Clamp and tunnel furnace transportation clamp assembly

Abstract

The utility model discloses a fixture and tunnel furnace transportation fixture assembly, which belongs to the fixture field, and comprises a mounting rack, a first connecting rod, a chuck assembly and an elastic piece, the first connecting rod is hinged on the mounting rack, the first connecting rod is provided with a rotating end capable of rotating around the rotating center of the first connecting rod, the chuck assembly comprises a first chuck and a second chuck, the first clamping head comprises a first soft clamping part used for clamping a workpiece, the second clamping head comprises a second soft clamping part used for clamping the workpiece, the first clamping head is installed on the installation frame, the second clamping head is connected to the rotating end of the first connecting rod, and the elastic piece is connected with the installation frame and the first connecting rod. The elastic piece is used for driving the rotating end of the first connecting rod to approach the first chuck to enable the second clamping part to approach the first clamping part, and the first connecting rod can overcome the elastic force of the elastic piece under external force to drive the second clamping part to be far away from the first clamping part. According to the utility model, the first clamping part and the second clamping part are soft, so that the copper surface at the edge of the substrate is not easy to be damaged by clamping.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a clamp and a tunnel furnace transport clamp assembly. Background Art

[0002] In the packaging substrate manufacturing industry, vertical roller coating is widely used for substrate surface treatment. Liquid ink is applied to the substrate surface to form a solder mask layer. Due to the process characteristics of liquid ink coating, the board needs to be transported vertically through a specific fixture (oven transport clamp) and passed through a pre-baking oven to cure the ink. Due to the process characteristics of the pre-roller coating process (solder mask pre-treatment), the copper surface of the substrate is fragile and easily damaged. The existing transport fixture can easily cause damage to the copper surface at the edge of the substrate. Copper slag remains in the gap between the jaws of the transport fixture. During the opening and closing of the jaws of the transport fixture, the copper slag can easily fall into the ink on the board surface, causing copper slag defects in the product's solder mask. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a fixture and tunnel furnace transport fixture assembly that solves the problem that existing transport fixtures easily cause damage to the copper surface at the edge of the substrate, copper slag remains in the gap between the jaws of the transport fixture, and copper slag easily falls into the ink on the board surface during the opening and closing of the jaws of the transport fixture, thereby causing copper slag defects in the product solder mask.

[0004] A clamp according to an embodiment of the present invention includes:

[0005] Mounting rack;

[0006] a first connecting rod, the first connecting rod being hinged to the mounting frame, the first connecting rod having a rotating end rotatable about a rotation center of the first connecting rod;

[0007] A chuck assembly includes a first chuck and a second chuck, wherein the first chuck includes a first soft clamping portion for clamping a workpiece, and the second chuck includes a second soft clamping portion for clamping a workpiece, the first chuck is mounted on the mounting frame, and the second chuck is connected to the rotating end of the first connecting rod;

[0008] An elastic member connects the mounting frame and the first connecting rod, the elastic member is used to drive the rotating end of the first connecting rod close to the first clamping head so that the second clamping part is close to the first clamping part, and the first connecting rod is configured to be able to overcome the elastic force of the elastic member by an external force to drive the second clamping part away from the first clamping part.

[0009] A clamp according to an embodiment of the present invention has at least the following beneficial effects:

[0010] In the initial state, the elastic member drives the rotating end of the first connecting rod to approach the first clamping head, and the second clamping part to approach the first clamping part. The first connecting rod is subjected to external force to overcome the elastic force of the elastic member, so that the first clamping part is away from the second clamping part, and the workpiece can be extended between the first clamping part and the second clamping part. When the external force is removed, the elastic member drives the rotating end of the first connecting rod to approach the first clamping head, and the first clamping part and the second clamping part clamp the workpiece. Since the first clamping part and the second clamping part are soft, it is not easy to cause clamping damage to the copper surface at the edge of the substrate, and copper slag is not easy to remain between the first clamping part and the second clamping part, which can reduce the risk of copper slag falling into the ink on the board surface and the risk of copper slag defects in the product solder mask.

[0011] According to some embodiments of the present invention, a slideway is provided on the mounting frame, a sliding member is connected to the second clamp, and the sliding member is slidably arranged in the slideway.

