High-precision quick positioning structure for workpiece tray

Abstract

The utility model belongs to the technical field of workpiece positioning, and particularly relates to a high-precision quick positioning structure for a workpiece tray. In order to solve the technical problem that the working efficiency is reduced due to the fact that positioning cannot be carried out quickly, the utility model provides the high-precision quick positioning structure for the workpiece tray, which comprises a connecting piece I and a positioning sleeve which are mounted on a processing platform, and a connecting piece II and a positioning pin which are mounted on the workpiece tray, the lowest height of the second connecting piece is higher than that of the positioning pin, a fillet is chamfered on the inner edge side of the upper portion of the positioning sleeve, and the lower end of the positioning pin is semicircular. Before the second connecting piece is connected with the first connecting piece, the semi-circular part on the positioning pin is guided to be inserted into the positioning sleeve in a sliding mode through the round corner on the positioning sleeve, so that the function of high-precision rapid positioning is achieved, and the positioning pin does not need to be accurately aligned with the positioning sleeve in a time-consuming mode.

Description

Technical Field

[0001] The utility model belongs to the technical field of workpiece positioning, and particularly relates to a high-precision and rapid positioning structure for a workpiece tray. Background Art

[0002] The workpiece tray positioning structure is mainly used to ensure that the workpiece can be accurately positioned and fixed during the processing or handling process. This structure is extremely important in an automated manufacturing system, especially in an environment that requires high precision and efficient production.

[0003] Currently, the accurate position of the workpiece tray on the processing platform is usually ensured by inserting a positioning pin installed on the workpiece tray into a positioning sleeve installed on the processing platform.

[0004] However, during the process of inserting the positioning pin into the positioning sleeve, it is often necessary to laboriously align the positioning pin with the positioning sleeve, and rapid positioning cannot be achieved. This operation will result in a reduction in work efficiency. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the above-mentioned disadvantages of the prior art and provide a high-precision and rapid positioning structure for a workpiece tray.

[0006] To solve the above technical problems, the utility model provides such a high-precision and rapid positioning structure for a workpiece tray, which includes a first connector and a positioning sleeve for installing on the processing platform, a second connector and a positioning pin for installing on the workpiece tray. The second connector is adapted to be connected to the first connector, the positioning pin is adapted to be inserted into the positioning sleeve, the lowest height of the second connector is higher than the lowest height of the positioning pin, a fillet is formed on the inner edge side of the upper part of the positioning sleeve, and the lower end of the positioning pin is semi-circular.

[0007] Preferably, it further includes a clamping block. A semi-circular clamping block is slidably arranged inside the positioning sleeve. A spring located inside the positioning sleeve is connected between the flat end of the clamping block and the positioning sleeve. An arc-shaped groove is formed on the positioning pin, and the arc-shaped end of the clamping block is adapted to be clamped into the arc-shaped groove.

[0008] Preferably, the first connector includes a connecting sleeve with a connecting groove formed inside. The shape of the connecting groove is arc-shaped; the second connector includes a connecting cylinder adapted to be inserted into the connecting sleeve. Three clamping balls adapted to be clamped into the connecting groove are movably embedded in the lower part of the connecting cylinder. The three clamping balls are circumferentially and evenly arranged around the connecting cylinder in a circular shape, and a connecting pin in contact and cooperation with the clamping balls is slidably arranged inside the connecting cylinder.

[0009] Preferably, it further includes a limiting ring. A limiting ring slidably arranged on the connecting cylinder is connected to the connecting pin, and the sliding range of the connecting pin on the connecting cylinder is limited by the limiting ring.

[0010] Preferably, a magnetic block is also included, and the lower end of the connecting pin and the inner bottom side of the connecting cylinder are both connected to the magnetic block, and the two magnetic blocks are magnetically matched.

