Jig assembly and open and short circuit test equipment

Abstract

The utility model discloses a jig assembly and an open-short circuit test device. The jig assembly comprises a jig body, a conductive part and a fixing module, the jig body is provided with a placing position, the placing position is used for placing a to-be-tested part, and the to-be-tested part comprises a flat cable and a component which are connected; the conductive piece is movably connected to the jig body, and the conductive piece is used for leading out signals of the components to the main adapter plate; the fixing module is connected with the jig body, and the fixing module is used for fixing the to-be-tested piece on the placing position. The open and short circuit test equipment comprises the jig assembly. The jig assembly can be used for the open and short circuit test of a product formed by the connection of a component and a flat cable. The utility model is applied to the technical field of open-short circuit testing.

Description

Technical Field

[0001] The present application relates to the technical field of open-short circuit testing, and in particular to a fixture assembly and an open-short circuit testing device. Background Art

[0002] Flexible Printed Circuit Board (FPCB) is a highly reliable flexible printed circuit board made of polyimide or polyester film. It has the characteristics of high wiring density, light weight, thin thickness and good bendability.

[0003] In the related art, on the one hand, when performing an open-short circuit test on an FPCB, either a probe is used to contact the reserved contact points on the FPCB cable to conduct the components, thereby performing an open-short circuit test on the FPCB cable; or the FPCB components (for example, the FPCB connector) are placed on a fixture to perform an open-short circuit test on the FPCB components. These methods are unable to perform open-short circuit tests on products formed by connecting components and cables. On the other hand, when performing an open-short circuit test on an FPCB, in order to prevent the FPCB from tilting, a pressure block is generally used to press and fix the FPCB. However, this can easily damage the FPCB, and the use of a pressure block is not conducive to fixing relatively slender or large FPCBs. Utility Model Content

[0004] The present application aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent. To this end, a first embodiment of the present application provides a fixture assembly that can be used for open and short circuit testing of products formed by connecting components and cables.

[0005] A second embodiment of the present application provides an open-short circuit testing device having the above-mentioned fixture assembly.

[0006] According to an embodiment of the first aspect of the present application, a fixture assembly includes: a fixture body, the fixture body being provided with a placement position, the placement position being used to place a piece to be tested, the piece to be tested including connected cables and components; a conductive member, the conductive member being movably connected to the fixture body, the conductive member being used to lead signals of the components to a main adapter board; and a fixing module, the fixing module being connected to the fixture body, the fixing module being used to fix the piece to be tested on the placement position.

[0007] Based on the above technical solution, the embodiments of the present application have at least the following beneficial effects: in the embodiments of the present application, the device to be tested can be fixed in the placement position through the fixing module, thereby preventing the device to be tested from shifting during the open-short circuit test, which is conducive to the implementation of the open-short circuit test; the signal of the component can be led out to the main adapter board through the conductive part, and the signal of the pin of the cable needs to be led out to the main adapter board to form a loop, and then the product formed by the connection of the component and the cable can be subjected to an open-short circuit test; the on-off of the loop can be controlled by moving the conductive part, thereby controlling the start and stop of the open-short circuit test.

[0008] According to the jig assembly of the embodiment of the first aspect of the present application, the placement position includes a first position, the first position is used to place the component, and the conductive member is arranged above the first position so as to be movable up and down.

[0009] According to the jig assembly of the embodiment of the first aspect of the present application, the fixing module includes a pressing piece, which is rotatably connected to the jig body, and the pressing piece is used to press the component in the first position.

[0010] According to the jig assembly of the embodiment of the first aspect of the present application, the pressing member is provided with a first magnetic member on the side facing the first position, and the jig body is correspondingly provided with a second magnetic member on the side facing the first magnetic member. The magnetic poles of the first magnetic member and the second magnetic member are opposite, and the first magnetic member is used to attract the second magnetic member.

[0011] According to the jig assembly of the embodiment of the first aspect of the present application, the jig assembly further includes an adapter, which is connected to the conductive member and is used to connect to the main adapter plate.

