Suction head quick-changing device

Abstract

The utility model discloses a suction head quick-changing device which comprises a fixing rod connected with a machine body, an inner hole used for inserting a suction head is formed in one end of the fixing rod, a plurality of positioning balls are installed on the wall of the inner hole, the diameter of each positioning ball is larger than the wall thickness of the inner hole, and positioning grooves matched with the positioning balls are formed in an inserting arm of the suction head. A pressing assembly for pressing the positioning balls into the positioning grooves is arranged on the outer wall of the fixing rod; the suction head is inserted into the inner hole, the pressing assembly presses the positioning ball into the positioning groove, and the suction head is connected with the fixing rod. When the suction head is disassembled and washed, the suction head can be easily taken down from the fixing rod only by relieving the pressure of the pressing assembly on the positioning ball, disassembly and assembly are very convenient, and the replacement efficiency and the washing efficiency of the suction head are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of suction equipment, in particular to a suction head quick-change device. Background Art

[0002] With the improvement of automation level, the suction device is a commonly used transfer tool for small products or thin-sheet products. The suction head of the suction device is a consumable part that needs to be replaced and cleaned regularly. In the prior art, due to structural limitations, the work of disassembling and assembling the suction head has the following problems:

[0003] ⑴ Low replacement efficiency: It takes about 10 minutes for a skilled operator to disassemble and install the suction head once. After the installation is completed, it is easy to cause assembly deviation, resulting in the suction device being unable to be used normally.

[0004] ⑵ Frequent replacement: The suction head is in direct contact with the product, which can easily cause dirt and blockage. It needs to be removed and cleaned with alcohol every day.

[0005] ⑶ The original suction head and the mounting rod are matched with a cylinder plus two cut edges. It is difficult to ensure the precise matching of the circular hole processing size, and the actual object has an error gap that causes shaking;

[0006] ⑷ The suction head is made of aluminum and the mounting rod is made of stainless steel. Long-term impact use will cause the suction head to wear and the gap between the two will become larger, causing shaking.

[0007] Based on the above technical problems, there is currently a need for an air intake device with high disassembly and assembly efficiency, simple manufacturing process and stable performance. Utility Model Content

[0008] The technical problem to be solved by the utility model is to provide a quick-change device for suction heads which is convenient for disassembly and assembly.

[0009] In order to solve the above technical problems, the technical solution of the utility model is: a quick-change device for a suction head, comprising a fixing rod connected to a machine body, one end of the fixing rod is provided with an inner hole for inserting the suction head, a positioning ball is installed on the wall of the inner hole, the diameter of the positioning ball is larger than the wall thickness of the fixing rod at the inner hole, a positioning groove cooperating with the positioning ball is provided on the insertion arm of the suction head, and a clamping assembly for pressing the positioning ball into the positioning groove is provided on the outer wall of the fixing rod.

[0010] Preferably, the clamping assembly comprises a pressing ring slidably mounted on the fixing rod, the pressing ring is connected to an elastic assembly providing a clamping force, and the bottom of the inner wall of the pressing ring is provided with an inclined surface facing the positioning ball opening.

[0011] Preferably, the elastic component comprises a spring seat fixedly mounted on the fixing rod, a compression spring is mounted between the spring seat and the pressure ring, and the compression spring is sleeved on the fixing rod.

[0012] Preferably, the pressure ring includes a first ring body that is slidably matched with the fixing rod, the inclined surface is arranged on the first ring body, a second ring body extending around the compression spring is arranged on the first ring body, and a ring platform for convenient operation is arranged on the outer side of the second ring body.

[0013] Preferably, the positioning balls are evenly distributed circumferentially on the inner hole wall.

[0014] Preferably, the suction head is provided with an annular magnet arranged around the insertion arm.

[0015] Preferably, a pressure plate cooperating with the annular magnet is provided at the end of the fixing rod.

[0016] Preferably, a buffer pad is provided between the suction head and the fixing rod.

[0017] Preferably, the insertion arm is a square insertion arm, and a positioning groove is respectively provided on the two facing outer walls of the insertion arm, and the inner hole includes a square inner hole that forms four straight sides for positioning with the square insertion arm, and two positioning balls that respectively cooperate with the two positioning grooves are installed on the wall of the inner hole.

