A precision worm multi-station transmission device

Abstract

The present invention relates to the technical field of automated production line equipment and metal processing transmission equipment, specifically a precision worm multi-station transmission device, comprising a tooling plate, a No. 1 follower bearing, a No. 2 follower bearing, a buffer shock-absorbing assembly, a No. 2 station worm, a No. 1 station worm and a driving assembly, a buffer shock-absorbing assembly is provided on the lower end surface of the tooling plate, and the buffer shock-absorbing assembly is used for the tooling plate to transition from the No. 1 station worm to the No. 2 station worm to prevent shock and collision, and the driving assembly is provided with two groups, which are respectively used to drive the No. 1 station worm and the No. 2 station worm to rotate, the No. 1 follower bearing is arranged on the lower end surface of the tooling plate, and the No. 2 follower bearing is arranged on the buffer shock-absorbing assembly, and the No. 1 follower bearing and the No. 2 follower bearing cooperate with the No. 1 station worm and the No. 2 station worm to drive the tooling plate to move. The present invention can design multiple stations to work in series synchronously, can process multiple workpieces at the same time, and the movement of each station is individually controlled, and each station can be accurately positioned, meeting various working conditions of processing and assembly.

Description

Technical Field

[0001] The invention relates to the technical field of automated production line equipment and metal processing transmission equipment, in particular to a precision worm multi-station transmission device. Background Art

[0002] Automated production line equipment and metal processing production lines, as important components of the manufacturing industry, mainly involve automated line production equipment and a series of production activities such as processing, forming, and assembly of metal materials.

[0003] Traditional automated production line equipment and metal processing conveyor lines are generally composed of multiple belt conveyors, roller conveyors, etc., which are connected end to end to form a continuous conveyor chain. The tooling plates on the conveyor chain are used to transfer metal parts to different workstations to facilitate the processing of the workpieces. However, all tooling plates in this conveying method move synchronously, and can only move forward or backward synchronously. It is not suitable for the working conditions of processing different metal parts at the same time. Because different metal parts have different processing methods, the tooling plates drive the metal parts to move back and forth in coordination with the processing equipment. Therefore, the transmission method of synchronous movement of tooling plates on traditional conveyor lines is not suitable for processing multiple metal parts at the same time, and traditional conveyor chains cannot be accurately positioned.

[0004] In view of this, the present invention proposes a precision worm multi-station transmission device to solve the above technical problems. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] The present invention designs multiple stations to work in series and synchronously, so that multiple stations can produce and assemble products at the same time, and the movement of each station is individually controlled, and each station can be accurately positioned, meeting various working conditions of automated production line equipment and metal processing.

[0007] A precision worm multi-station transmission device comprises a tooling plate, a No. 1 follower bearing, a No. 2 follower bearing, a buffer shock-absorbing assembly, a No. 2 station worm, a No. 1 station worm and a driving assembly. The buffer shock-absorbing assembly is provided on the lower end surface of the tooling plate. The buffer shock-absorbing assembly is used for shock absorption and collision prevention of the tooling plate when it transitions from the No. 1 station worm to the No. 2 station worm. The driving assembly is provided with two groups, which are respectively used to drive the No. 1 station worm and the No. 2 station worm to rotate. The No. 1 follower bearing is provided on the lower end surface of the tooling plate, and the No. 2 follower bearing is provided on the buffer shock-absorbing assembly. The No. 1 follower bearing and the No. 2 follower bearing cooperate with the No. 1 station worm and the No. 2 station worm to drive the tooling plate to move.

[0008] As a preferred solution of the precision worm multi-station transmission device provided by the present invention, the lower end surface of the tooling plate is fixedly connected with a connecting seat, and the connecting seat is provided with the No. 1 follower bearing.

[0009] As a preferred solution of the precision worm multi-station transmission device provided by the present invention, a groove is provided at the lower end of the tooling plate, the groove is opened on the lower end surface of the tooling plate, and the buffer shock absorbing assembly is provided in the groove.

[0010] As a preferred solution of the precision worm multi-station transmission device provided by the present invention, the buffer shock absorbing assembly includes a rear dead gear, the rear dead gear is fixedly connected to one end of the groove close to the No. 1 follower bearing, the rear dead gear is provided with a No. 1 spring hole at one end away from the No. 1 follower bearing, one end of a spring is fixedly connected to the No. 1 spring hole, a slider is slidably connected to the groove, a No. 2 spring hole is provided at one end of the slider close to the rear dead gear, one end of the spring away from the rear dead gear extends into the No. 2 spring hole and is fixed, a front dead gear is fixedly connected to one end of the groove away from the No. 1 follower bearing, one end of the slider is in contact with the front dead gear, a slide rail is provided on the inner wall of the groove, and the left and right ends of the slider slide in the slide rail.