[0012] According to the jig assembly of the embodiment of the first aspect of the present application, the fixing module includes a vacuum adsorption assembly, which is arranged on a side of the jig body away from the placement position, and the vacuum adsorption assembly is used to adsorb the test piece.

[0013] According to the jig assembly of the first aspect embodiment of the present application, the vacuum adsorption assembly includes a vacuum generator, a vacuum filter and an adsorption structure, the adsorption structure is connected to the vacuum generator through the vacuum filter, the adsorption structure is connected to the jig body, and the adsorption structure is arranged with its back to the placement position.

[0014] According to the jig assembly of the embodiment of the first aspect of the present application, the jig assembly also includes a sensor, which is used to sense the test piece, the sensor is connected to the jig body, the sensor is electrically connected to the vacuum adsorption assembly, and the vacuum adsorption assembly opens and closes in response to the sensor.

[0015] According to the fixture assembly of the embodiment of the first aspect of the present application, the sensor is a fiber optic sensor.

[0016] The open-short circuit testing equipment according to the second embodiment of the present application includes the above-mentioned fixture assembly.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present application is further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1 This is a schematic structural diagram of a fixture assembly in an embodiment of the present application;

[0020] Figure 2 This is a schematic diagram of the structure of the plate in the embodiment of this application;

[0021] Figure 3 This is a schematic diagram of the structure of the test piece in the embodiment of the present application;

[0022] Figure 4 This is another structural schematic diagram of the fixture assembly in the embodiment of the present application;

[0023] Figure 5 This is a schematic structural diagram of an open-short circuit test device in an embodiment of the present application;

[0024] Figure 6 This is a structural diagram of the connection between the moving member (installed with a pressing module and a probe module) and the supporting member in an embodiment of the present application;

[0025] Figure 7 This is a schematic structural diagram of a test cabinet (without a top plate) in an embodiment of the present application.

[0026] Reference numerals:

[0027] Fixture assembly 100, fixture body 110, placement position 111, first position 1111, plate 112, groove 1121, first guide portion 1122, sink 113, conductive member 120, adapter 130, pressing member 141, first magnetic member 1411, vacuum generator 1421, vacuum filter 1422, adsorption structure 1423, sensor 150; test piece 200, cable 210, pin 211, component 220; pressing module 310 ; Probe module 410; Support part 510, moving part 520; Driving part 600; Test cabinet 700, top plate 710, first sub-side panel 721, second sub-side panel 722, third sub-side panel 723, fourth sub-side panel 724, bottom plate 730, anti-pinch finger 740, solenoid valve 750, pressure gauge 760, first handle 770, cooling fan 780, control button 790; Outer cover 800, opening 810, second handle 820; Safety light grid 900. DETAILED DESCRIPTION

[0028] This section will describe the specific embodiments of the present application in detail. The preferred embodiments of the present application are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present application, but it cannot be understood as a limitation on the scope of protection of the present application.

[0029] In the description of this application, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application 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 this application.

[0030] In the description of this application, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The terms "first" and "second" are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or as implicitly specifying the number or order of the technical features indicated.

[0031] In the description of this application, unless otherwise clearly defined, words such as setting and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meaning of the above words in this application based on the specific content of the technical solution.

[0032] The technical solution of the present application will be further described below with reference to the embodiments and drawings.

[0033] See also Figure 1In a first aspect of the present application, an embodiment provides a fixture assembly 100 that can be used for open and short circuit testing of a product formed by connecting a component 220 with a cable 210 .

[0034] See also Figure 1 and Figure 2 The fixture assembly 100 includes a fixture body 110, a conductive member 120 and a fixing module. The fixture body 110 is provided with a placement position 111, which is used to place the test piece 200. Figure 3 The test piece 200 includes a connected cable 210 and components 220; the conductive member 120 is movably connected to the fixture body 110, and the conductive member 120 is used to lead the signal of the component 220 to the main adapter board; the fixing module is connected to the fixture body 110, and the fixing module is used to fix the test piece 200 on the placement position 111.