[0018] Preferably, the insertion arm is a circular insertion arm, the inner hole includes a circular hole that cooperates with the circular insertion arm, and mutually cooperating limiting planes are arranged between the circular insertion arm and the circular hole; a plurality of positioning pits are evenly distributed circumferentially on the outer wall of the insertion arm, and positioning balls with the same number as the positioning pits are installed on the wall of the inner hole.

[0019] The beneficial effects of this application are:

[0020] The suction head quick-change device described in the present application includes a fixing rod connected to a machine body, one end of the fixing rod is provided with an inner hole for inserting the suction head, a plurality of positioning balls are installed on the wall of the inner hole, the diameter of the positioning balls is larger than the wall thickness of the fixing rod at the inner hole, a positioning groove cooperating with the positioning balls is provided on the insertion arm of the suction head, and a clamping assembly for pressing the positioning balls into the positioning groove is provided on the outer wall of the fixing rod; the suction head is inserted into the inner hole, and the clamping assembly presses the positioning ball into the positioning groove to connect the suction head to the fixing rod; when disassembling and cleaning the suction head, it is only necessary to release the pressure of the clamping assembly on the positioning ball to easily remove the suction head from the fixing rod, and the disassembly and assembly are very convenient, thereby improving the replacement efficiency and cleaning efficiency of the suction head. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0022] Figure 1 This is a schematic diagram of the structure of the embodiment of the utility model Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the structure of the embodiment of the utility model Figure 2 ;

[0024] Figure 3 This is a diagram of the assembly state of an embodiment of the utility model;

[0025] Figure 4 It is a schematic diagram of the structure of the suction head of an embodiment of the utility model;

[0026] Figure 5 It is a structural schematic diagram of a fixing rod of an embodiment of the utility model;

[0027] In the figure: 11-fixing rod; 12-pressure plate; 13-inner hole; 14-wall thickness; 21-suction head; 22-insertion arm; 23-positioning groove; 3-positioning ball; 4-pressure ring; 41-first ring body; 42-second ring body; 43-ring platform; 44-inclined surface; 51-spring seat; 52-compression spring; 6-annular magnet; 7-buffer pad. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings and examples. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Needless to say, those skilled in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and descriptions are illustrative in nature and are not intended to limit the scope of protection of the claims.

[0029] Embodiment 1:

[0030] like Figures 1 to 5As shown, a quick-change device for suction tips includes a fixed rod 11 connected to the body of the suction device, one end of the fixed rod 11 is provided with an inner hole 13 for inserting the suction tip 21, a positioning ball 3 is installed on the wall of the inner hole 13, the positioning ball 3 is a steel ball, the diameter of the positioning ball 3 is greater than the wall thickness of the fixed rod 11 at the inner hole 13, and the wall thickness here refers to the wall thickness of the fixed rod 11 surrounding the inner hole 13, the insertion arm 22 of the suction tip 21 is provided with a positioning groove 23 that cooperates with the positioning ball 3, and the outer wall of the fixed rod 11 is provided with a clamping component that presses the positioning ball 3 into the positioning groove 23. The number of the positioning balls 3 can be set as needed. In order to achieve the best positioning effect, the number of positioning balls 3 is selected to be two or more.

[0031] The clamping assembly includes a pressure ring 4 that is slidably mounted on the fixed rod 11, the pressure ring 4 is connected to an elastic assembly that provides a clamping force, and the bottom of the inner wall of the pressure ring 4 is provided with an inclined surface 44 that faces the opening of the positioning ball 3. The elastic assembly includes a spring seat 51 that is fixedly mounted on the fixed rod 11, and a compression spring 52 is installed between the spring seat 51 and the pressure ring 4, and the compression spring 52 is mounted on the fixed rod 11. The pressure ring 4 includes a first ring body 41 that is slidably matched with the fixed rod 11, the inclined surface 44 is provided on the first ring body 41, and the first ring body 41 is provided with a second ring body 42 that extends around the compression spring 52, and the outer side of the second ring body 42 is provided with a ring platform 43 for convenient operation.

