A clamping device capable of opening and closing on one side

Abstract

The present invention discloses a clamping device capable of opening and closing on one side, comprising a frame, a rotating assembly arranged on the frame rotatably around a first axis, a palm piece connected to the rotating assembly, a first clip connected to the palm piece, a second clip connected to the palm piece rotatably around a second axis, the second clip being used to rotate and cooperate with the first clip to open and close; the clamping device also comprises a driving member rotatably connected to the palm piece around a third axis, a connecting rod rotatably connected to the driving member and the second clip at both ends, an opening and closing roller rotatably connected to the driving member around a fourth axis, an opening and closing cam arranged on the frame and used to drive the driving member to rotate around the third axis through the opening and closing roller; when the second clip is in the clamping position, the extension line of the connecting rod intersects perpendicularly with the third axis. The clamping device capable of opening and closing on one side of the present invention can not only prevent the clip from being damaged by the clamped member when taking and placing, but also prevent the clamped member from accidentally falling off during the transmission process.

Description

Technical Field

[0001] The invention relates to the technical field of bottle blowing, and in particular to a clamping device capable of opening and closing on one side. Background Art

[0002] With the development of rotary blow molding machines, the single-mold operation speed requirements of blow molding machines are getting higher and higher. With the increase of single-mold speed, the speed requirements for the robot for taking and delivering bottle blanks are also getting higher and higher, so the handover accuracy requirements for the robot will also become higher and higher.

[0003] In the prior art, the clamp is usually directly squeezed open by the preform, and then the elastic restoring force of the spring drives the clamp to return and clamp the preform. When the clamp is taking and delivering the preform, it needs to rotate. If the fit between the bottle and the mold is large, or the preform has a certain resistance, or the delivery accuracy is wrong, the rear clamp will be forcibly pulled open, resulting in spring failure and failure to take out the bottle or preform.

[0004] To address this situation, there is a structure that uses a cam to drive the clamps to pre-open. When the preform enters, the clamps on both sides clamp the preform through the elastic restoring force of the spring. Although this structure can prevent the preform from being damaged, since the preform is clamped only by the elastic force of the spring, spring failure can easily cause the preform to fall and be damaged during the conveying process. Summary of the invention

[0005] The purpose of the present invention is to provide a clamping device that can be opened and closed on one side, which can not only prevent the clamping piece from being damaged by the clamped piece during taking and placing, but also prevent the clamped piece from accidentally falling off during the conveying process.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A clamping device capable of opening and closing on one side, comprising a frame, a rotating assembly rotatably arranged on the frame around a first axis, characterized in that: the clamping device further comprises a palm piece connected to the rotating assembly, a first clip connected to the palm piece, and a second clip rotatably connected to the palm piece around a second axis, the second clip being used to rotate and cooperate with the first clip to open and close;

[0008] The clamping device also includes a driving member rotatably connected to the palm member around a third axis, a connecting rod rotatably connected to the driving member and the second clamp at both ends, an opening and closing roller rotatably connected to the driving member around a fourth axis, and an opening and closing cam provided on the frame and used to drive the driving member to rotate around the third axis through the opening and closing roller;

[0009] The second clamp has a clamping position and an open position. When the second clamp is in the clamping position, an extension line of the connecting rod intersects the third axis perpendicularly.

[0010] Preferably, the driving member and the connecting rod are rotatably connected via a first connecting shaft, and a limiting member for limiting the first connecting shaft is provided on the palm member, and the limiting member has a first limiting end for limiting the first connecting shaft in the clamping position and a second limiting end for limiting the first connecting shaft in the open position.

[0011] More preferably, the driving member and the second clip are respectively arranged on both sides of the palm member, the limiting member is a limiting hole opened on the palm member, and the first connecting shaft is passed through the limiting hole; the two ends of the limiting hole are the first limiting end and the second limiting end respectively.

[0012] More preferably, the limiting hole is arc-shaped, and the radius of the limiting hole is the rotation radius of the first connecting shaft around the third axis.

[0013] Preferably, the first axis, the second axis and the third axis are parallel to each other.