[0035] In the embodiment of the present application, the device to be tested 200 can be fixed on the placement position 111 through the fixing module, thereby preventing the device to be tested 200 from shifting during the open-short circuit test, which is conducive to the performance of the open-short circuit test; the signal of the component 220 can be led out to the main adapter board through the conductive member 120, and the signal of the pin 211 of the cable 210 needs to be led out to the main adapter board to form a loop, and then the product formed by the connection between the component 220 and the cable 210 can be subjected to an open-short circuit test; by moving the conductive member 120, the on-off of the loop can be controlled, thereby controlling the start and stop of the open-short circuit test.

[0036] It is understood that one or more placement positions 111 can be provided on the fixture body 110, each placement position 111 being capable of accommodating a test piece 200. The number of conductive members 120 and fixing modules can be the same as the number of placement positions 111, and the number of conductive members 120 and fixing modules can be one-to-one. In this way, a single fixture assembly 100 can be used to perform open and short circuit testing on one or more test pieces 200. For example, there are two placement positions 111, two conductive members 120, and two fixing modules, each corresponding to one another.

[0037] For example, see Figure 3 The cable 210 is a flexible FPCB cable. A pin 211 is provided at one end of the cable 210. The end of the cable 210 away from the pin 211 is connected to the FPCB component 220. Alternatively, the FPCB component 220 may be a connector. Exemplarily, the FPCB component 220 is a B2B connector. Of course, the FPCB component 220 may also be other components, and this is not a specific limitation.

[0038] Alternatively, in some embodiments, see Figure 2The placement position 111 includes a first position 1111 , and the first position 1111 is used to place the component 220 , and the conductive member 120 is arranged above the first position 1111 so as to be movable up and down.

[0039] For example, the fixture body 110 is provided with a plate 112, and the plate 112 is provided with a groove 1121. The bottom surface of the groove 1121 is the first position 1111. The conductive member 120 includes two floating needle blocks, which are respectively arranged on both sides of the first position 1111 and above the first position 1111 so as to be movable up and down. When the signal of the component 220 needs to be led out to the main adapter board, the two floating needle blocks can be pressed down so that the two floating needle blocks are connected to the component 220, thereby leading out the signal of the component 220. Optionally, see Figure 1 The fixture body 110 is provided with recessed grooves 113 around the placement position 111. For example, the fixture body 110 has multiple recessed grooves 113 spaced apart on both sides of the placement position 111 for the flat cable 210, and a recessed groove 113 is provided at one end near the pins 211 where the flat cable 210 is placed. It is understood that the recessed grooves 113 can be used as a handhold to facilitate the removal and placement of the flat cable 210.

[0040] Optionally, a movable moving member 520 can be provided, and a pressing module 310 is provided on the moving member 520. The pressing module 310 can be driven downward by moving the moving member 520 downward, so that the pressing module 310 can press down the floating needle block. Optionally, a first guide portion 1122 can be provided on the plate 112, and a second guide portion cooperating with the first guide portion can be provided on the moving member 520 to guide the pressing module 310 to press down the floating needle block to ensure the pressing accuracy. Optionally, the first guide portion 1122 can be a guide sleeve, and the second guide portion can be a guide column. Exemplarily, the plate 112 is provided with a guide sleeve on both sides of the first position 1111, and the moving member 520 can be provided with a guide column at the corresponding position.

[0041] It is understandable that the specific structure, specific setting position and specific setting quantity of the first guide part 1122 and the second guide part can be set according to actual needs and are not specifically limited here.

[0042] Alternatively, in some embodiments, see Figure 2 The fixing module includes a pressing member 141 , which is rotatably connected to the fixture body 110 , and is used to press the component 220 at the first position 1111 .

[0043] Exemplarily, the pressing piece 141 is a pressing block, one end of which is rotatably connected to the plate 112 via a rotating shaft. By rotating the pressing block, the other end of the pressing block can be located between the two floating needle blocks, and the placed components 220 can be pressed to prevent the components 220 from shifting, so as to perform open and short circuit testing.

