Positioning method of four-station feeding and discharging mechanism

Abstract

The invention relates to a positioning method, in particular to a positioning method of a four-station feeding and discharging mechanism, a positioning seat and a positioning mandrel are provided, the positioning seat is provided with a guide positioning hole matched with a guide rod, so that the positioning seat is mounted on a rotary loading disc, and the mounting position of a clamping mechanism is simulated; the positioning mandrel is vertically and fixedly installed at the end of the working shaft to simulate the axis of the working shaft, the positioning seat is further provided with a mandrel hole arranged in the vertical direction, and the positioning mandrel can be coaxially inserted into the mandrel hole. In the positioning process, a general assembly procedure does not need to be inserted, under the cooperation of the positioning seat, the positioning mandrel and the working shaft, the feeding and discharging mechanism and the working shaft can be independently positioned and assembled into a whole set, the process flow is clear, meanwhile, the assembling efficiency is improved, and the consistency of functional parts is guaranteed.

Description

Technical Field

[0001] The invention relates to a positioning method, in particular to a positioning method for a four-station loading and unloading mechanism. Background Art

[0002] The four-station loading and unloading mechanism is an automated device with four working positions, which is used to load and unload materials in the production line or during the processing. The four-station loading and unloading mechanism is widely used in the fields of automotive parts, aerospace, machinery manufacturing, mold manufacturing, and electronic manufacturing. Especially in production lines that require efficient, precise, and continuous loading and unloading operations, the mechanism reduces manual intervention through automated loading and unloading operations, improves the continuity and stability of the production line, and thus improves the overall production efficiency.

[0003] like Figure 1 As shown, there is an existing four-station loading and unloading mechanism, wherein the frame includes a bracket for installing a working shaft and a rotary plate for arranging a clamping mechanism, the working shaft is an auxiliary clamping top mechanism, and the axis of the auxiliary clamping top mechanism coincides with the axis of the corresponding station, the rotary plate is rotatably sleeved on the bracket, and four clamping mechanisms forming a ring layout are arranged on the rotary plate to clamp the workpieces on the four stations. However, this four-station loading and unloading mechanism requires precise positioning and assembly of the four clamping mechanisms and the four stations to ensure the precise positioning and loading and unloading of the device during subsequent use. However, the positioning method in the prior art usually requires the general assembly process to be interspersed during the positioning process, and the positioning and assembly of the four-station loading and unloading mechanism cannot be completed at one time, resulting in low positioning and assembly efficiency. Therefore, it is urgently necessary to propose a new positioning method for a four-station loading and unloading mechanism. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a positioning method for a four-station loading and unloading mechanism to solve the problem of low positioning and assembly efficiency in the prior art.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A positioning method for a four-station loading and unloading mechanism, the four-station loading and unloading mechanism comprising a bracket and a rotary plate rotatably sleeved on the bracket, the rotary plate having four clamping mechanism installation positions corresponding to a No. 1 station, a No. 2 station, a No. 3 station and a No. 4 station arranged in sequence in a clockwise direction, the clamping mechanism installation position having a guide rod for positioning, a first working axis and a second working axis at an angle of 90° are installed on adjacent two sides of the bracket, and the first working axis and the second working axis are arranged at the No. 1 station and the No. 2 station, respectively, and The axes of the first working axis and the second working axis coincide with the working axes of the first and second workstations, respectively. A positioning seat and a positioning spindle are provided. The positioning seat has a guide positioning hole matched with the guide rod so as to install the positioning seat on the rotary mounting plate, thereby simulating the installation position of the clamping mechanism. The positioning spindle is vertically fixedly installed on the end of the working axis to simulate the axis of the working axis. The positioning seat is also provided with a spindle hole arranged in the vertical direction, and the positioning spindle can be coaxially inserted into the spindle hole. The positioning method specifically comprises the following steps:

[0007] Step 1. Install the positioning mandrel on the first working shaft and the second working shaft, and adjust the radial runout of the positioning mandrel so that its axis coincides with the working axis;

[0008] Step 2. The positions on the rotary turntable for installing the clamping mechanism are all equipped with the positioning seats through guide rods, and the guide rods at the position of the No. 1 station are adjusted so that the spindle hole in the positioning seat at the No. 1 station coincides with the positioning spindle on the first working axis, and the side surface of the positioning seat is parallel to the side reference surface of the bracket;