[0011] As a preferred solution of the precision worm multi-station transmission device provided by the present invention, the second follower bearing is fixedly connected to the end of the sliding block away from the tooling plate.

[0012] As a preferred solution of the precision worm multi-station transmission device provided by the present invention, the No. 2 station worm is arranged under the tooling plate, the No. 2 follower bearing and the groove of the No. 2 station worm are slidably connected, the end of the No. 2 station worm close to the No. 1 station worm is provided with a No. 2 starting end arc surface, the head and tail of the No. 2 starting end arc surface are respectively provided with a No. 2 starting end arc surface starting point and a No. 2 starting end arc surface ending point, a No. 2 starting end surface semi-screw mouth is provided on one side of the No. 2 starting end surface, and the No. 2 starting end surface semi-screw mouth is connected to the groove of the No. 2 station worm.

[0013] As a preferred solution of the precision worm multi-station transmission device provided by the present invention, the No. 1 station worm is provided under the tooling plate, the No. 1 station worm is located on one side of the No. 2 station worm, the No. 1 station worm and the No. 2 station worm are coaxial, the No. 1 follower bearing and the groove of the No. 1 station worm are slidably connected, a No. 1 tail end arc surface is provided at one end of the No. 1 station worm close to the No. 2 station worm, the head and tail of the No. 1 tail end arc surface are respectively provided with the No. 1 tail end arc surface end point position and the No. 1 tail end arc surface start point position, a No. 1 tail end surface semi-screw mouth is provided on one side of the No. 1 tail end surface, and the No. 1 tail end surface semi-screw mouth is connected to the groove of the No. 1 station worm.

[0014] As a preferred solution of the precision worm multi-station transmission device provided by the present invention, the driving assembly includes a servo motor, a first pulley is fixedly connected to the output shaft of the servo motor, a second pulley is provided on one side of the first pulley, the second pulley is fixedly connected to the ends of the second station worm and the first station worm, and the first pulley and the second pulley are rotationally connected by a transmission belt.

[0015] Beneficial effects of the present invention:

[0016] The present invention sets a buffer shock-absorbing component. When the No. 2 follower bearing contacts the end face of the No. 2 station worm, the No. 2 follower bearing is subjected to pressure. The No. 2 follower bearing moves itself after the slider compresses the spring to prevent the No. 2 follower bearing and the No. 2 station worm end face from hard contact, playing the role of shock absorption, buffering and collision prevention of the initial contact. The compressed spring has elastic potential energy. When the No. 2 station worm drives the No. 2 initial end face half screw mouth to rotate to one side of the No. 2 follower bearing, the spring stretches and drives the No. 2 follower bearing to enter the No. 2 initial end face half screw mouth. Then the No. 2 follower bearing enters the groove of the No. 2 station worm through the No. 2 initial end face half screw mouth, completing the transition connection between the stations. At the same time, the present invention can design multiple stations to work in series synchronously, and can process multiple workpieces at the same time. The movement of each station is individually controlled, and each station can be accurately positioned to meet the various working conditions of the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0018] in:

[0019] Figure 1It is a schematic diagram of the overall structure of a precision worm multi-station transmission device;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure enlargement in the middle;

[0021] Figure 3 It is an exploded schematic diagram of the overall structure of a precision worm multi-station transmission device;

[0022] Figure 4 It is a schematic diagram of the connection structure between the tooling plate and the buffer shock absorbing component in a precision worm multi-station transmission device;

[0023] Figure 5 It is a schematic diagram of the overall structure of a precision worm multi-station transmission device when the tooling plate transitions from station one to station two;

[0024] Figure 6 It is a schematic diagram of the state of a tooling plate transitioning from station one to station two in a precision worm multi-station transmission device;

[0025] Figure 7 It is a schematic diagram of the overall structure of a multi-station series working device in a precision worm multi-station transmission device;

[0026] Figure 8 It is a schematic diagram of the connection structure of the worm at the No. 1 station in a precision worm multi-station transmission device;

[0027] Fig. 9 This is a schematic diagram of the worm connection structure at the second station in a precision worm multi-station transmission device.