[0011] Preferably, the lower end edge of the connecting pin has an outer rounded corner portion suitable for squeezing the stuck ball, and the lower part of the connecting pin has a resistance portion parallel to the connecting pin and suitable for resisting the stuck ball, and the resistance portion is connected to the outer rounded corner portion of the connecting pin.

[0012] Preferably, the lower portion of the connecting pin has an inner fillet portion connected to the abutting portion and suitable for abutting against the stuck ball, and the inner fillet portion and the outer fillet portion are respectively located at the upper and lower sides of the abutting portion.

[0013] On the basis of overcoming the shortcomings of the prior art, the utility model can achieve the following beneficial effects:

[0014] 1. Before the second connector is connected to the first connector, the rounded corners on the positioning sleeve will guide the semicircular part on the positioning pin to slide into the positioning sleeve, so as to achieve the function of high-precision and rapid positioning, without the need to spend time to accurately align the positioning pin with the positioning sleeve.

[0015] 2. When inserting the locating pin into the locating sleeve, the clamping block will automatically snap into the arc groove under the action of the spring, so as to achieve a more stable positioning effect; and the clamping ball will snap into the connection, so as to stably connect the connector 2 and the connector 1. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the assembly of a processing platform and a workpiece pallet in the prior art and the first and second connectors of the utility model.

[0017] Figure 2 for Figure 1 Schematic diagram of the upward viewing direction.

[0018] Figure 3 This is a schematic diagram of the positional relationship between the positioning sleeve and the positioning pin of the utility model.

[0019] Figure 4 This is a schematic diagram of the connection relationship between the positioning sleeve and the positioning pin of the utility model, wherein the positioning sleeve and the positioning pin are fully cut away.

[0020] Figure 5 It is a schematic diagram of the positional relationship between the first connector and the second connector of the utility model.

[0021] Figure 6 This is a schematic diagram of the connection relationship between the first connector and the second connector of the utility model, wherein the connecting sleeve is a full section.

[0022] Figure 7 This is a sectional view of the connecting tube and the connecting pin of the utility model in the front view direction.

[0023] Figure 8 This is a top view of the connecting cylinder and the clamping ball of the present utility model.

[0024] Figure 9 This is a schematic diagram showing the positional relationship between the positioning pin and the clamping ball of the present utility model.

[0025] The reference signs in the drawings provided by the present utility model are: 01 - processing platform, 02 - workpiece tray, 11 - connecting member one, 111 - connecting sleeve, 112 - connecting groove, 12 - connecting member two, 121 - connecting cylinder, 122 - clamping ball, 123 - connecting pin, 1230 - abutting portion, 21 - positioning sleeve, 22 - positioning pin, 23 - clamping block, 24 - spring, 3 - limiting ring, 4 - magnetic block. Detailed implementation manners

[0026] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0027] In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. The technical solutions of the present utility model will be clearly and completely described below with reference to the drawings. It should be noted that the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0028] A high-precision and fast positioning structure for a workpiece tray, such as Figure 1 , Figure 2 , Figure 3 and Figure 5As shown in the figure, it includes a first connecting member 11 and a positioning sleeve 21 for installing on the processing platform 01, and a second connecting member 12 and a positioning pin 22 for installing on the workpiece tray 02. The second connecting member 12 is adapted to be connected to the first connecting member 11, thereby installing the workpiece tray 02 on the upper side of the processing platform 01. The positioning pin 22 is adapted to be inserted into the positioning sleeve 21. The lowest height of the second connecting member 12 is higher than the lowest height of the positioning pin 22. Therefore, before the second connecting member 12 is connected to the first connecting member 11, the positioning pin 22 will first be inserted into the positioning sleeve 21, so as to perform positioning first and then connection, realizing the function of high-precision positioning. The inner edge side of the upper part of the positioning sleeve 21 is chamfered with a rounded corner, and the lower end of the positioning pin 22 is semi-circular. When the positioning pin 22 is inserted into the positioning sleeve 21, the rounded corner on the positioning sleeve 21 will guide the semi-circular part on the positioning pin 22 to slide and insert into the positioning sleeve 21, thereby realizing the function of high-precision and rapid positioning without the time-consuming need to accurately align the positioning pin 22 with the positioning sleeve 21.