[0012] According to some embodiments of the present invention, a guide plate is provided on the mounting frame, and the second clamp is slidably connected to the guide plate.

[0013] According to some embodiments of the present invention, a second connecting rod is further included, and the two ends of the second connecting rod are respectively hinged to the rotating end of the first connecting rod and the second chuck, the slide is a long slot hole, the length direction of the slide is perpendicular to the insertion direction of the workpiece, and the moving direction of the second chuck is perpendicular to the insertion direction of the workpiece.

[0014] According to some embodiments of the present invention, the first chuck includes a first body portion, and the second chuck includes a second body portion. The first body portion and the first clamping portion are integrally formed or detachably arranged, and the second body portion and the second clamping portion are integrally formed or detachably arranged.

[0015] According to some embodiments of the present invention, a first guide portion connected to the first clamping portion is provided on the first chuck, and a second guide portion connected to the second clamping portion is provided on the second chuck. The first guide portion and the second guide portion are used to guide the workpiece into between the first clamping portion and the second clamping portion, and the distance between the first guide portion and the second guide portion gradually increases along the insertion direction away from the workpiece.

[0016] According to some embodiments of the present invention, the middle portion of the first connecting rod is hinged to the mounting bracket, and the other end of the first connecting rod is used to be subjected to an external force to overcome the elastic force of the elastic member to drive the second clamp away from the first clamp;

[0017] Alternatively, the other end of the first connecting rod is hinged on the mounting bracket, and the middle portion of the first connecting rod is used to be subjected to external force to overcome the elastic force of the elastic member to drive the second clamp away from the first clamp.

[0018] According to some embodiments of the present invention, the mounting frame is provided with an avoidance gap for the workpiece to extend into, and the first chuck and the second chuck are respectively located on both sides of the avoidance gap.

[0019] According to some embodiments of the present invention, the mounting frame includes a first fixing plate, a second fixing plate and a plurality of connecting members, the first fixing plate and the second fixing plate are arranged at intervals, the first fixing plate and the second fixing plate are connected by the connecting members, and the clamp assembly is arranged between the first fixing plate and the second fixing plate.

[0020] A tunnel furnace transport fixture assembly according to an embodiment of the present invention includes:

[0021] Fixed rod;

[0022] The clamp according to any one of claims 1 to 4, wherein the clamp is mounted on the fixing rod;

[0023] A driving assembly is installed on one side of the fixing rod, and is used for applying an external force to the first connecting rod to overcome the elastic force of the elastic member so as to drive the second clamping portion away from the first clamping portion.

[0024] A tunnel furnace transport fixture assembly according to an embodiment of the present invention has at least the following beneficial effects:

[0025] In the initial state, the elastic member drives the rotating end of the first connecting rod to approach the first clamping head, and the second clamping part to approach the first clamping part. The driving component applies an external force to the first connecting rod to overcome the elastic force of the elastic member, so that the first clamping part is away from the second clamping part, and the workpiece can be extended between the first clamping part and the second clamping part. When the external force is removed, the elastic member drives the rotating end of the first connecting rod to approach the first clamping head, and the first clamping part and the second clamping part clamp the workpiece. Since the first clamping part and the second clamping part are soft, it is not easy to cause clamping damage to the copper surface at the edge of the substrate, and copper slag is not easy to remain between the first clamping part and the second clamping part, which can reduce the risk of copper slag falling into the ink on the board surface and the risk of copper slag defects in the product solder mask.

[0026] Additional aspects and advantages of the present invention will be described in part in the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0028] Figure 1 This is a front view of the clamp according to an embodiment of the present utility model;

[0029] Figure 2 This is a front view of the mounting frame of the clamp according to an embodiment of the present invention;

[0030] Figure 3 This is a schematic structural diagram of the clamp of the embodiment of the utility model after removing the mounting frame;

[0031] Figure 4 This is a front view of the clamp of the embodiment of the utility model after removing the mounting frame;

[0032] Figure 5 This is a schematic diagram of a clamp according to an embodiment of the present invention clamping a workpiece;

[0033] Figure 6 This is a schematic diagram of a clamp according to an embodiment of the present invention in which the first body portion and the first clamping portion are detachably arranged, and the second body portion and the second clamping portion are detachably arranged;

[0034] Figure 7 This is a schematic structural diagram of a mounting frame of a clamp according to an embodiment of the present invention;

[0035] Figure 8 This is a schematic structural diagram of the tunnel furnace transport fixture assembly according to an embodiment of the present utility model.

