Rolling cutter assembly capable of being used for cutting silica gel into strips

Abstract

The hobbing cutter assembly comprises a first cutter set, a second cutter set and two supporting plates, the first cutter set comprises a first cutter shaft and a plurality of first blades arranged on the first cutter shaft in a sleeving mode at intervals, and the second cutter set comprises a second cutter shaft and a plurality of second blades arranged on the second cutter shaft in a sleeving mode at intervals. The second cutter set comprises a second cutter shaft parallel to the first cutter shaft and a plurality of second blades arranged on the second cutter shaft in a sleeving mode at intervals, the two ends of the first cutter shaft and the two ends of the second cutter shaft are rotationally connected with the two supporting plates correspondingly, and the edge of one side of any first blade is attached to the edge of the corresponding second blade. In any two adjacent first blades, one is attached to the left side face of the corresponding second blade, and the other one is attached to the right side face of the corresponding second blade. When the hobbing cutter assembly is applied to automatic rubber strip cutting equipment, the first blade and the second blade synchronously and reversely rotate, and sheet-shaped silica gel can be cut into a plurality of silica gel strips at a time under the shearing action of the two blades.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of roll cutting knife assemblies for silica gel slitting. BACKGROUND

[0002] In the production process of remote controller silica gel key, one process is to cut silica gel sheet into strips, after cutting silica gel into strips, silica gel sheet and part of key in a whole piece of silica key can be directly placed into mold to form, silica gel particles of other colors pre-added in mold are used to form other keys, and all keys are heat-fused and bonded on silica gel sheet to form blank of remote controller silica gel key. In the prior art, many devices for cutting silica gel sheet into strips can only cut one silica gel strip each time, and the working efficiency is low. SUMMARY

[0003] Therefore, the utility model aims at providing a kind of roll cutting knife assemblies for silica gel slitting, which can cut silica gel sheet into multiple silica gel strips at one time.

[0004] The utility model discloses a technical scheme for solving the technical problems:

[0005] A kind of roll cutting knife assemblies for silica gel slitting, including first knife group, second knife group and the two support plates of left and right arrangement, the first knife group includes first knife shaft, and multiple first blades are sleeved on the first knife shaft at intervals, the second knife group includes the second knife shaft parallel with the first knife shaft, and multiple second blades are sleeved on the second knife shaft at intervals, both ends of the first knife shaft are rotatably connected with two support plates respectively, both ends of the second knife shaft are rotatably connected with two support plates respectively, the second blade and the first blade one to one correspond, the edge of one side of any one first blade is attached to the edge of corresponding second blade, in any two adjacent first blades, one is attached to the left side of corresponding second blade, and the other is attached to the right side of corresponding second blade.

[0006] In a preferred embodiment of the utility model, the first blade and the second blade are both circular blades.

[0007] In a preferred embodiment of the utility model, the first knife shaft and the second knife shaft are connected by a transmission mechanism to enable the first knife shaft and the second knife shaft to rotate synchronously and reversely.

[0008] In a preferred embodiment of the utility model, the transmission mechanism includes a first gear sleeved on the first knife shaft and a second gear sleeved on the second knife shaft, the first gear is engaged with the second gear, and the pitch circle diameters of the first gear and the second gear are equal.

[0009] In a preferred scheme of the utility model, the first blade is coaxial with the first cutter shaft, and the second blade is coaxial with the second cutter shaft.

[0010] In a preferred scheme of the utility model, the first blade is eccentrically installed on the first cutter shaft, and the second blade is eccentrically installed on the second cutter shaft.

[0011] The utility model has the advantages of:

[0012] First, when the hobbing cutter assembly is applied to the automatic rubber strip cutting equipment, the first blade and the second blade rotate synchronously and reversely, and under the shearing action of the two blades, the sheet-shaped silica gel can be cut into a plurality of silica gel strips at one time.

[0013] Second, since the first blade and the second blade are mutually attached, an axial pressing force is generated at the mutual contact position therebetween. The above design makes about half of the first blade attached to the left side of the second blade, and about half of the first blade attached to the right side of the second blade. The axial pressing forces of the two parts of the first blade can be substantially cancelled out. The force acting on the second blade is the same as that acting on the first blade. Therefore, such a design can make all the first blades keep attached to the second blade, avoiding the occurrence of a gap between the first blade and the second blade and the difficulty in cutting the silica gel sheet.

[0014] Third, when the first blade and the second blade are both installed eccentrically, the cutting edges at the edges of the first blade and the second blade can also jump up and down during rotation, which can be used for cutting silica gel with high toughness. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a perspective view of the utility model;

[0016] Figure 2 is a front view of the utility model;

[0017] Figure 3 is Figure 2 an enlarged view of part A in FIG. 1;

[0018] Figure 4 is a structural schematic view when the first blade and the second blade are both installed concentrically with the corresponding cutter shafts;

[0019] Figure 5 is a structural schematic view when the first blade and the second blade are both installed eccentrically. DETAILED DESCRIPTION

[0020] The technical scheme of the utility model will be described clearly and completely below with reference to the drawings.

[0021] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly. In addition, the description of "preferred", "second preferred" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "preferred" and "second preferred" can explicitly or implicitly include at least one of the features.

