Laser cutting apparatus

Abstract

The present application discloses a laser cutting device for cutting a protective layer of a cable, comprising: a laser device configured to provide a laser beam for cutting; a clamping device configured to clamp the protective layer which is vertically unfolded; the clamping device forms a through hole after being closed, the cable extends in the through hole; the clamping device comprises a protection block, the protection block clamps the outer periphery of the cable after the clamping device is closed; and a control device designed to control the laser beam to project to the through hole and cut off the protective layer. The laser cutting device is not easy to damage the cable when cutting the protective layer of the cable.

Description

TECHNICAL FIELD

[0001] The present application relates to a laser cutting device, belonging to the technical field of cable processing. BACKGROUND

[0002] Generally, a cable includes a wire, a protective layer and an outer sheath from inside to outside. The protective layer is a braided layer or a bulletproof wire, etc. When the cable needs to be assembled (such as connected to a connector), the outer sheath will be cut off, and the protective layer also needs to be cut to a target length.

[0003] At present, the cutting of the protective layer generally adopts three ways of manual cutting, stamping cutting and laser cutting. Manual cutting has problems of being greatly affected by subjective factors, poor operation consistency, low yield, long time period, etc.; stamping cutting has problems of easy residue and tool wear (which further affects the yield), etc.; compared with the above, the problems can be better solved or alleviated by laser cutting. However, at present, the laser cutting is to reversely attach the protective layer to the outer periphery of the outer sheath, and the laser cuts the protective layer along the radial direction of the cable. When the protective layer is cut in this way, the cable is easy to be damaged. SUMMARY

[0004] The purpose of the present application is to provide a laser cutting device which is not easy to damage the cable when cutting the protective layer of the cable.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme: a laser cutting device for cutting the protective layer of a cable; comprising: a laser device configured to provide a laser beam for cutting; a clamping device configured to clamp the protective layer which is vertically unfolded; the clamping device forms a through hole after being closed, and the cable extends in the through hole; the clamping device includes a protective block, and the protective block clamps the outer periphery of the cable after the clamping device is closed; and a control device designed to control the laser beam to be projected into the through hole to cut off the protective layer.

[0006] As a further improved technical scheme of the present application, each protective block has a body part and an arc plate part extending outward from the body part, and the arc plate part encloses a barrel part wrapping the cable after the clamping device is closed, and there is a groove between the outer periphery of the barrel part and the through hole; the laser beam is projected into the groove to cut off the protective layer.

[0007] As a further improved technical scheme of the present application, the clamping device includes at least one set of clamping plates; one set of the clamping plates forms a through hole after being closed; one set of the clamping plates is provided with one set of the protective blocks, and the body part is fixed to the clamping plate.

[0008] As a further improved technical solution of the present application, one set of the clamping plates comprises two first clamping plates of the same structure and arranged oppositely and two second clamping plates of the same structure and arranged oppositely; the first clamping plate has a first body part, a first inverted V-shaped groove part and a first V-shaped guide groove part; the groove cavity of the first inverted V-shaped groove part penetrates through the first body part and opens towards the second clamping plate, the first inverted V-shaped groove part comprises a first inclined groove wall, a second inclined groove wall and a first arc-shaped wall extending between the first inclined groove wall and the second inclined groove wall; the first V-shaped guide groove part comprises a first guide inclined surface and a second guide inclined surface; the second clamping plate has a second body part, a first V-shaped groove part and a first inverted V-shaped guide groove part; the groove cavity of the first V-shaped groove part penetrates through the second body part and opens towards the first clamping plate, the first V-shaped groove part comprises a third inclined groove wall, a fourth inclined groove wall and a second arc-shaped wall extending between the third inclined groove wall and the fourth inclined groove wall; the first inverted V-shaped guide groove part comprises a third guide inclined surface and a fourth guide inclined surface; after the clamping device is closed, the first inclined groove wall abuts against the fourth guide inclined surface, the second inclined groove wall abuts against the third guide inclined surface, the first guide inclined surface abuts against the fourth inclined groove wall, the second guide inclined surface abuts against the third inclined groove wall, and the first arc-shaped wall and the second arc-shaped wall cooperate to define the through hole.

[0009] As a further improved technical solution of the present application, one set of the clamping plates comprises two first clamping plates of the same structure and arranged oppositely and two second clamping plates of the same structure and arranged oppositely; the first clamping plate has a first body part, a first inverted V-shaped groove part and a first V-shaped guide groove part; the groove cavity of the first inverted V-shaped groove part penetrates through the first body part and opens towards the second clamping plate, the first inverted V-shaped groove part comprises a first inclined groove wall, a second inclined groove wall and a first arc-shaped wall extending between the first inclined groove wall and the second inclined groove wall; the first V-shaped guide groove part comprises a first guide inclined surface and a second guide inclined surface; the second clamping plate has a second body part, a first V-shaped groove part and a first inverted V-shaped guide groove part; the groove cavity of the first V-shaped groove part penetrates through the second body part and opens towards the first clamping plate, the first V-shaped groove part comprises a third inclined groove wall, a fourth inclined groove wall and a second arc-shaped wall extending between the third inclined groove wall and the fourth inclined groove wall; the first inverted V-shaped guide groove part comprises a third guide inclined surface and a fourth guide inclined surface; after the clamping device is closed, the first inclined groove wall abuts against the fourth guide inclined surface, the second inclined groove wall abuts against the third guide inclined surface, the first guide inclined surface abuts against the fourth inclined groove wall, the second guide inclined surface abuts against the third inclined groove wall, and the first arc-shaped wall and the second arc-shaped wall cooperate to define the through hole.

