Electric heating device with clamping sleeve

Abstract

Electric heating device (100, 200, 300, 400, 500, 600) with an axial opening (131, 231, 331, 431, 531, 631) for receiving an object to be heated, with an electric heating element (130, 230, 330, 430, 530, 630) surrounding the axial opening (131, 231, 331, 431, 531, 631) at least in sections, and with a substantially cylindrical or substantially frustoconical clamping casing (110, 210, 310, 410, 510, 610, 710, 810, 910, 1010, 1110) surrounding the electric heating element (130, 230, 330, 430, 530, 630) at least in the radial direction for generating a adjustable force acting radially in the direction of an axis (A) of the axial opening (131, 231, 331, 431, 531, 631), wherein the clamping jacket (110, 210, 310, 410, 510, 610, 710, 810, 910, 1010, 1110) is multi-part and has at least two pressure segments (113, 114, 213, 214, 313, 314, 413, 414, 513, 514, 613, 614, 715, 716, 717, 718, 813, 814, 823, 824, 833, 834, 913, 914, 1013, 1014, 1113,1114) for introducing the force acting radially in the direction of an axis (A) of the axial opening (131, 231, 331, 431, 531, 631) and at least one first and one second clamping segment (111, 112, 211, 212, 311, 312, 353, 354, 411, 412, 453, 454, 511, 512, 611, 612, 711, 712, 713, 714, 811, 812, 821, 822, 831, 832, 911, 912, 1011, 1012, 1111, 1112), with which the width of gaps (119a, 119b, 219a, 219b, 319a, 319b, 419a,419b,519a,519b,619a,619b,719a,719b, 719c,719d,819a, 819b,829a,829b,839a,839b,919a,919b,1019a,1019b,1119a, 1119b) between opposite edges of adjacent pressure segments (113,114,213,214,313,314,413, 414,513,514,613,614,715,716,717,718,813,814,823,824,833, 834,913,914,1013,1014,1113,1114) for adjusting the force acting radially in the direction of an axis (A) of the axial opening (131, 231,331,431, 531,631) by moving the clamping segments (111,112,211,212,311,312,353,354,411, 412,453,454, 511,512,611,612,711,712,713,714,811,812,821, 822,831,832,911,912,1011,1012,1111,1112) relative to the pressure segment (113,114,213,214,313,314,413,414,513,514, 613,614,715,716,717,718,813,814,823,824,833,834,913,914, 1013,1014,1113,1114), characterized in that the first clamping segment (111,211,311,353,411,453,511,611,711,713, 811,821,831,911,1011,1111) and the second clamping segment (112,212,312,354,412,454,512,612,712,713,714,811,812,822, 832,912,1012,1112) are designed in such a way that the second clamping segment (112,212,312,354,412,454,512,612,712,713, 714,811,812,822,832,912,1012,1112) moves in the direction of movement in which the first clamping segment (111,211, 311,353,411,453,511,611,711,713,811,821,831,911,1011, 1111) is Increasing the force acting radially in the direction of an axis (A) of the axial opening (131,231,331,431,531,631) results in a reduction of the force acting radially in the direction of an axis (A) of the axial opening (131,231, 331,431,531,631).