[0044] Optionally, in some embodiments, the pressing member 141 is provided with a first magnetic member 1411 on the side facing the first position 1111, and the fixture body 110 is correspondingly provided with a second magnetic member (not shown in the drawings) on the side facing the first magnetic member 1411. The magnetic poles of the first magnetic member 1411 and the second magnetic member are opposite, and the first magnetic member 1411 is used to attract the second magnetic member.

[0045] Exemplarily, the second magnetic part is arranged on the side of the plate 112 facing the first magnetic part 1411. The first magnetic part 1411 and the second magnetic part are both magnets, and the magnetic pole of the first magnetic part 1411 is positive, and the magnetic pole of the second magnetic part is negative. When the pressing member 141 presses the component 220, the first magnetic part 1411 and the second magnetic part are attracted to each other, thereby providing a clamping force so that the pressing member 141 can press the component 220, and can also play the role of fixing the pressing member 141 to prevent the pressing member 141 from shifting.

[0046] Optionally, in some embodiments, the fixture assembly 100 further includes an adapter 130, which is connected to the conductive member 120 and is used to connect to the main adapter board. For example, the adapter 130 is a PCB adapter board, see Figure 2 The adapter 130 is disposed below the first position 1111 , and the adapter 130 is connected to the plate 112 to fix the adapter 130 on the plate 112 .

[0047] Optionally, in some embodiments, the fixing module includes a vacuum adsorption assembly, which is positioned on a side of the fixture body 110 facing away from the placement position 111. The vacuum adsorption assembly is used to adsorb the test piece 200. Optionally, the placement position 111 is provided with adsorption holes to facilitate the vacuum adsorption assembly to adsorb the flat cable 210. The specific location and number of the adsorption holes can be set according to actual needs and are not specifically limited here.

[0048] By providing a vacuum adsorption assembly to adsorb the test piece 200, it is possible to prevent the use of a large-area pressure block to press the test piece 200, thereby preventing damage to the test piece 200. It is also beneficial for fixing a relatively slender or large test piece 200, and it is convenient to load and unload the test piece 200, which can improve testing efficiency.

[0049] It is understood that the number of vacuum adsorption components can be one or more, and no specific limitation is given herein. For example, the number of vacuum adsorption components can be the same as the number of placement positions 111, and they correspond one to one.

[0050] Alternatively, in some embodiments, see Figure 4 The vacuum adsorption assembly includes a vacuum generator 1421, a vacuum filter 1422, and an adsorption structure 1423. The adsorption structure 1423 is connected to the vacuum generator 1421 via the vacuum filter 1422. The adsorption structure 1423 is connected to the fixture body 110, and the adsorption structure 1423 is arranged with its back facing the placement position 111. Optionally, the adsorption structure 1423 is connected to the vacuum filter 1422 via an air pipe joint. Optionally, the adsorption structure 1423 can be a suction cup.

[0051] Optionally, in some embodiments, the fixture assembly 100 further includes a sensor 150 , which is used to sense the test piece 200 . The sensor 150 is connected to the fixture body 110 , and the sensor 150 is electrically connected to the vacuum adsorption assembly, and the vacuum adsorption assembly opens and closes in response to the sensor 150 .

[0052] Exemplarily, the sensor 150 is a fiber optic sensor, and the sensor 150 is mounted on the side of the adsorption structure 1423 facing away from the fixture body 110. Of course, the sensor 150 can also be a pressure-sensitive sensor 150 or other sensor 150 that can sense the test piece 200, and there is no specific limitation here.

[0053] When the sensor 150 senses that a test piece 200 is placed on the placement position 111, the sensor 150 sends an electrical signal to the vacuum generator 1421. The vacuum generator 1421 is activated upon receiving the electrical signal sent by the sensor 150, thereby enabling the adsorption structure 1423 to adsorb the test piece 200 on the placement position 111 to fix the test piece 200.

[0054] Other structures and operations of the fixture assembly 100 according to the embodiment of the first aspect of the present application are known to ordinary technicians in this field and will not be described in detail here.

[0055] See also Figure 5 The second embodiment of the present application provides an open-short circuit test device, which includes the fixture assembly 100 of the first embodiment of the present application.