[0010] As a further improved technical solution of the present application, the clamping device further comprises a first linear drive mechanism, a second linear drive mechanism, a first clamping jaw cylinder and a second clamping jaw cylinder; the moving end of the first linear drive mechanism is fixedly connected with the cylinder body of the first clamping jaw cylinder; each clamping jaw of the first clamping jaw cylinder is fixedly provided with two first clamping plates through a connecting plate; the moving end of the second linear drive mechanism is fixedly connected with the cylinder body of the second clamping jaw cylinder; each clamping jaw of the second clamping jaw cylinder is fixedly provided with two second clamping plates through a connecting plate.

[0011] As a further improved technical solution of the present application, it further comprises a first blowing mechanism; the first blowing mechanism comprises two blowing blocks, which are fixed on the two sides of the first clamping jaw cylinder respectively; the inside of each blowing block comprises at least a first blowing channel and a second blowing channel; the first blowing channel is configured to guide gas to the clamping surface of the first clamping plate and the second clamping plate located on one side of the protective layer; the second blowing channel is configured to guide gas to the clamping surface of the first clamping plate and the second clamping plate located on the other side of the protective layer.

[0012] As a further improved technical solution of the present application, it further comprises a second blowing mechanism; the second blowing mechanism comprises a copper pipe, which is configured to guide gas to the position where the laser beam is cutting.

[0013] As a further improved technical solution of the present application, the laser device comprises a laser, a laser beam deflection mechanism, a third linear drive mechanism and a fourth linear drive mechanism; the laser is used to generate the laser beam, the laser beam deflection mechanism is used to deflect the laser beam to achieve ring cutting of the vertically expanded protective layer, and the third linear drive mechanism and the fourth linear drive mechanism are used to adjust the matching of the cutting position of the laser beam and the protective layer in two dimensions.

[0014] As a further improved technical solution of the present application, it further comprises a product carrier; the product carrier is configured to drive the cable to approach or move away from the clamping device.

[0015] Compared with the prior art, in the laser cutting device disclosed by the present application, the laser is projected to the vertically expanded protective layer to cut off the protective layer, the track of the laser does not intersect with the cable, and the cable is less affected and not easy to be damaged. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of an illustrative embodiment of the laser cutting device of the present application from one angle (not including the control device).

[0017] Figure 2is a structural schematic diagram of the laser cutting device of the present application in another angle of the illustrated embodiment (not including the control device).

[0018] Figure 3 is a structural schematic diagram of the product carrier (carrying the cable) in the illustrated embodiment of the present application.

[0019] Figure 4 is a structural schematic diagram of the laser device in the illustrated embodiment of the present application.

[0020] Figure 5 is a right view schematic diagram of the clamping device, the first horizontal support plate, the second horizontal support plate and the blowing copper pipe in the illustrated embodiment of the present application.

[0021] Figure 6 is a structural schematic diagram of the clamping device and the first blowing mechanism in the illustrated embodiment of the present application.

[0022] Figure 7 is a structural schematic diagram of the pair of first clamping plates, the pair of second clamping plates and the protection block in the illustrated embodiment of the present application.

[0023] Figure 8 is a front view schematic diagram of the pair of first clamping plates, the pair of second clamping plates and the protection block in the illustrated embodiment of the present application.

[0024] Figure 9 in a is a right view schematic diagram of the pair of first clamping plates, the pair of second clamping plates and the protection block in the illustrated embodiment of the present application in the state of the clamping device not clamping; b is a right view schematic diagram of the pair of first clamping plates, the pair of second clamping plates and the protection block in the state of the clamping device clamping.

[0025] Figure 10 is an exploded schematic diagram of the pair of first clamping plates, the pair of second clamping plates and the protection block in the illustrated embodiment of the present application.

[0026] Figure 11 Figure 10 in the right view schematic diagram of the first clamping plate located on the left (also Figure 10 in the left view schematic diagram of the first clamping plate located on the right).

[0027] Figure 12 is Figure 10 in the left view schematic diagram of the second clamping plate located on the left (also Figure 10 in the right view schematic diagram of the second clamping plate located on the right).

[0028] Figure 13 is a structural schematic diagram of the first protection block in the illustrated embodiment of the present application.

[0029] Figure 14 is a structural schematic diagram of the second protection block in the illustrated embodiment of the present application.

[0030] Figure 15 Fig. 1 is a schematic view of the structure of a blow block in an embodiment of the present application.

[0031] Figure 16 Fig. 1 is a schematic view of the structure of a blow block in an embodiment of the present application. DETAILED DESCRIPTION

[0032] The exemplary embodiments of the present application will be described in detail below with reference to the attached drawings. If there are several embodiments, the features of the embodiments can be combined with each other unless they conflict. When the description refers to the drawings, the same numbers on different drawings represent the same or similar elements unless otherwise indicated. The description of the exemplary embodiments described in the following exemplary embodiments does not represent all embodiments consistent with the present application; rather, they are merely examples of devices, products and / or methods consistent with some aspects of the present application as recited in the claims of the present application.

[0033] The terms used in the present application are for the purpose of describing the specific embodiments only and are not intended to limit the scope of the protection of the present application. The singular forms "a," "an," and "the" used in the specification and claims of the present application are also intended to include the plural forms unless the context clearly indicates otherwise.

[0034] It should be understood that the use of terms such as "first", "second", and the like used in the specification and claims of the present application do not denote any order, quantity, or importance, but are used to distinguish features. Also, "one" or "a" or the like does not denote a quantity limitation, but means that at least one exists. Unless otherwise indicated, the terms "front", "back", "up", "down", and the like used in the present application are used for convenience of description and are not limited to a particular position or spatial orientation. The terms "include" or "comprise" and the like are open-ended expressions that are intended to mean that the elements recited after the terms "include" or "comprise" and equivalents thereof are encompassed by the terms "include" or "comprise" and equivalents thereof, and are not limited to the elements recited after the terms "include" or "comprise" and equivalents thereof. If "several" appears in the present application, it means two or more.