[0036] Figure Number:

[0037] 100, mounting frame; 110, first fixing plate; 111, slideway; 112, avoidance hole; 120, second fixing plate; 130, connector; 140, guide plate; 150, avoidance notch; 151, first avoidance portion; 152, second avoidance portion;

[0038] 200, first connecting rod;

[0039] 300, chuck assembly; 310, first chuck; 311, first clamping portion; 312, first body portion; 313, first guide portion; 320, second chuck; 321, sliding member; 322, second clamping portion; 323, second body portion; 324, second guide portion;

[0040] 400, elastic member; 500, second connecting rod; 600, slider; 700, fixed rod; 800, driving assembly; 900, workpiece;

[0041] A. Workpiece insertion direction. DETAILED DESCRIPTION

[0042] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0044] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0045] See also Figure 1 、 Figure 2 and Figure 3 A clamp according to an embodiment of the present invention includes a mounting frame 100, a first connecting rod 200, a chuck assembly 300 and an elastic member 400. The first connecting rod 200 is hinged on the mounting frame 100, and the first connecting rod 200 has a rotating end, which can rotate around the rotation center of the first connecting rod 200. In the present application, the rotating end is the lower end of the first connecting rod 200. The chuck assembly 300 includes a first chuck 310 and a second chuck 320. The first chuck 310 includes a first clamping portion 311, and the first clamping portion 311 is used to clamp the workpiece 900, and the first clamping portion 311 is soft. The second chuck 320 includes a second clamping portion 322, and the second clamping portion 322 is used to clamp the workpiece 900, and the second clamping portion 322 is soft. The first chuck 310 is mounted on the mounting frame 100, and the second chuck 320 is connected to the rotating end of the first connecting rod 200. The elastic member 400 connects the mounting frame 100 and the first connecting rod 200. The elastic member 400 is used to drive the rotating end of the first connecting rod 200 close to the first clamping head 310, thereby making the second clamping portion 322 close to the first clamping portion 311. The first connecting rod 200 is configured to be able to overcome the elastic force of the elastic member 400 by external force, thereby driving the second clamping portion 322 away from the first clamping portion 311.

[0046] In the initial state, the elastic member 400 drives the rotating end of the first connecting rod 200 to approach the first clamping head 310, and the second clamping part 322 to approach the first clamping part 311. The first connecting rod 200 is subjected to external force to overcome the elastic force of the elastic member 400, so that the first clamping part 311 is away from the second clamping part 322, and the workpiece 900 can be extended between the first clamping part 311 and the second clamping part 322; when the external force is removed, the elastic member 400 drives the rotating end of the first connecting rod 200 to approach the first clamping head 310, and the first clamping part 311 and the second clamping part 322 clamp the workpiece 900. Since the first clamping part 311 and the second clamping part 322 are soft, it is not easy to cause clamping damage to the copper surface at the edge of the substrate, and copper slag is not easy to remain between the first clamping part 311 and the second clamping part 322, which can reduce the risk of copper slag falling into the ink on the board surface and the risk of copper slag defects in the product solder mask.

[0047] In some embodiments, see Figure 1 、 Figure 2 and Figure 3 The mounting frame 100 is provided with a slideway 111. A sliding member 321 is connected to the second chuck 320 and slides through the slideway 111. The second chuck 320 is connected to a slider 600, which connects the second chuck 320 to the first connecting rod 200 via the slider 321. The slider 321 can be a connecting bolt that connects the second chuck 320 and the slider 600 and slides through the slideway 111. The slideway 111 can limit the movement of the second chuck 320, ensuring that the second chuck 320 and the first clamping member can more firmly clamp the workpiece 900.

[0048] In some embodiments, see Figure 1 and Figure 7 A guide plate 140 is provided on the mounting frame 100, and the second clamping head 320 is slidably connected to the guide plate 140. The guide plate 140 can support the second clamping head 320, and the guide plate 140 can also assist in guiding to ensure that the second clamping head 320 moves smoothly.