[0014] Preferably, the clamping device also includes an elastic member whose two ends are respectively connected to the driving member and the second clamp; the second clamp is provided with a second connecting shaft passing through the palm member, the axis of the second connecting shaft is the second axis, and one end of the elastic member is connected to the second connecting shaft; when the second clamp is switched from the clamping position to the open position, the other end of the elastic member rotates around the third axis away from the second connecting shaft, and the elastic member is used to provide an elastic restoring force to drive the driving member to rotate and reset.

[0015] More preferably, the driving member is provided with a third connecting shaft for connecting the other end of the elastic member, the third connecting shaft and the first clamp are located on one side of the clamping center, and the second clamp is located on the other side of the clamping center.

[0016] Preferably, the rotating assembly includes a rotating member rotatably provided on the frame around the first axis, and a swinging member connected to the rotating member and swingable around the fifth axis; the clamping device also includes a swinging roller rotatably connected to the rotating member around the sixth axis and connected to the swinging member, and a swinging cam provided on the frame and used to drive the swinging member to swing around the fifth axis through the swinging roller; the palm member is connected to the swinging member.

[0017] More preferably, the swinging member includes a swinging body connected to the swinging roller, and a sliding member slidably arranged on the swinging body along the direction of its own length extension; the clamping device also includes a telescopic roller connected to the sliding member and rotatable around a seventh axis, and a telescopic cam arranged on the frame and used to drive the sliding member to slide along the direction of its own length extension through the telescopic roller; the palm member is connected to the sliding member.

[0018] More preferably, the first clip, the palm member, the sliding member and the swing body are connected in sequence.

[0019] Due to the application of the above-mentioned technical scheme, the present invention has the following advantages compared with the prior art: the clamping device of the present invention can be opened and closed on one side, and the opening and closing roller is arranged to drive the driving member to rotate under the action of the opening and closing cam, so that the second clamp can be pre-opened before clamping, which can effectively avoid being damaged by the part to be clamped during taking and placing; the driving member drives the second clamp to rotate through the connecting rod, and when in the clamping position, the extension line of the connecting rod intersects the third axis perpendicularly, so that the connecting rod can be in a self-locking state, so that the second clamp can be locked relative to the first clamp, effectively improving the problem of accidental falling of the part to be clamped during the transmission process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Attached Figure 1 It is a structural schematic diagram of a clamping device that can be opened and closed on one side according to a specific embodiment of the present invention;

[0021] Attached Figure 2 A schematic structural diagram of the first clamping piece and the second clamping piece in the clamping position;

[0022] Attached Figure 3 It is a simplified structural diagram of the first clamp and the second clamp in the open position.

[0023] Among them: 1. second axis; 2. palm piece; 21. limit hole; 211. second limit end; 3. first clip; 4. second clip; 41. second connecting shaft; 5. third axis; 6. driving piece; 61. third connecting shaft; 7. fourth axis; 8. opening and closing roller; 9. opening and closing cam; 10. connecting rod; 11. elastic piece; 12. first connecting shaft; 13. rotating assembly; 131. rotating piece; 132. swinging piece; 1321. sliding piece; 14. fifth axis; 15. sixth axis; 16. swinging roller; 17. swinging cam; 18. telescopic roller; 19. telescopic cam; 20. seventh axis. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is further described below in conjunction with specific embodiments and drawings.

[0025] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0026] In the description of the embodiments of the present invention, it should be understood that the terms "length", "inside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of 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 operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0029] In the embodiments of the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] The disclosure below provides many different embodiments or examples to implement different structures of the embodiments of the present invention. In order to simplify the disclosure of the embodiments of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present invention. In addition, the embodiments of the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0031] See also Figure 1 As shown, this embodiment provides a clamping device that can be opened and closed on one side, including a frame (not shown in the figure), a rotating component 13 rotatably arranged on the frame around a first axis (not shown in the figure, the first axis is located on the right side of the rotating component 13 in this embodiment), a palm piece 2 connected to the rotating component 13, a first clip 3 fixedly connected to the palm piece 2, and a second clip 4 rotatably connected to the palm piece 2 around a second axis 1, the second clip 4 is used to rotate and cooperate with the first clip 3 to open and close.