[0035] The A1-A1 direction, the A2-A2 direction, and the A3-A3 direction in the drawings are perpendicular to each other. For ease of understanding, hereinafter, the A1-A1 direction will be described as the left-right direction, the A2-A2 direction will be described as the front-rear direction, and the A3-A3 direction will be described as the up-down direction.

[0036] The present application discloses a laser cutting device 100 for cutting a protective layer 201 of a cable 200. A specific embodiment of the present application is shown in the accompanying drawings. The present application will be described below in conjunction with the drawings.

[0037] Referring to Figure 1 In the illustrated embodiment, the laser cutting device 100 comprises a support frame 1, a clamping device 2, a laser device 3, a blowing device 4, a product carrier 5, and a control device (not shown).

[0038] Referring to Figure 2 The support frame 1 comprises a base plate 11, a first vertical support plate 12, a second vertical support plate 13, a first horizontal support plate 14, and a second horizontal support plate 15.

[0039] As shown in the drawings, the first vertical support plate 12 and the second vertical support plate 13 are fixed to the base plate 11 opposite to each other (see Figure 2 , A2-A2 direction, the side facing the observer is the back). The first horizontal support plate 14 and the second horizontal support plate 15 are opposite to each other, and the first horizontal support plate 14 and the second horizontal support plate 15 are both fixed to the first vertical support plate 12 and the second vertical support plate 13.

[0040] In order to make the overall structure of the support frame 1 more stable, the support frame 1 further comprises a connecting rod 16. The connecting rod 16 is fixedly connected to the upper middle part of the first vertical support plate 12 and the upper middle part of the second vertical support plate 13.

[0041] The clamping device 2 is configured to clamp the protective layer 201 which is vertically unfolded. Here, "vertically unfolded" means that the protective layer 201 is unfolded vertically to the extension direction of the cable 200. Mainly referring to Figure 6 The clamping device 2 comprises a first clamping mechanism 21 and a second clamping mechanism 22 which are arranged opposite to each other.

[0042] The first clamping mechanism 21 comprises a first linear drive 211, a first connecting plate 212, a first reinforcing plate 213, a first clamping drive 214, a first clamping plate 215, and a first clamping plate 216.

[0043] In the illustrated embodiment, the first linear drive mechanism 211 is a cylinder, which will be referred to as a first cylinder below. The cylinder body of the first cylinder is fixed to the first horizontal support plate 14 (see Figure 1)。The piston rod of the first cylinder is movable in the A3-A3 direction (i.e., the up-down direction). The piston rod of the first cylinder is fixedly connected with the first connecting plate 212. The first reinforcing plate 213 has two mutually perpendicular arm plates, which are fixedly connected with the slide table of the first cylinder and the first connecting plate 212 respectively, thereby enhancing the structural stability and improving the mounting precision.

[0044] It should be understood that, in other embodiments of the present application, the first linear driving mechanism 211 can also adopt other structures such as an electric cylinder.

[0045] In the illustrated embodiment, the first clamping driving member 214 is a jaw cylinder, which will be referred to as the first jaw cylinder hereinafter. The cylinder body of the first jaw cylinder is fixed to the lower surface of the first connecting plate 212. Two jaws of the first jaw cylinder are fixedly connected with a first clamping plate 215 respectively. Two first clamping plates 215 are arranged opposite to each other, and when the first jaw cylinder is clamped, the two first clamping plates 215 are close to each other.

[0046] In the illustrated embodiment, the first clamping mechanism 21 includes four first clamping plates 216, which are identical in structure and arranged in two pairs. The first clamping plates 216 in each pair are arranged opposite to each other and fixed to the two first clamping plates 215 respectively. When the first jaw cylinder is clamped, the first clamping plates 216 in each pair are close to each other and clamp the upper side of the protective layer 201. One of the first clamping plates 216 will be described in detail hereinafter.

[0047] Referring to Figures 7 to 11 The first clamping plate 216 includes a first body portion 2161, a first inverted V-shaped groove portion 2162, and a first V-shaped guide groove portion 2163.

[0048] The cavity (hereinafter referred to as the first cavity) 2162a of the first inverted V-shaped groove portion 2162 extends through the first body portion 2161 in the A1-A1 direction (i.e., the left-right direction), and the first cavity 2162a of the first inverted V-shaped groove portion 2162 is open to the second clamping plate 226 opposite to it. The first inverted V-shaped groove portion 2162 includes a first inclined groove wall 2162b, a second inclined groove wall 2162c, and a first arc-shaped wall 2162d. The first arc-shaped wall 2162d extends between the first inclined groove wall 2162b and the second inclined groove wall 2162c. When viewed from the left side or the right side of the first clamping plate 216, the first inverted V-shaped groove portion 2162 is substantially in the shape of an inverted V.

[0049] The first V-shaped guiding groove 2163 comprises two unconnected groove cavities (hereinafter referred to as second groove cavities) 2163a and unconnected first guiding slope 2163b and second guiding slope 2163c.

[0050] When viewed from the left side (or right side) of the first clamping plate 216, the extension lines of the first guiding slope 2163b and the second guiding slope 2163c intersect to form a "V" shape.

[0051] In addition, the first clamping plate 216 further comprises a first mounting hole 2164 and a second mounting hole 2165.

[0052] The first mounting hole 2164 penetrates the first clamping plate 216 along the A1-A1 direction.

[0053] The second mounting hole 2165 also penetrates the first clamping plate 216 along the A1-A1 direction. Relatively, the first mounting hole 2164 is located on the upper side of the first clamping plate 216, and the second mounting hole 2165 is located on the lower side of the first clamping plate 216.

[0054] A bolt penetrates the first clamping plate 215 and the first mounting hole 2164 to fix the first clamping plate 216 to the first clamping plate 215.