[0032] The positioning ball 3 has the freedom of movement to extend from both sides of the inner hole 13 wall. When the pressure ring 4 of the clamping assembly slides to release the pressure, the insertion arm 22 of the suction head 21 is inserted or pulled out, and the positioning ball 3 is pushed to move outward. Taking the insertion as an example, after the insertion is in place, the pressure ring 4 returns to its original position under the action of the clamping spring 52, and the inclined surface 44 of the pressure ring 4 pushes the positioning ball 3 to move inward to the positioning groove 23. The pressure ring 4 continues to move downward, and the inner wall of the pressure ring 4 locks the position of the positioning ball 3 in the state of clamping the positioning groove 23, thereby locking the insertion arm 22 of the suction head 21 in the fixing rod 11. Figure 1 The structure diagram of the suction head 21 after being installed is shown in FIG. Figure 2 The structural diagram shows that after the pressure ring 4 is pushed upward, the clamping force on the positioning ball 3 is released. When the suction head 21 needs to be pulled out, the pressure ring 4 is pushed upward to release the radial pressure of the pressure ring 4 on the positioning ball 3, and the suction head 21 is pulled downward. The inclined surface of the positioning groove 23 pushes the positioning ball 3 outward, releasing the locking force of the positioning ball 3 on the suction head 21, and the suction head 21 is pulled out.

[0033] The positioning balls 3 are evenly distributed on the wall of the inner hole 13 in the circumferential direction, providing even locking force for the insertion arms 22 of the suction head 21 in the circumferential direction.

[0034] The suction head 21 is provided with an annular magnet 6 arranged around the insertion arm 22. The end of the fixing rod 11 is provided with a pressure plate 12 matched with the annular magnet 6. The annular magnet 6 and the pressure plate 12 of the fixing rod 11 are adsorbed together to offset the gravity of the suction head 21.

[0035] A buffer pad 7 is provided between the suction head 21 and the fixing rod 11. Two buffer pads 7 are provided, one is located between the end of the fixing rod 11 and the suction head 21, and the other is located between the end of the insertion arm 22 and the bottom of the inner hole 13. The buffer pad 7 is preferably a silicone pad, and the shape of the buffer pad 7 is annular. The buffer pad 7 can buffer the impact force generated during insertion.

[0036] like Figure 4 and Figure 5 As shown, the insertion arm 22 is a square insertion arm 22, and a positioning groove 23 is respectively provided on two facing outer walls of the insertion arm 22, and the inner hole 13 includes a square inner hole 13 that forms four straight-side positioning with the square insertion arm 22, and two positioning balls 3 are installed on the wall of the inner hole 13, respectively matching with the two positioning grooves 23. The four outer straight sides of the square structure of the insertion arm 22 match with the four inner straight sides of the square inner hole 13 to form four straight-side positioning, which can prevent the insertion arm 22 from rotating circumferentially in the inner hole 13.

[0037] In the fixed state, the compression spring 52 presses the pressing ring 4 downward, and the pressing ring 4 presses the steel ball into the positioning groove 23 of the suction head 21 through the inclined surface 44 at the bottom. At this time, the suction head 21 is fixedly connected to the fixing rod 11 and cannot be removed; the annular magnet 6 is arranged on the suction head 21 and adsorbed together with the pressure plate 12 at the end of the fixing rod 11, and the magnetic attraction force offsets the gravity of the suction head 21, so that there is no displacement gap between the two; when sucking the product, the suction head 21 is pressed down, and a silicone pad is added between the suction head 21 and the fixing rod 11 as a buffer pad 7 to offset the instantaneous impact force and reduce the impact force between the suction head 21 and the fixing rod 11.

[0038] When removing the suction head 21, the pressure ring 4 is moved up to compress the compression spring 52, and a movable space appears behind the steel ball. The suction head 21 is moved downward, and the inclined surface of the positioning groove 23 on the suction head 21 insertion arm 22 pushes the steel ball to move outward. At this time, there is no obstruction between the suction head 21 and the fixing rod 11, and the suction head 21 can be freely removed. Similarly, when installing the suction head 21, the pressure ring 4 is moved up and the suction head 21 is inserted to complete the replacement of the suction head 21.

[0039] The suction head quick change device uses a compression spring 52 to press the steel ball to fix the suction head 21, so that the suction head 21 remains fixed and prevents it from falling off; the suction head 21 and the fixing rod 11 are positioned by four straight edges to reduce the difficulty of processing. The suction head 21 is made of SUS304 stainless steel, and the fixing rod 11 is made of SUS416 stainless steel. SUS416 adopts a heat treatment process to reduce wear.