[0032] The first clamp 3, the palm member 2 and the rotating assembly 13 are connected in sequence from left to right. The first axis and the second axis 1 are parallel to each other and are arranged along Figure 1 Extends in the direction perpendicular to the paper plane.

[0033] The above-mentioned clamping device that can be opened and closed on one side also includes a driving member 6 connected to the palm member 2 and can rotate around a third axis 5, an opening and closing roller 8 connected to the driving member 6 and can rotate around a fourth axis 7, and an opening and closing cam 9 arranged on the frame and used to drive the driving member 6 to rotate around the third axis 5 through the opening and closing roller 8. The fourth axis 7 is the axis of the opening and closing roller 8.

[0034] The third axis 5 and the fourth axis 7 are parallel to each other and extend along Figure 1 When the rotating assembly 13 rotates around the first axis with the palm, the opening and closing roller 8 drives the driving member 6 to rotate around the third axis 5 under the drive of the opening and closing cam 9.

[0035] The above-mentioned clamping device capable of opening and closing on one side further comprises a connecting rod 10 whose two ends are rotatably connected to the driving member 6 and the second clamping piece 4 respectively, and an elastic member 11 whose two ends are respectively connected to the driving member 6 and the second clamping piece 4.

[0036] In this embodiment, the driving member 6 and the connecting rod 10 are connected in rotation via the first connecting shaft 12. With this arrangement, when the driving member 6 rotates around the third axis 5, the connecting rod 10 can drive the second clamping piece 4 to rotate around the second axis 1, so that the second clamping piece 4 can be opened or closed relative to the first clamping piece 3. By setting the curved shape of the opening and closing cam 9, the second clamping piece 4 can be opened in advance before clamping, which can effectively avoid being damaged by the clamped piece when taking and placing; the second clamping piece 4 can also be rotated and closed after the clamped piece enters, so as to cooperate with the first clamping piece 3 to clamp the clamped piece.

[0037] The second clip 4 has a clamping position and an opening position relative to the first clip 3. When the second clip 4 is in the clamping position, the extension line of the axis of the connecting rod 10 intersects the third axis 5 perpendicularly, and the elastic member 11 can also be used to provide an elastic restoring force for driving the driving member 6 to rotate and reset. When the driving member 6 drives the second clip 4 to rotate from the clamping position to the opening position, the elastic member 11 is stretched; the elastic member 11 can be used to drive the driving member 6 to rotate and reset, so as to drive the second clip 4 to rotate to the clamping position through the driving member 6.

[0038] The driving member 6 drives the second clamp 4 to rotate through the connecting rod 10. When in the clamping position, the extension line of the connecting rod 10 intersects the third axis line 5 vertically, so that the connecting rod 10 can be in a self-locking state, so that the second clamp 4 can be locked relative to the first clamp 3, effectively improving the problem of accidental falling of the clamped part during the transmission process.

[0039] See also Figure 1 As shown, the second clip 4 is provided with a second connecting shaft 41 penetrating the palm member 2, and the axis of the second connecting shaft 41 is the second axis 1. One end of the elastic member 11 is connected to the second connecting shaft 41; when the second clip 4 is switched from the clamping position to the open position, the other end of the elastic member 11 rotates around the third axis 5 away from the second connecting shaft 41.

[0040] In this embodiment, the driving member 6 is provided with a third connecting shaft 61 for connecting the other end of the elastic member 11, the third connecting shaft 61 and the first clamping piece 3 are located on one side of the clamping center, and the second clamping piece 4 is located on the other side of the clamping center. Through this arrangement, in the natural state, the elastic member 11 is also used to make the second clamping piece 4 in a clamping state relative to the first clamping piece 3.

[0041] The palm member 2 is provided with a limiter for limiting the first connecting shaft 12, and the limiter has a first limiter end for limiting the first connecting shaft 12 in the clamping position and a second limiter end 211 for limiting the first connecting shaft 12 in the open position. When the first connecting shaft 12 abuts against the first limiter end, the extension line of the axis of the connecting rod 10 intersects the third axis 5 perpendicularly; when the first connecting shaft 12 abuts against the second limiter end 211, the angle of the second clip 4 relative to the first clip 3 is the largest.