[0055] A pair of first clamping plates 216 are arranged oppositely. When the first clamping jaw cylinder is clamped, a pair of first clamping plates 216 are close to each other to clamp the upper side of the protective layer 201 between them.

[0056] Referring to Figure 6 , similarly, the second clamping mechanism 22 comprises a second linear driving member 221, a second connecting plate 222, a second reinforcing plate 223, a second clamping driving member 224, a second clamping plate 225 and a second clamping plate 226.

[0057] In the illustrated embodiment, the second linear driving mechanism 221 is a cylinder, which will be referred to as a second cylinder hereinafter. The cylinder body of the second cylinder is fixed to the second horizontal support plate 15 (see Figure 1 ). The piston rod of the second cylinder can move along the A3-A3 direction (i.e. the up-down direction). The piston rod of the second cylinder is fixedly connected with the second connecting plate 222. The second reinforcing plate 223 has two arm plates perpendicular to each other, which are respectively fixedly connected with the slide table of the second cylinder and the second connecting plate 222, thereby enhancing the structural stability and improving the mounting accuracy.

[0058] In the illustrated embodiment, the second clamping driving member 224 is a jaw cylinder, which will be referred to as a second jaw cylinder hereinafter. The cylinder body of the second jaw cylinder is fixed to the upper surface of the second connecting plate 222. Two jaws of the second jaw cylinder are fixedly connected with a second clamping plate 225 respectively. The two second clamping plates 225 are oppositely arranged. When the second jaw cylinder is clamped, the two second clamping plates 225 are close to each other.

[0059] Corresponding to the first clamping mechanism 21, the second clamping mechanism 22 comprises four second clamping plates 226. The four second clamping plates 226 are identical in structure and are divided into two pairs. The second clamping plates 226 in each pair are oppositely arranged and are fixed to the two second clamping plates 225 respectively. When the second jaw cylinder is clamped, the second clamping plates 226 in each pair are close to each other and clamp the lower portion of the protective layer 201. Hereinafter, one of the second clamping plates 226 will be described in detail.

[0060] Referring to Figures 6 to 10 and Figure 12 , the second clamping plate 226 comprises a second body portion 2261, a first V-shaped groove portion 2262 and a first inverted V-shaped guide groove portion 2263.

[0061] The groove cavity (hereinafter referred to as a third groove cavity) 2262a of the first V-shaped groove portion 2262 penetrates the second body portion 2261 along the A1-A1 direction (left-right direction) and is open to the first clamping plate 216 opposite to it. The first V-shaped groove portion 2262 comprises a third inclined groove wall 2262b, a fourth inclined groove wall 2262c and a second arc-shaped wall 2262d. The second arc-shaped wall 2262d extends between the third inclined groove wall 2262b and the fourth inclined groove wall 2262c. When viewed from the left side or the right side of the second clamping plate 226, the first V-shaped groove portion 2262 is substantially V-shaped.

[0062] The first inverted V-shaped guide groove portion 2263 comprises two unconnected groove cavities (hereinafter referred to as fourth groove cavities) 2263a and unconnected third guide inclined surfaces 2263b and fourth guide inclined surfaces 2263c.

[0063] When viewed from the left side (or the right side) of the second clamping plate 226, the extension lines of the third guide inclined surface 2263b and the fourth guide inclined surface 2263c intersect to form a "V" shape.

[0064] In addition, the second clamping plate 226 further comprises a third mounting hole 2264 and a fourth mounting hole 2265.

[0065] The third mounting hole 2264 penetrates the second clamping plate 226 along the A1-A1 direction.

[0066] The fourth mounting hole 2265 also penetrates the second clamping plate 226 along the A1-A1 direction. In contrast, the third mounting hole 2264 is located on the lower side of the second clamping plate 226, and the fourth mounting hole 2265 is located on the upper side of the second clamping plate 226.

[0067] The bolt penetrates the second clamping plate 225 and the third mounting hole 2264, thereby fixing the second clamping plate 226 to the second clamping plate 225.

[0068] The first clamping plate 216 and the second clamping plate 226 are structurally matched, and when the clamping device 2 is clamped, the first inclined groove wall 2162b abuts against the fourth guide inclined surface 2263c, the second inclined groove wall 2162c abuts against the third guide inclined surface 2263b, the first guide inclined surface 2163b abuts against the fourth inclined groove wall 2262c, the second guide inclined surface 2163c abuts against the third inclined groove wall 2262b, and the first arc-shaped wall 2162d and the second arc-shaped wall 2262d are closed to form a cylindrical cavity (hereinafter referred to as a through hole) 23. The cable 200 is retracted in the through hole 23.

[0069] The cable 200 is retracted using the mutually matched first inverted V-shaped groove portion 2162 and the first V-shaped groove portion 2262, and the position requirement for the cable 200 is lower.

[0070] In addition, the arc-shaped arrangement of the first arc-shaped wall 2162d and the second arc-shaped wall 2262d allows the clamping device 2 to avoid obstructing the light path while providing a larger clamping area for the protective layer 201.

[0071] When the clamping device 2 is in the clamped state, the vertically expanded protective layer 201 of the cable 200 is clamped by a pair of first clamping plates 216 and a pair of second clamping plates 226. A pair of first clamping plates 216 and a pair of second clamping plates 226 are referred to as a set of clamping plates.

[0072] In the illustrated embodiment, the clamping device 2 is provided with two sets of clamping plates. The clamping device 2 containing two sets of clamping plates can clamp two cable ends at a time. Here, "two cable ends" can be two ends of one cable, or one end of each of two cables.

[0073] The first clamping mechanism 21 further comprises a first protection block 241. Correspondingly, the second clamping mechanism 22 further comprises a second protection block 242. The first protection block 241 and the second protection block 242 can hold the cable 200 when clamped. The first protection block 241 and the second protection block 242 belong to the protection block 24.