[0009] Step 3. Lift the first working axis to disengage the positioning spindle on the first working axis from the corresponding positioning seat, then rotate the rotary turntable 90° clockwise to rotate the positioning seat originally located at station No. 1 to station No. 2, and press down the second working axis located at station No. 2 to make the positioning spindle on the second working axis coincide with the spindle hole in the positioning seat currently located at station No. 2. If the positioning spindle on the second working axis cannot coincide with the spindle hole in the positioning seat currently located at station No. 2, adjust the guide rod to make the positioning spindle on the second working axis coincide with the spindle hole in the positioning seat currently located at station No. 2.

[0010] Synchronously adjust the positioning seat currently located at the No. 1 station so that the spindle hole in the positioning seat at the No. 1 station coincides with the positioning spindle on the first working axis, and at the same time make the side surface of the positioning seat parallel to the side reference surface of the bracket;

[0011] Step 4. Repeat the above steps 2 and 3, so that the mandrel holes in the positioning seats at the second station, the third station and the fourth station can overlap with the positioning mandrels of the first working axis and the second working axis respectively;

[0012] When the spindle holes in the positioning seats at any two adjacent workstations can coincide with the positioning spindles of the first working axis and the second working axis at the same time, the positioning of the four-station loading and unloading mechanism is completed.

[0013] Further, in step 3, the rotary turntable is driven to rotate by a servo motor to ensure that the rotation degree of the rotary turntable is 90°.

[0014] Furthermore, after the turntable is rotated 90° clockwise, the parallelism between the side surface of the positioning seat rotated from the first station to the second station and the reference surface of the bracket side is detected to verify whether the turntable has rotated 90°. If they are parallel, it can be determined that the turntable has rotated 90°.

[0015] The beneficial effects of the present invention are:

[0016] The present invention provides a positioning method for a four-station loading and unloading mechanism. During the positioning process, no assembly process is required. With the cooperation of the positioning seat, the positioning spindle and the working shaft, the loading and unloading mechanism can be positioned and assembled into a set with the small column component (working shaft). While the process flow is clear, the assembly efficiency is improved and the consistency of the functional components is guaranteed.

[0017] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0019] Figure 1 It is a schematic diagram of the layout of four stations in a four-station loading and unloading mechanism in the prior art;

[0020] Figure 2 This is a schematic diagram of the layout of four stations in a four-station loading and unloading mechanism in an embodiment;

[0021] Figure 3 This is a schematic diagram of the assembly of a frame in a four-station loading and unloading mechanism in an embodiment;

[0022] Figure 4It is a schematic diagram of the principle of a positioning method of a four-station loading and unloading mechanism in the embodiment;

[0023] Figure 5 Schematic diagram of adjusting the parallelism of the positioning seat in a positioning method of a four-station loading and unloading mechanism in an embodiment Figure 1 ;

[0024] Figure 6 Schematic diagram of adjusting the parallelism of the positioning seat in a positioning method of a four-station loading and unloading mechanism in an embodiment Figure 2 ;

[0025] Figure 7 It is a schematic diagram of the positioning of the positioning seat in a positioning method of a four-station loading and unloading mechanism in the embodiment;

[0026] Figure 8 It is a structural schematic diagram of the positioning seat in the embodiment;

[0027] Fig. 9 is a cross-sectional view of a positioning seat in an embodiment;

[0028] Fig.10 It is a structural schematic diagram of the positioning mandrel in the embodiment;

[0029] Fig.11 It is a cross-sectional view of the positioning spindle in the embodiment.

[0030] Reference numerals: guide positioning hole 1, spindle hole 2, fixed connection hole 3. DETAILED DESCRIPTION

[0031] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0032] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0033] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0034] like Figure 1 As shown, an existing four-station loading and unloading mechanism is used to clamp workpieces on four stations, including a frame, the frame includes a bracket for installing a working axis and a rotary plate for arranging a clamping mechanism, a first working axis and a second working axis with a 90° angle are installed on adjacent two sides of the bracket, the working axis is an auxiliary clamping top mechanism, and the axis of the auxiliary clamping top mechanism coincides with the axis of the corresponding station, the rotary plate is rotatably sleeved on the bracket, and four clamping mechanisms forming a ring layout are provided on the rotary plate to clamp the workpieces on the four stations.

