Chain guide device and chain-type horizontal tool magazine

Abstract

The present invention relates to the technical field of chain tool magazines, and in particular to a chain guiding device and a chain horizontal tool magazine, comprising: a tool magazine body, an upper guide rail group, a lower guide rail group and a tensioning assembly; the upper guide rail group guides the upper guide wheel group of the chain group; the lower guide rail group guides the lower guide wheel group of the chain group; the tensioning assembly adjusts the tension of the running chain; a gap compensation mechanism is provided at one end of the tool magazine body close to the driven end guide rail, corresponding to the upper guide rail group and the lower guide rail group, which comprises two compensation blocks, a guide block, a drive assembly and a distance sensor, and the guide block has a guide groove for accommodating two compensation blocks; when the distance sensor detects that the moving distance of the driven end guide rail is greater than the set value, the drive assembly drives the two compensation blocks into the gap, thereby realizing dynamic compensation of the gap, and the compensated guide rail can provide stable support for the chain, reduce the shaking and offset of the chain during operation, thereby improving the operation stability and positioning accuracy of the chain.

Description

Technical Field

[0001] The present invention relates to the technical field of chain tool magazines, and in particular to a chain guide device and a chain horizontal tool magazine. Background Art

[0002] Chain tool magazines are a common tool storage and replacement device in CNC machine tools. Their core component is the chain. Made of high-strength material, the chain has sufficient load-bearing capacity and wear resistance, forming a closed-loop structure.

[0003] In a chain-type tool magazine, the guide rails are mounted on a base, constructed from multiple sections. The guide rails are aligned with the direction in which the elastic components release their force. They consist of a linear guide in the center and curved guides at each end. If the chain becomes loose during operation, the curved guide at the driven end is adjusted to move it away from the driving end, thereby adjusting the chain tension and maintaining its tautness.

[0004] However, a gap will be created between the adjusted curved guide rail at the driven end and the linear guide rail. When the gap exceeds a certain proportion of the guide wheel diameter (e.g. 10% to 20%), the contact between the chain and the guide rail will become unstable, thereby increasing the wear of the chain and the guide rail. Long-term wear will further increase the gap. At this time, the chain will lose stable support during operation, and will wobble or deviate at the gap, causing its running trajectory to be unstable, seriously affecting the chain's running positioning accuracy.

[0005] In view of the existence of the above problems, the inventor has actively conducted research and innovation based on many years of rich practical experience and professional knowledge in the engineering application of such products, in order to create a chain guide device and a chain-type horizontal tool magazine to make it more practical. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a chain guide device and a chain-type horizontal tool magazine to effectively solve the problems in the background technology.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is: a chain guide device, comprising:

[0008] Tool magazine body;

[0009] An upper guide rail assembly is provided on the upper surface of the tool magazine body and is used to guide the upper guide wheel assembly of the chain assembly;

[0010] A lower guide rail assembly is provided on the lower surface of the tool magazine body and is used to guide the lower guide wheel assembly of the chain assembly;

[0011] A tensioning assembly is provided between the upper guide rail group and the driven end guide rail of the lower guide rail group, and is used to adjust the tension of the running chain;

[0012] Wherein, the tool magazine body is provided with a gap compensation mechanism corresponding to the upper guide rail group and the lower guide rail group at one end close to the driven end guide rail, and the gap compensation mechanism includes:

[0013] two compensation blocks;

[0014] A guide block having a guide groove for accommodating the two compensation blocks;

[0015] A driving component, used for driving the two compensation blocks to move closer to or away from each other;

[0016] The distance sensor is used to monitor the movement distance of the driven end guide rail relative to the linear guide rail. If the movement distance is greater than the set value, the driving component drives the two compensation blocks into the gap.

[0017] Furthermore, the contact surface between the driven end guide rail and the two linear guide rails is stepped.