[0028] In the figure:

[0029] 1. Tooling plate; 2. Connecting seat; 3. No. 1 follower bearing;

[0030] 4. Buffer shock absorbing assembly; 41. Rear dead stop; 42. No. 1 spring hole; 43. Spring; 44. Slider; 45. Front dead stop; 46. No. 2 spring hole;

[0031] 5. No. 2 follower bearing; 6. Groove;

[0032] 7. Worm at the second station; 71. Starting point of the arc surface at the second starting end; 72. Half screw mouth of the arc surface at the second starting end; 73. End point of the arc surface at the second starting end; 74. Arc surface at the second starting end;

[0033] 8. Driving assembly; 81. Servo motor; 82. Pulley No. 1; 83. Pulley No. 2; 84. Transmission belt;

[0034] 9. Worm at workstation No. 1; 91. End point of curved surface at tail end No. 1; 92. Half screw mouth of curved surface at tail end No. 1; 93. Starting point of curved surface at tail end No. 1; 94. Curved surface at tail end No. 1. DETAILED DESCRIPTION

[0035] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, 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 embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Example 1

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 8 and Fig. 9 As shown, a precision worm multi-station transmission device includes a tooling plate 1, a No. 1 follower bearing 3, a No. 2 follower bearing 5, a buffer shock-absorbing assembly 4, a No. 2 station worm 7, a No. 1 station worm 9 and a driving assembly 8. The lower end surface of the tooling plate 1 is provided with a buffer shock-absorbing assembly 4, and the buffer shock-absorbing assembly 4 is used for the tooling plate 1 to transition from the No. 1 station worm 9 to the No. 2 station worm 7 to reduce shock and prevent collision. The driving assembly 8 is provided with two groups, which are respectively used to drive the No. 1 station worm 9 and the No. 2 station worm 7 to rotate. The No. 1 follower bearing 3 is arranged on the lower end surface of the tooling plate 1, and the No. 2 follower bearing 5 is arranged on the buffer shock-absorbing assembly 4. The No. 1 follower bearing 3 and the No. 2 follower bearing 5 cooperate with the No. 1 station worm 9 and the No. 2 station worm 7 to drive the tooling plate 1 to move;

[0038] The lower end surface of the tooling plate 1 is fixedly connected with a connecting seat 2, and a No. 1 follower bearing 3 is provided on the connecting seat 2;

[0039] A second station worm 7 is provided below the tooling plate 1, and a second follower bearing 5 is movably connected to the groove of the second station worm 7. A second starting end arc surface 74 is provided at one end of the second station worm 7 close to the first station worm 9, and a second starting end arc surface starting point position 71 and a second starting end arc surface ending point position 73 are respectively provided at the head and tail of the second starting end arc surface 74, and a second starting end surface semi-screw mouth 72 is provided on one side of the second starting end arc surface 74, and the second starting end surface semi-screw mouth 72 is connected to the groove of the second station worm 7;

[0040] A No. 1 station worm 9 is provided below the tooling plate 1. The No. 1 station worm 9 is located on one side of the No. 2 station worm 7. The No. 1 station worm 9 and the No. 2 station worm 7 are coaxial. The No. 1 follower bearing 3 and the groove of the No. 1 station worm 9 are slidably connected. A No. 1 tail end arc surface 94 is provided at one end of the No. 1 station worm 9 close to the No. 2 station worm 7. The head and tail of the No. 1 tail end arc surface 94 are respectively provided with a No. 1 tail end arc surface end point 91 and a No. 1 tail end arc surface start point 93. A No. 1 tail end surface semi-screw mouth 92 is provided on one side of the No. 1 tail end surface 94. The No. 1 tail end surface semi-screw mouth 92 is connected to the groove of the No. 1 station worm 9.

[0041] The driving assembly 8 includes a servo motor 81, and a first pulley 82 is fixedly connected to the output shaft of the servo motor 81. A second pulley 83 is provided on one side of the first pulley 82. The second pulley 83 is fixedly connected to the ends (or tails) of the second station worm 7 and the first station worm 9. The first pulley 82 and the second pulley 83 are rotationally connected via a transmission belt 84.