[0042] See also Figure 1 As shown, the second clamping piece 4 is in a clamping position relative to the first clamping piece 3. The driving member 6 is arranged on the upper side of the palm member 2, and the second clamping piece 4 is arranged on the lower side of the palm member 2. The above-mentioned limiting member is a limiting hole 21 opened on the palm member 2, and the first connecting shaft 12 is passed through the limiting hole 21. The left end of the limiting hole 21 is the first limiting end, and the right end of the limiting hole 21 is the second limiting end 211.

[0043] In this embodiment, the limiting hole 21 is arc-shaped, and the radius of the limiting hole 21 is the rotation radius of the first connecting shaft 12 around the third axis 5. Through this setting, the limiting hole 21 also guides the rotation of the first connecting shaft 12 around the third axis 5.

[0044] The rotating assembly 13 includes a rotating member 131 rotatably arranged on the frame around a first axis, and a swinging member 132 swingably connected to the rotating member 131 around a fifth axis 14. The clamping device capable of opening and closing on one side also includes a swinging roller 16 rotatably connected to the rotating member 131 around a sixth axis 15 and connected to the swinging member 132, and a swinging cam 17 arranged on the frame and used to drive the swinging member 132 to swing around the fifth axis 14 through the swinging roller 16.

[0045] The fifth axis 14 and the sixth axis 15 are parallel to each other and extend along Figure 1 When the rotating assembly 13 rotates around the first axis with the palm, the swing roller 16 drives the swing member 132 to swing around the fifth axis 14 under the drive of the swing cam 17. Through this arrangement, the first clamping piece 3 and the second clamping piece 4 can be swung according to the position of the clamped object before clamping, so that the clamping opening between the two is aligned with the clamped object, thereby improving the accuracy and precision of clamping.

[0046] Specifically, the swing roller 16 and the swing member 132 may be meshed with each other through circular gears to achieve transmission therebetween.

[0047] In another embodiment, the palm member 2 is directly connected to the swing member 132 .

[0048] In this embodiment, the swing member 132 includes a swing body connected to the swing roller 16, and a sliding member 1321 slidably arranged on the swing body along the direction in which the swing roller 16 extends. The clamping device capable of opening and closing on one side also includes a telescopic roller 18 rotatably connected to the sliding member 1321 around the seventh axis 20, and a telescopic cam 19 arranged on the frame and used to drive the sliding member 1321 to slide along the direction in which the sliding member 1321 extends through the telescopic roller 18. The palm member 2 is connected to the sliding member 1321. In this embodiment, there are two sets of telescopic cams 19, which are respectively located on the left and right sides of the telescopic roller 18 and are used to clamp the telescopic roller 18.

[0049] Among them, the seventh axis 20 is along Figure 1 When the rotating assembly 13 rotates around the first axis with the palm member 2, the telescopic roller 18 drives the sliding member 1321 to move along the direction of its own length extension under the drive of the telescopic cam 19. Through this arrangement, the sliding member 1321 can be driven to approach the clamped member according to the position of the clamped member before clamping, so that the first clamping piece 3 and the second clamping piece 4 are forwardly enclosed on both sides of the clamped member to facilitate clamping.

[0050] See also Figure 1 As shown, the first clamping piece 3 (the second clamping piece 4), the palm piece 2, the sliding piece 1321 and the swinging body are connected in sequence from left to right.

[0051] The working process of this embodiment is described in detail below:

[0052] See also Figure 2 As shown, the second clamping piece 4 is in a clamping position relative to the first clamping piece 3, the rotating assembly 13 rotates positively around the first axis as a whole, the opening and closing cam 9 drives the driving member 6 to rotate clockwise around the third axis 5 through the opening and closing roller 8, and the driving member 6 pulls the second clamping piece 4 to rotate clockwise around the second axis 1 through the connecting rod 10, so that the second clamping piece 4 opens relative to the first clamping piece 3, and the elastic member 11 is stretched;

[0053] See also Figure 3 As shown, the second clip 4 is in the open position relative to the first clip 3, the rotating assembly 13 rotates in the opposite direction around the first axis as a whole, the opening and closing cam 9 drives the driving member 6 to rotate counterclockwise around the third axis 5 through the opening and closing roller 8, and the driving member 6 pushes the second clip 4 to rotate counterclockwise around the second axis 1 through the connecting rod 10 to reset, so that the second clip 4 is closed relative to the first clip 3. In this step, the elastic member 11 can also provide an elastic restoring force to drive the driving member 6 to rotate and reset, so as to ensure that the second clip 4 can be reset to the clamping position.