Claims

[1] Electric heating device (100, 200, 300, 400, 500, 600) with an axial opening (131, 231, 331, 431, 531, 631) for receiving an object to be heated, with an electric heating element (130, 230, 330, 430, 530, 630) surrounding the axial opening (131, 231, 331, 431, 531, 631) at least in sections, and with a substantially cylindrical or substantially frustoconical clamping casing (110, 210, 310, 410, 510, 610, 710, 810, 910, 1010, 1110) surrounding the electric heating element (130, 230, 330, 430, 530, 630) at least in the radial direction for generating an adjustable force acting radially in the direction of an axis (A) of the axial opening (131, 231, 331, 431, 531, 631), wherein the clamping jacket (110, 210, 310, 410, 510, 610, 710, 810, 910, 1010, 1110) is multi-part and has at least two pressure segments (113, 114, 213, 214, 313, 314, 413, 414, 513, 514, 613, 614, 715, 716, 717, 718, 813, 814, 823, 824, 833, 834, 913, 914, 1013, 1014, 1113,1114) for introducing the force acting radially in the direction of an axis (A) of the axial opening (131, 231, 331, 431, 531, 631) and at least one first and one second clamping segment (111, 112, 211, 212, 311, 312, 353, 354, 411, 412, 453, 454, 511, 512, 611, 612, 711, 712, 713, 714, 811, 812, 821, 822, 831, 832, 911, 912, 1011, 1012, 1111, 1112), with which the width of gaps (119a, 119b, 219a, 219b, 319a, 319b, 419a,419b,519a,519b,619a,619b,719a,719b, 719c,719d,819a, 819b,829a,829b,839a,839b,919a,919b,1019a,1019b,1119a, 1119b) between opposite edges of adjacent pressure segments (113,114,213,214,313,314,413, 414,513,514,613,614,715,716,717,718,813,814,823,824,833, 834,913,914,1013,1014,1113,1114) for adjusting the force acting radially in the direction of an axis (A) of the axial opening (131, 231,331,431, 531,631) by moving the clamping segments (111,112,211,212,311,312,353,354,411, 412,453,454, 511,512,611,612,711,712,713,714,811,812,821, 822,831,832,911,912,1011,1012,1111,1112) is variable relative to the pressure segment (113,114,213,214,313,314,413,414,513,514, 613,614,715,716,717,718,813,814,823,824,833,834,913,914, 1013,1014,1113,1114), characterized by that the first clamping segment (111,211,311,353,411,453,511,611,711,713, 811,821,831,911,1011,1111) and the second clamping segment (112,212,312,354,412,454,512,612,712,713,714,811,812,822, 832,912,1012,1112) are designed such that in the second clamping segment (112,212,312,354,412,454,512,612,712,713, 714,811,812,822,832,912,1012,1112) a movement in the direction of movement in which the first clamping segment (111,211, 311,353,411,453,511,611,711,713,811,821,831,911,1011, 1111) is moved to increase the force acting radially in the direction of an axis (A) of the axial opening (131,231,331,431,531,631) entails a reduction in the force acting radially in the direction of an axis (A) of the axial opening (131,231, 331,431,531,631). [2] Electric heating device (300,400) according to claim 1, characterized by that at least two clamping segments (311, 353, 312, 354, 411, 453, 412, 454) are provided, with which the width of the gap (319a, 319b, 419a, 419b) between different sections of the same opposite edges of pressure segments (313, 314, 413, 414) can be varied for adjusting the force acting radially in the direction of an axis (A) of the axial opening (131, 231, 331, 431, 531, 631), wherein one of the clamping segments (353, 354, 453, 454) has an actuating element (355, 356, 455, 456) which extends in the direction of the end face (311a, 312a, 411a, 412a) of the other clamping segment (311,312,411,412). [3] Electric heating device (100, 200, 300, 400, 500, 600) according to one of claims 1 or 2, characterized bythat the clamping segments (111,112,211,212,311,312,353,354,411,412, 453,454,511,512,611,612,711,712,713,714,811,812,821,822, 831,832,911,912,1011,1012,1111,1112) have a different color, geometry or surface geometry. [4] Electric heating device (100,200,300,400,500,600) according to any preceding claim, characterized bythat at least one clamping segment (831,832) has guide elements (837a,837b,838a, 838b) which engage in recesses (835a,835b,836a, 836b) provided in different pressure segments (833,834), wherein the distance between the recesses (835a,835b,836a,836b) changes in the direction of the relative movement between pressure segments (833,834) and this clamping segment (831,832), or that in each case two pressure segments (113,114,213,214,313,314,413,414,513,514, 613,614,715,716,717,718,813,814,823,824,913,914,1013,1014, 1113,1114) Guide elements (117a,117b,118a,118b,217a, 217b,217c,217d,218a,218b,218c,218d,517a,517b,518a,518b, 617a,617b,618a,618b,725a,725b,726a,726b,727a,727b,728a, 728b,817a,817b,818a,818b,827a,827b,828a,828b,917a,917b, 918a,918b,1017a,1017b,1018a,1018b) which are divided into different sections in the same clamping segment (111,112,211, 212,311,312,353,354,411,412,453,454,511,512,611,612,711, 712,713,714,811,812,821,822,911,912,1011,1012,1111,1112) provided recesses (115a,115b,116a,116b,215a,215b, 215c,215d,216a,216b,216c,216d,515a,515b,516a,516b,615a, 