Worm variable pitch module with limiting structure at one end
By setting a limit boss on the limit block of the worm gear variable distance module to prevent collision between the guide column and the end of the spiral track, the problem of easy collision between the guide column and the end of the spiral track in the existing worm gear variable distance module is solved, extending the service life of the equipment and reducing maintenance costs.
Patent Information
- Application Number
- CN202421183525.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-05-27
AI Technical Summary
When the existing worm gear module is working, the ends of the guide column and the spiral track are prone to collision, resulting in transmission deviation and high maintenance costs.
A worm gear shift module with a limit structure at one end is designed. By providing a fixed block and a limit block at the limit end of the worm, and a first limit boss and a second limit boss are provided on the limit block, so that when the limit block is rotated to a preset position, the first limit boss and the second limit boss are in conflict with each other, preventing the guide column from contacting the rail end.
It effectively avoids the end collision between the guide column and the spiral track, extends the service life of the worm and guide column, and reduces the maintenance cost of the worm variable distance module.
Smart Images
Figure CN222612108U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of pitch-changing modules, and in particular relates to a worm pitch-changing module with a limiting structure at one end. Background Art
[0002] With the increasing development of mechanized production, the use of automated production equipment has become universal. In the process of automated production, it often happens that the storage distance requirements for products are inconsistent in different processing steps of products. The worm pitch module is widely used to solve this problem due to its mature technology, low cost, and precise and controllable displacement.
[0003] The worm pitch change module changes the distance of the product carried on it by processing a spiral track on the worm. In order to smoothly transmit the product, most worm torque conversion modules need to use a slide to support the product for transmission. In order to increase the controllability of the worm torque conversion transmission, the slide often needs to move in the spiral track through a guide column. In order to ensure the rigidity of the guide column and the worm, generally, the guide column and the worm are made of metal materials. Once a collision occurs between the guide column and the spiral track, the spiral track and the guide column are easily deformed, resulting in transmission deviation of the worm torque conversion module.
[0004] Since the guide post is in direct contact with the spiral track, when the worm torque converter module is currently working, the guide post and the end of the spiral track are prone to collision, which greatly increases the maintenance cost of the worm torque converter module. Utility Model Content
[0005] In order to solve the problems raised in the above background technology, the utility model provides a worm pitch changing module with a limiting structure at one end, which has the characteristics of simple structure, stable operation, and effective avoidance of collision between the guide column and the end of the spiral track.
[0006] To achieve the above-mentioned purpose, the utility model provides a worm pitch changing module with a limiting structure at one end, including a worm, a worm limiting end is provided at one end of the worm, a fixed block is provided on the worm limiting end and can rotate relative to the fixed block, the worm limiting end is also sleeved with a limiting block, the limiting block can rotate relative to the fixed block, the limiting block is provided with a first limiting boss, the fixed block is provided with a second limiting boss, the worm rotates, driving the limiting block to rotate synchronously, the limiting block rotates to a preset position, and the first limiting boss conflicts with the second limiting boss.
[0007] As a further description of the above technical solution: the worm limiting end is integrally formed with the worm.
[0008] As a further description of the above technical solution: the limit block is provided with a fastening groove, and the first fastening hole and the second fastening hole are respectively provided on both sides of the fastening groove. The limit block is sleeved with the worm limit end, and the first fastening hole and the second fastening hole are connected by bolts.
[0009] As a further description of the above technical solution: the material of the limit block is aluminum.
[0010] As a further description of the above technical solution: it also includes a slide, the slide is provided with a positioning column, the positioning column is provided with a guide column at one end close to the worm, and when the worm rotates, the slide moves along the spiral track provided on the worm through the guide column.
[0011] As a further description of the above technical solution: it also includes a sensor (16).
[0012] Compared with the prior art, the beneficial effect of the present invention is that the present invention only needs to set the first limit boss and the second limit boss to collide with each other, so that the guide column cannot contact the head or the tail of the track, and the guide column will not collide with the head or the tail of the track, thereby extending the service life of the worm and the guide column.
[0013] The utility model has the characteristics of simple structure, stable operation, and effective avoidance of collision between the guide column and the end of the spiral track, and can effectively prolong the service life of the worm pitch change module and reduce the maintenance cost of the worm torque change module. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0015] Figure 1 This is a schematic diagram of the overall structure of a worm pitch-changing module with a limiting structure at one end proposed by the utility model;
[0016] Figure 2 A schematic diagram of a worm structure of a worm pitch-changing module with a limiting structure at one end proposed by the utility model;
[0017] Figure 3 This is a schematic diagram of the installation structure of a worm pitch-changing module with a limiting structure at one end proposed by the utility model;
[0018] Figure 4 This is a structural explosion diagram of a worm pitch-changing module with a limiting structure at one end proposed by the utility model.