[0056] Optionally, the open-short circuit test device further includes a pressing module 310 and a probe module 410, and both the pressing module 310 and the probe module 410 can move up and down. Figure 6The clamping module 310 includes one or more pressing blocks. The number of clamping modules 310 is equal to the number of placement positions 111. The number of pressing blocks can be equal to the number of floating needle blocks, and they correspond one to one. For example, two clamping modules 310 can be provided, each clamping module 310 includes two pressing blocks, and the two pressing blocks are respectively used to press down the two floating needle blocks in each conductive member 120, so that both floating needle blocks can connect to the component 220 in the first position 1111, thereby leading the signal of the component 220 to the main adapter board through the adapter 130.

[0057] The probe module 410 may include multiple probes, the number of the probe modules 410 is equal to the number of placement positions 111, and each probe module 410 is used to connect to the pin 211 of each cable 210, thereby leading the signal of the pin 211 of the cable 210 to the main adapter board.

[0058] Optionally, the open-short circuit test equipment also includes an open-short circuit tester, and the main adapter board connects the component 220 signal and the pin 211 signal of the test piece 200 to the open-short circuit tester through a 64-pin connector to form a loop, thereby performing an open-short circuit test.

[0059] For example, two probe modules 410 are provided. When the probe modules 410 are moved downward, each probe module 410 can be connected to the pin 211 of the corresponding cable 210. It is understood that the number of probes in each probe module 410 and the arrangement of the probes can be set according to actual needs and are not specifically limited here.

[0060] Optionally, the open-short circuit test device further includes a support member 510, on which both the compression module 310 and the probe module 410 are mounted so as to be movable up and down. Optionally, the support member 510 may be a support frame. Optionally, a movable member 520 is provided on the support member 510, which is mounted so as to be movable up and down on the support member 510, and the compression module 310 and the probe module 410 are both fixedly mounted on the movable member 520. Optionally, the open-short circuit test device further includes a driving component 600, which is connected to the movable member 520 to drive the movable member 520 to move up and down.

[0061] Alternatively, the movable member 520 may be a movable plate, and two guide rails extending in a vertical direction are provided on the support member 510 at intervals, and the movable plate is slidably connected to the guide rails via sliders. Alternatively, the driving component 600 may be a rodless cylinder connected to the movable member 520 to drive the movable member 520 to move along the length direction of the guide rails, thereby achieving the up and down movement of the movable member 520.

[0062] Alternatively, see Figure 5 and Figure 7The open-short circuit test equipment further includes a test cabinet 700, with the fixture assembly 100 and the support member 510 both mounted on top of the test cabinet 700. Optionally, the test cabinet 700 includes a top plate 710, side plates, and a bottom plate 730. The top plate 710 is connected to the side plates, which are connected to the bottom plate 730, and the top plate 710, the side plates, and the bottom plate 730 form a receiving cavity. Optionally, the test cabinet 700 is in the shape of a rectangular parallelepiped, and the side plates include a first sub-side plate 721, a second sub-side plate 722, a third sub-side plate 723, and a fourth sub-side plate 724, which are sequentially connected.

[0063] Optionally, the fixture assembly 100, the compression module 310, and the probe module 410 are all mounted on the top plate 710. Optionally, the side panels are provided with anti-pinch guards 740 to support the top plate 710 and facilitate safe maintenance by operators. Optionally, anti-pinch guards 740 are symmetrically provided on the second and fourth sub-side panels 722, 724, which are arranged opposite each other.

[0064] Optionally, the base plate 730 is an electronically controlled base plate that can be used to mount and secure electronic components such as the main unit MACMIN, solenoid valve 750, and a test board. The solenoid valve 750 is used to connect to the drive unit 600 to control the opening and closing and operating conditions of the drive unit 600. Optionally, a pressure gauge 760 is also mounted on the inner wall of the side panel to display and adjust the air circuit pressure. Optionally, the pressure gauge 760, the main unit MACMIN, the solenoid valve 750, the test board, and other electronic components are all housed within the accommodating cavity. Optionally, a cooling fan 780 is also provided on the side panel to connect the accommodating cavity with the outside world, thereby promptly dissipating heat generated by the electronic components within the accommodating cavity and preventing heat accumulation from affecting the normal operation of the device. Optionally, cooling fans 780 are symmetrically provided on the second and fourth sub-side panels 722 and 724, which are arranged opposite each other.