[0018] Furthermore, the guide block is fixed between two straight sections of the driven end guide rail;

[0019] The guide block includes a first sliding wall, a second sliding wall and a bottom plate, and the two compensation blocks are placed in the semi-enclosed guide groove surrounded by the first sliding wall, the second sliding wall and the bottom plate;

[0020] And the inner side wall of the first sliding wall is aligned with the cross section of the driven end guide rail or the inner side wall of the second sliding wall is aligned with the cross section of the linear guide rail.

[0021] Furthermore, the driving assembly includes:

[0022] The first connecting rod and the second connecting rod are hinged at one end through a hinge shaft, and the other ends are hinged to the two compensation blocks respectively;

[0023] A hydraulic cylinder is provided on the tool magazine body, and a driving rod thereof is connected to the hinged ends of the first connecting rod and the second connecting rod through a connecting piece;

[0024] The guide block is arranged on the driven end guide rail, and the force applied by the hydraulic cylinder is transmitted through the first connecting rod and the second connecting rod, driving the two compensation blocks to move toward the gap while keeping the driven end guide rail in a braking state.

[0025] Furthermore, the tensioning assembly includes a driving disc and two telescopic shafts arranged on one end of the driving disc facing the tool magazine body;

[0026] One end of the telescopic shaft is fixed to the driving disc, and the other end extends into the tool magazine body, and the telescopic shaft is elastically supported by a spring;

[0027] When the tensioning assembly drives the driven end guide rail to move and tension the chain assembly, the driving rod of the hydraulic cylinder moves synchronously with the driven end guide rail.

[0028] Furthermore, the connecting member includes a connecting block connected to the driving rod, and two limiting plates extending along the upper and lower edges of the connecting block;

[0029] The first connecting rod and the second connecting rod are placed between the two limiting plates, and strip grooves are provided on the two limiting plates along the driving direction of the driving rod. When the tensioning force is adjusted, the hinge shaft slides in the strip grooves.

[0030] Furthermore, an elastic component is provided in the strip-shaped groove on a side of the hinge shaft close to the driven end guide rail;

[0031] Furthermore, the elastic force of the elastic component is smaller than the elastic force of the tensioning component.

[0032] Furthermore, a linkage assembly is provided between the two groups of the gap compensation mechanisms, and the linkage assembly includes a connecting shaft and a sliding block;

[0033] The sliding block is arranged in the sliding groove of the tool magazine body, the connecting shaft passes through the sliding block, and its two ends are respectively connected to the upper guide rail group and the lower guide rail at the hinge ends of the first connecting rod and the second connecting rod.

[0034] Furthermore, auxiliary drive rods are provided on the opposite surfaces of the two compensation blocks, one end of the auxiliary drive rod is embedded in the compensation block and elastically supported by a spring, and the end extending out of the compensation block abuts against the opposite compensation block.

[0035] The present invention also provides a chain-type horizontal tool magazine, comprising the chain guide device as described above;

[0036] a support frame, supporting and fixing the chain guide device;

[0037] a chain group, arranged on the chain guide device;

[0038] a plurality of knife claws, arranged on individual chain links of the chain group;

[0039] The transmission drive mechanism is used to drive the chain group to drive the plurality of knife claws to transmit.

[0040] The beneficial effects of the present invention are as follows: the dual guide rail form of the upper guide rail group and the lower guide rail group in the present invention can better constrain the movement of the chain, so that it can be stably guided in both the upper and lower directions; and when the worn guide rail needs to be replaced, the upper guide rail group or the lower guide rail group can be operated separately without disassembling the entire guide rail system; and in the process of tensioning force adjustment, dynamic compensation of the gap is achieved through the cooperation of the compensation block, the guide block, the drive assembly and the distance sensor. The compensated guide rail can provide stable support for the chain, reduce the shaking and deviation of the chain during operation, thereby improving the operation stability and positioning accuracy of the chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0042] Figure 1 This is a schematic diagram of the installation of a chain guide device in an embodiment of the present invention;