[0035] See also Figure 2 to Figure 11 , is a positioning method for a four-station loading and unloading mechanism, which aims to achieve Figure 1 The four workstations shown are coaxially positioned and indexed with the axes of the first working shaft and the second working shaft, and finally the four loading and unloading positions can coincide with the axes of the first working shaft and the second working shaft at 90° through rotation.

[0036] like Figure 2 As shown, in order to realize the positioning of the above four-station loading and unloading mechanism, the following prerequisites need to be met:

[0037] 1. The four workstations can coincide with the center of the axis of the first working shaft by rotation; 2. The four workstations can coincide with the center of the axis of the second working shaft by rotation; 3. After the four workstations are exchanged 90°, the centers of the workstations can coincide with the axes of the first working shaft and the second working shaft at the same time.

[0038] like Figure 8 to Figure 11As shown, the positioning method of the four-station loading and unloading mechanism provides a positioning seat and a positioning spindle. The positioning seat is used to simulate the clamping mechanism installed on the rotary plate. It has a guide positioning hole 1 that cooperates with the guide rod on the rotary plate so that the positioning seat can be installed on the rotary plate to simulate the installation position of the clamping mechanism. The positioning spindle is provided with a fixed connecting hole 3 so that it can be vertically fixedly installed on the end of the working shaft to simulate the axis of the working shaft. The positioning seat is also provided with a spindle hole 2 arranged in the vertical direction, and the positioning spindle can be coaxially inserted into the spindle hole 2.

[0039] Preferably, in this embodiment, the rotary turntable is driven to rotate by a servo motor to ensure that the rotary turntable has a standard angle of 90°.

[0040] like Figure 3 and Figure 4 To achieve the above requirements, the following conditions must be met:

[0041] 1. The parallelism between the rotary turntable and the bottom surface of the bracket should be met; 2. The coaxiality adjustment between the rotary turntable and the center of the bracket should be achieved; 3. The 90° accurate division of the rotary turntable angle should be met; 4. The coaxiality between the central axis hole 2 of the positioning seat and the positioning spindle should be achieved; 5. The reference side of the positioning seat should be parallel to the positive side reference surface of the bracket.

[0042] like Figure 5 to Figure 7 As shown, the positioning method of the four-station loading and unloading mechanism specifically includes the following steps:

[0043] Step 1. Install a positioning mandrel on the first working axis and the second working axis, and adjust the radial runout of the positioning mandrel so that its axis can replace the working axis;

[0044] Step 2. The positions on the rotary turntable for installing the clamping mechanism are all equipped with positioning seats through guide rods, and the guide rods at the position of the No. 1 station are adjusted so that the spindle hole in the positioning seat at the No. 1 station coincides with the positioning spindle on the first working axis, and the side surface of the positioning seat is parallel to the side reference surface of the bracket; Figure 5 shown.

[0045] Step 3. Lift the first working axis to disengage the positioning spindle on the first working axis from the corresponding positioning seat, then start the servo motor to rotate the rotary turntable 90° clockwise, so that the positioning seat originally located at station No. 1 is rotated to station No. 2, and the second working axis located at station No. 2 is pressed down to make the positioning spindle on the second working axis coincide with the spindle hole in the positioning seat currently located at station No. 2. If the positioning spindle on the second working axis cannot coincide with the spindle hole in the positioning seat currently located at station No. 2, adjust the guide rod to make the positioning spindle on the second working axis coincide with the spindle hole in the positioning seat currently located at station No. 2; Figure 6 shown.

[0046] Synchronously adjust the positioning seat currently located at the No. 1 station so that the spindle hole in the positioning seat at the No. 1 station coincides with the positioning spindle on the first working axis, and at the same time make the side surface of the positioning seat parallel to the side reference surface of the bracket;

[0047] Step 4. Repeat steps 2 and 3 above, so that the spindle holes in the positioning seats originally located at the second, third and fourth stations can overlap with the positioning spindles of the first working axis and the second working axis respectively, and at the same time, the spindle holes in the positioning seats at any two adjacent stations can overlap with the positioning spindles of the first working axis and the second working axis at the same time, and the positioning of the loading and unloading mechanism of the four stations is completed. Figure 7 shown.