[0049] In some embodiments, see Figure 1 、 Figure 4 and Figure 5The fixture further includes a second connecting rod 500, the two ends of which are hinged to the rotating end of the first connecting rod 200 and the second chuck 320 respectively. The slide 111 is a long slot, the length direction of the slide 111 is perpendicular to the workpiece insertion direction A, and the moving direction of the second chuck 320 is perpendicular to the workpiece insertion direction A. The second connecting rod 500 and the slide 111 are provided to limit the moving direction of the second chuck 320 to be perpendicular to the workpiece insertion direction A, which can ensure that the contact area between the second clamping part 322 and the workpiece 900 is maximized. The direction of the pressure applied by the second clamping part 322 to the surface of the workpiece 900 is consistent with the moving direction of the second chuck 320, and the surface of the workpiece 900 is evenly stressed, which makes it less likely to cause damage to the surface of the workpiece 900.

[0050] In some embodiments, see Figure 4 The first chuck 310 includes a first body portion 312, and the second chuck 320 includes a second body portion 323. The first body portion 312 and the first clamping portion 311 are integrally formed, which is convenient for processing. The second body portion 323 and the second clamping portion 322 are integrally formed, which is convenient for processing. The first chuck 310 can be soft as a whole, or the first body portion 312 is hard and the first clamping portion 311 is soft. The second chuck 320 can be soft as a whole, or the second body portion 323 is hard and the second clamping portion 322 is soft. Ensure that the first clamping portion 311 and the second clamping portion 322 are soft, so as not to easily cause clamping damage to the surface of the workpiece 900.

[0051] See Figure 6 The first body portion 312 and the first clamping portion 311 can also be detachable, and the second body portion 323 and the second clamping portion 322 can also be detachable. A soft cushion layer is attached to the first body portion 312 to form the first clamping portion 311, and a soft cushion layer is attached to the second body portion 323 to form the second clamping portion 322, which is easy to process and replace.

[0052] In some embodiments, see Figure 3 、 Figure 4 and Figure 5The first chuck 310 is provided with a first guide portion 313, which is connected to the first clamping portion 311. The second chuck 320 is provided with a second guide portion 324, which is connected to the second clamping portion 322. The first guide portion 313 is provided at the lower end of the first clamping portion 311, and the second guide portion 324 is provided at the lower end of the second clamping portion 322. The first guide portion 313 and the second guide portion 324 are used to guide the workpiece 900 into between the first clamping portion 311 and the second clamping portion 322. The distance between the first guide portion 313 and the second guide portion 324 gradually increases along the insertion direction A away from the workpiece. The first guide portion 313 is inclined to the first clamping portion 311, and the second guide portion 324 is inclined to the second clamping portion 322. During the process of inserting the workpiece 900 between the first clamping portion 311 and the second clamping portion 322, when the workpiece 900 touches the first guide portion 313 or the second guide portion 324, it can slide along the inclined first guide portion 313 and the second guide portion 324 into between the first clamping portion 311 and the second clamping portion 322.

[0053] In some embodiments, see Figure 1 、 Figure 3 and Figure 4 The middle part of the first connecting rod 200 is hinged on the mounting frame 100, and the other end of the first connecting rod 200 (the end away from the rotating end) is used to withstand external force to overcome the elastic force of the elastic member 400 to drive the second clamp 320 away from the first clamp 310. The other end of the first connecting rod 200 extends out of the mounting frame 100, which is convenient for applying external force to the protruding end of the first connecting rod 200. The elastic member 400 is a spring, and a avoidance hole 112 is provided on the mounting frame 100 corresponding to the position of the spring. One end of the spring is connected to the mounting frame 100 near the first clamp 310, and the other end is connected between the rotating middle and the rotating end of the first connecting rod 200. The spring pulls the first connecting rod 200, driving the rotating end toward the first clamp 310. The overall structure is relatively compact and easy to disassemble and assemble.

[0054] The spring may also be installed on the side of the first connecting rod 200 away from the first clamping head 310 , and the spring pushes the first connecting rod 200 so that the rotating end of the first connecting rod 200 is close to the first clamping head 310 .