[0043] Figure 2 Schematic diagram of the installation of the upper guide rail assembly and the lower guide rail assembly in an embodiment of the present invention;

[0044] Figure 3 Schematic diagram of the installation of the gap compensation mechanism in an embodiment of the present invention;

[0045] Figure 4 This is a schematic structural diagram of a tensioning assembly in an embodiment of the present invention;

[0046] Figure 5 Schematic diagram of the structure of the gap compensation mechanism in an embodiment of the present invention;

[0047] Figure 6 This is a state diagram of the driving rod being synchronously extended when the tensioning force is adjusted in an embodiment of the present invention;

[0048] Figure 7 Schematic diagram of the joint surface of the driven end guide rail and the linear guide rail in an embodiment of the present invention;

[0049] Figure 8 Schematic diagram of the structure of the guide block in an embodiment of the present invention;

[0050] Figure 9 A schematic diagram and a partially enlarged view of the position of the hinge shaft in the strip groove when the tensioning force is adjusted in an embodiment of the present invention;

[0051] Figure 10A schematic diagram and a partially enlarged view of the position of the hinge shaft in the strip groove during gap compensation in an embodiment of the present invention;

[0052] Figure 11 This is a schematic diagram of the installation of the elastic component in the strip groove in an embodiment of the present invention;

[0053] Figure 12 Schematic diagram of the structure of the auxiliary driving rod in an embodiment of the present invention.

[0054] Figure numerals: 1. Tool magazine body; 2. Upper guide rail group; 21. Active end guide rail; 22. Driven end guide rail; 23. Linear guide rail; 3. Lower guide rail group; 4. Tensioning assembly; 41. Drive disk; 42. Telescopic shaft; 5. Gap compensation mechanism; 51. Compensation block; 52. Guide block; 521. First sliding wall; 522. Second sliding wall; 523. Bottom plate; 53. Drive assembly; 53a. Articulated shaft; 53b. Strip groove; 531. First connecting rod; 532. Second connecting rod; 533. Hydraulic cylinder; 54. Connecting piece; 55. Elastic assembly; 56. Linkage assembly; 57. Auxiliary drive rod. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0056] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0058] like Figures 1 to 12The chain guide device shown includes: a tool magazine body 1, an upper guide rail assembly 2, a lower guide rail assembly 3, and a tensioning assembly 4; the upper guide rail assembly 2 is arranged on the upper surface of the tool magazine body 1, and is used to guide the upper guide wheel assembly of the chain assembly; the lower guide rail assembly 3 is arranged on the lower surface of the tool magazine body 1, and is used to guide the lower guide wheel assembly of the chain assembly; the tensioning assembly 4 is arranged between the driven end guide rails 22 of the upper guide rail assembly 2 and the lower guide rail assembly 3, and is used to adjust the tension of the running chain;

[0059] Among them, a gap compensation mechanism 5 is provided at the upper guide rail group 2 and the lower guide rail group 3 corresponding to the end of the tool magazine body 1 close to the driven end guide rail 22. The gap compensation mechanism 5 includes two compensation blocks 51, a guide block 52, a drive component 53 and a distance sensor. The guide block 52 has a guide groove for accommodating the two compensation blocks 51; the drive component 53 is used to drive the two compensation blocks 51 to move closer to or away from each other; the distance sensor is used to monitor the moving distance of the driven end guide rail 22. If the moving distance is detected to be greater than the set value, the drive component 53 drives the two compensation blocks 51 into the gap.