[0074] The first protection block 241 and the second protection block 242 are similar in structure and oppositely arranged. In the illustrated embodiment, the first protection block 241 is fixed to the first clamping block 216, and the second protection block 242 is fixed to the second clamping block 226.

[0075] Referring mainly to Figure 10 and Figure 13 , the first protection block 241 comprises a third body part 2411, a first arc plate part 2412 extending rightward from the third body part 2411, and a fifth mounting hole 2413.

[0076] The fifth mounting hole 2413 penetrates the third body part 2411 along the A1-A1 direction.

[0077] The third body part 2411 comprises a first body plate 2411a, a second inverted V-shaped groove part 2411b, and a second V-shaped guide groove part 2411c.

[0078] The groove cavity (hereinafter referred to as the fifth groove cavity 2411b1) of the second inverted V-shaped groove part 2411b penetrates the first body plate 2411a along the A1-A1 direction, and the second inverted V-shaped groove part 2411b is open toward the second protection block 242. The second inverted V-shaped groove part 2411b comprises a fifth inclined groove wall 2411b2, a sixth inclined groove wall 2411b3, and a third arc-shaped wall 2411b4 extending between the fifth inclined groove wall 2411b2 and the sixth inclined groove wall 2411b3.

[0079] When viewed from the right side of the first protection block 241, the second inverted V-shaped groove part 2411b is generally in the shape of an inverted V.

[0080] The second V-shaped guide groove part 2411c comprises a fifth guide inclined surface 2411c1 and a sixth guide inclined surface 2411c2.

[0081] When viewed from the right side of the first protection block 241, the extension lines of the fifth guide inclined surface 2411c1 and the sixth guide inclined surface 2411c2 intersect to form a "V" shape.

[0082] Referring mainly to Figure 10 and Figure 14The second protection block 242 comprises a fourth body part 2421, a second arc plate part 2422 extending rightward from the fourth body part 2421, and a sixth mounting hole 2423.

[0083] The sixth mounting hole 2423 penetrates the fourth body part 2421 along the A1-A1 direction.

[0084] The fourth body part 2421 comprises a second body plate 2421a, a second V-shaped groove part 2421b, and a second inverted V-shaped guide groove part 2421c.

[0085] The groove cavity (hereinafter referred to as sixth groove cavity 2412b1) of the second V-shaped groove part 2421b penetrates the second body plate 2421a along the A1-A1 direction, and the second V-shaped groove part 2421b is open toward the first protection block 241. The second V-shaped groove part 2421b comprises a seventh inclined groove wall 2421b2, an eighth inclined groove wall 2421b3, and a fourth arc wall 2421b4 extending between the seventh inclined groove wall 2421b2 and the eighth inclined groove wall 2421b3.

[0086] Viewing from the left side of the second protection block 242, the second V-shaped groove part 2421b is approximately V-shaped.

[0087] Referring to Figure 10 The second inverted V-shaped guide groove part 2421c comprises a seventh guide inclined surface 2421c1 and an eighth guide inclined surface 2421c2.

[0088] Viewing from the left side of the second protection block 242, the extension lines of the seventh guide inclined surface 2421c1 and the eighth guide inclined surface 2421c2 intersect to form an inverted “V” shape.

[0089] After the clamping device 2 is closed, the fifth inclined groove wall 2411b2 abuts against the eighth guide inclined surface 2421c2, the sixth inclined groove wall 2411b3 abuts against the seventh guide inclined surface 2421c1, the fifth guide inclined surface 2411c1 abuts against the seventh inclined groove wall 2421b2, the sixth guide inclined surface 2411c2 abuts against the eighth inclined groove wall 2421b3, and the third arc wall 2411b4 and the fourth arc wall 2421b4 both abut against the outer periphery of the cable 200, thereby tightly holding the cable 200.

[0090] At the same time, the first arc plate part 2412 and the second arc plate part 2422 are closed to form a barrel part 243 abutting against the outer periphery of the cable 200.

[0091] After the clamping device 2 is clamped, the third arc-shaped wall 2411b4, the fourth arc-shaped wall 2421b4, the inner wall of the first arc plate part 2412 and the inner wall of the second arc plate part 2422 can be considered as part of the circumferential wall of the same cylinder.

[0092] When the first protection block 241 is fixed to the first clamping plate 216, a bolt passes through the fifth mounting hole 2413 and the second mounting hole 2165 to fix them together. In addition, in order to position accurately, the first protection block 241 and / or the first clamping plate 216 can be provided with positioning members, such as positioning protrusions, positioning surfaces, etc.

[0093] When the second protection block 242 is fixed to the second clamping plate 226, a bolt passes through the sixth mounting hole 2423 and the fourth mounting hole 2265 to fix them together. Similarly, in order to position accurately, the second protection block 242 and / or the second clamping plate 226 can be provided with positioning members, such as positioning protrusions, positioning surfaces, etc.

[0094] Referring to Figure 9 When the clamping device 2 is clamped, a groove 25 is formed between the through hole 23 and the outer wall of the barrel part 243.

[0095] When the clamping device 2 is clamped, the protection block 24 fixes the cable 200, and the first clamping plate 216 and the second clamping plate 226 clamp the protection layer 201 which is vertically unfolded. The laser beam 30 is projected towards the groove 25 to cut the protection layer 201.

[0096] When the laser beam 30 cuts the protection layer 201, as will be described below, the focal plane of the laser beam 30 will be controlled at the cutting position of the protection layer 201. And the left side of the protection layer 201 (i.e. the side away from the laser beam 30) has a cavity (i.e. the first body plate 2411a and the second body plate 2421a have a certain distance from the protection layer 201), that is, the first body plate 2411a and the second body plate 2421a on the extension line of the laser beam 30 are away from the focal plane. This makes the heat received by the first body plate 2411a and the second body plate 2421a greatly reduced. In turn, the service life of the protection block 24 itself is prolonged. In addition, the protection block 24 uses brass material. Brass has high reflectivity to laser. This further prolongs the service life of the protection block 24.