[0019] Reference numerals:
[0020] 10... housing, 101... end cover, 102... support rod
[0021] 11……Motor
[0022] 12...slide table, 121...positioning column, 122...guide column
[0023] 13... worm, 131... worm limit end, 132... spiral track, 133... track head, 134... track tail
[0024] 14 ... limiting block, 141 ... first fastening hole, 142 ... second fastening hole, 143 ... fastening groove, 144 ... first limiting boss
[0025] 15...fixed block, 151...second limiting boss
[0026] 16...Sensors DETAILED DESCRIPTION
[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0028] See also Figure 1 The utility model provides a worm pitch-changing module with a limiting structure at one end, including a motor 11, a worm 13 and a slide 12.
[0029] Optionally, one end of the worm 13 is connected to the motor 11 via a bearing, and the motor 11 rotates to drive the worm 13 to rotate synchronously.
[0030] Optionally, a plurality of slides 12 are provided above the worm 13 , and the slides 12 can move relative to the worm 13 .
[0031] Optionally, the number of the slides 12 is the same as the number of the spiral tracks 132 provided on the worm 13 .
[0032] Optionally, in order to ensure the safety of the worm 13 during operation, a shell 10 is provided outside the worm 13 , and the worm 13 can rotate relative to the shell 10 . The shell 10 is sleeved on the outside of the worm 13 to wrap the worm 13 .
[0033] Optionally, a sensor 16 is further included. The sensor 16 is disposed at one end of the housing 10 away from the motor 11. When the sensor 16 senses that the slide 12 passes by, the motor 11 is notified to rotate in the reverse direction.
[0034] Optionally, there are two sensors 16 .
[0035] For further information, see Figure 2 , the worm 13 is provided with several spiral tracks 132 along the length direction, and the spiral track 132 has a track head 133 and a track tail 134. It is only necessary to set the distance between the track heads 133 and the distance between the track tails 134 as required, and the worm pitch-changing module can change the spacing of the items carried thereon. For example, if a product needs to be transported from point A with a spacing of 10mm to point B with a spacing of 20mm, it can be achieved by only setting the distance between the track heads 133 to 10mm and the distance between the track tails 134 to 20mm. It is also possible to set the overall running distance of the pitch-changing module to A to B, so that the product can be transported from A to B with a variable spacing, and vice versa. With the further deepening of the intelligence and automation of production, the precision requirements for product spacing are becoming higher and higher. For example, spiral tracks 132 with different spacings can be set to realize the transportation of products with different spacings, which is very flexible, convenient and easy to set.
[0036] For further information, see Figure 3 A worm limiting end 131 is provided at the other end of the worm 13 away from the motor 11 .
[0037] Optionally, in order to ensure the transmission reliability of the worm 13 , the worm limiting end 131 is integrally formed with the worm 13 .
[0038] Optionally, a fixing block 15 is provided on the worm limiting end 131 , and the worm 13 can rotate relative to the fixing block 15 .
[0039] Optionally, the fixing block 15 is sleeved outside the worm limiting end 131 .
[0040] Optionally, one end of the worm limiting end 131 away from the fixing block 15 is further sleeved with the limiting block 14 , and the limiting block 14 can rotate relative to the fixing block 15 .
[0041] Optionally, the fixing block 15 is connected to the housing 10 via threads.
[0042] Optionally, a first limiting boss 144 is provided on the limiting block 14 , and a second limiting boss 151 is provided on the fixing block 15 .
[0043] Optionally, a fastening groove 143 is further provided on the limit block 14, and a first fastening hole 141 and a second fastening hole 142 are respectively provided on both sides of the fastening groove 143. When the limit block 14 is sleeved with the worm limit end 131, the first fastening hole 141 and the second fastening hole 142 are fastened by bolt connection. With this arrangement, the connection between the limit block 14 and the worm limit end 131 is very reliable and convenient for assembly and disassembly.
[0044] In one embodiment, when the motor 11 rotates, it drives the worm 13 to rotate synchronously, and the worm 13 drives the limit block 14 to rotate synchronously. The limit block 14 rotates to a preset position, the first limit boss 144 conflicts with the second limit boss 151, and the sensor 16 notifies the motor 11 to rotate in the opposite direction.
[0045] Optionally, the first limiting boss 144 and the limiting block 14 are integrally formed.
[0046] Optionally, the second limiting boss 151 is connected to the fixing block 15 via bolts.
[0047] In one embodiment, in order to ensure the reliability of the connection of the second limiting boss 151, the second limiting boss 151 is in a "T" shape and is provided with two threaded holes.
[0048] Optionally, in order to ensure the connection rigidity of the limit block 14, the limit block 14 is made of metal.
[0049] Preferably, the material of the limit block 14 is aluminum.
[0050] Optionally, in order to facilitate disassembly, the housing 10 is fixedly provided with an end cover 101 , and the end cover 101 is arranged on a side of the limiting block 14 away from the fixing block 15 .
[0051] Optionally, the fixing block 15 is connected to the end cover 101 via threads.
[0052] For further information, see Figure 4 A positioning column 121 is provided on one side of the slide 12 close to the worm 13 , and a guide column 122 is provided on one end of the positioning column 121 close to the worm 13 . The slide 12 can move along the corresponding spiral track 132 through the guide column 122 .