615b,616a,616b,721a,721b,722a,722b,723a,723b,724a,724b, 815a,815b,816a,816b,825a,825b,826a,826b,836a,836b,915a, 915b, 916a, 916b, 1015a, 1015b, 1016a, 1016b), wherein the distance between the recesses (115a, 115b, 116a, 116b, 215a, 215b, 215c, 215d, 216a, 216b, 216c, 216d, 515a, 515b, 516a, 516b, 615a, 615b, 616a, 616b, 721a, 721b, 722a, 722b, 723a, 723b, 724a, 724b, 815a, 815b, 816a, 816b, 825a, 825b, 826a, 826b, 836 a,836b,915a,915b,916a,916b,1015a,1015b,1016a,1016b)extend in the direction of the relative movement between pressure segments (113,114,213,214,313,314,413,414,513,514,613, 614,715,716,717,718,813,814,823,824,913,914,1013,1014, 1113,1114) and clamping segments (111,112,211,212,311,312,353, 354,411,412,453,454,511,512,611,612,711,712,713,714,811, 812,821,822,831,832,911,912,1011,1012,1111,1112) changes., [5] Electric heating device (100,200,300,400,500,600) according to claim 4, characterized by that the recesses (835a, 835b, 836a, 836b), in which different clamping segments (831, 832) engage, or the recesses (115a, 115b, 116a, 116b, 215a, 215b, 215c, 215d, 216a, 216b, 216c, 216d, 515a, 515b, 516a, 516b, 615a, 615b, 616a, 616b, 721a, 721b, 722a, 722b, 723a, 723b, 724a, 724b, 815a, 815b, 816a, 816b, 825a, 825 b,826a,826b,836a,836b,915a,915b,916a,916b,1015a,1015b,1016a,1016b) of different clamping segments (111,112,211,212, 311,312,353,354,411,412,453,454,511,512,611,612,711,712, 713,714,811,812,821,822,831,832,911,912,1011,1012,1111, 1112) at different angles relative to the axis (A) of the axial opening (131,231,331,431,531,631) get lost. [6] Electric heating device (100, 200, 300, 400, 500, 600) according to claim 4 or 5, characterized bythat the recesses (835a,835b,836a,836b) engage in the different clamping segments (831,832) or the recesses (115a,115b,116a,116b,215a,215b,215c,215d,216a,216b,216c, 216d,515a,515b,516a,516b,615a,615b,616a,616b,721a,721b, 722a,722b,723a,723b,724a,724b,815a,815b,816a,816b,825a, 825b,826a,826b,836a,836b,915a,915b,916a,916b,1015a,1015b, 1016a,1016b) of different clamping segments (111,112,211, 212,311,312,353,354,411,412,453,454,511,512,611,612,711, 712,713,714,811,812,821,822,831,832,911,912,1011,1012, 1111,1112) are of different lengths. [7] Electric heating device (100, 200, 300, 400, 500, 600) according to one of the preceding claims, characterized bythat the recesses (115a,115b,116a,116b,215a,215b,215c,215d,216a, 216b,216c,216d,515a,515b,516a,516b,615a,615b,616a,616b, 721a,721b,722a,722b,723a,723b,724a,724b,815a,815b,816a, 816b,825a,825b,826a,826b,836a,836b,915a,915b,916a,916b, 1015a, 1015b, 1016a, 1016b), and / or the guide elements (117a, 117b, 118a, 118b, 217a, 217b, 217c, 217d, 218a, 218b, 218c, 218d, 517a, 517b, 518a, 518b, 617a, 617b, 618a, 618b, 725a, 725b, 726a, 726b, 727a, 727b, 728a, 728b, 817a, 817b, 818a, 818b, 827a, 827b,828a,828b,917a,917b,918a,918b,1017a,1017b,1018a, 1018b) and / or contact surfaces between clamping segment (111,112,211,212,311,312,353,354,411,412,453,454,511,512, 611,612,711,712,713,714,811,812,821,822,831,832,911,912, 1011,1012,1111,1112) and pressure segment (113,114,213, 214,313,314,413,414,513,514,613,614,715,716,717,718,813, 814,823,824,833,834,913,914,1013,1014,1113,1114) have a surface with a high roughness depth or ribbing. [8] Electric heating device (100, 200, 300, 400, 500, 600) according to one of the preceding claims, characterized by that for the movement of different clamping segments (111,112,211, 212,311,312,353,354,411,412,453,454,511,512,611,612,711, 712,713,714,811,812,821,822,831,832,911,912,1011,1012, 1111,1112)relative to the pressure segments (113,114,213, 214,313,314,413,414,513,514,613,614,715,716,717,718,813, 814,823,824,833,834,913,914,1013,1014,1113,1114) different forces are required. [9] Electric heating device (100, 200, 300, 400, 500, 600) according to one of the preceding claims, characterized by that at least one of the clamping segments (912) has a locking mechanism (960) or an inhibition to secure against unintentional displacement. [10] Electric heating device (600) according to one of the preceding claims, characterized bythat at least one clamping segment (611) has at least one recess (611a,611b) on its front side for receiving a tool (670). [11] Electric heating device (100,200,300,400,500,600) according to claim 10, characterized by that on different clamping segments (111,112,211,212,311,312, 353,354,411,412,453,454,511,512,611,612,711,712,713,714, 811,812,821,822,831,832,911,912,1011,1012,1111,1112) one of at least two different recesses or at least two different groups of recesses for receiving different tools is arranged on the front side. [12] Electric heating device (600) according to any preceding claim, characterized bythat at least two mutually adjacent pressure segments (613,614) are present and that the mutually adjacent pressure segments (613,614) of the clamping casing (610) of the electric heating device (600) have a safeguard against displacement relative to one another in the direction of the axis (A) of the axial opening (631).

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