; as a preferred embodiment, reference Figure 5 、 9 As shown, a protrusion 24 is further provided below the movable density cam 2, so that a needle moving channel is formed at the bottom of the movable density cam 2.

[0058] Figure 3 What is shown is a schematic diagram of the distribution of each triangle of the second triangle device. Compared with the triangles of the first triangle device, it only sets the movable density triangle 2 to the right to meet the requirements of staggered double-sided weaving. The other operating principles are consistent with the first triangle device.

[0059] Figure 4-8 The present invention shows a structure for the movable density cam 2 that can be applied to the first embodiment. The structure includes a mounting plate 5, a chute 51 is provided on the mounting plate 5, a density triangle seat 6 is provided in the chute 51, and the movable density cam 2 is provided in the density triangle seat 6. Since the movable density cam 2 needs to have a telescopic function, a cylindrical spring seat 61 is provided in the corresponding position of the density triangle seat 6. The spring seat 61 needs to have a certain depth to ensure that a reset spring 62 can be provided inside and there is sufficient space for movement. The movable density cam 2 can be telescopic relative to the density triangle seat 6. Figure 7 、 8 When the knitting needle butt passes through the compression slope 21 of the movable density cam 2, the movable density cam 2 is pressed into the density cam seat 6, and the return spring 62 is compressed. When the knitting needle butt leaves, the return spring 62 restores the movable density cam 2 to a normal working state.

[0060] The slide groove 51 is used for the density triangle seat 6 to move up and down. The density triangle seat 6 is controlled by a pressure rod and a tension spring. This control method is consistent with the existing technology.

[0061] The setting structure of the aforementioned movable density triangle 2 is that the overall thickness of the mounting plate 5 is greater than the commonly used triangular base plate during actual processing; if the triangular base plate and the mounting plate 5 are made into a structure with the same thickness, the weight of the entire triangular base plate will be greatly increased, resulting in an increase in the load when the machine head moves left and right, which is not conducive to production; therefore, the mounting plate 5 can be processed into a structure independent of the triangular base plate, and then the corresponding space is reserved on the triangular base plate, and the mounting plate 5 is directly set in the triangular base plate, and the density triangle seat 6 is restricted to the slide groove 51 by the limit plates 7 on both sides, so that it can only move in the slide groove 51.

[0062] Example 2:

[0063] like Figure 10 As shown, this structure is an improvement based on the double-sided weaving process with two heads running synchronously in the prior patent CN117512864A of the applicant of this case. It can also change the density triangle on one side into a movable density triangle consistent with the embodiment 1, and its normal weaving and elastic weaving principles are consistent with the embodiment.

[0064] The above are only specific embodiments of the present invention. At the same time, all words such as "upper, lower, left, right, middle" involved in the present invention are for reference only and are not absolute limitations. Any non-substantial changes made using the present invention shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A glove knitting machine cam device, characterized by: It includes a triangular bottom plate, on which are arranged a rubber triangle, a rubber auxiliary triangle, and a density triangle; wherein, The elastic triangle is set below the elastic auxiliary triangle, and the density triangle is set on the side of the elastic auxiliary triangle. The density triangle includes a compression slope and a compression plane, and the density triangle can be extended and retracted relative to the triangle base. At the same time, the side of the density triangle close to the elastic auxiliary triangle is the compression slope. The sides of the compression slope and the compression plane together constitute the needle base of the density triangle. When the density limit point of the elastic auxiliary triangle is higher than the needle bottom edge of the density triangle, the butt of the knitting needle passes through the density limit point and then passes through the compression slope, causing the density triangle to retract relative to the triangle bottom plate; The density limit point of the aforementioned elastic auxiliary triangle refers to the lowest point or edge when the elastic triangle starts to be stitched, rises to the highest point to hook the line, and then descends. It determines the downward pressure amplitude when the elastic is knitted.

2. The glove knitting machine cam device according to claim 1, characterized in that: The compression slopes of the elastic auxiliary triangle and the density triangle partially overlap in a space perpendicular to the triangle bottom plate, and the density limiting point of the elastic auxiliary triangle is located on the compression slope.

3. The glove knitting machine cam device according to claim 1, characterized in that: The density limit point of the elastic auxiliary triangle is its lowest point.

4. The glove knitting machine cam device according to claim 1, characterized in that: A protrusion is further provided below the needle running bottom edge of the density triangle, so that a needle running channel is formed at the bottom of the density triangle.

5. The glove knitting machine cam device according to claim 1, characterized in that: The density cam is arranged in the density cam seat, and a return spring is arranged between the density cam and the density cam seat. When the needle butt passes through the compression inclined surface, the return spring is compressed.

6. The glove knitting machine cam device according to claim 5, characterized in that: The return spring is arranged in the spring seat, and the spring seat is protrudingly arranged on the density triangular seat.

7. The glove knitting machine cam device according to claim 1, characterized in that: The density triangle seat is arranged in the mounting plate, the mounting plate is arranged in the triangular bottom plate, and the thickness of the mounting plate is greater than the thickness of the triangular bottom plate.

8. The glove knitting machine cam device according to claim 1, characterized in that: The overall outline of the density triangle is a quadrilateral structure, one side of which is a compressed slope from thin to thick, and the other side is a compressed flat surface.

9. The glove knitting machine cam device according to claim 1, characterized in that: One of the sides of the density triangle is connected to the side of the upper Zhongshan triangle.

10. The glove knitting machine cam device according to claim 9, characterized in that: A limiting groove is provided on the top of the upper Zhongshan triangle.

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