[0097] In addition, when the laser beam 30 cuts the protective layer 201, the barrel portion 243 can protect the cable 200 inside, isolate the laser beam 30 and protect the cable 200; in addition, the barrel portion 243 also provides constraint to the cable 200, so that it does not encounter the laser beam 30 due to inclination or bending.

[0098] In the foregoing embodiment, the protective block 24 has the first arc plate portion 2412 and the second arc plate portion 2422. This can improve the yield of cutting products and more effectively avoid burning the cable 200 by the laser beam 30.

[0099] Referring to Figure 1 and Figure 4 The laser device 3 is installed on the base plate 11.

[0100] The laser device 3 includes a laser 31 (such as a fiber laser) for generating a laser beam 30, a laser beam deflection mechanism 32 for deflecting the projection direction of the laser beam 30, a mounting bracket 33 for mounting the laser 31 and the laser beam deflection mechanism 32, and a third linear drive mechanism 34 and a fourth linear drive mechanism 35 capable of moving the mounting bracket 33.

[0101] The laser beam deflection mechanism 32 can deflect the projection direction of the laser beam 30, so that the laser beam 30 cuts the protective layer 201 along the groove 25.

[0102] The third linear drive mechanism 34 can move the mounting bracket 33 along the A2-A2 direction, so that the laser device 3 is located at a first position or a second position. When the laser device 3 is located at the first position, the center of the laser lens (belonging to the laser beam deflection mechanism 32) in the laser device 3 coincides with the center of one cable end face; when the laser device 3 is located at the second position, the center of the laser lens in the laser device 3 coincides with the center of the other cable end face. This allows the laser beam 30 to be located at different positions when cutting the protective layer 201 of different cable end portions, so as to avoid burning the wires in the cable 200 due to too large optical path slope.

[0103] The fourth linear drive mechanism 35 is fixed to the base plate 11, and the fourth linear drive mechanism 35 can move the third linear drive mechanism 34 and the mounting bracket 33 along the A1-A1 direction, so as to adjust the focal length of the laser beam 30, so that the cutting position of the protective layer 201 is located in the focal plane range, so as to obtain better cutting effect.

[0104] The third linear driving mechanism 34 can adopt a KK module or the like. The fourth linear driving mechanism 35 adopts a linear motor or a manual translation mechanism.

[0105] The blowing device 4 comprises a first blowing mechanism 41 and a second blowing mechanism 42.

[0106] Referring mainly to Figure 6 , Figure 15 and Figure 16 , the first blowing mechanism 41 comprises two blowing blocks 411. The two blowing blocks 411 are respectively fixed to the front and rear sides of the first air cylinder.

[0107] The blowing block 411 comprises a blowing block body 4111, a seventh mounting hole 4112, a first blowing channel 4113 and a second blowing channel 4114.

[0108] The seventh mounting hole 4112 penetrates the blowing block body 4111 along the A2-A2 direction. During installation, a bolt passes through the seventh mounting hole 4112 to fix the blowing block 411 to the first air cylinder.

[0109] Referring mainly to Figure 6 and Figure 16 , the first blowing channel 4113 and the second blowing channel 4114 are inclined towards the clamping surfaces of the first clamping plate 216 and the second clamping plate 226 (it should be understood that the clamping surfaces of the first clamping plate 216 and the second clamping plate 226 are the surfaces of the first clamping plate 216 and the second clamping plate 226 for clamping the protective layer 201), and the two blowing channels can respectively guide the airflow (such as compressed air) towards the clamping surfaces of the first clamping plate 216 and the second clamping plate 226 on the left side and the clamping surfaces of the first clamping plate 216 and the second clamping plate 226 on the right side, thereby blowing off the protective layer 201 cut by the laser beam 30 to prevent adhesion.

[0110] Referring to Figure 5 , the second blowing mechanism 42 comprises two blowing copper pipes 421. The blowing copper pipes 421 are fixed to the first horizontal support plate 14.

[0111] The two blowing copper pipes 421 are designed to guide the compressed airflow towards the two cable ends respectively and align with the laser cutting position. The copper pipes are easy to adjust the direction of the airflow due to their superior plasticity.

[0112] When laser cutting, the air blowing copper pipe 421 blows compressed air to the cutting position. In this way, on the one hand, the oxygen supply can be increased, and the cutting ability of the laser on the protective layer 201 can be improved; on the other hand, the particles generated by laser cutting can be blown away in time to avoid the particles remaining on the section of the protective layer 201 and continuing to burn and then blackening, thereby affecting the product quality; in addition, the influence of heat on the cable 200 and the protective layer 201 can also be reduced to avoid fire.

[0113] Referring to Figure 3 The product carrier 5 can fix (e.g., hold) the end of the cable 200 loaded thereon.

[0114] The outer sheath of the end of the cable 200 is cut off, and the protective layer 201 (e.g., the braided layer and / or the bulletproof wire) of the cable 200 is unfolded vertically. The vertical unfolding here refers to unfolding in the direction perpendicular to the extension direction of the cable 200. It can also be described as unfolding the protective layer 201 along the radial direction of the cable 200.

[0115] In the illustrated embodiment, the product carrier 5 has two fixing positions. That is, the product carrier 5 can fix both ends of one cable at a time, or fix one end of two cables.

[0116] This arrangement matches the structure of the clamping device 2 mentioned above. In some embodiments, the product carrier 5 can also have only one fixing position.