[0060] When installing the guide device of the present invention, first, fix the tool magazine body 1 in the specified position; secondly, fix the upper guide rail group 2 to the upper surface of the tool magazine body 1, and fix the lower guide rail group 3 to the lower surface of the tool magazine body 1, and install the tensioning component 4 between the driven end guide rails 22 of the upper guide rail group 2 and the lower guide rail group 3, adjust the initial tensioning force of the tensioning component 4, so that the chain maintains an appropriate tensioning state in the initial state; then, at one end of the tool magazine body 1 close to the driven end guide rail 22, install the gap compensation mechanism 5 corresponding to the upper guide rail group 2 and the lower guide rail group 3 respectively, install two compensation blocks 51, and Place it in the guide groove of the guide block 52; install the drive component 53, and connect the drive component 53 with the compensation block 51 to ensure that the drive component 53 can drive the compensation block 51 normally; install the distance sensor and connect it to the control system to ensure that the sensor can accurately monitor the moving distance of the driven end guide rail 22; finally, debug the entire chain guide device, check whether the installation of each component is firm and whether the operation is smooth, calibrate the set value of the distance sensor, and ensure that when the moving distance of the driven end guide rail 22 exceeds the set value, the drive component 53 can promptly drive the compensation block 51 into the gap.

[0061] In the present invention, when the chain becomes loose during operation, the tensioning component 4 will automatically adjust the tensioning force to keep the chain in an appropriately tensioned state; the distance sensor monitors the moving distance of the driven end guide rail 22 in real time. When it is detected that the moving distance of the driven end guide rail 22 exceeds the set value, it indicates that the gap between the chain and the guide rail may increase. At this time, the driving component 53 will drive the two compensation blocks 51 into the gap between the linear guide rail 23 and the driven end guide rail 22 according to the signal of the sensor. After the compensation block 51 enters the gap, the stable contact between the chain and the guide rail is restored.

[0062] In the present invention, the dual guide rail form of the upper guide rail group 2 and the lower guide rail group 3 can better constrain the movement of the chain, so that it can be stably guided in both the upper and lower directions; and when the worn guide rail needs to be replaced, the upper guide rail group 2 or the lower guide rail group 3 can be operated separately without disassembling the entire guide rail system; and in the process of tensioning force adjustment, dynamic compensation of the gap is achieved through the cooperation of the compensation block 51, the guide block 52, the drive assembly 53 and the distance sensor. The compensated guide rail can provide stable support for the chain, reduce the shaking and deviation of the chain during operation, thereby improving the operation stability and positioning accuracy of the chain.

[0063] In the present invention, the upper guide rail group 2 and the lower guide rail group 3 both include an active end guide rail 21, a driven end guide rail 22 and two linear guide rails 23 located therebetween; the two linear guide rails 23 are arranged in parallel and form a closed-loop track with the active end guide rail 21 and the driven end guide rail 22, which can ensure that the chain always maintains stable guidance during operation, and the double guide rail constraint form further enhances the stability of the guidance. In addition, the two linear guide rails 23 adopt a multi-segment structure, which reduces the difficulty of processing, has good interchangeability, and improves the convenience of maintenance.

[0064] In the preferred embodiment, Figure 7 As shown, the contact surface between the driven end guide rail 22 and the two linear guide rails 23 is stepped. This stepped contact surface increases the effective contact area between the guide rails, thereby improving their load-bearing capacity and rigidity. It also distributes wear more evenly across the guide rails. Compared to traditional flat contact surfaces, the stepped design reduces gap increases caused by localized wear, thereby reducing maintenance costs.

[0065] like Figure 6 and Figure 8As shown, the guide block 52 is fixed between the two straight sections of the driven end guide rail 22; the guide block 52 includes a first sliding wall 521, a second sliding wall 522 and a bottom plate 523, and the two compensation blocks 51 are placed in a semi-closed guide groove surrounded by the first sliding wall 521, the second sliding wall 522 and the bottom plate 523; specifically, the length of the guide groove is greater than the sum of the lengths of the two compensation blocks 51, and the two compensation blocks 51 can completely enter the guide groove without affecting the splicing of the driven end guide rail 22 and the two linear guide rails 23, and the semi-closed structure formed by the first sliding wall 521, the second sliding wall 522 and the bottom plate 523 can better constrain the movement of the compensation block 51, so that it slides smoothly in the guide groove, and the lubricating layer on the contact surface reduces friction and wear during movement. Aligning the inner wall of the first sliding wall 521 with the cross-section of the driven end guide rail 22 or aligning the inner wall of the second sliding wall 522 with the cross-section of the linear guide rail 23 can provide a clear guide path for the compensation block 51. When the tensioning force is adjusted, the guide block 52 moves synchronously with the driven end guide rail 22. When the gap is greater than the set value, the two compensation blocks 51 slide in the guide groove and smoothly transition to the cross-section of the driven guide rail through the inner wall, ensuring the stability of the compensation block 51 during the sliding process and ensuring that the compensation block 51 can smoothly slide into the cross-section of the driven end guide rail 22.