[0042] In the embodiment, two groups of servo motors 81 are started synchronously, and the output shaft of the servo motor 81 drives the No. 1 pulley 82 to rotate, the No. 1 pulley 82 drives the transmission belt 84 to rotate, and the transmission belt 84 drives the No. 2 pulley 83 to rotate. The two groups of No. 2 pulleys 83 respectively drive the No. 1 station worm 9 and the No. 2 station worm 7 to rotate. Because the No. 1 follower bearing 3 at the lower end of the tooling plate 1 is slidably connected to the groove of the No. 1 station worm 9, and the tooling plate 1 is limited by components such as slide rails and pulleys, the tooling plate 1 can only move along the axis of the No. 1 station worm 9 (the specific limiting structure is not drawn, and the prior art will not be described in detail), so when the No. 1 station worm 9 rotates, it will drive the tooling plate 1 to move along the axis of the No. 1 station worm 9, and the direction of movement of the tooling plate 1 depends on the rotation direction of the servo motor 81.

[0043] See also Figure 6 , in the process of the tooling plate 1 moving from the workstation 1 to the workstation 2, the tooling plate 1 is first delivered by the No. 1 workstation worm 9 and the No. 1 follower bearing 3. In the initial state, the No. 2 follower bearing 5 and the No. 1 follower bearing 3 are both in the groove of the No. 1 workstation worm 9. As the tooling plate 1 moves, the No. 2 follower bearing 5 first passes through the No. 1 tail end face semi-screw mouth 92 of the No. 1 workstation worm 9, then passes through the No. 1 tail end arc surface starting point 93, and then reaches the blank area between the No. 1 workstation worm 9 and the No. 2 workstation worm 7. At this time, the No. 1 follower bearing 3 is still in a sliding connection state with the No. 1 workstation worm 9. Under the transmission of the No. 1 workstation worm 9, the tooling plate 1 drives the No. 2 follower bearing 5 to move toward the end of the No. 2 workstation worm 7. At this time, the No. 2 follower bearing 5 and the No. 2 workstation worm 7 have two contact modes. This embodiment introduces the first contact mode:

[0044] When the No. 2 follower bearing 5 moves to the side of the No. 2 starting end arc surface 74 of the No. 2 station worm 7, the No. 2 starting end surface half screw 72 just contacts the No. 2 follower bearing 5 (the No. 2 follower bearing 5 is in a moving state, and the No. 2 station worm 7 is in a rotating state when it contacts the No. 2 follower bearing 5). The No. 2 follower bearing 5 directly enters the groove of the No. 2 station worm 7 from the No. 2 starting end surface half screw 72. The rotating No. 2 station worm 7 drives the tooling plate 1 to move toward the position of the second station. At this time, the No. 2 follower bearing 5 is rotated and connected to the No. 2 station worm 7. The No. 1 follower bearing 3 is rotated and connected to the No. 1 station worm 9. As the tooling plate 1 moves, the No. 2 follower bearing 5 moves to the No. 2 station worm 7. Figure 6 As shown in the movement, the No. 1 follower bearing 3 passes through the No. 1 tail end face semi-screw mouth 92 of the No. 1 station worm 9, then passes through the No. 1 tail end arc surface starting point 93, and then reaches the blank area between the No. 1 station worm 9 and the No. 2 station worm 7, and finally the No. 1 follower bearing 3 enters the groove of the No. 2 station worm 7 from the No. 2 starting end face semi-screw mouth 72, and the No. 1 follower bearing 3 and the No. 2 follower bearing 5 drive the tooling plate 1 to enter the station 2 area where the No. 2 station worm 7 is located, completing the transition between different stations.

[0045] like Figure 7 As shown, the device can be provided with multiple groups, which are used in series to meet the processing of multiple workpieces, and the tooling plates 1 of each group can be independently controlled by the servo motor 81 at the bottom to move forward and backward to meet different processing scenarios.

[0046] Embodiment 2

[0047] This embodiment is basically the same as the first embodiment, except that Figure 1-Figure 5 As shown, a groove 6 is provided at the lower end of the tooling plate 1, and the groove 6 is opened on the lower end surface of the tooling plate 1, and a buffer shock absorbing component 4 is provided in the groove 6;

[0048] The buffer shock absorbing assembly 4 includes a rear dead stop 41, which is fixedly connected to one end of the groove 6 near the No. 1 follower bearing 3, and a No. 1 spring hole 42 is provided at one end of the rear dead stop 41 away from the No. 1 follower bearing 3, and one end of a spring 43 is fixedly connected to the No. 1 spring hole 42, and a slider 44 is slidably connected in the groove 6, and a No. 2 spring hole 46 is provided at one end of the slider 44 near the rear dead stop 41, and one end of the spring 43 away from the rear dead stop 41 extends into the No. 2 spring hole 46 and is fixed, and a front dead stop 45 is fixedly connected to one end of the groove 6 away from the No. 1 follower bearing 3, and one end of the slider 44 abuts against the front dead stop 45, and a slide rail is provided on the inner wall of the groove 6, and the left and right ends of the slider 44 slide in the slide rail;