[0040] The disassembly and assembly process of the suction head 21 can be achieved without the help of external tools, and can be operated with one hand. The suction head 21 is a plug-in device, which improves convenience, reduces the difficulty of replacement, has strong executability, and ensures daily cleaning on time. After the improvement, the single switching time is reduced from 300S to 30S, the overall efficiency is increased by 90%, and the yield rate is increased by 0.3%.

[0041] At present, the suction head quick change device is widely used in module production lines to solve the problem of slow suction head 21 replacement efficiency and improve the overall yield of the product. It can be fully promoted in the processing technology using the suction device.

[0042] Embodiment 2:

[0043] This embodiment is basically the same as the first embodiment, except that: the insertion arm 22 is a circular insertion arm 22, the inner hole 13 includes a circular hole that matches the circular insertion arm 22, and a mutually matching limiting plane is provided between the circular insertion arm 22 and the circular hole; a plurality of positioning pits are evenly distributed circumferentially on the outer wall of the insertion arm 22, and positioning balls 3 with the same number of the positioning pits are installed on the wall of the inner hole 13. During the insertion process, the circular insertion arm 22 is aligned with the limiting plane of the circular hole to achieve circumferential limiting and prevent rotation; at this time, the position of the positioning pit will correspond to the position of the positioning ball 3; the number of positioning balls 3 and positioning pits is preferably two, three or four, and the positioning balls 3 are evenly distributed circumferentially on the wall of the inner hole 13. In this embodiment, positioning grooves 23 can also be used instead of positioning pits.

[0044] The shapes of the insertion arm 22 and the inner hole 13 may be other shapes besides those described in the above two embodiments, such as a pentagonal structure, a triangular structure, etc.

[0045] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A quick-change device for a suction tip, comprising a fixing rod connected to a body, characterized in that: An inner hole for inserting the suction head is provided at one end of the fixing rod, a positioning ball is installed on the wall of the inner hole, the diameter of the positioning ball is larger than the wall thickness of the fixing rod at the inner hole, a positioning groove cooperating with the positioning ball is provided on the insertion arm of the suction head, and a clamping component for pressing the positioning ball into the positioning groove is mounted on the fixing rod.

2. The tip quick-change device according to claim 1, characterized in that: The clamping assembly comprises a clamping ring which is slidably mounted on the fixing rod, the clamping ring is connected with an elastic assembly which provides a clamping force, and the bottom of the inner wall of the clamping ring is provided with an inclined surface facing the opening of the positioning ball.

3. The tip quick-change device according to claim 2, characterized in that: The elastic component comprises a spring seat fixedly mounted on the fixing rod, a compression spring is mounted between the spring seat and the compression ring, and the compression spring is sleeved on the fixing rod.

4. The tip quick-change device according to claim 3, characterized in that: The pressure ring includes a first ring body that is slidably matched with the fixing rod, the inclined surface is arranged on the first ring body, a second ring body extending around the compression spring is arranged on the first ring body, and a ring platform for convenient operation is arranged on the outer side of the second ring body.

5. The tip quick change device according to claim 1, characterized in that: The positioning balls are evenly distributed circumferentially on the inner hole wall.

6. The tip quick-change device according to claim 1, characterized in that: The suction head is provided with an annular magnet arranged around the insertion arm.

7. The tip quick-change device according to claim 6, characterized in that: The end of the fixing rod is provided with a pressure plate which cooperates with the annular magnet.

8. The tip quick-change device according to claim 1, characterized in that: A buffer pad is arranged between the suction head and the fixing rod.

9. The quick-change device for suction tips according to any one of claims 1 to 8, characterized in that: The insertion arm is a square insertion arm, and a positioning groove is respectively arranged on the two facing outer walls of the insertion arm. The inner hole includes a square inner hole that forms four straight sides for positioning with the square insertion arm, and two positioning balls that respectively cooperate with the two positioning grooves are installed on the wall of the inner hole.

10. The quick-change device for suction tips according to any one of claims 1 to 8, characterized in that: The insertion arm is a circular insertion arm, the inner hole includes a circular hole that cooperates with the circular insertion arm, and a limiting plane that cooperates with each other is arranged between the circular insertion arm and the circular hole; a plurality of positioning pits are evenly distributed circumferentially on the outer wall of the insertion arm, and positioning balls with the same number as the positioning pits are installed on the wall of the inner hole.

Images