[0066] like Figure 5 As shown, the driving assembly 53 of the present invention includes a first connecting rod 531, a second connecting rod 532 and a hydraulic cylinder 533. One end of the first connecting rod 531 and the second connecting rod 532 are hingedly arranged by a hinge shaft 53a, and the other end is hingedly connected to the two compensation blocks 51 respectively; the hydraulic cylinder 533 is arranged on the tool magazine body 1, and its driving rod is connected to the hinged ends of the first connecting rod 531 and the second connecting rod 532 through a connecting member 54;

[0067] The guide block 52 is set on the driven end guide rail 22. The force applied by the hydraulic cylinder 533 is transmitted through the first connecting rod 531 and the second connecting rod 532. One component of force drives the two compensation blocks 51 to move toward the gap, and the other component of force applies tension to the chain group through the driven end guide rail 22, while keeping the driven end guide rail 22 in a braking state, which helps to maintain the stability of the gap and avoid the occurrence of compensation errors or interference due to the floating support of the driven end guide rail 22.

[0068] like Figure 4 As shown, the tensioning assembly 4 includes a driving disk 41 and two telescopic shafts 42 arranged at one end of the driving disk 41 facing the tool magazine body 1; one end of the telescopic shaft 42 is fixed on the driving disk 41, and the other end extends into the tool magazine body 1, and the telescopic shaft 42 is elastically supported by a spring; when the tensioning assembly 4 drives the driven end guide rail 22 to move to tension the chain group, the driving rod of the hydraulic cylinder 533 moves synchronously with the driven end guide rail 22.

[0069] When the tension of the chain group is adjusted, the driven end guide rail 22 moves under the action of the tensioning assembly 4. At this time, the inlet and outlet oil pressures of the hydraulic cylinder 533 are in a balanced state, allowing the drive rod to smoothly follow the extension of the driven end guide rail 22. During the tension adjustment process, once the gap exceeds the set value, the rodless oil chamber of the hydraulic cylinder 533 is immediately filled with oil, and the oil pressure in the rodless oil chamber acts on the drive rod, causing the drive rod to enter the compensation action in advance; when the tension adjustment is completed, hydraulic oil continues to be injected into the rodless oil chamber. The drive rod does not need to start and wait, and can directly drive the two compensation blocks 51 to move through the first connecting rod 531 and the second connecting rod 532, so that the drive rod can quickly respond to the gap compensation demand, reducing the time delay in the compensation process and improving the operating efficiency of the entire system.

[0070] As a preferred solution, the connecting member 54 includes a connecting block connected to the driving rod, and two limit plates extending along the upper and lower edges of the connecting block; the first connecting rod 531 and the second connecting rod 532 are placed between the two limit plates, and a strip groove 53b is provided on the two limit plates along the driving direction of the driving rod. When the tension is adjusted, the hinge shaft 53a slides in the strip groove 53b. Figure 9 As shown, during the tension adjustment process of the driven end guide rail 22, the two compensation blocks 51 are driven to move synchronously by the guide block 52, and the hinge shaft 53a of the first connecting rod 531 and the second connecting rod 532 slides in the strip groove 53b. At this time, the driving rod is stationary.