[0048] Preferably, in step 3, after the servo motor is started to rotate the turntable clockwise by 90°, the parallelism between the side surface of the positioning seat rotated from station No. 1 to station No. 2 and the reference surface of the bracket side is detected to verify whether the turntable has rotated 90°. If they are parallel, it can be determined that the rotation degree of the turntable is 90°.

[0049] Secondly, after completing the positioning of the above-mentioned four-station loading and unloading mechanism, the accuracy of positioning and graduation can usually be determined by the parallelism error between the positioning seat reference surface and the 90° process reference surface. When the parallelism fluctuation between the positioning seat reference surface and the process reference surface is within 0.03, the requirements are met.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A positioning method for a four-station loading and unloading mechanism, the four-station loading and unloading mechanism comprising a bracket and a rotary plate rotatably sleeved on the bracket, the rotary plate having four clamping mechanism mounting positions corresponding to the No. 1 station, the No. 2 station, the No. 3 station and the No. 4 station arranged in a clockwise direction, respectively, the clamping mechanism mounting position having a guide rod for positioning, a first working axis and a second working axis at an angle of 90° are installed on adjacent two sides of the bracket, and the first working axis and the second working axis are respectively arranged at the No. 1 station and the No. 2 station, and the axes of the first working axis and the second working axis coincide with the working axes of the No. 1 station and the No. 2 station, respectively, and the characteristics are as follows: A positioning seat and a positioning spindle are provided. The positioning seat has a guide positioning hole matched with the guide rod, so that the positioning seat is installed on the rotary mounting plate to simulate the installation position of the clamping mechanism. The positioning spindle is vertically fixedly installed on the end of the working shaft to simulate the axis of the working shaft. The positioning seat is also provided with a spindle hole arranged in the vertical direction, and the positioning spindle can be coaxially inserted into the spindle hole. The positioning method specifically includes the following steps: Step 1. Install the positioning mandrel on the first working shaft and the second working shaft, and adjust the radial runout of the positioning mandrel so that its axis coincides with the working axis; Step 2. The positions on the rotary turntable for installing the clamping mechanism are all equipped with the positioning seats through guide rods, and the guide rods at the position of the No. 1 station are adjusted so that the spindle hole in the positioning seat at the No. 1 station coincides with the positioning spindle on the first working axis, and the side surface of the positioning seat is parallel to the side reference surface of the bracket; Step 3. Lift the first working axis to disengage the positioning spindle on the first working axis from the corresponding positioning seat, then rotate the rotary turntable 90° clockwise to rotate the positioning seat originally located at station No. 1 to station No. 2, and press down the second working axis located at station No. 2 to make the positioning spindle on the second working axis coincide with the spindle hole in the positioning seat currently located at station No.

2. If the positioning spindle on the second working axis cannot coincide with the spindle hole in the positioning seat currently located at station No. 2, adjust the guide rod to make the positioning spindle on the second working axis coincide with the spindle hole in the positioning seat currently located at station No.

2. Synchronously adjust the positioning seat currently located at the No. 1 station so that the spindle hole in the positioning seat at the No. 1 station coincides with the positioning spindle on the first working axis, and at the same time make the side surface of the positioning seat parallel to the side reference surface of the bracket; Step 4. Repeat the above steps 2 and 3, so that the mandrel holes in the positioning seats at the second station, the third station and the fourth station can overlap with the positioning mandrels of the first working axis and the second working axis respectively; When the spindle holes in the positioning seats at any two adjacent workstations can coincide with the positioning spindles of the first working axis and the second working axis at the same time, the positioning of the four-station loading and unloading mechanism is completed.

2. The positioning method of the four-station loading and unloading mechanism according to claim 1 is characterized in that: In step 3, the rotary turntable is driven to rotate by a servo motor to ensure that the rotation degree of the rotary turntable is 90°.

3. The positioning method of the four-station loading and unloading mechanism according to claim 1 is characterized in that: After the turntable is rotated 90° clockwise, the parallelism between the side surface of the positioning seat rotated from the first station to the second station and the reference surface on the bracket side is detected to verify whether the turntable has rotated 90°. If they are parallel, it can be determined that the turntable has rotated 90°.

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