[0053] Optionally, the guide column 122 is made of metal.
[0054] Optionally, the motor 11 rotates to drive the worm 13 to rotate, and the slide 12 moves along the corresponding spiral track 132 through the guide column 122 .
[0055] In one embodiment, when the motor 11 rotates clockwise, the worm 13 also rotates clockwise, driving the limit block 14 to move clockwise to the first preset position. At the same time, the worm 13 drives the slide 12 to move along the spiral track 132 from the track head 133 to the track tail 134. At this time, it is only necessary to set the first limit boss 144 to collide with the second limit boss 151, so that the guide column 122 cannot contact the track tail 134, and the guide column 122 and the track tail 134 will not collide.
[0056] In another embodiment, when the motor 11 rotates counterclockwise, the worm 13 also rotates counterclockwise, driving the limit block 14 to move counterclockwise to the second preset position. At the same time, the worm 13 drives the slide 12 to move along the spiral track 132 from the track tail 134 to the track head 133. At this time, it is only necessary to set the first limit boss 144 to collide with the second limit boss 151, so that the guide column 122 cannot contact the track head 133, and the guide column 122 and the track head 133 will not collide.
[0057] Optionally, since the guide column 122 cannot contact the rail head 133 and the rail tail 134 during operation, when setting, the length of the spiral rail 132 needs to have sufficient margin. At the same time, the distance between the rail heads 133 and the distance between the rail tails 134 also need to have a design margin, that is, the distance between the rail heads 133 needs to be smaller than the actual requirement, and the distance between the rail tails 134 needs to be larger than the actual requirement.
[0058] Optionally, in order to make the slide 12 run more stably, a support rod 102 is provided on the side of the housing 10 close to the worm 13, and the slide 12 is connected to the support rod 102 and can move relative to the support rod 102. In this arrangement, the slide 21 will be constrained by the support rod 102 and the spiral track 132 at the same time when moving, and the movement is very reliable and accurate. At the same time, when the parameters need to be changed, it is also convenient to set up.
[0059] Optionally, there are two support rods 102.
[0060] The utility model sets a fixed block 15 and a limit block 14 at the end of the worm 13 away from the motor 11, so that the worm 13 can rotate relative to the fixed block 15, and the limit block 14 rotates synchronously with the worm 13. When the worm 13 rotates, the limit block 14 is driven to rotate synchronously, and the limit block 14 rotates to a preset position, and the first limit boss 144 conflicts with the second limit boss 151, and the sensor 16 notifies the motor 11 to rotate in the opposite direction. The utility model only needs to set the first limit boss 144 and the second limit boss 151 to conflict, so that the guide column 122 cannot contact the track head 133 or the track tail 134, and the guide column 122 will not collide with the track head 133 or the track tail 134, thereby extending the service life of the worm 13 and the guide column 122. The utility model has the characteristics of simple structure, stable operation, and effective avoidance of collision between the guide column 122 and the end of the spiral track 132, which can effectively extend the service life of the worm pitch change module and reduce the maintenance cost of the worm torque change module.
[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
[0062] In the description of this specification, the description with reference to the terms "one embodiment", "another embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.
[0063] Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
[0064] The further embodiments of the utility model disclosed above are only used to help explain the utility model. The further embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model.
Claims
1. A worm pitch-changing module having a limiting structure at one end, comprising a worm (13), characterized in that: A worm limiting end (131) is provided at one end of the worm (13), a fixed block (15) is provided on the worm limiting end (131) and can rotate relative to the fixed block (15), the worm limiting end (131) is also sleeved with a limiting block (14), the limiting block (14) can rotate relative to the fixed block (15), a first limiting boss (144) is provided on the limiting block (14), and a second limiting boss (151) is provided on the fixed block (15), the worm (13) rotates, driving the limiting block (14) to rotate synchronously, the limiting block (14) rotates to a preset position, and the first limiting boss (144) abuts against the second limiting boss (151).
2. A worm pitch changing module with a limiting structure at one end according to claim 1, characterized in that: The worm limiting end (131) and the worm (13) are integrally formed.
3. A worm pitch-changing module with a limiting structure at one end according to claim 1, characterized in that: The limit block (14) is provided with a fastening groove (143), and a first fastening hole (141) and a second fastening hole (142) are respectively provided on both sides of the fastening groove (143). The limit block (14) is sleeved with the worm limit end (131), and the first fastening hole (141) and the second fastening hole (142) are connected by bolts.
4. A worm pitch-changing module with a limiting structure at one end according to claim 3, characterized in that: The material of the limiting block (14) is aluminum.
5. The worm pitch changing module with a limiting structure at one end according to claim 1, characterized in that: The invention also comprises a slide (12), wherein a positioning column (121) is provided on the slide (12), and a guide column (122) is provided at one end of the positioning column (121) close to the worm (13). When the worm (13) rotates, the slide (12) moves along a spiral track (132) provided on the worm (13) via the guide column (122).
6. A worm pitch changing module with a limiting structure at one end according to claim 1, characterized in that: A sensor (16) is also included.