[0071] In order to avoid unnecessary friction between the two compensation blocks 51 and the linear guide rail 23, as shown in FIG. Figure 11 As shown, an elastic component 55 is provided in the strip groove 53b on the side of the hinge shaft 53a close to the driven end guide rail 22; and the elastic force of the elastic component 55 is less than the elastic force of the tensioning component 4. Specifically, the elastic component 55 includes a flexible sheet located in the strip groove 53b and a rod disposed on the side of the flexible sheet away from the hinge shaft 53a. The rod passes through the side wall of the connecting member 54, and a spring is provided on the rod between the flexible sheet and the side wall of the strip groove 53b. The flexible sheet contacts the hinge shaft 53a. When the tensioning component 4 is operating, the elastic component 55 does not generate excessive resistance to the movement of the driven end guide rail 22, ensuring that the system can normally adjust the tension of the chain. In addition, the reverse action force of the elastic component 55 acts on the hinge ends of the first link 531 and the second link 532, forming a force opposite to the tensioning force, so that the two compensation blocks 51 approach each other and maintain a certain distance from the linear guide rail 23.

[0072] As a preferred embodiment of the above, in order to ensure that the upper guide rail group 2 and the lower guide rail group 3 achieve synchronous compensation, as shown in FIG. Figure 8As shown, a linkage assembly 56 is provided between the two sets of gap compensation mechanisms 5, and the linkage assembly 56 includes a connecting shaft and a sliding block; the sliding block is arranged in the slide groove of the tool magazine body 1, and the connecting shaft passes through the sliding block, and its two ends are respectively connected to the upper guide rail group 2 and the lower guide rail at the hinge ends of the first connecting rod 531 and the second connecting rod 532.

[0073] The sliding block slides within the chute in the direction of tension adjustment. The sliding block supports and drives the connecting shaft, thereby driving the first connecting rod 531 and the second connecting rod 532 of the upper guide rail assembly 2 and the lower guide rail assembly 3 to move synchronously. Furthermore, guide rails are provided on the contact surface between the sliding block and the sidewalls of the chute to reduce friction and ensure reliable movement direction.

[0074] In the present invention, the two compensation blocks 51 are in surface contact within the guide block 52. During the driving process, the driving force is perpendicular to the contact surface and passes through the first connecting rod 531 and the second connecting rod 532. In the initial state, the driving force that drives the two compensation blocks 51 to slide along the guide block 52 is relatively small, which seriously affects the initial response speed. In addition, due to the influence of the starting friction force, excessive driving force will be applied, which is prone to movement at the moment of movement. Therefore, in order to ensure the driving stability of the compensation blocks 51 during gap compensation, auxiliary driving rods 57 are provided on the opposite surfaces of the two compensation blocks 51. Figure 12 As shown, one end of the auxiliary drive rod 57 is embedded in the compensation block 51 and is elastically supported by a spring. The end extending out of the compensation block 51 abuts against the opposite compensation block 51, providing initial starting force for the two compensation blocks 51, optimizing the driving force of the entire system, and significantly improving the response speed of the compensation block 51 in the initial state.

[0075] The present invention also provides a chain-type horizontal tool magazine, which includes a chain guide device, a support frame, a chain group, a plurality of knife claws and a transmission drive mechanism. The support frame supports and fixes the chain guide device; the chain group is arranged on the chain guide device; the plurality of knife claws are arranged on a single chain link on the chain group; the transmission drive mechanism is used to drive the chain group to drive the plurality of knife claws for transmission.

[0076] The chain-type horizontal tool magazine with chain guide device significantly improves the operation accuracy, stability and efficiency of the tool magazine through precise guidance, fast gap compensation, reduced wear and optimized force transmission.