[0055] A spring may also be installed at the other end of the first connecting rod 200 . The spring pushes the other end of the first connecting rod 200 , driving the rotating end of the first connecting rod 200 to approach the first clamp 310 .

[0056] In some embodiments, see Figure 1 、 Figure 3 and Figure 4The other end of the first connecting rod 200 (the end away from the rotating end) is hinged on the mounting frame 100, and the middle part of the first connecting rod 200 is used to withstand external force to overcome the elastic force of the elastic member 400 to drive the second clamp 320 away from the first clamp 310.

[0057] In some embodiments, see Figure 2 and Figure 7 The mounting frame 100 is provided with an escape notch 150 for inserting the workpiece 900. The first chuck 310 and the second chuck 320 are respectively located on either side of the escape notch 150. The mounting frame 100 is also provided with a first escape portion 151 and a second escape portion 152, which are respectively connected to the two inner walls of the escape notch 150. The distance between the first escape portion 151 and the second escape portion 152 gradually increases along the insertion direction A away from the workpiece. The escape notch 150, the first escape portion 151 and the second escape portion 152 ensure that the workpiece 900 is not likely to collide with the mounting frame 100 when the chuck assembly 300 is clamping the workpiece 900.

[0058] In some embodiments, see Figure 1 、 Figure 2 and Figure 7 The mounting frame 100 includes a first fixing plate 110, a second fixing plate 120, and a plurality of connecting members 130, each of which is a connecting column. The first fixing plate 110 and the second fixing plate 120 are spaced apart and connected by the connecting members 130. The clamp assembly 300 is disposed between the first fixing plate 110 and the second fixing plate 120. The second clamp 320 can move between the first fixing plate 110 and the second fixing plate, and the movement of the second clamp 320 is more stable. The internal components of the mounting frame 100 include the first clamp 310, the second clamp 320, the slider 600, the guide plate 140, the connecting member 130, the second connecting rod 500, the elastic member 400, and a portion of the first connecting rod 200. The first fixing plate 110 and the second fixing plate 120 can protect the internal components of the mounting frame 100 and provide positioning points for the internal components.

[0059] See Figure 1 、 Figure 3 and Figure 8 According to an embodiment of the present invention, a tunnel furnace transport fixture assembly includes a fixed rod 700, a fixture, and a drive assembly 800. The fixture is mounted on the fixed rod 700, and the drive assembly 800 is mounted on one side of the fixed rod 700. The drive assembly 800 can be a rotary cylinder that applies an external force to the first connecting rod 200 that overcomes the elastic force of the elastic member 400, thereby driving the second clamping portion 322 away from the first clamping portion 311.

[0060] In the initial state, the elastic member 400 drives the rotating end of the first connecting rod 200 to approach the first clamping head 310, and the second clamping part 322 to approach the first clamping part 311. The driving component 800 applies an external force to the first connecting rod 200 to overcome the elastic force of the elastic member 400, so that the first clamping part 311 is away from the second clamping part 322, and the workpiece 900 can be extended between the first clamping part 311 and the second clamping part 322. When the external force is removed, the elastic member 400 drives the rotating end of the first connecting rod 200 to approach the first clamping head 310, and the first clamping part 311 and the second clamping part 322 clamp the workpiece 900. Since the first clamping part 311 and the second clamping part 322 are soft, it is not easy to cause clamping damage to the copper surface at the edge of the substrate, and copper slag is not easy to remain between the first clamping part 311 and the second clamping part 322, which can reduce the risk of copper slag falling into the ink on the board surface and the risk of copper slag defects in the product solder mask.

[0061] Working principle of the clamp in the embodiment of the present application:

[0062] After the workpiece 900 is coated by the previous step (solder mask roller coating and feeding), the workpiece 900 is transferred from the coating handover position to the upper plate position of the SR ink pre-bake oven feeding port by the transfer arm. At this time, the rotary cylinder (drive component 800) above the upper plate position of the feeding port is actuated to push the first connecting rod 200 on the clamp, driving the rotating end of the first connecting rod 200 away from the first chuck 310, thereby opening the clamp. At the same time, the transfer arm delivers the workpiece 900 to the clamp. The rotary cylinder (drive component 800) above the upper plate position of the feeding port is actuated to release the first connecting rod 200 on the clamp. The elastic member 400 pulls the first connecting rod 200, driving the rotating end of the first connecting rod 200 close to the first chuck 310. The first chuck 310 and the second chuck 320 clamp the workpiece 900. The transfer arm returns to the coating handover position, thus completing the tunnel furnace loading. Next, the oven conveyor (transmission mechanism) is started, and the workpiece 900 is clamped by the clamp and follows the transmission mechanism through the vertical tunnel oven to the discharge port for unloading (the drive component 800 at the discharge port applies external force to the first connecting rod 200 of the clamp, driving the rotating end of the first connecting rod 200 away from the first clamp 310, realizing the clamp opening, and the transfer arm moves the workpiece 900 away), completing the ink curing.

[0063] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0064] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A clamp, characterized in that: include: Mounting rack; a first connecting rod, the first connecting rod being hinged to the mounting frame, the first connecting rod having a rotating end rotatable about a rotation center of the first connecting rod; A chuck assembly includes a first chuck and a second chuck, wherein the first chuck includes a first soft clamping portion for clamping a workpiece, and the second chuck includes a second soft clamping portion for clamping a workpiece, the first chuck is mounted on the mounting frame, and the second chuck is connected to the rotating end of the first connecting rod; An elastic member connects the mounting frame and the first connecting rod, the elastic member is used to drive the rotating end of the first connecting rod close to the first clamping head so that the second clamping part is close to the first clamping part, and the first connecting rod is configured to be able to overcome the elastic force of the elastic member by an external force to drive the second clamping part away from the first clamping part.

2. A clamp according to claim 1, characterized in that: The mounting frame is provided with a slideway, the second clamp is connected with a sliding member, and the sliding member is slidably arranged in the slideway.

3. A clamp according to claim 1, characterized in that: A guide plate is provided on the mounting frame, and the second clamp is slidably connected to the guide plate.

4. A clamp according to claim 2, characterized in that: It also includes a second connecting rod, the two ends of which are respectively hinged to the rotating end of the first connecting rod and the second chuck, the slide is a long slot hole, the length direction of the slide is perpendicular to the insertion direction of the workpiece, and the moving direction of the second chuck is perpendicular to the insertion direction of the workpiece.

5. The clamp according to claim 1, characterized in that: The first chuck includes a first body portion, and the second chuck includes a second body portion. The first body portion and the first clamping portion are integrally formed or detachably provided, and the second body portion and the second clamping portion are integrally formed or detachably provided.

6. The clamp according to claim 1, characterized in that: A first guide portion connected to the first clamping portion is provided on the first chuck, and a second guide portion connected to the second clamping portion is provided on the second chuck. The first guide portion and the second guide portion are used to guide the workpiece into between the first clamping portion and the second clamping portion, and the distance between the first guide portion and the second guide portion gradually increases along the insertion direction away from the workpiece.

7. The clamp according to claim 1, characterized in that: The middle portion of the first connecting rod is hinged on the mounting frame, and the other end of the first connecting rod is used to overcome the elastic force of the elastic member by an external force to drive the second clamp away from the first clamp; Alternatively, the other end of the first connecting rod is hinged on the mounting bracket, and the middle portion of the first connecting rod is used to be subjected to external force to overcome the elastic force of the elastic member to drive the second clamp away from the first clamp.

8. The clamp according to claim 1, characterized in that: The mounting frame is provided with an avoidance gap for the workpiece to extend into, and the first chuck and the second chuck are respectively located on both sides of the avoidance gap.

9. The clamp according to claim 1, characterized in that: The mounting frame includes a first fixing plate, a second fixing plate and a plurality of connecting members. The first fixing plate and the second fixing plate are arranged at intervals. The first fixing plate and the second fixing plate are connected by the connecting members. The clamp assembly is arranged between the first fixing plate and the second fixing plate.

10. A tunnel furnace transport fixture assembly, characterized in that: include: Fixed rod; The clamp according to any one of claims 1 to 9, wherein the clamp is mounted on the fixing rod; A driving assembly is installed on one side of the fixing rod, and is used for applying an external force to the first connecting rod to overcome the elastic force of the elastic member so as to drive the second clamping portion away from the first clamping portion.

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