[0022] Referring to Figures 1 to 5 The utility model provides a kind of roll cutting knife assembly for silica gel strip, including first knife group, second knife group and the two support plates 1 of left and right arrangement, first knife group includes first knife shaft 31, and multiple first blade 32 is intervally set on first knife shaft 31, second knife group includes the second knife shaft 41 parallel with first knife shaft 31, and multiple second blade 42 is intervally set on second knife shaft 41, two ends of first knife shaft 31 are rotatably connected with two support plates 1 respectively, two ends of second knife shaft 41 are rotatably connected with two support plates 1 respectively, second blade 42 and first blade 32 one to one correspondence, the side edge of any one first blade 32 is pasted with the edge of corresponding second blade 42, in any two adjacent first blade 32, one is pasted with the left side of corresponding second blade 42, and the other is pasted with the right side of corresponding second blade 42.

[0023] Preferably, first blade 32 and second blade 42 are both circular blades. The cutting edges of both are located at their edges. The number of first blade 32 and second blade 42 is equal, such as 10, 12, 15, 20, etc.

[0024] When the roll cutting knife assembly is applied to automatic rubber strip cutting equipment, first blade 32 and second blade 42 rotate synchronously and reversely, and under the shearing action of the two blades, the sheet-shaped silica gel can be cut into multiple silica gel strips at one time. In addition, since first blade 32 and second blade 42 are pasted with each other, an axial pressing force is generated at the place where they contact with each other. The above design makes about half of first blade 32 pasted with the left side of second blade 42, and about half of first blade 32 pasted with the right side of second blade 42, and the axial pressing forces of these two parts of first blade 32 can basically cancel each other out. The force condition of second blade 42 is the same as that of first blade 32, so this design can make all first blade 32 maintain the pasted state with second blade 42, avoiding the generation of gap between first blade 32 and second blade 42 and making it difficult to cut the silica gel sheet.

[0025] Specific arrangement can have the following two. 1, according to the order from left to right, wherein the first blade 32 with odd number of corresponding second blade 42 right side of the paste, the first blade 32 with even number of corresponding second blade 42 left side of the paste.2, according to the order from left to right, wherein the first blade 32 with odd number of corresponding second blade 42 left side of the paste, the first blade 32 with even number of corresponding second blade 42 right side of the paste.

[0026] In order to ensure that the first knife shaft 31 and the second knife shaft 41 synchronous reverse rotation, the first knife shaft 31 and the second knife shaft 41 through a transmission mechanism connected to make the first knife shaft 31 and the second knife shaft 41 can synchronous reverse rotation.

[0027] In a preferred embodiment of the utility model, transmission mechanism includes the first gear 21 of setting on the first knife shaft 31, and the second gear 22 of setting on the second knife shaft 41, first gear 21 with second gear 22 engagement and the diameter of their division circle is equal.

[0028] The first blade 32, second blade 42 can adopt the following two layout, first, the first blade 32 and the first knife shaft 31 coaxial, second blade 42 and the second knife shaft 41 coaxial.

[0029] The first blade 32 is eccentrically installed on the first knife shaft 31, and the second blade 42 is eccentrically installed on the second knife shaft 41. The axis P2 of the first blade 32 is parallel to the axis P1 of the first knife shaft 31, and the distance between them is 5-20mm, such as 10mm. The axis P4 of the second blade 42 is parallel to the axis P3 of the second knife shaft 41, and the distance between them is 5-20mm, such as 10mm. When both blades are installed eccentrically, the cutting edges of the first blade 32 and the second blade 42 can jump up and down during rotation, which can be used for cutting strong silicon gel.

[0030] The above is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by the utility model specification and the drawings, or direct or indirect application in other related technical fields is included in the patent protection range of the utility model.

Claims

1. A rotary cutter assembly for use in cutting silicone strips, characterized in that, The first cutter group comprises a first cutter shaft (31) and a plurality of first cutter blades (32) which are sleeved on the first cutter shaft (31) at intervals, the second cutter group comprises a second cutter shaft (41) which is parallel to the first cutter shaft (31) and a plurality of second cutter blades (42) which are sleeved on the second cutter shaft (41) at intervals, both ends of the first cutter shaft (31) are rotationally connected with two support plates (1) respectively, both ends of the second cutter shaft (41) are rotationally connected with two support plates (1) respectively, the second cutter blades (42) correspond to the first cutter blades (32) one by one, one side edge of any first cutter blade (32) is attached to the edge of the corresponding second cutter blade (42), one of any two adjacent first cutter blades (32) is attached to the left side of the corresponding second cutter blade (42), and the other is attached to the right side of the corresponding second cutter blade (42).

2. A rotary knife assembly for use in slitting a silicone sheet according to claim 1, wherein The first cutter blades (32) and the second cutter blades (42) are circular blades.

3. The rotary knife assembly for use in slitting a silicone sheet according to claim 1, wherein The first cutter shaft (31) and the second cutter shaft (41) are connected through a transmission mechanism so that the first cutter shaft (31) and the second cutter shaft (41) can synchronously and reversely rotate.

4. The rotary knife assembly for use in slitting a silicone sheet according to claim 3, wherein The transmission mechanism comprises a first gear (21) which is sleeved on the first cutter shaft (31) and a second gear (22) which is sleeved on the second cutter shaft (41), the first gear (21) is engaged with the second gear (22), and the pitch circle diameters of the first gear (21) and the second gear (22) are equal.

5. The rotary knife assembly for use in slitting a silicone sheet according to claim 2, wherein The first cutter blades (32) are coaxial with the first cutter shaft (31), and the second cutter blades (42) are coaxial with the second cutter shaft (41).

6. The roll cutter assembly for use in cutting strips of silicone rubber of claim 2, wherein, The first cutter blades (32) are eccentrically installed on the first cutter shaft (31), and the second cutter blades (42) are eccentrically installed on the second cutter shaft (41).

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