[0077] Those skilled in the art will appreciate that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chain guide device, characterized in that: include: Tool magazine body; An upper guide rail assembly is provided on the upper surface of the tool magazine body and is used to guide the upper guide wheel assembly of the chain assembly; A lower guide rail assembly is provided on the lower surface of the tool magazine body and is used to guide the lower guide wheel assembly of the chain assembly; A tensioning assembly is provided between the upper guide rail group and the driven end guide rail of the lower guide rail group, and is used to adjust the tension of the running chain; Wherein, the tool magazine body is provided with a gap compensation mechanism corresponding to the upper guide rail group and the lower guide rail group at one end close to the driven end guide rail, and the gap compensation mechanism includes: two compensation blocks; A guide block having a guide groove for accommodating the two compensation blocks; A driving component, used for driving the two compensation blocks to move closer to or away from each other; A distance sensor is used to monitor the movement distance of the driven end guide rail relative to the linear guide rail. If the monitored movement distance is greater than a set value, the driving component drives the two compensation blocks into the gap; The guide block is fixed between the two straight sections of the driven end guide rail; the guide block includes a first sliding wall, a second sliding wall and a bottom plate, and the two compensation blocks are placed in the semi-enclosed guide groove surrounded by the first sliding wall, the second sliding wall and the bottom plate; and the inner side wall of the first sliding wall is aligned with the cross section of the driven end guide rail or the inner side wall of the second sliding wall is aligned with the cross section of the linear guide rail; The drive assembly includes: The first connecting rod and the second connecting rod are hinged at one end through a hinge shaft, and the other ends are hinged to the two compensation blocks respectively; A hydraulic cylinder is provided on the tool magazine body, and a driving rod thereof is connected to the hinged ends of the first connecting rod and the second connecting rod through a connecting piece; Wherein, the guide block is arranged on the driven end guide rail, and the force applied by the hydraulic cylinder is transmitted through the first connecting rod and the second connecting rod, driving the two compensation blocks to move toward the gap, while keeping the driven end guide rail in a braking state; The tensioning assembly includes a driving disc and two telescopic shafts arranged at one end of the driving disc facing the tool magazine body; One end of the telescopic shaft is fixed to the driving disc, and the other end extends into the tool magazine body, and the telescopic shaft is elastically supported by a spring; When the tensioning assembly drives the driven end guide rail to move and tension the chain assembly, the driving rod of the hydraulic cylinder moves synchronously with the driven end guide rail.

2. The chain guide device according to claim 1, characterized in that The contact surface between the driven end guide rail and the two linear guide rails is stepped.

3. The chain guide device according to claim 1, characterized in that The connecting member includes a connecting block connected to the driving rod, and two limiting plates extending along the upper and lower edges of the connecting block; The first connecting rod and the second connecting rod are placed between the two limiting plates, and strip grooves are provided on the two limiting plates along the driving direction of the driving rod. When the tensioning force is adjusted, the hinge shaft slides in the strip grooves.

4. The chain guide device according to claim 3, characterized in that An elastic component is provided in the strip-shaped groove on a side of the hinge shaft close to the driven end guide rail; Furthermore, the elastic force of the elastic component is smaller than the elastic force of the tensioning component.

5. The chain guide device according to claim 1, characterized in that A linkage assembly is provided between the two sets of the gap compensation mechanisms, and the linkage assembly includes a connecting shaft and a sliding block; The sliding block is arranged in the sliding groove of the tool magazine body, the connecting shaft passes through the sliding block, and its two ends are respectively connected to the upper guide rail group and the lower guide rail at the hinge ends of the first connecting rod and the second connecting rod.

6. The chain guide device according to claim 1, characterized in that Auxiliary drive rods are provided on the opposite surfaces of the two compensation blocks. One end of the auxiliary drive rod is embedded in the compensation block and elastically supported by a spring. The end extending out of the compensation block abuts against the opposite compensation block.

7. A chain-type horizontal tool magazine, characterized in that: comprising a chain guide device as claimed in any one of claims 1 to 6; a support frame, supporting and fixing the chain guide device; a chain group, arranged on the chain guide device; a plurality of knife claws, arranged on individual chain links of the chain group; The transmission drive mechanism is used to drive the chain group to drive the plurality of knife claws to transmit.

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