[0029] As Figure 4 shown in the figure, it further includes a clamping block 23. A semi-circular clamping block 23 is slidably arranged inside the positioning sleeve 21. A spring 24 located inside the positioning sleeve 21 is connected between the flat end of the clamping block 23 and the positioning sleeve 21. An arc-shaped groove that is connected end to end is formed on the positioning pin 22, and the arc-shaped end of the clamping block 23 is adapted to be clamped into the arc-shaped groove. During the process of inserting the positioning pin 22 into the positioning sleeve 21, the clamping block 23 will automatically be clamped into the arc-shaped groove under the action of the spring 24, thereby achieving a more stable positioning effect.

[0030] As Figures 6 - 8 shown in the figure, the first connecting member 11 includes a connecting sleeve 111 with a connecting groove 112 formed inside, and the shape of the connecting groove 112 is arc-shaped; the second connecting member 12 includes a connecting cylinder 121 adapted to be inserted into the connecting sleeve 111. When connecting the second connecting member 12 to the first connecting member 11, the connecting cylinder 121 will be inserted into the connecting sleeve 111. Three clamping balls 122 are movably embedded in the lower part of the connecting cylinder 121 and are adapted to be clamped into the connecting groove 112. The three clamping balls 122 are circumferentially and evenly spaced with the connecting cylinder 121 as the center. A connecting pin 123 that is in contact and cooperation with the clamping balls 122 is slidably arranged inside the connecting cylinder 121. After the connecting cylinder 121 is inserted into the connecting sleeve 111, the connecting pin 123 is moved downward to press the clamping balls 122, and the clamping balls 122 will be clamped into the connecting groove 112 (the specific state is as Figure 6 shown in the figure), thereby completing the connection. When disassembly is required, first move the connecting pin 123 upward to release the clamping balls 122, and then move the connecting cylinder 121 upward to remove it from the connecting sleeve 111. The clamping balls 122 will be automatically pushed open by the connecting groove 112.

[0031] As Figure 6 and Figure 7As shown, it also includes a limit ring 3. The connecting pin 123 is connected to a limit ring 3 slidably arranged on the connecting cylinder 121. The limit ring 3 limits the sliding range of the connecting pin 123 on the connecting cylinder 121 to prevent the connecting pin 123 from detaching from the connecting cylinder 121.

[0032] like Figure 7 As shown, a magnetic block 4 is also included. The lower end of the connecting pin 123 and the inner bottom side of the connecting tube 121 are both connected with the magnetic block 4. When the connecting pin 123 is moved downward to connect the connecting member 2 12 to the connecting member 1 11, the two magnetic blocks 4 are magnetically attracted to cooperate with each other to prevent the connecting pin 123 from being displaced at will.

[0033] like Figure 9 As shown, the lower end edge of the connecting pin 123 has an outer rounded corner portion suitable for squeezing the card ball 122. During the downward movement of the connecting pin 123, the outer rounded corner portion can more easily squeeze the card ball 122 to move outward and snap into the connecting groove 112 on the connecting sleeve 111. The lower part of the connecting pin 123 has a resistance portion 1230 which is parallel to the connecting pin 123 and suitable for contacting the card ball 122. The resistance portion 1230 is connected to the outer rounded corner portion of the connecting pin 123. When the card ball 122 is inserted into the connecting groove 112, the resistance portion 1230 will resist the card ball 122. If at this time only the workpiece pallet 02 drives the connecting tube 121 to move upward, the card ball 122 will move inward under the squeezing action of the connecting groove 112 to press the resistance portion 1230, thereby clamping the connecting pin 123 to achieve the self-locking function. When unlocking is required, simply move the connecting pin 123 upward to unlock it.