[0117] In addition, in other embodiments of the present application, the product carrier 5 can also have other structural forms as long as it can carry the cable 200 to the work station and hold the cable 200 in a certain position. In addition, in some other embodiments, the laser cutting device 100 can also not include the product carrier 5. It should be understood that the laser cutting device 100 including the product carrier 5 has a higher degree of automation and better positioning accuracy.

[0118] The control device is not shown. The control device is configured to control the clamping of the clamping device 2, the air supply of the air blowing device 4, the movement trajectory (i.e., the cutting trajectory) of the laser beam 30 in the laser device 3, and the movement of the product carrier 5, etc.

[0119] In some embodiments of the present application, the laser cutting device 100 can also include an air extraction device. The air extraction device can cooperate with the air blowing device 4 to collect the protective layer 201 cut off.

[0120] Before laser cutting, the outer sheath of the cable 200 is first cut off to expose the protective layer 201, then the protective layer 201 is manually turned outward and scattered, and the protective layer 201 is flattened to be distributed in the same plane, and finally the cable 200 is fixed to the product carrier 5.

[0121] When cutting, under the control of the control device: the product carrier 5 carrying the cable 200 moves to a position corresponding to the laser cutting device 100, then the first cylinder and the second cylinder move towards each other, driving the first clamping plate 216 to approach the second clamping plate 226, driving the first protective block 241 to approach the second protective block 242, and the first protective block 241 and the second protective block 242 tightly hold the cable 200. Further, the first clamping jaw cylinder and the second clamping jaw cylinder are clamped, the first clamping plate 216 approaches the second clamping plate 226 and clamps the vertically expanded protective layer 201 between them. At this time, the first clamping plate 216 and the second clamping plate 226 clamp the outer periphery of the protective layer 201, the barrel portion 243 tightly holds the side of the cable 200, and the right end surface of the barrel portion 243 abuts against the left surface of the protective layer 201. Then, the laser 31 at the first position and the laser beam deflection mechanism 32 project the laser beam 30 to the groove 25, and the laser beam 30 moves along the groove 25 to cut the protective layer 201 of one cable end, then the third linear drive mechanism 34 moves, driving the laser 31 and the laser beam deflection mechanism 32 to the second position, and the laser beam 30 cuts the protective layer 201 of the other cable end. When the laser beam 30 cuts the protective layer 201, the air blowing copper pipe 421 blows air at the cutting position. After cutting is completed, the first cylinder and the second cylinder move away, clamping the cut protective layer 201 to move up and down and separate from the cable 200. Then, the first clamping jaw cylinder and the second clamping jaw cylinder open, and the two air blowing blocks 411 blow air to the first clamping plate 216 and the second clamping plate 226 to facilitate blowing off the protective layer 201 at the first clamping plate 216 and the second clamping plate 226. In the laser cutting device 100 with the air suction device, after the air blowing block 411 blows air, the air suction device sucks air to suck away the cut protective layer 201. Thus, the cutting of the protective layer 200 is completed, and the clamping device 2 also completes homing, the product carrier 5 drives the cable 200 to move to the next station, the laser device 3 is homed, and waits for the next cutting.

[0122] The above embodiments are only used for illustrating the present application and not limiting the technical solutions described in the present application. The understanding of the present application should be based on the skilled in the art. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the skilled in the art can still modify or equivalently replace the present application, and all the technical solutions and improvements which do not deviate from the spirit and scope of the present application should be covered in the scope of claims of the present application.

Claims

1. A laser cutting device (100) for cutting a protective layer (201) of a cable (200); characterized in that, The utility model relates to a cable cutting device, comprising: a laser device (3) configured to provide a laser beam (30) for cutting; a clamping device (2) configured to clamp the protective layer (201) which is perpendicular to the extending direction of the cable (200); the clamping device (2) forms a through hole (23) after being closed, and the cable (200) extends in the through hole (23); the clamping device (2) comprises a protective block (24) which clamps the outer periphery of the cable (200) after being closed; and a control device designed to control the laser beam (30) to project into the through hole (23) to cut off the protective layer (201); each protective block (24) has an arc plate part (2412, 2422) which forms a barrel part (243) wrapping the cable (200) after the clamping device (2) is closed, and a groove (25) exists between the outer periphery of the barrel part (243) and the through hole (23), and the laser beam (30) is projected into the groove (25) to cut off the protective layer (201); the clamping device (2) comprises at least one set of clamping plates (216, 226), the protective block (24) is fixed to the clamping plate (216, 226), one set of clamping plates (216, 226) forms a through hole (23) after being closed, one set of clamping plates (216, 226) comprises a first clamping plate (216) and a second clamping plate (226), the first clamping plate (216) and the second clamping plate (226) clamp the outer periphery of the protective layer (201), and the right end surface of the barrel part (243) abuts against the left side surface of the protective layer (201).

2. The laser cutting apparatus (100) according to claim 1, characterized in that: Each protective block (24) has a body part (2411, 2421), and the arc plate part (2412, 2422) extends outward from the body part.

3. The laser cutting apparatus (100) according to claim 2, characterized in that: One set of clamping plates (216, 226) is provided with one set of protective blocks (24), and the body part (2411, 2421) is fixed to the clamping plate (216, 226).