[0049] A second follower bearing 5 is fixedly connected to one end of the slider 44 away from the tooling plate 1;

[0050] In the embodiment, there are two contact modes between the No. 2 follower bearing 5 and the No. 2 station worm 7. This embodiment introduces the second contact mode:

[0051] In a few cases, when the No. 2 follower bearing 5 contacts the end face of the No. 2 station worm 7, the No. 2 initial end face half screw mouth 72 just contacts the No. 2 follower bearing 5, and the No. 2 follower bearing 5 directly enters the groove of the No. 2 station worm 7 from the No. 2 initial end face half screw mouth 72. However, in reality, there are many factors that affect the No. 2 follower bearing 5 entering the groove of the No. 2 station worm 7, such as the rotation speed of the No. 2 station worm 7 is inconsistent with the No. 1 station worm 9. Therefore, when the No. 2 follower bearing 5 contacts the end face of the No. 2 station worm 7, the No. 2 follower bearing 5 will not directly enter the No. 2 initial end face half screw mouth 72, but will abut against the No. 2 initial end arc surface 74. After the No. 2 follower bearing 5 is subjected to pressure, the spring 43 is compressed by the slider 44 to play the role of shock absorption, buffering and collision prevention of the initial contact. At the same time, it can only slide in the groove 6 under the limit of the rear dead gear 41 and the front dead gear 45. After the initial contact, the No. 2 follower bearing 5 is attached to the No. 2 starting end arc surface 74 of the No. 2 station worm 7, and the No. 2 follower bearing 5 is located between the starting point 71 of the No. 2 starting end arc surface and the ending point 73 of the No. 2 starting end arc surface. When the No. 2 station worm 7 rotates, the No. 2 starting end arc surface 74 exerts pressure on the No. 2 follower bearing 5, and the No. 2 follower bearing 5 compresses the spring 43 through the slider 44, and the spring 43 maintains elastic potential energy. When the No. 2 starting end surface semi-screw mouth 72 in the No. 2 station worm 7 contacts the No. 2 follower bearing 5, the spring 43 stretches and drives the No. 2 follower bearing 5 into the No. 2 starting end surface semi-screw mouth 72 through the slider 44, and then the No. 2 follower bearing 5 enters the groove of the No. 2 station worm 7 through the No. 2 starting end surface semi-screw mouth 72. The buffer and shock absorbing assembly 4 has the function of correcting the position of the No. 2 follower bearing 5 when the return angle of the No. 2 station worm 7 is incorrect.

[0052] The workflow is as follows:

[0053] In the initial state, the tooling plate 1 is located at the workstation 1. First, the servo motor 81 is started. The servo motor 81 drives the No. 1 workstation worm 9 and the No. 2 workstation worm 7 to rotate. When the No. 1 workstation worm 9 rotates, the tooling plate 1 drives the No. 1 follower bearing 3 and the No. 2 follower bearing 5 to move toward the workstation 2. Driven by the No. 1 workstation worm 9, the No. 2 follower bearing 5 leaves the No. 1 workstation worm 9 and moves toward the direction of the No. 2 workstation worm 7. Because the No. 1 follower bearing 3 is still in the groove of the No. 1 workstation worm 9 at this time, the No. 1 follower bearing 3, the tooling plate 1 and the No. 2 follower bearing 5 can still drive the No. 1 follower bearing 3, the tooling plate 1 and the No. 2 follower bearing 5 to move toward the workstation 2 direction when the No. 1 workstation worm 9 rotates. The No. 2 follower bearing 5 contacts the No. 2 starting end arc surface 74 of the No. 2 workstation worm 7. At this time, the No. 2 follower bearing 5 is subjected to pressure and drives the slider 44 to compress the spring 43. At the same time, the No. 2 station worm 7 is in rotation. When the No. 2 station worm 7 drives the No. 2 starting end face semi-screw mouth 72 to rotate to one side of the No. 2 follower bearing 5, the No. 2 follower bearing 5 is no longer subjected to pressure, and the spring 43 stretches, driving the No. 2 follower bearing 5 to enter the No. 2 starting end face semi-screw mouth 72 through the slider 44. Subsequently, the No. 2 follower bearing 5 enters the groove of the No. 2 station worm 7. Then the No. 1 follower bearing 3 breaks away from the No. 1 station worm 9 and enters the groove of the No. 2 station worm 7. The No. 1 follower bearing 3 and the No. 2 follower bearing 5 drive the tooling plate 1 to enter the station 2 area where the No. 2 station worm 7 is located, completing the transition between different stations.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A precision worm multi-station transmission device, comprising a tooling plate (1), a first follower bearing (3), a second follower bearing (5), a buffer shock absorbing assembly (4), a second station worm (7), a first station worm (9) and a driving assembly (8), characterized in that: The lower end surface of the tooling plate (1) is provided with the buffer shock absorbing assembly (4), and the buffer shock absorbing assembly (4) is used for shock absorption and collision prevention when the tooling plate (1) transitions from the No. 1 station worm gear (9) to the No. 2 station worm gear (7); The driving assembly (8) is provided with two groups, which are respectively used to drive the first station worm (9) and the second station worm (7) to rotate; The first follower bearing (3) is arranged on the lower end surface of the tooling plate (1), and the second follower bearing (5) is arranged on the buffer shock absorbing assembly (4). The first follower bearing (3) and the second follower bearing (5) cooperate with the first station worm (9) and the second station worm (7) to drive the tooling plate (1) to move; The lower end of the tooling plate (1) is provided with a groove (6), the groove (6) is opened on the lower end surface of the tooling plate (1), and the buffer shock absorbing component (4) is arranged in the groove (6); The buffer shock absorbing assembly (4) comprises a rear dead stop (41), the rear dead stop (41) being fixedly connected to one end of the groove (6) close to the No. 1 follower bearing (3), the rear dead stop (41) being provided with a No. 1 spring hole (42) at one end away from the No. 1 follower bearing (3), one end of a spring (43) being fixedly connected to the No. 1 spring hole (42), a slider (44) being slidably connected to the groove (6), the slider (44) being provided with a No. 2 spring hole (46) at one end close to the rear dead stop (41), the end of the spring (43) being away from the rear dead stop (41) extending into the No. 2 spring hole (46) and being fixed thereto, a front dead stop (45) being fixedly connected to one end of the groove (6) away from the No. 1 follower bearing (3), one end of the slider (44) being in contact with the front dead stop (45), a slide rail being provided on the inner wall of the groove (6), and the left and right ends of the slider (44) slidingly sliding in the slide rail.

2. The precision worm multi-station transmission device as claimed in claim 1, characterized in that: The lower end surface of the tooling plate (1) is fixedly connected to a connecting seat (2), and the connecting seat (2) is provided with the first follower bearing (3).

3. The precision worm multi-station transmission device as claimed in claim 2, characterized in that: The second follower bearing (5) is fixedly connected to one end of the sliding block (44) away from the tooling plate (1).

4. The precision worm multi-station transmission device as claimed in claim 3, characterized in that: The second station worm (7) is provided below the tooling plate (1), the second follower bearing (5) and the groove of the second station worm (7) are slidably connected, the second station worm (7) is provided with a second starting end arc surface (74) at one end close to the first station worm (9), the first and last ends of the second starting end arc surface (74) are respectively provided with a second starting end arc surface starting point position (71) and a second starting end arc surface ending point position (73), a second starting end surface semi-screw mouth (72) is provided on one side of the second starting end arc surface (74), and the second starting end surface semi-screw mouth (72) is connected to the groove of the second station worm (7).

5. The precision worm multi-station transmission device as claimed in claim 4, characterized in that: The first station worm (9) is provided below the tooling plate (1), the first station worm (9) is located on one side of the second station worm (7), the first station worm (9) and the second station worm (7) are coaxial, the first follower bearing (3) and the groove of the first station worm (9) are slidably connected, the first station worm (9) is provided with a first tail end arc surface (94) at one end close to the second station worm (7), the first tail end arc surface end point (91) and the first tail end arc surface start point (93) are respectively provided at the head and tail of the first tail end arc surface (94), a first tail end surface semi-screw mouth (92) is provided on one side of the first tail end arc surface (94), and the first tail end surface semi-screw mouth (92) is connected to the groove of the first station worm (9).

6. The precision worm multi-station transmission device as claimed in claim 1, characterized in that: The driving assembly (8) comprises a servo motor (81), a first belt pulley (82) being fixedly connected to an output shaft of the servo motor (81), a second belt pulley (83) being provided on one side of the first belt pulley (82), the second belt pulley (83) being fixedly connected to ends of the second station worm (7) and the first station worm (9), and the first belt pulley (82) and the second belt pulley (83) being rotationally connected via a transmission belt (84).

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