[0034] like Figure 9 As shown, the lower part of the connecting pin 123 has an inner rounded corner portion connected to the interference portion 1230 and suitable for interfering with the locking ball 122, and the inner rounded corner portion and the outer rounded corner portion are respectively located on the upper and lower sides of the interference portion 1230. When the locking ball 122 contacts the interference portion 1230, the inner rounded corner portion of the connecting pin 123 will contact the locking ball 122, thereby increasing the friction contact area with the locking ball 122 and further improving the stability during locking.

[0035] Obviously, the embodiments described above are only part of the embodiments of the utility model, rather than all the embodiments. They only express the preferred implementation of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the utility model, several deformations, increases and decreases in quantity, improvements and substitutions can be made. Therefore, based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

Claims

1. A high-precision and rapid positioning structure for a workpiece pallet, characterized in that: The invention comprises a connecting piece 1 (11) and a positioning sleeve (21) for being mounted on a processing platform (01), a connecting piece 2 (12) and a positioning pin (22) for being mounted on a workpiece pallet (02), the connecting piece 2 (12) being suitable for being connected to the connecting piece 1 (11), the positioning pin (22) being suitable for being inserted into the positioning sleeve (21), the lowest height of the connecting piece 2 (12) being higher than the lowest height of the positioning pin (22), the inner edge side of the upper part of the positioning sleeve (21) being rounded, and the lower end of the positioning pin (22) being semicircular.

2. A high-precision and rapid positioning structure for a workpiece pallet according to claim 1, characterized in that: The invention also comprises a clamping block (23), a semicircular clamping block (23) is slidably arranged inside the positioning sleeve (21), a spring (24) is connected between the plane end of the clamping block (23) and the positioning sleeve (21), and an arc groove is formed on the positioning pin (22), and the arc groove is used for the arc end of the clamping block (23) to be clamped.

3. The high-precision and rapid positioning structure for a workpiece pallet according to claim 1, characterized in that: The first connecting member (11) comprises a connecting sleeve (111) with a connecting groove (112) formed therein, wherein the connecting groove (112) is in an arc shape; the second connecting member (12) comprises a connecting tube (121) adapted to be inserted into the connecting sleeve (111), a locking ball (122) adapted to be locked into the connecting groove (112) is movably embedded in the lower part of the connecting tube (121), and a connecting pin (123) slidably provided inside the connecting tube (121) and contacting and cooperating with the locking ball (122) is provided.

4. A high-precision and rapid positioning structure for a workpiece pallet according to claim 3, characterized in that: It also includes a limiting ring (3), the connecting pin (123) is connected to the limiting ring (3) which is slidably arranged on the connecting cylinder (121), and the limiting ring (3) limits the sliding range of the connecting pin (123) on the connecting cylinder (121).

5. The high-precision and rapid positioning structure for a workpiece pallet according to claim 3 is characterized in that: It also includes a magnetic block (4), the lower end of the connecting pin (123) and the inner bottom side of the connecting tube (121) are both connected to the magnetic block (4), and the two magnetic blocks (4) are magnetically attracted to each other.

6. The high-precision and rapid positioning structure for a workpiece pallet according to claim 3, characterized in that: The lower end edge of the connecting pin (123) has an outer rounded corner portion suitable for squeezing the locking ball (122), and the lower part of the connecting pin (123) has a contact portion (1230) which is parallel to the connecting pin (123) and suitable for contacting the locking ball (122), and the contact portion (1230) is connected to the outer rounded corner portion of the connecting pin (123).

7. A high-precision and rapid positioning structure for a workpiece pallet according to claim 6, characterized in that: The lower part of the connecting pin (123) has an inner fillet portion connected to the abutment portion (1230) and suitable for abutting the card ball (122), and the inner fillet portion and the outer fillet portion are respectively located at the upper and lower sides of the abutment portion (1230).

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