4. The laser cutting apparatus (100) according to claim 3, characterized in that: One set of clamping plates (216, 226) comprises two first clamping plates (216) which are structurally identical and oppositely arranged and two second clamping plates (226) which are structurally identical and oppositely arranged. The first clamping plate (216) has a first body part (2161), a first inverted V-shaped groove part (2162) and a first V-shaped guide groove part (2163); a groove cavity of the first inverted V-shaped groove part (2162) penetrates through the first body part (2161) and is open towards the second clamping plate (226), the first inverted V-shaped groove part (2162) comprises a first inclined groove wall (2162b), a second inclined groove wall (2162c) and a first arc-shaped wall (2162d) extending between the first inclined groove wall (2162b) and the second inclined groove wall (2162c); the first V-shaped guide groove part (2163) comprises a first guide inclined surface (2163b) and a second guide inclined surface (2163c); The second clamping plate (226) has a second body part (2261), a first V-shaped groove part (2262) and a first inverted V-shaped guide groove part (2263); a groove cavity of the first V-shaped groove part (2262) penetrates through the second body part (2261) and is open towards the first clamping plate (216), the first V-shaped groove part (2262) comprises a third inclined groove wall (2262b), a fourth inclined groove wall (2262c) and a second arc-shaped wall (2262d) extending between the third inclined groove wall (2262b) and the fourth inclined groove wall (2262c); the first inverted V-shaped guide groove part (2263) comprises a third guide inclined surface (2263b) and a fourth guide inclined surface (2263c); After the clamping device (2) is closed, the first inclined groove wall (2162b) abuts against the fourth guide inclined surface (2263c), the second inclined groove wall (2162c) abuts against the third guide inclined surface (2263b), the first guide inclined surface (2163b) abuts against the fourth inclined groove wall (2262c), the second guide inclined surface (2163c) abuts against the third inclined groove wall (2262b), and the first arc-shaped wall (2162d) and the second arc-shaped wall (2262d) cooperate to define the through hole (23).

5. The laser cutting apparatus (100) according to claim 3, characterized in that: A set of the protection blocks comprises first and second protection blocks (241, 242) arranged opposite to each other; The body part of the first protection block (241) comprises a first body plate (2411a), a second inverted V-shaped groove part (2411b) and a second V-shaped guide groove part (2411c); a groove cavity of the second inverted V-shaped groove part (2411b) penetrates through the first body plate (2411a) and is open towards the second protection block (242), the second inverted V-shaped groove part (2411b) comprises a fifth inclined groove wall (2411b2), a sixth inclined groove wall (2411b3) and a third arc-shaped wall (2411b4) extending between the fifth inclined groove wall (2411b2) and the sixth inclined groove wall (2411b3); the second V-shaped guide groove part (2411c) comprises a fifth guide inclined surface (2411c1) and a sixth guide inclined surface (2411c2); The body part of the second protection block (242) comprises a second body plate (2421a), a second V-shaped groove part (2421b) and a second inverted V-shaped guide groove part (2421c); the groove cavity of the second V-shaped groove part (2421b) penetrates through the second body plate (2421a) and opens towards the first protection block (241), the second V-shaped groove part (2421b) comprises a seventh inclined groove wall (2421b2), an eighth inclined groove wall (2421b3) and a fourth arc-shaped wall (2421b4) extending between the seventh inclined groove wall (2421b2) and the eighth inclined groove wall (2421b3); the second inverted V-shaped guide groove part (2421c) comprises a seventh guide inclined surface (2421c1) and an eighth guide inclined surface (2421c2); After the clamping device (2) is closed, the fifth inclined groove wall (2411b2) abuts against the eighth guide inclined surface (2421c2), the sixth inclined groove wall (2411b3) abuts against the seventh guide inclined surface (2421c1), the fifth guide inclined surface (2411c1) abuts against the seventh inclined groove wall (2421b2), the sixth guide inclined surface (2411c2) abuts against the eighth inclined groove wall (2421b3), and the third arc-shaped wall (2411b4) and the fourth arc-shaped wall (2421b4) abut against the outer periphery of the cable (200).

6. The laser cutting apparatus (100) according to claim 4, characterized in that: The clamping device (2) further comprises a first linear driving mechanism (211), a second linear driving mechanism (221), a first clamping jaw air cylinder and a second clamping jaw air cylinder; The moving end of the first linear driving mechanism (211) is fixedly connected with the cylinder body of the first clamping jaw air cylinder; each clamping jaw of the first clamping jaw air cylinder is fixedly provided with two first clamping plates (216) through a connecting plate; The moving end of the second linear driving mechanism (221) is fixedly connected with the cylinder body of the second clamping jaw air cylinder; each clamping jaw of the second clamping jaw air cylinder is fixedly provided with two second clamping plates (226) through a connecting plate.

7. The laser cutting apparatus (100) according to claim 6, characterized in that: Further comprising a first air blowing mechanism (41); The first air blowing mechanism (41) comprises two air blowing blocks (411) fixed on the two sides of the first clamping jaw air cylinder respectively; The inside of each air blowing block (411) comprises at least a first air blowing channel (4113) and a second air blowing channel (4114); the first air blowing channel (4113) is configured to guide gas to the clamping surfaces of the first clamping plate (216) and the second clamping plate (226) on one side of the protection layer (201); the second air blowing channel (4114) is configured to guide gas to the clamping surfaces of the first clamping plate (216) and the second clamping plate (226) on the other side of the protection layer (201).

8. The laser cutting apparatus (100) according to claim 7, characterized in that: Further comprising a second air blowing mechanism (42); The second air blowing mechanism (42) comprises a copper pipe configured to guide gas to the position where the laser beam (30) cuts.

9. The laser cutting apparatus (100) according to claim 6, characterized in that: The laser device (3) comprises a laser (31), a laser beam deflection mechanism (32), a third linear drive mechanism (34), and a fourth linear drive mechanism (35); The laser (31) is configured to generate the laser beam (30), the laser beam deflection mechanism (32) is configured to deflect the laser beam (30) to achieve the ring cutting of the vertically expanded protective layer (201), and the third linear drive mechanism (34) and the fourth linear drive mechanism (35) are configured to adjust the matching of the laser beam (30) and the cutting position of the protective layer (201) in two dimensions.

10. The laser cutting apparatus (100) according to claim 6, characterized in that: A product carrier (5) is further included; the product carrier (5) is configured to drive the cable (200) to be close to or away from the clamping device (2).

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