[0065] Optionally, the test cabinet 700 is provided with a control button 790, which is electrically connected to the solenoid valve 750. The control button 790 controls the opening and closing and operating conditions of the moving member 520 through the solenoid valve 750. Exemplarily, the control button 790 is provided on the outer wall of the first sub-side panel 721, and the control button 790 includes a start button, a reset button, and an emergency stop button.

[0066] Optionally, a first handle 770 is provided on the outer wall of the side panel to facilitate the movement of the entire open / short circuit test device. Optionally, first handles 770 are symmetrically provided on the second sub-side panel 722 and the fourth sub-side panel 724 that are arranged opposite to each other.

[0067] Alternatively, see Figure 5The open and short circuit test equipment also includes an outer cover 800, which is connected to the test cabinet 700, and the fixture assembly 100, the clamping module 310, the probe module 410, the support member 510 and the movable member 520 are all located in the outer cover 800. Optionally, the outer cover 800 is connected to the test cabinet 700 by screws. Optionally, an opening 810 is formed on the side wall of the outer cover 800, and the fixture assembly 100 is installed on a side close to the opening 810 for the operator to operate. Optionally, the outer cover 800 is provided with safety gratings 900 on both sides of the opening 810 to provide safety protection for the operator. Optionally, two second handles 820 are symmetrically provided on the outer cover 800 to move the equipment. Optionally, the second handle 820 can be a groove. Of course, the second handle 820 can also adopt handles of other structures, which are not specifically limited here.

[0068] Other structures and operations of the open-short circuit testing device according to the embodiment of the second aspect of the present application are known to ordinary technicians in this field and will not be described in detail here.

[0069] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present application.

Claims

1. A fixture assembly, characterized in that: include: A fixture body, wherein a placement position is provided on the fixture body, and the placement position is used to place the test piece, and the test piece includes connected cables and components; A conductive member, the conductive member is movably connected to the fixture body, and the conductive member is used to lead the signal of the component to the main adapter board; A fixing module is connected to the fixture body and is used to fix the test piece on the placement position.

2. The fixture assembly according to claim 1, wherein: The placement position includes a first position, which is used to place the component, and the conductive member is arranged above the first position so as to be movable up and down.

3. The fixture assembly according to claim 2, characterized in that: The fixing module includes a pressing piece, which is rotatably connected to the fixture body and is used to press the component in the first position.

4. The fixture assembly according to claim 3, wherein: The pressing member is provided with a first magnetic member on the side facing the first position, and the fixture body is correspondingly provided with a second magnetic member on the side facing the first magnetic member. The magnetic poles of the first magnetic member and the second magnetic member are opposite, and the first magnetic member is used to attract the second magnetic member.

5. The fixture assembly according to claim 1, wherein: The fixture assembly further includes an adapter, which is connected to the conductive member and is used to connect to the main adapter plate.

6. The fixture assembly according to claim 1, wherein: The fixing module includes a vacuum adsorption component, which is arranged on a side of the fixture body away from the placement position, and is used to adsorb the test piece.

7. The fixture assembly according to claim 6, wherein: The vacuum adsorption assembly includes a vacuum generator, a vacuum filter and an adsorption structure. The adsorption structure is connected to the vacuum generator through the vacuum filter. The adsorption structure is connected to the fixture body, and the adsorption structure is arranged with its back facing the placement position.

8. The fixture assembly according to claim 6, wherein: The fixture assembly further includes a sensor for sensing the test piece. The sensor is connected to the fixture body and electrically connected to the vacuum adsorption assembly. The vacuum adsorption assembly opens and closes in response to the sensor.

9. The fixture assembly according to claim 8, characterized in that: The sensor is an optical fiber sensor.

10. Open and short circuit test equipment, characterized by: A jig assembly comprising any one of claims 1 to 9.

Images