[0054] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A clamping device capable of opening and closing on one side, comprising a frame and a rotating assembly rotatably arranged on the frame around a first axis, characterized in that: The clamping device also includes a palm piece connected to the rotating assembly, a first clamp connected to the palm piece, and a second clamp connected to the palm piece and rotatable around a second axis, wherein the second clamp is used to rotate and cooperate with the first clamp to open and close; The clamping device also includes a driving member rotatably connected to the palm member around a third axis, a connecting rod rotatably connected to the driving member and the second clamp at both ends, an opening and closing roller rotatably connected to the driving member around a fourth axis, and an opening and closing cam provided on the frame and used to drive the driving member to rotate around the third axis through the opening and closing roller; The second clamp has a clamping position and an open position. When the second clamp is in the clamping position, an extension line of the connecting rod intersects the third axis perpendicularly. The driving member and the connecting rod are rotatably connected via a first connecting shaft, and a limiting member for limiting the first connecting shaft is provided on the palm member, and the limiting member has a first limiting end for limiting the first connecting shaft at the clamping position and a second limiting end for limiting the first connecting shaft at the open position; The clamping device also includes an elastic member whose two ends are respectively connected to the driving member and the second clamp; the second clamp is provided with a second connecting shaft passing through the palm member, the axis of the second connecting shaft is the second axis, and one end of the elastic member is connected to the second connecting shaft; when the second clamp is switched from the clamping position to the open position, the other end of the elastic member rotates around the third axis away from the second connecting shaft, and the elastic member is used to provide an elastic restoring force to drive the driving member to rotate and reset.

2. The clamping device capable of opening and closing on one side according to claim 1, characterized in that: The driving member and the second clamp are respectively arranged on both sides of the palm member, the limiting member is a limiting hole opened on the palm member, and the first connecting shaft is passed through the limiting hole; the two ends of the limiting hole are respectively the first limiting end and the second limiting end.

3. The one-side opening and closing clamping device according to claim 2 is characterized in that: The limiting hole is arc-shaped, and the radius of the limiting hole is the rotation radius of the first connecting shaft around the third axis.

4. The clamping device capable of opening and closing on one side according to claim 1, characterized in that: The first axis, the second axis and the third axis are parallel to each other.

5. The clamping device capable of opening and closing on one side according to claim 1, characterized in that: The driving member is provided with a third connecting shaft for connecting the other end of the elastic member, the third connecting shaft and the first clamp are located on one side of the clamping center, and the second clamp is located on the other side of the clamping center.

6. The clamping device capable of opening and closing on one side according to claim 1, characterized in that: The rotating assembly includes a rotating part rotatably arranged on the frame around the first axis, and a swinging part connected to the rotating part and swingable around the fifth axis; the clamping device also includes a swinging roller rotatably connected to the rotating part around the sixth axis and connected to the swinging part, and a swinging cam arranged on the frame and used to drive the swinging part to swing around the fifth axis through the swinging roller; the palm part is connected to the swinging part.

7. The one-side opening and closing clamping device according to claim 6, characterized in that: The swinging member includes a swinging body connected to the swinging roller, and a sliding member slidably arranged on the swinging body along the direction of its own length extension; the clamping device also includes a telescopic roller connected to the sliding member and rotatable around a seventh axis, and a telescopic cam arranged on the frame and used to drive the sliding member to slide along the direction of its own length extension through the telescopic roller; the palm member is connected to the sliding member.

8. The one-side opening and closing clamping device according to claim 7, characterized in that: The first clip, the palm piece, the sliding piece and the swing body are connected in sequence.

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